Mandy Ze Chen Email and Phone Number

- Used various word embeddings to embed articles, including Bag of Words, Doc2Vec, BERT embeddings- Evaluated news ecosystem by combining supervised classifier and clustering; use name entity recognition to name clusters

- Collaborated with Cyber Security Department to build an automated monitoring system to detect suspicious user behavior and time slice in API logs. Utilized machine learning (Clustering, Isolation Forest, PCA), deep learning (Autoencoder) and data mining (invariants mining) approaches for anomaly detection; Use TF-IDF to improve transformed data- Built data preprocessing pipeline; reproduced experiments from academic papers and modified algorithms for internal data; communicated with… Show more - Collaborated with Cyber Security Department to build an automated monitoring system to detect suspicious user behavior and time slice in API logs. Utilized machine learning (Clustering, Isolation Forest, PCA), deep learning (Autoencoder) and data mining (invariants mining) approaches for anomaly detection; Use TF-IDF to improve transformed data- Built data preprocessing pipeline; reproduced experiments from academic papers and modified algorithms for internal data; communicated with product team and presented results to stakeholders Show less

- Used propensity score matching and statistical tests to compare neurological outcome and discharge survival of Extracorporeal membrane oxygenation patient group with conventional CPR patient group

- Managed inpatient and outpatient living kidney donor database; completed periodical data queries and data validations; wrote reusable R and STATA scripts; performed hypothesis testing, exploratory data analysis and visualization- Compared living kidney donor’s medical assessment costs after conducting comprehensive literature review; analyzed how different factors affect donation decisions, which later contributed to procedural changes in donor evaluation process

- Conducted research on China, South Korea, Japan’s commitment on tax administration, and access their level of compliance; Prepared 2016 G20 Hangzhou Summit Interim Compliance Report and Final Compliance Report