KazakhLawCorpus-clean

Dataset Summary

KazakhLawCorpus-clean is a cleaned, Kazakh-only corpus of legislative documents from the Republic of Kazakhstan. It is a processed derivative of the original Arailym-tleubayeva/KazakhLawCorpus dataset.

The original dataset repository was downloaded from Hugging Face and used as the source for this release. Its laws_metadata.csv file contained 223,245 legislative records with multilingual fields and source-oriented metadata.

The cleaned release contains 215,889 unique Kazakh-language legislative records, with one row representing one legal act. Each record includes the available legal, temporal, institutional, regional, publication, and source metadata extracted from the official Adilet legal information system.

The dataset contains 25 metadata fields and covers legal acts adopted between 1947-10-30 and 2026-07-20.

The corpus is intended for research and development in:

• Legal information retrieval
• Retrieval-augmented generation
• Legal question answering
• Legal document classification
• Semantic search
• Legal natural language processing
• Language model adaptation
• Corpus linguistics
• Low-resource Kazakh-language NLP

Dataset Origin and Derivation

KazakhLawCorpus-clean was produced from the original KazakhLawCorpus dataset through a reproducible cleaning and validation pipeline.

The processing procedure included:

1. Selecting the Kazakh-language fields with the _kk suffix.
2. Removing the corresponding Russian-language fields with the _ru suffix.
3. Removing mixed-language base fields where Kazakh-specific versions were available.
4. Renaming the retained Kazakh-language fields to their base field names.
5. Converting source-system placeholders to null values.
6. Detecting and removing CAPTCHA, bot-verification, and scraping artefacts.
7. Removing records without usable Kazakh-language content.
8. Removing records missing the essential title or description fields.
9. Validating the dataset schema and identifiers.
10. Confirming the one-row-per-law structure.
11. Preserving the available source, temporal, legal-status, institutional, publication, and regional metadata.

The original dataset contained 223,245 records. During preprocessing, 7,356 records were removed, resulting in a final corpus of 215,889 unique Kazakh-language legislative records.

The original source dataset remains available separately and has not been replaced or modified by this cleaned release.

Relationship Between the Repositories

Repository	Purpose
KazakhLawCorpus	Original multilingual dataset containing source-oriented and unprocessed metadata
KazakhLawCorpus-clean	Cleaned, Kazakh-only, one-row-per-law research release

Users who require the original multilingual fields, historical versions, reference links, or unprocessed source metadata should use KazakhLawCorpus.

Users who require a cleaned Kazakh-language table for NLP, information retrieval, semantic search, legal document classification, corpus analysis, or retrieval-augmented generation should use KazakhLawCorpus-clean.

Dataset Statistics

Property	Value
Final documents	215,889
Original documents	223,245
Records removed during cleaning	7,356
Metadata fields	25
Unique law_id values	215,889
Duplicate law_id values	0
Missing title values	0
Missing description values	0
Date coverage	1947-10-30 to 2026-07-20
Language	Kazakh
License	CC BY 4.0

Data File

The dataset is distributed as:

data/kazakhlawcorpus_kk_only.csv

Each row corresponds to one legal act.

Dataset Structure

Dataset Schema

The dataset contains the following 25 fields:

Field	Description
source_id	Identifier inherited from the source system
law_id	Unique identifier of the legal act
date_adopted	Date on which the legal act was adopted
date_modified	Most recent available modification date
date_published	Publication date
state_registry_number	State registry number
law_registry_number	Legal act registry number
gov_registration_number	Government registration number
ministry_registration_date	Ministry registration date
is_archive	Indicator showing whether the record is archived
is_repealed	Indicator showing whether the legal act has been repealed
adilet_url	URL of the document in the Adilet legal information system
ekb_url	URL associated with the EKB source system
title	Kazakh-language title of the legal act
description	Kazakh-language description or text content
official_publication_info	Information about official publication
act_form	Form or type of the legal act
legal_relation_area	Area of legal regulation
legal_force	Legal force or hierarchical status
adopting_body	Institution that adopted the legal act
regulatory_body	Responsible regulatory institution
developer_body	Institution that developed the legal act
region	Region associated with the legal act
place_of_adoption	Place where the legal act was adopted
database_section	Section of the source legal database

Cleaning Pipeline

The corpus was produced using a reproducible, multi-stage cleaning pipeline.

