BSC-LT/salamandra-2b

Salamandra Model Card

Salamandra is a highly multilingual model pre-trained from scratch that comes in three different sizes — 2B, 7B and 40B parameters — with their respective base and instruction-tuned variants. This model card corresponds to the 2B base version.

To visit the model cards of other Salamandra versions, please refer to the Model Index.

The entire Salamandra family is released under a permissive Apache 2.0 license. Along with the open weights, all training scripts and configuration files are made publicly available in this GitHub repository.

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Model Details

Description

Transformer-based decoder-only language model that has been pre-trained from scratch on 7.8 trillion tokens of highly curated data. The pre-training corpus contains text in 35 European languages and code.

Hyperparameters

The full list of hyperparameters for each model can be found here.

Architecture

Total Parameters	2,253,490,176
Embedding Parameters	524,288,000
Layers	24
Hidden size	2,048
Attention heads	16
Context length	8,192
Vocabulary size	256,000
Precision	bfloat16
Embedding type	RoPE
Activation Function	SwiGLU
Layer normalization	RMS Norm
Flash attention	✅
Grouped Query Attention	❌
Num. query groups	N/A

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Intended Use

Direct Use

The models are intended for both research and commercial use in any of the languages included in the training data. The base models are intended either for language generation or to be further fine-tuned for specific use-cases. The instruction-tuned variants can be used as general-purpose assistants, as long as the user is fully aware of the model’s limitations.

Out-of-scope Use

The model is not intended for malicious activities, such as harming others or violating human rights. Any downstream application must comply with current laws and regulations. Irresponsible usage in production environments without proper risk assessment and mitigation is also discouraged.

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Hardware and Software

Training Framework

Pre-training was conducted using NVIDIA’s NeMo Framework, which leverages PyTorch Lightning for efficient model training in highly distributed settings.

The instruction-tuned versions were produced with FastChat.

Compute Infrastructure

All models were trained on MareNostrum 5, a pre-exascale EuroHPC supercomputer hosted and operated by Barcelona Supercomputing Center.

The accelerated partition is composed of 1,120 nodes with the following specifications:

• 4x Nvidia Hopper GPUs with 64 HBM2 memory
• 2x Intel Sapphire Rapids 8460Y+ at 2.3Ghz and 32c each (64 cores)
• 4x NDR200 (BW per node 800Gb/s)
• 512 GB of Main memory (DDR5)
• 460GB on NVMe storage

Model	Nodes	GPUs
2B	64	256
7B	128	512
40B	256 / 512	1,024 / 2,048

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How to use

This section offers examples of how to perform inference using various methods.

Inference

You'll find different techniques for running inference, including Huggingface's Text Generation Pipeline, multi-GPU configurations, and vLLM for scalable and efficient generation.

Inference with Huggingface's Text Generation Pipeline

The Huggingface Text Generation Pipeline provides a straightforward way to run inference using the Salamandra-2b model.

pip install transformers torch accelerate sentencepiece protobuf

Show code

from transformers import pipeline, set_seed

model_id = "BSC-LT/salamandra-2b"

# Sample prompts
prompts = [
    "Todo el mundo sabe que vivir en Barcelona es",
    "¿Pueblo o ciudad? Una ventaja de vivir en la ciudad es que hay muchas oportunidades de ocio y empleo, así como una gran diversidad de comercios para todos los gustos. Sin embargo, las ciudades suelen ser ",
    "Llegir ens proporciona",
    "What I find more fascinating about languages is that",
    "La vie peut être",
    "The future of AI is",
]

# Create the pipeline
generator = pipeline("text-generation", model_id, device_map="auto")
generation_args = {
  "temperature": 0.1,
  "top_p": 0.95,
  "max_new_tokens": 25,
  "repetition_penalty": 1.2,
  "do_sample": True
}

# Fix the seed
set_seed(1)
# Generate texts
outputs = generator(prompts, **generation_args)
# Print outputs
for output in outputs:
  print(output[0]["generated_text"])

Inference with single / multi GPU

This section provides a simple example of how to run inference using Huggingface's AutoModel class.

pip install transformers torch accelerate sentencepiece protobuf

Show code

from transformers import AutoTokenizer, AutoModelForCausalLM
import torch

model_id = "BSC-LT/salamandra-2b"

