In New York City, cultural diversity has promoted the growing number of restaurants. However, food sanitation has always been a concern for public health. The project focuses on discovering whether violation results from restaurants inspections would have any strong correlations with food poisoning. Restaurants inspection results from DOHMH as well 311 complains are used and analyzed through random forest ensemble learning method. The results indicates that violations found in food sourcing and restaurant facility design have stronger correlation than other factors with regards to foodborne illness incidents.
During summer season, it is expected that more tourists will visit New York City during weekends and make use of Citibike to explore. The Citibike Mini-project selected the rider's data of 2017 August to measure if the proportion of short-term riders (tourists) is higher during the weekends. Mann-Chi-Square test is performed based on two randomly extracted samples (one sample from weekday rides, and the other one from weekend rides; the sample size is 5000). The result rejected the null hypothesis. which demonstrates that the proportion of short-term riders riding during weekend is higher than the proportion of short-term riders riding during weekdays.