A prototype implementation of ClusChurn based on PyTorch.

1. preprocess.py: Preprocess messaging, discover and lens activity data in the data folder to generate act_data.pkl and link_data.pkl it can also draws daily activity and link plots input: data downloaded from google bigquery output: data.pkl: list of 2-d np array (dayact /1510)

2. fit.py: Feature engeering. Computes means and lags of activity data, fit by kmeans and draw the plots input: data.pkl output: params.pkl: 3-d np array (#user*#act2) churns.pkl: 1-d np array (#user) labels.pkl: labels: 2-d np array (#act#user), centers: 3-d np array (#actk2) it also generates param, mixed and single plots of all activities

3. kmeans.py (helper function) Kmeans with automatic selection of k

4. evaluate.py (helper function) Computation of f1, jc and nmi scores between two clustering results

5. cross.py Visualize the correlations among activities input: labels.pkl output: cross.txt (values in the grid plots of correlations)

6. multiview.py - our main clustering pipeline in the paper Every user is replaced by its nearest cluster center, show the most significant combinations. The number of clusters K is automatically chosen. input: labels.pkl output: multiview.txt: K outstanding clusters soft.pkl: soft labels of users to clusters based on t-distribution (#users*K)

7. link.py evaluate link smoothing intuitions, compute the portion of linked same-type users input: linkset.txt, multiview.pkl output: print out portion of linked same-type users

8. regress.py baseline algorithms for performance comparison input: act_data.pkl, churn.pkl output: accuracy, precision and recall of churn prediction

9. model.py - our main prediction pipeline in the paper parallel lstm model -- a simplified implementation with pooling. input: act_data.pkl, churn.pkl output: accuracy, precision and recall of churn prediction

10. core.py find the core and evaluate its overlap with new users' friends input: core_user, core_friend, core_degree (raw data from big query extraction) output: print out percentage of friends in core, save the degree distribution figure