4. Now we consider to compute the similarity between the query "the covid drug" and the document "the covid drug and the covid vaccine". Assume N=100,000, and treat "and" \& "the" as the stop words. Following table list the document frequency df for each word. [15 points] 1) Calculate the TF-IDF weights for the query and the document 2) Compute the cosine similarity between the query and the document