Question: 1. Find the most frequent bigrams (20 pts) Please complete the freq_bigram function to find the nn most frequent bigrams. Your function should return

1. Find the most frequent bigrams (20 pts) Please complete the freq_bigram

function to find the nn most frequent bigrams. Your function should return

1. Find the most frequent bigrams (20 pts) Please complete the freq_bigram function to find the nn most frequent bigrams. Your function should return a list of top_n tuples. Each of the tuples should contain a bigram tuple (such as ('.')) and its number of occurrence. def freq_bigrams(tweets, top_n): bigram_counter = Counter() for tweet in tweets: # YOUR CODE HERE return bigram_counter.most_common(top_n) 2. Find the most frequent skipgrams (20 pts) In this exercise we will compute another commonly defined type of sequential patterns -- the skip-grams. Luckily this is also supported by NLTK. You can find the documentation here. Please implement the freq_skipgrams function to calculate the most frequently used kk-skip-nn-grams. Your function should return a list of top_n tuples. Each of the tuples should contain a kk-skip-nn-gram tuple (such as (Happy', 'Birthday', '')) and its number of occurrences. def freq_skipgrams (tweets, n, k, top_n): skipgram_counter = Counter() # YOUR CODE HERE

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