---
language:
  - en
multilinguality:
  - monolingual
license: other
license_name: topicnet
license_link: >-
  https://github.com/machine-intelligence-laboratory/TopicNet/blob/master/LICENSE.txt
configs:
  - config_name: "20ng"
    default: true
    data_files:
      - split: train
        path: "data/20NG.csv.gz"
      - split: test
        path: "data/20NG_test.csv.gz"
task_categories:
  - text-classification
task_ids:
  - topic-classification
  - multi-class-classification
  - multi-label-classification
tags:
  - topic-modeling
  - topic-modelling
  - text-clustering
  - multimodal-data
  - multimodal-learning
  - modalities
  - document-representation
---


# 20 Newsgroups

## Train

Some measurable characteristics of the dataset:

* D — number of documents
* <modality name> W — modality dictionary size (number of unique tokens)
* <modality name> len D — average document length in modality tokens (number of tokens)
* <modality name> len D uniq — average document length in unique modality tokens (number of unique tokens)


|       |    D |   @lemmatized W |   @lemmatized len D |   @lemmatized len D uniq |   @bigram W |   @bigram len D |   @bigram len D uniq |
|:------|------------:|-----------------------:|---------------------------:|--------------------------------:|-------------------:|-----------------------:|----------------------------:|
| value |       11301 |             1.0614e+06 |                    93.9204 |                         60.5687 |             213701 |                18.9099 |                     15.0068 |


Information about document lengths in modality tokens:


|      |   len_total@lemmatized |   len_total@bigram |   len_uniq@lemmatized |   len_uniq@bigram |
|:-----|-----------------------:|-------------------:|----------------------:|------------------:|
| mean |                93.9204 |            18.9099 |               60.5687 |           15.0068 |
| std  |               276.901  |            66.4278 |              104.23   |           39.1756 |
| min  |                 0      |             0      |                0      |            0      |
| 25%  |                20      |             3      |               19      |            3      |
| 50%  |                42      |             8      |               35      |            8      |
| 75%  |                83      |            16      |               65      |           15      |
| max  |              6497      |          1528      |             1875      |          831      |


**Metadata**: known class labels (20 classes).