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Chengjun Yuan's Projects

data_mining_in_r icon data_mining_in_r

Data mining using R including several home work projects and final projects

handson-ml icon handson-ml

A series of Jupyter notebooks that walk you through the fundamentals of Machine Learning and Deep Learning in python using Scikit-Learn and TensorFlow.

informationretrieval icon informationretrieval

Real Yelp review data, cosine similarity ranking of query review in Vector Space, TF-IDF model. Unigram, Bigram Language model with linear interpolation smoothing, absolute discounting smoothing, Dirichlet smoothing. Perplexity analysis. Evaluations of six language models, including boolean, TF-IDF, Okapi BM25, Pivoted Length Normalization, Jelinek-Mercer smoothing, Dirichlet Prior Smoothing. The evaluation methods include Mean Average Precision, P@K, Reciprocal rank, Normalized Discount Cumulative Gain (NDCG).

machinelearning icon machinelearning

Linear Regression, Ridge Regression, SVM, Facial Expression Recognition

operatingsystem icon operatingsystem

kernel operation, Linux shell, multi-threads, sudoku, multi-thread synchronization, mutex, semaphore, conditional variable, barrier, page faults, virtual memory management, TLB, page table, LRU, Virtual file management system.

popular-movies-app icon popular-movies-app

A simple Android app, that helps you discover most popular and most rated movies. Project 1 & 2 of Udacity Android Developer Nanodegree.

spark icon spark

Scala projects running in Spark

training-data-analyst icon training-data-analyst

Labs and demos for courses in the Data Engineer track of GCP Training (http://cloud.google.com/training).

web-design icon web-design

Design Interactive websites using HTML, CSS (Boostrap), JavaScript (jQuery), Node.js, Express framwork, AngularJS and MongoDB.

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