1. Kazakh-language fields ending in _kk were selected.
2. Russian-language fields ending in _ru were removed.
3. Mixed-language base fields were removed where language-specific fields were available.
4. Retained _kk columns were renamed to their corresponding base names.
5. Source placeholders such as "ЖОҚ", "НЕТ", "N/A", "-", and "---" were converted to null values.
6. CAPTCHA, bot-verification, and scraping artefacts were identified and removed.
7. Records without usable Kazakh-language content were removed.
8. Records missing the required title or description fields were removed.
9. Identifier uniqueness was validated.
10. Date fields were validated.
11. URL fields were checked.
12. Duplicate titles and descriptions were analysed.
13. Metadata consistency checks were performed.
14. The final one-row-per-law structure was confirmed.

Quality Validation

The dataset underwent the following validation procedures:

• Schema validation
• Identifier validation
• Duplicate identifier detection
• Missing-value analysis
• Metadata completeness analysis
• URL validation
• Date validation
• Unicode validation
• Encoding validation
• CAPTCHA and bot-verification detection
• Statistical quality assessment
• One-row-per-law structure validation

Known Limitations

Some metadata fields are sparse because the corresponding information is absent from the original source database.

Fields with relatively high levels of missing data may include:

• developer_body
• regulatory_body
• ministry_registration_date
• date_modified
• date_published

These missing values reflect the completeness of the original source rather than errors introduced during preprocessing.

The is_archive field is constant in the current release and should therefore not be treated as an informative feature for statistical modelling.

Duplicate titles may occur legitimately because many legal acts follow standardised naming conventions or share similar titles across regions, institutions, and adoption dates.

The dataset represents the source records available at the time of collection and may not reflect subsequent amendments, repeals, or corrections made in the official legal information system.

Intended Uses

The dataset may be used for research and development in:

• Sparse legal document retrieval
• Dense retrieval
• BM25 evaluation
• Hybrid retrieval
• Retrieval-augmented generation
• Legal question answering
• Legal document classification
• Legal search systems
• Text similarity detection
• Metadata prediction
• Corpus analysis
• Language model fine-tuning
• Domain adaptation for Kazakh-language models

Out-of-Scope Uses

This dataset must not be treated as a source of legal advice.

Users should verify legal provisions, document status, amendments, and current applicability against official legal information sources before making legal, administrative, financial, or policy decisions.

The dataset should not be used as the sole basis for automated decisions that may affect individuals, organisations, or legal rights.

Loading the Dataset

The dataset can be loaded using the Hugging Face datasets library:

from datasets import load_dataset

dataset = load_dataset(
    "Arailym-tleubayeva/KazakhLawCorpus-clean"
)

df = dataset["train"].to_pandas()

To inspect the dataset structure:

print(dataset)
print(dataset["train"].column_names)
print(dataset["train"][0])

Reproducibility

The accompanying analysis and preprocessing pipeline supports reproducible:

• Data cleaning
• Schema validation
• Identifier validation
• Duplicate analysis
• Missing-value analysis
• Metadata completeness assessment
• Statistical summaries
• Publication-quality figure generation
• quality_report.json generation

The original dataset remains available in a separate repository, allowing users to compare the cleaned release with its source data.

License

This dataset is released under the Creative Commons Attribution 4.0 International — CC BY 4.0 license.

Users may share and adapt the dataset for any purpose, provided that appropriate attribution is given.

Citation

When using this dataset, please cite it as follows:

@dataset{tleubayeva2026kazakhlawcorpusclean,
  title     = {KazakhLawCorpus-clean},
  author    = {Tleubayeva, Arailym},
  year      = {2026},
  publisher = {Hugging Face},
  url       = {https://huggingface.co/datasets/Arailym-tleubayeva/KazakhLawCorpus-clean},
  license   = {CC BY 4.0}
}

Users should also cite the original KazakhLawCorpus dataset when relying on its original collection, source metadata, or multilingual content.

Author

• Arailym Tleubayeva

Contact

For questions, suggestions, error reports, or contributions, please use the issue tracker in the Hugging Face dataset repository.