CREX : CReate, Enrich, eXtend for crowdsourcing evaluation datasets

CREX (CReate, Enrich, eXtend) is a framework allowing the creation the extension and the enrichment of crowdsourcing datasets such as CrowdED. CREX allows a clustering based tasks selection and the generation of crowdsourcing campaign sites. Code is in Python for the computational parts and in Javascript for the campaign generation tool.

Getting started

1. Installation :

To start using the components of CREX start by downloading the source code here

2. Dependencies :

The code is developped in Python v3.5.2. The following packages are needed:

scikit-learn : http://scikit-learn.org/stable/ (clustering and evaluation measures)
pandas : http://pandas.pydata.org/ (data structure and matrix handling)
scipy : https://www.scipy.org/ (scientific computing library)
numpy : http://www.numpy.org/ (scientific computing library)
seaborn : https://seaborn.pydata.org/ (data visualization)
nltk : https://www.nltk.org/ (natural language processing)
gensim : https://radimrehurek.com/gensim/ (doc2vec implementation)
termcolor : https://pypi.python.org/pypi/termcolor (visual console output)

To install all dependencies at once run the command:

cd CREX
pip3 install -r dependencies

Project Structure

CREX
|-- CREXC : contains the code for the campaign generation modules
|   |-- CREX_C.py : The main module of CREXC
|   |-- config : The configuration file of CREXC
|   `-- Campaign : The campaign site data and structure
|       |-- PrivateConfig : contains the private config of the database
|       `-- UI : contains the user interface elements and data of the campaign site
|-- CREXD : contains the code for the computational core of CREX.
|   |-- VM.py : The vectorizing Module
|   |-- CM.py : The Clustering Module
|   |-- SM.py : The Sampling Module
|   |-- EM.py : The Evaluation Module
|   |-- CREX_D.py : The main module of CREXD
|   |-- Tools.py : Divers tools for data manipulation
|   |-- main_config : The level 1 configurations of CREXD
|   |-- more_config : The level 2 configurations of CREXD
`-- dependencies : The python library dependencies list

Tutorial

CREXD

Step 1: Configure - CREXD consists of standalone modules. They can be used together or separately to achieve different clustering, vectorizing, sampling and task selection steps. In order to use one or more module of CREX at a time, the CREXD configuration panel can be used.

Here is a list of the configurable parameters of CREXD:

parameter name	values	description
preprocess_	[True/False]	preprocess the data or not, i.e., tokenize/stemm/train the vectorizer models. If False a pre-processed data folder should be given.
vectorize_	[True/False]	compute the feature vectors or not, e.g., TFIDF transform. If False a pre-processed data folder should be given.
cluster_	[True/False]	run CM or not.
sample_	[True/False]	run SM or not.
evaluate_	[True/False]	run EM or not.
distance_metric_	[euclidean/cosine]	distance metric to be used by CM.
doc_sample_sizes	[array of size 1]**	e.g. [1000] If a large corpus is used to train the vectorizers, a subsample of this corpus can be vectorized and clustered if needed
preprocess_tfidf	[True/False]	whether to train the TFIDF vectorizer or not
preprocess_doc2vec	[True/False]	whether to train the Doc2Vec vectorizer or not
different_custering_data	[True/False]	whether to use a corpus different from the one used for training the models or not
n_clustering_processes	[integer]	(range depends on your computer). Number of processes for the parallel execution of the clustering
n_evaluation_processes	[integer]	(range depends on your computer). Number of processes for the parallel execution of the evaluation
kmeans_k_	[array of values/PARI]*	number of cluster for Kmeans.
minibatch_km_	[0/INTEGER]	if O minibatch is not used, else minibatch is run with the given batch size
dbscan_min_points_	[array of values/PARI]*	the minimum point parameter of DBSCAN
dbscan_eps_	[array of values/PARI]*	the EPSILON parameter of DBSCAN
agg_k_	[array of values/PARI]*	number of cluster for the agglomerative clustering.
agg_linkage_	['ward', 'complete', 'average']	the linkage parameter of the agglomerative clustering.
doc2vec_sizes_	[array of size 1]**	size of produced Doc2vec vectors
doc2vec_windows_	[array of size 1]**	size of used Doc2vec window
tfidf_vector_sizes_	[array of size 1]**	size of produced TFIDF vectors
tfidf_pca_	[True/False]	whether to use PCA dimension reduction or not
tfidf_vector_sizes_pca_	[array of size 1]	size of the PCA vector
sampling_fitness	[rmse/minmax]	the objective function of the dampling algorithm
max_sample_size_	[INTEGER]	size of output sample ("S" in the draft)
min_samples_per_cluster_	[INTEGER]	minimum sample size per cluster ("th" in the draft)
max_sampling_iteration_	[INTEGER]	maximum number of itterations ("itt" in the draft)
eva_measures	[array of ('hcv'/'sil'/'coc')]	the evaluation measres to compute by the EM
eva_vectorizing_models	['tfidf'/'doc2vec']	the vectorizing modules to evaluate
eva_clustering_models	['kmeans'/'agg'/'dbscan']	the clustering modules to evaluate
result_folder	[PATH string]	a path to the output folder
raw_data_folder	[PATH string]	a path to the input data folder
preprocessed_location	[PATH string]	a path to the preprocessed data folder
raw_clustering_data_folder	[PATH string]	a path to the data to cluster if (different_custering_data is True)
clustering_vectorizing_combs	[array of ('clustModel_vectModel')]	e.g. ['kmeans_tfidf', 'dbscan_doc2vec'] tells the VM and CM what models to train

PARI = python array range initialization e.g [i for i in range(1,2,3)]
* the algorithm is run len(array) times.
** (array is used to allow future implementation of multi config study)

For the following configurations detailed information can be found in the Sklearn library

parameter name	values
kmeans_init	['kmeans++'/'random']
kmeans_n_init	INTEGER
kmeans_n_job	INTEGER
kmeans_max_iter	INTEGER
kmeans_verbose	INTEGER
dbscan_algorithm	['auto'/'brute']
dbscan_leaf_size	None
dbscan_p	INTEGER

For the following configurations detailed information can be found in the Gensim library

parameter name	values
doc2vec_dm	INTEGER
doc2vec_alpha	FLOAT
doc2vec_min_alpha	FLOAT
doc2vec_min_count	INTEGER
doc2vec_iter	INTEGER
doc2vec_negative	INTEGER

Step 2: Run -
The configuration panel allows you to download 2 configuration files : main_config and more_config. After downloading these file launch the following command in your terminal in order to launch CREXD:

> python3 CREX_D.py [PATH/TO/]main_config [PATH/TO/]more_config

CREXC

Step 1: Configure -
CREXC allows to format your raw data csv file to be used by the campaign site. In order to structure these raw data, use the CREXC configuration panel. It consists of a configuration generation tool that takes the users data description and generate a structured output of them.

> python3 CREX_C.py [PATH/TO/]data.csv [PATH/TO/]config

References

anonymous.