# Input text
text = "El mercat del barri és"

# Load the tokenizer
tokenizer = AutoTokenizer.from_pretrained(model_id)
# Load the model
model = AutoModelForCausalLM.from_pretrained(
  model_id,
  device_map="auto",
  torch_dtype=torch.bfloat16
)

generation_args = {
  "temperature": 0.1,
  "top_p": 0.95,
  "max_new_tokens": 25,
  "repetition_penalty": 1.2,
  "do_sample": True
}

inputs = tokenizer(text, return_tensors="pt")
# Generate texts
output = model.generate(input_ids=inputs["input_ids"].to(model.device), attention_mask=inputs["attention_mask"], **generation_args)
# Print outputs
print(tokenizer.decode(output[0], skip_special_tokens=True))

Inference with vLLM

vLLM is an efficient library for inference that enables faster and more scalable text generation.

pip install vllm

Show code

from vllm import LLM, SamplingParams

model_id = "BSC-LT/salamandra-2b"

# Sample prompts
prompts = [
    "Todo el mundo sabe que vivir en Barcelona es",
    "¿Pueblo o ciudad? Una ventaja de vivir en la ciudad es que hay muchas oportunidades de ocio y empleo, así como una gran diversidad de comercios para todos los gustos. Sin embargo, las ciudades suelen ser ",
    "Llegir ens proporciona",
    "What I find more fascinating about languages is that",
    "La vie peut être",
    "The future of AI is",
]
# Create a sampling params object
sampling_params = SamplingParams(
  temperature=0.1,
  top_p=0.95,
  seed=1,
  max_tokens=25,
  repetition_penalty=1.2)

# Create an LLM
llm = LLM(model=model_id)
# Generate texts
outputs = llm.generate(prompts, sampling_params)
# Print outputs
for output in outputs:
    prompt = output.prompt
    generated_text = output.outputs[0].text
    print(f"Prompt: {prompt!r}, Generated text: {generated_text!r}")

---

Data

Pretraining Data

The training corpus consists of 2.4 trillion tokens, including 35 European languages and 92 programming languages. It amounts to a total of 33TB of pre-processed text. Languages were sampled manually by giving x2 oversampling to Spain's co-official languages (Spanish, Catalan, Galician and Basque), code was undersampled by half, and the rest of the languages were kept as is, resulting in the following distribution:

This highly multilingual corpus is predominantly composed of data from Colossal OSCAR, which contributes a significant 66.06% of the total tokens. Following this, Starcoder provides 11.91%, and Spanish Crawling adds 3.34%. The next largest sources are French FR at 3.12% and Proof Pile at 1.98%. Other notable contributions include Macocu, Pile of Law, and Eurlex, each contributing around 1.5% to 1.3%. These major sources collectively form the bulk of the corpus, ensuring a rich and diverse dataset for training the language model. The remaining 10% comes from smaller sources in various languages.

Feel free to click the expand button below to see the full list of sources.

