Linpeng Lyu

Linpeng Lyu

Mountain View, California, United States
3K followers 500+ connections

Activity

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Experience

  • Google Graphic

    Google

    San Francisco Bay Area

  • -

    San Francisco Bay Area

  • -

    San Jose

Education

Licenses & Certifications

Courses

  • Algorithm Analysis

    -

  • Algorithms and Advanced Data Structures

    15650

  • Applied Machine Learning

    11663

  • Big Data System in Practice

    11675

  • Cloud Computing

    15619

  • Compiler Principle and Implementation

    -

  • Computer Graphics and Human-Computer Interaction

    -

  • Computer Network

    -

  • Computer Structure

    -

  • Data Structure

    -

  • Database Application

    15615

  • Discrete Mathematics

    -

  • Distributed Systems

    15640

  • Fundamentals of Embedded System

    14642

  • Fundamentals of Telecommunication Networks

    14740

  • Introduction to Computer System

    15513

  • Java Program Design

    -

  • Java for Mobile Development

    18641

  • Machine Learning

    10601

  • Object-Oriented Programming

    -

  • Operating System

    -

  • Principles of Database

    -

  • Programming Foundation (C Language)

    -

  • Search Engine

    11642

  • Software Engineering

    -

Projects

  • WeDiscuz - Android real-time communication app

    -Implemented real-time video/voice group/personal chat using Agora.io and message notification
    -Designed back-end database using MySQL
    -Implemented back-end service using Servlet and JSP

    Other creators
  • Twitter Analytics Web Service on the Cloud

    -Ranked 3rd (3/78) on the Live Test Performance Competition.
    -Designed and implemented the front-end and the back-end system for Tweets analytics on AWS
    -Extracted, transformed and loaded (ETL) 1TB tweet raw data using AWS Elastic MapReduce
    -Designed fine-tuned HBase and MySQL back ends to serve concurrency requests of four different types of queries
    -Implemented high-performance front-end web server to communicate with the back-end database using Vert.x

    Other creators
  • fMRI Data Analysis using Machine Learning Model

    -

    -Built kernelized SVM model (RBF kernel) using LIBSVM (matlab) and Scikit - Learn (Python) to conduct multi-class classification of fMRI brain scan data (5903 voxels) with accuracy more than 60%
    -Predicted missing fMRI image data using the combination of ridge regression and lasso models (sciket-learn in Python) with RMSE 0.43
    -Used semi-supervised learning to improve the classi cation accuracy in part 1 (sciket-learn in Python)

    Other creators
  • Text Based Search Engine

    -

    -Implemented a text-based search engine using Lucene library which evaluates score by DAAT policy
    -Implemented exact-match (Unranked and Ranked Boolean Retrieval) and best-match retrieval models (BM25 and Indri)
    -Supported both unstructured query (BOW) and structured query (multiple presentation, SDM and combination)
    -Implemented pseudo relevance feedback for Indri to support query expansion
    -Applied machine learning approach (SVMrankand 18 query-dependent/independent features) to…

    -Implemented a text-based search engine using Lucene library which evaluates score by DAAT policy
    -Implemented exact-match (Unranked and Ranked Boolean Retrieval) and best-match retrieval models (BM25 and Indri)
    -Supported both unstructured query (BOW) and structured query (multiple presentation, SDM and combination)
    -Implemented pseudo relevance feedback for Indri to support query expansion
    -Applied machine learning approach (SVMrankand 18 query-dependent/independent features) to rerank initial result.

  • 15513: Intro. to Computer System Project

    -

    -Implemented a HTTP proxy server that deals with multiple concurrent request using Robust I/O and POSIX Thread and supports cache
    -Implemented a general purpose dynamic storage allocator using segregated free lists to organize free blocks and LIFO policy to find free blocks and wrote malloc, free, realloc, calloc and heap-cheaker function in my own version
    -Implemented a UNIX shell supporting job control, signal handle and I/O redirection
    -Implemented a cache simulator using LRU…

    -Implemented a HTTP proxy server that deals with multiple concurrent request using Robust I/O and POSIX Thread and supports cache
    -Implemented a general purpose dynamic storage allocator using segregated free lists to organize free blocks and LIFO policy to find free blocks and wrote malloc, free, realloc, calloc and heap-cheaker function in my own version
    -Implemented a UNIX shell supporting job control, signal handle and I/O redirection
    -Implemented a cache simulator using LRU (least-recently used) replacement policy which simulated miss/hit behavior

  • Sentiment Computation of Twitter Text Based on Social Network

    -

    -Annotated twitter messages about the American presidential debate
    -Built sentiment relations among messages based on social theory by using Matlab
    -Filtered stop words and constructed the feature space using unigrams combining with network matrix
    -Accomplished multi-class classification using SVM (linear kernel, LIBSVM)

    Other creators

Honors & Awards

  • First Prize Scholarship

    Jilin University

  • INI Scholarship

    Information Networking Institute at CMU

  • Ten Best Undergraduates of Jilin University

    Jilin University

    The highest honor at JLU

  • CSC-IBM Outstanding Student Scholarship

    China Scholarship Council; IBM

    1 of 45 undergraduate winners within China

  • National Scholarship

    Ministry of Education of China

    Top 1% at Jilin University

  • Shianghao Wang Scholarship

    Jilin University

    2 / 1,000. One of two winners in School of Software at Jilin University.

  • National Scholarship

    Ministry of Education of China

    Top 1% at Jilin University

  • Qihoo360 Scholarship

    Qihoo 360 Technology Co. Ltd

    2 / 1,000. One of two winners in School of Software at Jilin University

  • Meritorious Winner

    COMAP's Mathematical Contest in Modeling (MCM)

    Top 15% worldwide.

  • National Scholarship

    Ministry of Education of China

    Top 1% at Jilin University

Languages

  • English

    Professional working proficiency

  • Chinese

    Native or bilingual proficiency

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