Recent Posts

• November 16, 2019

  Super 在Python中的用法

  经常在别人的code里面看到super，但是一直不太清楚具体的用法，官方的文档非常technical，于是在网上找到一个还不错的资源，终于有了点眉目。这篇post主要是根据我自己的理解重新阐述（翻译）一遍原资源的takeaways以防日后我又忘了的时候可以马上记起来。Super的基本用法先来看这样一个例子。我们想要计算矩形Rectangle和正方形Square的周长和面积。class Rectangle: def __init__(self, length, width): ...

• July 08, 2018

  Recommendation Systems for Implicit Feedback Dataset - Part 1

  This is the first of a series of non-comprehensive paper reviews for the recommendation systems for implicit feedback datasets.Navigations Part 1: Hu, Yifan, Yehuda Koren, and Chris Volinsky. “Collaborative filtering for implicit feedback dataset...

• October 08, 2017

  Build a vanilla movie recommender with Spark

  This is a lab originally from the edX course: Big Data Analysis with Apache Sparkwhere I learned how to construct a machine learning pipeline with Spark. There I’ve added with minor modifications to code about parameters tuning.In this post, you a...

• July 10, 2017

  NLP: Get hands dirty with Word2Vec

  Last time I wrote a post about words co-ocurrences matrix: basically why do we need it and how to create it, along with taking advantage of SVD to reduce dimensions. In this quick post, I will go directly to the implementations of Word2Vec in the ...

• July 09, 2017

  NLP: Words co-ocurrences matrix

  From now and then I will update a series of posts about very basic NLP IPython book demonstrations, just for my own purpose: keeping track of learning progress & connecting each dot into one line. This is my very first post about NLP where mos...