Data Analyst

• Jan 2021 - Present

Data Scientist Intern

• Jun 2019 - Jan 2021

Gathered and organized measured data via API, performed data cleaning, and visualization with R. Developed random forest model to make 48 hours prediction for target time series with accuracy rates at around 97%.Denoised time series data with discrete wavelet transform; clustered data into two groups via EM algorithm, identified key performance, and corresponding trend.Detected spikes in data by implementing Adaboost algorithm, achieved a 100% sensitivity rate and 85% accuracy rate, improved sensitivity rate by 43% compared with randomforest, and support vector machine.Developed shinyapp to show world environmental information embedded with searching functionality. Improved work efficiency of the sales team significantly. Show less

CRM Analyst

• Mar 2019 - May 2019

•Classified clients into 4 levels according to the willingness of transaction intention to improve the efficiency of marketing strategies.•Formulated action plans to refresh existing passed clients regularly to enhance the brand impression. Reached 175 clients.•Explored new prospective clients by targeting property and delivering the market report.

Marketing Assistant

• Apr 2018 - Mar 2019

•Created a Wechat public page, attracted 143 subscribers. •Analyzed history sale records, targeted potential clients, defined the flyer delivery region. Received one efficient phone call.•Implemented timeline in transaction file management, ameliorated working efficiency, reduced error rate and saved search time.•Presented property pricing tendencies, proposed property price to make clients make decisions.

Data Maintenance

• Jan 2016 - Jun 2016

•Monitored route accuracy of bus lines and updated real-time bus arrival information. •Managed client feedback, negotiated with the technical department in product improvement. •Monitored route accuracy of bus lines and updated real-time bus arrival information. •Managed client feedback, negotiated with the technical department in product improvement.