F. Shen

Algorithm Engineer

Free Verse Polynomial

Welcome to my blog.

I draft some notes on math and programming here, along with my monologue.

As an algorithm engineer, there are several topics that I’ve studied and worked on, such as recommender system, search, natural language processing, parallel computation, data science, and symbolic computation. If anything interests you, feel free to email me.

Recent Posts

English

Notes on L-BFGS and Wolfe condition

I toke some notes on quasi-Newton methods in this article, including an intuitive derivation of BFGS formula and a demonstration of Wolfe condition. The algorithm, convergence results and limit memory version were discussed as well.

2020-11-22 23:29 Mathematics

Better Intent Classification via BERT and MMS

1. Background 2. BERT: higher accuracy and less handcraft Replace manual features Replace classifier for dense feature 3. Scaling with MXNet Model Server Customization Load test 4. Recap In this article, I will give a brief introduction on how to improve intent classification using pre-trained model BERT and MXNet Model Server (MMS).

2020-09-18 19:09 Machine Learning

Distributed Majority Voting Algorithm in Julia

1. Introduction 2. Sequential Boyer-Moore algorithm 3. Distributed majority voting algorithm Multi-processing Multi-Threading Complexity analysis for distributed version 4. Benchmark 5. Summary 1. Introduction The original majority voting problem is to find the element that appears more than half times in a given array, and if there is no such majority element, algorithm should just return empty result.

2020-09-08 16:05 Algorithm

Chinese

Wounds and Choices

前几日听《硬影像》最新的两期节目，讲游戏神作 The Last of Us 中的叙事与人物，很多观点让人共鸣。Wounds and choices，都是

2019-04-01 01:02 Movie

港岛初窥

香港，一个华人世界里非常特殊的城市。无论是成长过程中千丝万缕的文化联系，还是随着墙之升高而带来的种种现实层面的动机，都使

2019-02-17 00:37 Travel

General Form of Back Propagation, Part 1

反向传播(Back Propagation, BP)是深度学习优化算法的核心，虽已有大量文章来介绍这个算法，但可惜往往都拘泥于某种具体模型，比如 Multilayer

2017-10-10 16:59 Machine Learning