Datasets:

TajikNLPWorld
/

TajPersParallelCorpus

language:
  - fa
  - tg
license: apache-2.0
pretty_name: Tajik–Persian Parallel Corpus
task_categories:
  - translation
  - sentence-similarity
  - summarization
  - feature-extraction
  - text-generation
tags:
  - parallel-corpus
  - tajik
  - persian
  - translation
  - bilingual
size_categories:
  - 100K<n<1M

TajPersParallelCorpus

Tajik–Persian Parallel Corpus is a large-scale parallel corpus for Tajik and Persian.

Description

This dataset contains aligned Tajik–Persian sentence pairs collected from multiple sources, including news, poetry, prose, lexical resources, and named-entity lists.
It is intended for machine translation, cross-lingual retrieval, linguistic analysis, tokenizer evaluation, and other NLP tasks.

Dataset Statistics

Overview

Metric	Value
Sentence pairs	328,253
Unique Tajik sentences	328,253
Unique Persian sentences	328,253
Total Tajik tokens	1,888,484
Total Persian tokens	1,984,629
Unique Tajik words	253,320
Unique Persian words	169,174
Avg. Tajik tokens / sentence	5.75
Avg. Persian tokens / sentence	6.05
Avg. Tajik chars / sentence	33.35
Avg. Persian chars / sentence	28.0
Max Tajik tokens / sentence	157
Max Persian tokens / sentence	161
Max Tajik chars / sentence	973
Max Persian chars / sentence	838

Category Distribution

Category	Count	Share
poetry_parts	154,891	47.19%
masnavi	38,972	11.87%
unique_tajik_words	38,151	11.62%
shahnameh	24,819	7.56%
prose_parts	23,936	7.29%
paranames_per	20,101	6.12%
words	14,292	4.35%
paranames_loc	9,586	2.92%
dr	1,542	0.47%
jj	803	0.24%
paranames_org	722	0.22%
bbc	438	0.13%

Source Distribution

Source	Count	Share
unknown	328,253	100.00%

Data Format

Each record has the following fields:

Field	Type	Description
`farsi`	string	Persian side of the aligned pair
`tajik`	string	Tajik side of the aligned pair
`category`	string	File-based category, such as `poetry_parts`, `prose_parts`, or `words`
`source`	string	Optional source label if available

Example

{
  "farsi": "در اقصای عالم بگشتم بسی",
  "tajik": "Дар ақсои олам бигаштам басе,",
  "category": "poetry_parts"
}

Intended Uses

Tajik–Persian machine translation
Cross-lingual lexical studies
Subword tokenization experiments
Corpus linguistics
Named-entity and domain adaptation research

Limitations

The corpus is heterogeneous and domain-imbalanced.
Some categories are much larger than others, especially poetic and literary text.
Token counts are based on whitespace tokenization.

Citation

@dataset{tajpersparallelcorpus},
  title        = {Tajik–Persian Parallel Corpus},
  author       = {TajikNLPWorld},
  year         = {2026},
  publisher    = {Hugging Face},
  url          = {https://huggingface.co/datasets/TajikNLPWorld/TajPersParallelCorpus}
}