crowd-kit 0.0.8

Python libraries for crowdsourcing

Crowd-Kit: Computational Quality Control for Crowdsourcing

Documentation

Crowd-Kit is a powerful Python library that implements commonly-used aggregation methods for crowdsourced annotation and offers the relevant metrics and datasets. We strive to implement functionality that simplifies working with crowdsourced data.

Currently, Crowd-Kit contains:

• implementations of commonly-used aggregation methods for categorical, pairwise, textual, and segmentation responses
• metrics of uncertainty, consistency, and agreement with aggregate
• loaders for popular crowdsourced datasets

The library is currently in a heavy development state, and interfaces are subject to change.

Installing

Installing Crowd-Kit is as easy as pip install crowd-kit

Getting Started

This example shows how to use Crowd-Kit for categorical aggregation using the classical Dawid-Skene algorithm.

First, let us do all the necessary imports.

from crowdkit.aggregation import DawidSkene
from crowdkit.datasets import load_dataset

import pandas as pd

Then, you need to read your annotations into Pandas DataFrame with columns task, performer, label. Alternatively, you can download an example dataset.

df = pd.read_csv('results.csv')  # should contain columns: task, performer, label
# df, ground_truth = load_dataset('relevance-2')  # or download an example dataset

Then you can aggregate the performer responses as easily as in scikit-learn:

aggregated_labels = DawidSkene(n_iter=100).fit_predict(df)

More usage examples

Implemented Aggregation Methods

Below is the list of currently implemented methods, including the already available (✅) and in progress (🟡).

Categorical Responses

Method	Status
Majority Vote	✅
Dawid-Skene	✅
Gold Majority Vote	✅
M-MSR	✅
Wawa	✅
Zero-Based Skill	✅
GLAD	✅
BCC	🟡

Textual Responses

Method	Status
RASA	✅
HRRASA	✅
ROVER	✅

Image Segmentation

Method	Status
Segmentation MV	✅
Segmentation RASA	✅
Segmentation EM	✅

Pairwise Comparisons

Method	Status
Bradley-Terry	✅
Noisy Bradley-Terry	✅

Questions and Bug Reports

• For reporting bugs please use the Toloka/bugreport page.
• Join our English-speaking slack community for both tech and abstract questions.

License

© YANDEX LLC, 2020-2021. Licensed under the Apache License, Version 2.0. See LICENSE file for more details.