README.md

---
dataset_info:
  features:
  - name: date
    dtype: date32
  - name: competitor_1
    dtype: string
  - name: competitor_2
    dtype: string
  - name: outcome
    dtype: float64
  - name: match_id
    dtype: string
  - name: page
    dtype: string
  splits:
  - name: league_of_legends
    num_bytes: 26169433
    num_examples: 151191
  - name: counterstrike
    num_bytes: 32225593
    num_examples: 228435
  - name: rocket_league
    num_bytes: 28789234
    num_examples: 187560
  - name: starcraft1
    num_bytes: 14403669
    num_examples: 118147
  - name: starcraft2
    num_bytes: 64108013
    num_examples: 462943
  - name: smash_melee
    num_bytes: 48143609
    num_examples: 421280
  - name: smash_ultimate
    num_bytes: 33192412
    num_examples: 287595
  - name: dota2
    num_bytes: 10683912
    num_examples: 82660
  - name: overwatch
    num_bytes: 5930878
    num_examples: 41428
  - name: valorant
    num_bytes: 11710786
    num_examples: 84373
  - name: warcraft3
    num_bytes: 16724122
    num_examples: 141327
  - name: rainbow_six
    num_bytes: 11846712
    num_examples: 82565
  - name: halo
    num_bytes: 2547519
    num_examples: 17048
  - name: call_of_duty
    num_bytes: 3451092
    num_examples: 23488
  - name: tetris
    num_bytes: 1049271
    num_examples: 8272
  - name: street_fighter
    num_bytes: 20594773
    num_examples: 125955
  - name: tekken
    num_bytes: 12591253
    num_examples: 80059
  - name: king_of_fighters
    num_bytes: 3276683
    num_examples: 20308
  - name: guilty_gear
    num_bytes: 4455586
    num_examples: 28310
  - name: ea_sports_fc
    num_bytes: 5737025
    num_examples: 43323
  download_size: 40451016
  dataset_size: 357631575
configs:
- config_name: default
  data_files:
  - split: league_of_legends
    path: data/league_of_legends-*
  - split: counterstrike
    path: data/counterstrike-*
  - split: rocket_league
    path: data/rocket_league-*
  - split: starcraft1
    path: data/starcraft1-*
  - split: starcraft2
    path: data/starcraft2-*
  - split: smash_melee
    path: data/smash_melee-*
  - split: smash_ultimate
    path: data/smash_ultimate-*
  - split: dota2
    path: data/dota2-*
  - split: overwatch
    path: data/overwatch-*
  - split: valorant
    path: data/valorant-*
  - split: warcraft3
    path: data/warcraft3-*
  - split: rainbow_six
    path: data/rainbow_six-*
  - split: halo
    path: data/halo-*
  - split: call_of_duty
    path: data/call_of_duty-*
  - split: tetris
    path: data/tetris-*
  - split: street_fighter
    path: data/street_fighter-*
  - split: tekken
    path: data/tekken-*
  - split: king_of_fighters
    path: data/king_of_fighters-*
  - split: guilty_gear
    path: data/guilty_gear-*
  - split: ea_sports_fc
    path: data/ea_sports_fc-*
---
TESTING

# EsportsBench: A Collection of Datasets for Benchmarking Rating Systems in Esports

EsportsBench is a collection of 20 esports competition datasets. Each row of each dataset represents a match played between either two players or two teams in a professional video game tournament.
The goal of the datasets is to provide a resource for comparison and development of rating systems used to predict the results of esports matches based on past results. Date is complete up to 2024-03-31.

### Recommended Usage
The recommended data split is to use the most recent year of data as the test set, and all data prior to that as train. There have been two releases so far:
* 1.0 includes data up to 2024-03-31. Train: beginning to 2023-03-31, Test: 2023-04-01 to 2024-03-31
* 2.0 includes data up to 2024-06-30. Train: beginning to 2023-06-30, Test: 2023-07-01 to 2024-06-30

```python
import polars as pl
import datasets
esports = datasets.load_dataset('EsportsBench/EsportsBench', revision='1.0')
lol = esports['league_of_legends'].to_polars()
teams = pl.concat([lol['competitor_1'], lol['competitor_2']]).unique()
lol_train = lol.filter(pl.col('date') <= '2023-03-31')
lol_test = lol.filter((pl.col('date') >'2023-03-31') & (pl.col('date') <= '2024-03-31'))
print(f'train rows: {len(lol_train)}')
print(f'test rows: {len(lol_test)}')
print(f'num teams: {len(teams)}')
# train rows: 104737
# test rows: 17806
# num teams: 12829
```

The granulularity of the `date` column is at the day level and rows on the same date are not guaranteed to be ordered so when experimenting, it's best to make predictions for all matches on a given day before incorporating any of them into ratings or models.

```python
# example prediction and update loop
rating_periods = lol.group_by('date', maintain_order=True)
for date, matches in rating_periods:
    print(f'Date: {date}')
    print(f'Matches: {len(matches)}')
    # probs = model.predict(matches)
    # model.update(matches)
# Date: 2011-03-14
# Matches: 3
# ...
# Date: 2024-03-31
# Matches: 47
```


### Data Sources
* The StarCraft II data is from [Aligulac](http://aligulac.com/)
* The League of Legends data is from [Leaguepedia](https://lol.fandom.com/) under a [CC BY-SA 3.0](https://creativecommons.org/licenses/by-sa/3.0/)
* The data for all other games is from [Liquipedia](https://liquipedia.net/) under a [CC BY-SA 3.0](https://creativecommons.org/licenses/by-sa/3.0/)