Q1. A trigram is a second-order Markov model. Derive the formula to calculate trigram probability. Next, calculate the trigram probabilities for the given corpus. (eos) Can I sit near you (eos) You can sit (eos) Sit near him (eos) I can sit you (eos) Q2. A character based N-gram is a set of n consecutive characters extracted from a word. It is generally used in measuring the similarity of character strings. Some of its applications are in spellcheckers, stemming, OCR error correction, etc. Given, four valid words: (a)quote (b)patient (c)patent (d) impatient Q3. Calculate the probability of occurrence of each word given below. Which of these represent the correct spelling? (a)qotient (b)quotent (c) quotient