Data Sources

Dataset	Language	Source
Parlamint corpus	at, bg, cz, dk, ee, es, es-ga, fi, fr, gb, gr, hr, hu, it, lv, nl, no, pl, pt, rs, se, si	Erjavec et al., 2021
Bulgarian National Corpus	bg	Link
Crawl of Bulgarian news websites	bg	Link
Colossal OSCAR 1.0	bg, ca, cs, cy, da, de, el, en, es, et, eu, fi, fr, ga, gl, hr, hu, it, lt, lv, mt, nl, nn, no, oc, pl, pt, ro, ru, sh, sk, sl, sr, sv, uk	Brack et al., 2024
Wikimedia dumps	bg, ca, cs, da, de, el, en, es, et, eu, fi, fr, ga, gl, hr, hu, it, lt, lv, mt, nl, nn, no, pl, pt, ro, sh, sk, sl, sr, uk	Link
OpenSubtitlesv2016	bg, ca, cs, da, de, el, en, es, et, eu, fi, fr, gl, hr, it, lt, lv, nl, no, pl, pt, ro, sk, sl, sr, sv, uk	Lison & Tiedemann, 2016
MaCoCu web corpus	bg, ca, el, hr, mt, sl, sr, uk	Bañón et al., 2022
EurLEX-Resources	bg, cs, da, de, el, en, es, et, fi, fr, ga, hr, hu, it, lt, lv, mt, nl, pl, pt, ro, sk, sl, sv	Link
MC4-Legal	bg, cs, da, de, el, en, es, et, fi, fr, ga, hu, it, lt, lv, mt, nl, pl, pt, ro, sk, sl, sv	Link
CURLICAT Corpus	bg, hr, hu, pl, ro, sk, sl	Váradi et al., 2022
CATalog	ca	Palomar-Giner et al., 2024
Spanish Crawling	ca, es, eu, gl	Relevant Spanish websites crawling
Starcoder	code	Li et al., 2023
SYN v9: large corpus of written Czech	cs	Křen et al., 2021
Welsh-GOV	cy	Crawling from Link
DaNewsroom	da	Varab & Schluter, 2020
Danish GigaWord	da	Strømberg-Derczynski et al., 2021
DK-CLARIN Reference Corpus of General Danish	da	Link
The Danish Parliament Corpus 2009 - 2017, v1	da	Hansen, 2018
DeWaC	de	Link
Open Legal Data - German court decisions and laws	de	Ostendorff et al., 2020
Greek Legal Code	el	Papaloukas et al., 2021
Greek Web Corpus	el	Outsios et al., 2018
Auxiliary Mathematics Problems and Solutions (AMPS) dataset	en	Hendrycks et al., 2021
BIGPATENT	en	Sharma et al., 2019
FineWeb-Edu (350BT subset)	en	Penedo et al., 2024
peS2o	en	Soldaini & Lo, 2023
PG-19	en	Rae et al., 2019
Pile of Law (selected subsets)	en	Henderson* et al., 2022
proof-pile	en	Link
RedPajama-Data T1 (StackExchange subset)	en	Computer, 2023
The Pile (PhilPapers subset)	en	Gao et al., 2021
Biomedical	es	Internally generated scientific dataset: Dialnet, Scielo, CSIC, TDX, BSC, UCM
HPLTDatasets v1 - Spanish	es	de Gibert et al., 2024
Legal	es	Internally generated legal dataset: BOE, BORME, Senado, Congreso, Spanish court orders, DOGC
Scientific	es	Internally generated scientific dataset: Wikipedia LS, Pubmed, MeSpEn, patents, clinical cases, medical crawler
Spanish Legal Domain Corpora	es	Gutiérrez-Fandiño et al., 2021
Estonian National Corpus 2021	et	Koppel & Kallas, 2022
Estonian Reference Corpus	et	Link
EusCrawl (w/o Wikipedia or NC-licenses)	eu	Artetxe et al., 2022
Latxa Corpus v1.1	eu	Etxaniz et al., 2024 Link
Aya Dataset (w/o Evaluation Suite)	eu, hr, nl, fi, ka, hu, lt, nn, ro, sk, lv, cy, bg, cs, en, fr, de, ga, mt, pl, ru, sl, sv, ca, da, et, gl, el, it, no, pt, sr, es, uk	Singh et al., 2024
Yle Finnish News Archive	fi	Link
CaBeRnet: a New French Balanced Reference Corpus	fr	Popa-Fabre et al., 2020
French Public Domain Books	fr	Link
French Public Domain Newspapers	fr	Link
Irish Universal Dependencies	ga	Link
The Gaois bilingual corpus of English-Irish legislation (Irish legislation)	ga	Link
CorpusNÓS	gl	de-Dios-Flores et al., 2024
Croatian web corpus hrWaC 2.1	hr	Ljubešić & Klubička, 2014
ITWaC	it	Link
Corpus of State-related content from the Latvian Web (Processed)	lv	Link
Korpus Malti	mt	Micallef et al., 2022
SoNaR Corpus NC 1.2	nl	Link
Norwegian Colossal Corpus	nn, no	Kummervold et al., 2021
Occitan Corpus	oc	Provided by IEA
NKJP-PodkorpusMilionowy-1.2 (National Corpus of Polish)	pl	Lewandowska-Tomaszczyk et al., 2013
Polish Parliamentary Corpus / Korpus Dyskursu Parlamentarnego	pl	Ogrodniczuk, 2018
Brazilian Portuguese Web as Corpus	pt	Wagner Filho et al., 2018
ParlamentoPT	pt	Rodrigues et al., 2023
MARCELL Romanian legislative subcorpus v2	ro	Link
Korpus slovenských právnych predpisov v1.9	sk	Link
od-justice 2.0	sk	Link
Corpus of academic Slovene KAS 2.0	sl	Žagar et al., 2022
slWaC web corpus	sl	Erjavec et al., 2015
SrpKorSubset (news, legal, academic, conversation, literary)	sr	Link
The Swedish Culturomics Gigaword Corpus	sv	Rødven-Eide, 2016
Corpus of laws and legal acts of Ukraine	uk	Link

