###Note: The files were processed to make them compatible for the data sprint @HuggingFace (Dec 2020)

The OHSUMED test collection is a set of 348,566 references from MEDLINE, the on-line medical information database, consisting of titles and/or abstracts from 270 medical journals over a five-year period (1987-1991). The available fields are title, abstract, MeSH indexing terms, author, source, and publication type. The National Library of Medicine has agreed to make the MEDLINE references in the test database available for experimentation, restricted to the following conditions:

1. The data will not be used in any non-experimental clinical, library, or other setting.
2. Any human users of the data will explicitly be told that the data is incomplete and out-of-date.

The OHSUMED document collection was obtained by William Hersh ([email protected]) and colleagues for the experiments described in the papers below:

Hersh WR, Buckley C, Leone TJ, Hickam DH, OHSUMED: An interactive retrieval evaluation and new large test collection for research, Proceedings of the 17th Annual ACM SIGIR Conference, 1994, 192-201.

Hersh WR, Hickam DH, Use of a multi-application computer workstation in a clinical setting, Bulletin of the Medical Library Association, 1994, 82: 382-389.

Here are the field definitions:

Note: some abstracts are truncated at 250 words and some references have no abstracts at all (titles only). We do not have access to the full text of the documents.

The train test distribution is as follows. Test data size is larger than train size!

Train:  54,710
Test : 293,858

The original dataset is in a weird format. Its something similar to this:

Row 1  Col 1
Row 1
Col 2
Row 1
Col 3
.
.
Row 2 Col 1
Row 2
Col 2 
Row 2
Col 3

Check the notebook in the repo for the pre-processing details