I Failed the Turing Test

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Recommender System: Collaborative Filtering 協同過濾推薦演算法

Posted on 2017-01-312019-10-22Author VintaPosted in Machine Learning

dataset 會是 m 個用戶對 n 個物品的評分 utility matrix,因為通常只有部分用戶和部份物品會有評分資料,所以是一個 sparse matrix(稀疏矩陣)。目標是利用這些稀疏的資料去預測出用戶對他還沒評分過的物品的評分。

Parallel tasks in Python: concurrent.futures

Posted on 2017-01-252019-10-22Author VintaPosted in Python

concurrent.futures is well suited to Embarrassingly Parallel tasks. You could write concurrent code with a simple for loop.

Machine Learning glossary 常見名詞解釋

Posted on 2017-01-232019-10-22Author VintaPosted in Machine Learning

機器學習常見名詞解釋

Convert utf8 tables to utf8mb4 in MySQL

Posted on 2017-01-232019-10-22Author VintaPosted in Database

Don’t blindly copy-paste this!

Create a custom migration in Django

Posted on 2017-01-232019-10-22Author VintaPosted in Database, Python

ALTER TABLE app_repostarring CHANGE repo_description repo_description VARCHAR(191) CHARACTER SET utf8mb4 COLLATE utf8mb4_unicode_ci;

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