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• Penedo, G., Kydlíček, H., allal, L. B., Lozhkov, A., Mitchell, M., Raffel, C., Von Werra, L., & Wolf, T. (2024). The FineWeb Datasets: Decanting the Web for the Finest Text Data at Scale (arXiv:2406.17557). arXiv. http://arxiv.org/abs/2406.17557
• Singh, S., Vargus, F., Dsouza, D., Karlsson, B. F., Mahendiran, A., Ko, W.-Y., Shandilya, H., Patel, J., Mataciunas, D., OMahony, L., Zhang, M., Hettiarachchi, R., Wilson, J., Machado, M., Moura, L. S., Krzemiński, D., Fadaei, H., Ergün, I., Okoh, I., … Hooker, S. (2024). Aya Dataset: An Open-Access Collection for Multilingual Instruction Tuning (arXiv:2402.06619). arXiv. http://arxiv.org/abs/2402.06619

The model was trained for 3 epochs, with two final rounds of 0.3B higher-quality tokens each, meaning that the total number of tokens seen during pre-training amounts to roughly 7.8 trillion tokens.

We provide an extense Datasheet section following the best practices defined by (Gebru et al., 2021).

Datasheet

Motivation

For what purpose was the dataset created? Was there a specific task in mind? Was there a specific gap that needed to be filled? Please provide a description.

The purpose of creating this dataset is to pre-train the Salamandra family of multilingual models with high performance in a large number of European languages (35) and code (including 92 different programming languages). In addition, we aim to represent especially the co-official languages of Spain: Spanish, Catalan, Galician, and Basque. This is the reason why we carry out an oversampling of these languages.

We detected that there is a great lack of massive multilingual data, especially in minority languages (Ostendorff & Rehm, 2023), so part of our efforts in the creation of this pre-training dataset have resulted in the contribution to large projects such as the Community OSCAR (Brack et al., 2024), which includes 151 languages and 40T words, or CATalog (Palomar-Giner et al., 2024), the largest open dataset in Catalan in the world.

Who created the dataset (e.g., which team, research group) and on behalf of which entity (e.g., company, institution, organization)?

The dataset has been created by the Language Technologies unit (LangTech) of the Barcelona Supercomputing Center - Centro Nacional de Supercomputación (BSC-CNS), which aims to advance the field of natural language processing through cutting-edge research and development and the use of HPC. In particular, it was created by the unit's data team, the main contributors being Javier Saiz, Ferran Espuña, and Jorge Palomar.

However, the creation of the dataset would not have been possible without the collaboration of a large number of collaborators, partners, and public institutions, which can be found in detail in the acknowledgements.

Who funded the creation of the dataset? If there is an associated grant, please provide the name of the grantor and the grant name and number.

This work/research has been promoted and financed by the Government of Catalonia through the Aina project.

Composition

What do the instances that comprise the dataset represent (e.g., documents, photos, people, countries)? Are there multiple types of instances (e.g., movies, users, and ratings; people and interactions between them; nodes and edges)? Please provide a description.

The dataset consists entirely of text documents in various languages. Specifically, data was mainly sourced from the following databases and repositories:

• Common Crawl: Repository that holds website data and is run by the Common Crawl non-profit organization. It is updated monthly and is distributed under the CC0 1.0 public domain license.
• GitHub: Community platform that allows developers to create, store, manage, and share their code. Repositories are crawled and then distributed with their original licenses, which may vary from permissive to non-commercial licenses.
• Wikimedia: Database that holds the collection databases managed by the Wikimedia Foundation, including Wikipedia, Wikibooks, Wikinews, Wikiquote, Wikisource, and Wikivoyage. It is updated monthly and is distributed under Creative Commons Attribution-ShareAlike License 4.0.
• EurLex: Repository that holds the collection of legal documents from the European Union, available in all of the EU’s 24 official languages and run by the Publications Office of the European Union. It is updated daily and is distributed under the Creative Commons Attribution 4.0 International license.
• Other repositories: Specific repositories were crawled under permission for domain-specific corpora, which include academic, legal, and newspaper repositories.

We provide a complete list of dataset sources at the end of this section.

How many instances are there in total (of each type, if appropriate)?

The dataset contains a diverse range of instances across multiple languages, with notable adjustments for certain languages. English represents the largest portion, accounting for 39.08% of the total data. Spanish was upsampled by a factor of 2, bringing its share to 16.59%, while Catalan (1.84%), Basque (0.26%), and Galician (0.36%) were also upsampled by 2. On the other hand, code-related data was downsampled by half, making up 6.42% of the total. Other prominent languages include French (6.59%), Russian (5.39%), German (4.25%), and Hungarian (3.93%), with several additional languages contributing between 1% and 2%, and smaller portions represented by a variety of others.

