Summary
- This personal project was inspired by my own experience in housing market. I was wondering what I can achieve with public data and Data Science methods.
- Built upon extensive research of domain knowledge, my model is very simple yet powerful. It used the data with most information, followed the trends in space and time.
- The prediction accuracy is comparable to Zillow Zestimate, although I don’t really think this accuracy number matters too much. The variation is still too large which is in part due to the nature of house sale/bid process.
- Instead of trying to improve prediction accuracy numbers, I think it is more practical to list more reasonable comparable sales to user.