Matrix-decomposition

The homework of big data analysis.

data preprocessing

python preprocess.py

Only cost 6 seconds

Collaborative Filtering

python collaborative.py

Only cost 0.5 minutes, and the final rmse is 2.5169

基于梯度下降的矩阵分解算法

python matrix.py

The final rmse is 0.9388

For quick start

You can simply start with

sh main.sh