Does the dataset contain all possible instances or is it a sample (not necessarily random) of instances from a larger set? If the dataset is a sample, then what is the larger set? Is the sample representative of the larger set (e.g., geographic coverage)? If so, please describe how this representativeness was validated/verified. If it is not representative of the larger set, please describe why not (e.g., to cover a more diverse range of instances, because instances were withheld or unavailable).

The dataset is a sample from multiple sources, with different weights based on the primary language of the content: Spanish, Catalan, Basque, and Galician content was upsampled by a factor of two, while programming languages were downsampled by a factor of half. Other sources were sampled in proportion to their occurrence.

What data does each instance consist of? “Raw” data (e.g., unprocessed text or images) or features? In either case, please provide a description.

Each instance consists of a text document processed for deduplication, language identification, and source-specific filtering. Some documents required optical character recognition (OCR) to extract text from non-text formats such as PDFs.

Is there a label or target associated with each instance? If so, please provide a description.

Each instance is labeled with a unique identifier, the primary language of the content, and the URL for web-sourced instances. Additional labels were automatically assigned to detect specific types of content —harmful or toxic content— and to assign preliminary indicators of undesired qualities —very short documents, high density of symbols, etc.— which were used for filtering instances.

Is any information missing from individual instances? If so, please provide a description, explaining why this information is missing (e.g., because it was unavailable). This does not include intentionally removed information, but might include, e.g., redacted text.

No significant information is missing from the instances.

Are relationships between individual instances made explicit (e.g., users’ movie ratings, social network links)? If so, please describe how these relationships are made explicit.

Instances are related through shared metadata, such as source and language identifiers.

Are there recommended data splits (e.g., training, development/validation, testing)? If so, please provide a description of these splits, explaining the rationale behind them.

The dataset is split randomly into training, validation, and test sets.

Are there any errors, sources of noise, or redundancies in the dataset? If so, please provide a description.

Despite removing duplicated instances within each source, redundancy remains at the paragraph and sentence levels, particularly in web-sourced instances where SEO techniques and templates contribute to repeated textual patterns. Some instances may also be duplicated across sources due to format variations.

Is the dataset self-contained, or does it link to or otherwise rely on external resources (e.g., websites, tweets, other datasets)? If it links to or relies on external resources, a) are there guarantees that they will exist, and remain constant, over time; b) are there official archival versions of the complete dataset (i.e., including the external resources as they existed at the time the dataset was created); c) are there any restrictions (e.g., licenses, fees) associated with any of the external resources that might apply to a dataset consumer? Please provide descriptions of all external resources and any restrictions associated with them, as well as links or other access points, as appropriate.

The dataset is self-contained and does not rely on external resources.

Does the dataset contain data that might be considered confidential (e.g., data that is protected by legal privilege or by doctor–patient confidentiality, data that includes the content of individuals’ non-public communications)? If so, please provide a description.

The dataset does not contain confidential data.

Does the dataset contain data that, if viewed directly, might be offensive, insulting, threatening, or might otherwise cause anxiety? If so, please describe why. If the dataset does not relate to people, you may skip the remaining questions in this section.

The dataset includes web-crawled content, which may overrepresent pornographic material across languages (Kreutzer et al., 2022). Although pre-processing techniques were applied to mitigate offensive content, the heterogeneity and scale of web-sourced data make exhaustive filtering challenging, which makes it next to impossible to identify all adult content without falling into excessive filtering, which may negatively influence certain demographic groups (Dodge et al., 2021).

Does the dataset identify any subpopulations (e.g., by age, gender)? If so, please describe how these subpopulations are identified and provide a description of their respective distributions within the dataset.

The dataset does not explicitly identify any subpopulations.

Is it possible to identify individuals (i.e., one or more natural persons), either directly or indirectly (i.e., in combination with other data) from the dataset? If so, please describe how.

Web-sourced instances in the dataset may contain personally identifiable information (PII) that is publicly available on the Web, such as names, IP addresses, email addresses, and phone numbers. While it would be possible to indirectly identify individuals through the combination of multiple data points, the nature and scale of web data makes it difficult to parse such information. In any case, efforts are made to filter or anonymize sensitive data during pre-processing, but some identifiable information may remain in the dataset.

Does the dataset contain data that might be considered sensitive in any way? If so, please provide a description.

Given that the dataset includes web-sourced content and other publicly available documents, instances may inadvertently reveal financial information, health-related details, or forms of government identification, such as social security numbers (Subramani et al., 2023), especially if the content originates from less-regulated sources or user-generated platforms.

Collection Process

How was the data collected?

