wenzheevelyn xu 2174179270 wxu23illinoisedu address 100 24 ave 3 san mateo ca 94403 core qualifications overall highlight solid data science background data engineer skill sets applied industry statistical skill data manipulation etl extracttransformloading data technique large dataset impala 1x modeling machine learning regression classification clustering categorical data analysis time series analysis sampling anova analysis ab testing dimension reduction model selection computer skill programming expertise r 4yrdplyrggplot2shiny python 1yr scipy numpy pandas scikitlearn sql3yr data engineering apache impala 1x apache hadoop 2x cloudera cdh 5x apache spark 1x software system sas advanced certified spss looker linux centos65 microsoft office map reduce communication presentation meeting business colleagues transfer commercial goal datadriven objective quick response lateradded requirement business side presentation modeling result data insight ppt building interactive dashboard shiny project management able track stage according scheduled timeline independent project education background university illinois urbanachampaign master science statisticsanalytics major gpa39640 tianjin university finance economics tianjin china 9200962013 bachelor science statistics overall gpa 37540 major gpa4040 professional experience data scientist intern mastercard inc san carlos ca 8201352015 62015 122015expected independently designed automatic anomalies detection system business metrics time series data researched anomaly detection algorithm finally choose shesd test twitter basic logic read package source code r reorganized logic input fit business metrics data application scenario integrating special requirement business engineer staffs execution used impalasql etl data production complied r code mapper reducer function python group id mapper key set mapreduce data pipeline job oozie build ppt presentation interactive dashboard shiny collecting feedback algorithm team quick response additional need business engineer colleagues collaborative tasks projects helped write mapper reducer function word count merchant classification based transection records build hadoop cluster 12 nodes including tuning critical parameters responsible maintenance memory usage related package installation centos 65 linux environment participated cloudera training apache spark techsale analytics intern anheuserbusch inbev champaign il customer profiling social media data source internal wholesaler database 52014 52015 learned original algorithm created advanced string cleaning step foursquareyelp database improved whole workflow adding latlon information well innovative filters increase mapping accuracy wrote integrated steps pipelined r code future usage cooperated 3 party build dashboard overcame challenges handling asian languages popularized customer profiling project global market mentored new interns taking customer profiling work flow quantitative exploration experiment projects ad hoc predicted volume poc logistic models learning algorithms identified influencing pocs used regression tree predict number pipe needed target volume belgium onpremise market transfer data analysis result commercial insight presented business managers regular basis