README.md

metadata

license: cc-by-4.0
language:
  - fi
task_categories:
  - image-to-text
pretty_name: Theseus Finnish OCR Tiny
dataset_info:
  features:
    - name: pdf_file
      dtype: string
    - name: page
      dtype: int32
    - name: text
      dtype: string
    - name: image
      dtype: image
  splits:
    - name: train
      num_examples: 16618
tags:
  - parquet
size_categories:
  - 10K<n<100K

Theseus Finnish OCR Dataset

Paragraph-level OCR dataset harvested from Theseus.fi, the Finnish repository of university of applied sciences theses.

Each record is one paragraph crop extracted from a thesis PDF, paired with the text extracted by pdfplumber.

Image Resolution

Paragraph crops are rendered at 300 DPI (dots per inch) with 2 px padding on each side. At 300 DPI a standard A4 page is 2481 × 3507 pixels, giving high enough resolution for training OCR and document-understanding models.

Fields

Field	Type	Description
pdf_file	string	Source PDF filename
page	int	Page number (1-indexed)
image	Image	Paragraph crop at 300 DPI with 2 px padding on each side
text	string	Extracted paragraph text from pdfplumber

Source

Records were harvested via the Theseus OAI-PMH endpoint and 10 PDFs were downloaded from the DSpace bitstream API.