This dataset is constituted by combining several sources, whose acquisition methods can be classified into three groups:

• Web-sourced datasets with some preprocessing available under permissive license (p.e. Common Crawl).
• Domain-specific or language-specific raw crawls (p.e. Spanish Crawling).
• Manually curated data obtained through collaborators, data providers (by means of legal assignment agreements) or open source projects (p.e. CATalog).

What mechanisms or procedures were used to collect the data? How were these mechanisms or procedures validated?

According to the three groups previously defined, these are the mechanisms used in each of them:

• Open direct download. Validation: data integrity tests.
• Ad-hoc scrapers or crawlers. Validation: software unit and data integrity tests.
• Direct download via FTP, SFTP, API or S3. Validation: data integrity tests.

If the dataset is a sample from a larger set, what was the sampling strategy?

The sampling strategy was to use the whole dataset resulting from the filtering explained in the ‘preprocessing/cleaning/labelling’ section, with the particularity that an upsampling of 2 (i.e. twice the probability of sampling a document) was performed for the co-official languages of Spain (Spanish, Catalan, Galician, Basque), and a downsampling of 1/2 was applied for code (half the probability of sampling a code document, evenly distributed among all programming languages).

Who was involved in the data collection process and how were they compensated?

This data is generally extracted, filtered and sampled by automated processes. The code required to run these processes has been developed entirely by members of the LangTech data team, or otherwise obtained from open-source software. Furthermore, there has been no monetary consideration for acquiring data from suppliers.

Over what timeframe was the data collected? Does this timeframe match the creation timeframe of the data associated with the instances? If not, please describe the timeframe in which the data associated with the instances was created.

Data were acquired and processed from April 2023 to April 2024. However, as mentioned, much data has been obtained from open projects such as Common Crawl, which contains data from 2014, so it is the end date (04/2024) rather than the start date that is important.

Were any ethical review processes conducted? If so, please provide a description of these review processes, including the outcomes, as well as a link or other access point to any supporting documentation.

No particular ethical review process has been carried out as the data is mostly open and not particularly sensitive. However, we have an internal evaluation team and a bias team to monitor ethical issues. In addition, we work closely with ‘Observatori d'Ètica en Intel·ligència Artificial’ (OEIAC) and ‘Agencia Española de Supervisión de la Inteligencia Artificial’ (AESIA) to audit the processes we carry out from an ethical and legal point of view, respectively.

Preprocessing

Was any preprocessing/cleaning/labeling of the data done? If so, please provide a description. If not, you may skip the remaining questions in this section.

Instances of text documents were not altered, but web-sourced documents were filtered based on specific criteria along two dimensions:

• Quality: documents with a score lower than 0.8, based on undesired qualities, such as documents with low number of lines, very short sentences, presence of long footers and headers, and high percentage of punctuation, obtained through CURATE (Palomar-Giner et al., 2024) were filtered out.
• Harmful or adult content: documents originating from Colossal OSCAR were filtered using LLM-Datasets (Ostendorff et al., 2024) based on the perplexity from a language model (‘harmful_pp’ field) provided by the Ungoliant pipeline (Abadji et al., 2021).

Was the “raw” data saved in addition to the preprocessed/cleaned/labeled data? If so, please provide a link or other access point to the “raw” data.

The original raw data was not kept.

Is the software that was used to preprocess/clean/label the data available? If so, please provide a link or other access point.

Yes, the preprocessing and filtering software is open-sourced. The CURATE pipeline was used for Spanish Crawling and CATalog, and the Ungoliant pipeline was used for the OSCAR project.

Uses

Has the dataset been used for any tasks already? If so, please provide a description.

Pre-train the Salamandra model family.

What (other) tasks could the dataset be used for?

The data can be used primarily to pre-train other language models, which can then be used for a wide range of use cases. The dataset could also be used for other tasks such as fine-tuning language models, cross-lingual NLP tasks, machine translation, domain-specific text generation, and language-specific data analysis.

Is there anything about the composition of the dataset or the way it was collected and preprocessed/cleaned/labeled that might impact future uses? Is there anything a dataset consumer could do to mitigate these risks or harms?

Web-crawled content is over-represented with standard language varieties, impacting language model performance for minority languages. Language diversity in data is crucial to avoid bias, especially in encoding non-standard dialects, preventing the exclusion of demographic groups. Moreover, despite legal uncertainties in web-scraped data, we prioritize permissive licenses and privacy protection measures, acknowledging the challenges posed by personally identifiable information (PII) within large-scale datasets. Our ongoing efforts aim to address privacy concerns and contribute to a more inclusive linguistic dataset.

Are there tasks for which the dataset should not be used?

Distribution

Will the dataset be distributed to third parties outside of the entity on behalf of which the dataset was created? If so, please provide a description.

