Recently, I read a thread on Twitter about several Machine Learning papers that contained severe cases of data leakage. The authors of the papers seemed unaware of this phenomenon and therefore trained models that performed exceptionally well. Unfortunately, this was mainly due to data leakage. Not many beginners are aware of this problem and in my opinion, not many courses emphasize this issue early enough. Therefore, I would like to tell you all the things you need to know about data leakage and some ways to prevent it in this post.
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Recent Posts: Data-Quality
Data Leakage in Machine Learning
Where to Eat in Munich?
I recently moved to a new city - Munich! I live in a very calm area, but soon realized that the neighborhood is not really the best when it comes to eating outside. So, I decided to try to analyze review data from the web to find out which area is most compelling for me and other foodies. I scraped online reviews, cleaned the data and then visualized it on a map, showing the average rating of restaurants in different areas in Munich.