The dataset will not be released or distributed to third parties. Any related question to distribution is omitted in this section.

Maintenance

Who will be supporting/hosting/maintaining the dataset?

The dataset will be hosted by the Language Technologies unit (LangTech) of the Barcelona Supercomputing Center (BSC). The team will ensure regular updates and monitor the dataset for any issues related to content integrity, legal compliance, and bias for the sources they are responsible for.

How can the owner/curator/manager of the dataset be contacted?

The data owner may be contacted with the email address [email protected].

Will the dataset be updated?

The dataset will not be updated.

If the dataset relates to people, are there applicable limits on the retention of the data associated with the instances? If so, please describe these limits and explain how they will be enforced.

The dataset does not keep sensitive data that could allow direct identification of individuals, apart from the data that is publicly available in web-sourced content. Due to the sheer volume and diversity of web data, it is not feasible to notify individuals or manage data retention on an individual basis. However, efforts are made to mitigate the risks associated with sensitive information through pre-processing and filtering to remove identifiable or harmful content. Despite these measures, vigilance is maintained to address potential privacy and ethical issues.

Will older versions of the dataset continue to be supported/hosted/maintained? If so, please describe how. If not, please describe how its obsolescence will be communicated to dataset consumers.

Since the dataset will not be updated, only the final version will be kept.

If others want to extend/augment/build on/contribute to the dataset, is there a mechanism for them to do so?

The dataset does not allow for external contributions.

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Evaluation

Evaluation is done using the Language Model Evaluation Harness (Gao et al., 2024). We evaluate on a set of tasks taken from SpanishBench, CatalanBench, BasqueBench and GalicianBench. We also use English tasks already available on the LM Evaluation Harness. These benchmarks include both new and existing tasks and datasets. In the tables below, we include the results in a selection of evaluation datasets that represent model's performance across a variety of tasks within these benchmarks.

We only use tasks that are either human generated, human translated, or with a strong human-in-the-loop (i.e., machine translation followed by professional revision or machine generation followed by human revision and annotation). This is the reason behind the variety in number of tasks reported across languages. As more tasks that fulfill these requirements are published, we will update the presented results. We also intend to expand the evaluation to other languages, as long as the datasets meet our quality standards.

During the implementation of the evaluation we observed a series of issues worth considering when replicating and interpreting the results presented. These issues include ≈1.5% variances in performance in some tasks depending on the version of the transformers library used, and depending on the use (or lack of use) of tensor parallelism when loading a model. When implementing existing tasks, we carry out a comprehensive quality evaluation of the dataset, the Harness task itself, and what kind of input models see during evaluation. Our implementation (see links above) addresses multiple existing problems such as errors in datasets and prompts, and lack of pre-processing. All this means that results will vary if using other Harness implementations, and may slightly vary depending on the replication setup.

It should be noted that these results are subject to all the drawbacks of every current gold-standard evaluation, and that the figures do not fully represent the models capabilities and potential. We thus advise caution when reading and interpreting the results.

A full list of results compared to other baselines, a discussion of the model's performance across tasks and its implications, and details regarding problem-solving with task implementation will soon be available in the technical report.

All results reported below are on a 5-shot setting.

Spanish

Category	Task	Metric	Result
Commonsense Reasoning	xstorycloze_es	acc	64.92
NLI	wnli_es	acc	54.93
	xnli_es	acc	44.98
Paraphrasing	paws_es	acc	52.05
QA	xquad_es	acc	54.32
Translation	flores_es	bleu	11.46

Catalan

Category	Task	Metric	Result
Commonsense Reasoning	copa_ca	acc	68.80
	xstorycloze_ca	acc	65.72
NLI	wnli_ca	acc	56.34
	xnli_ca	acc	48.07
Paraphrasing	parafraseja	acc	58.55
	paws_ca	acc	55.15
QA	arc_ca_easy	acc	54.76
	arc_ca_challenge	acc	30.55
	openbookqa_ca	acc	27.40
	piqa_ca	acc	62.89
	siqa_ca	acc	41.91
Translation	flores_ca	bleu	14.70

Basque

Category	Task	Metric	Result
Commonsense Reasoning	xcopa_eu	acc	55.60
	xstorycloze_eu	acc	57.64
NLI	wnli_eu	acc	56.34
	xnli_eu	acc	39.78
QA	eus_exams	acc	23.72
	eus_proficiency	acc	23.37
	eus_trivia	acc	27.58
Reading Comprehension	eus_reading	acc	27.84
Translation	flores_eu	bleu	3.58

Galician

Category	Task	Metric	Result
Paraphrasing	parafrases_gl	acc	54.08
	paws_gl	acc	53.30
QA	openbookqa_gl	acc	30.80
Translation	flores_gl	bleu	12.86

English

Category	Task	Metric	Result
Commonsense Reasoning	copa	acc	83.00
	xstorycloze_en	acc	73.06
NLI	wnli	acc	56.34
	xnli_en	acc	47.35
Paraphrasing	paws *	acc	55.95
QA	arc_easy	acc	74.07
	arc_challenge	acc	37.63
	openbookqa	acc	28.00
	piqa	acc	74.86
	social_iqa	acc	46.62
	squad_en **	acc	44.38

* Current LM Evaluation Harness implementation is lacking correct pre-processing. These results are obtained with adequate pre-processing.

** This task is not yet available in the official Harness, we hope to add it soon.

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Ethical Considerations and Limitations

We examine the presence of undesired societal and cognitive biases present in this model using different benchmarks. For societal biases, we test performance using the BBQ dataset (Parrish et al., 2022) in the original English and the Regard dataset (Sheng et al., 2019). We report inadequate accuracies in both ambiguous and disambiguated contexts, which is indicative of the presence of societal biases which need to be addressed in post-training phases.

Our cognitive bias analysis focuses on positional effects in 0-shot settings, and majority class bias in few-shot settings. For positional effects, we leverage the ARC Multiple Choice Question dataset (Clark et al., 2018). We observe moderate to strong to very strong primacy effects, whereby the model shows a preference for answers towards the beginning of the list of provided answers. We measure effects of majority class effects in few-shot settings using SST-2 (Socher et al., 2013). We detect moderate effects, implying that outputs can be influenced by the prompts.

Our analyses of these biases are by no means exhaustive and are limited by the relative scarcity of adequate resources in all languages present in the training data. We aim to gradually extend and expand our analyses in future work.

We highlight that these results can be expected from a pretrained model that has not yet been instruction-tuned or aligned. These tests are performed in order to show the biases the model may contain. We urge developers to take them into account and perform safety testing and tuning tailored to their specific applications of the model.

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Additional information

Author

The Language Technologies Unit from Barcelona Supercomputing Center.

Contact

For further information, please send an email to [email protected].

Copyright

Copyright(c) 2024 by Language Technologies Unit, Barcelona Supercomputing Center.

Funding

This work has been promoted and financed by the Government of Catalonia through the Aina Project.

This work is funded by the Ministerio para la Transformación Digital y de la Función Pública - Funded by EU – NextGenerationEU within the framework of ILENIA Project with reference 2022/TL22/00215337.

Acknowledgements

This project has benefited from the contributions of numerous teams and institutions, mainly through data contributions, knowledge transfer or technical support.

In Catalonia, many institutions have been involved in the project. Our thanks to Òmnium Cultural, Parlament de Catalunya, Institut d'Estudis Aranesos, Racó Català, Vilaweb, ACN, Nació Digital, El món and Aquí Berguedà.

At national level, we are especially grateful to our ILENIA project partners: CENID, HiTZ and CiTIUS for their participation. We also extend our genuine gratitude to the Spanish Senate and Congress, Fundación Dialnet, Fundación Elcano and the ‘Instituto Universitario de Sistemas Inteligentes y Aplicaciones Numéricas en Ingeniería (SIANI)’ of the University of Las Palmas de Gran Canaria.

At the international level, we thank the Welsh government, DFKI, Occiglot project, especially Malte Ostendorff, and The Common Crawl Foundation, especially Pedro Ortiz, for their collaboration. We would also like to give special thanks to the NVIDIA team, with whom we have met regularly, specially to: Ignacio Sarasua, Adam Henryk Grzywaczewski, Oleg Sudakov, Sergio Perez, Miguel Martinez, Felipes Soares and Meriem Bendris. Their constant support has been especially appreciated throughout the entire process.

Their valuable efforts have been instrumental in the development of this work.

Disclaimer

Be aware that the model may contain biases or other unintended distortions. When third parties deploy systems or provide services based on this model, or use the model themselves, they bear the responsibility for mitigating any associated risks and ensuring compliance with applicable regulations, including those governing the use of Artificial Intelligence.

The Barcelona Supercomputing Center, as the owner and creator of the model, shall not be held liable for any outcomes resulting from third-party use.

Citation

Technical report and paper coming soon.

License

Apache License, Version 2.0

Model Index

Model	Base	Instruct
2B	Link	Link
7B	Link	Link
40B	WiP	WiP