Wordpredictor is a R package for developing and evaluating n-gram models. It provides methods for data analysis, data cleaning, data sampling, converting text to tokens, generating n-gram transition probabilities, generating n-gram models and evaluating n-gram model performance.

N-gram models have applications in many areas such as spell checking, biological sequence analysis, speech recognition, word prediction and more. In this article I will provide an overview of n-gram models.

In the N Diagonal problem, we have a board containing NxN squares. Each square can have 2 diagonals, but the diagonals of neighboring squares should not intersect. A square can have three possible states. Either empty, a left diagonal or a right diagonal. We need to find out if it is possible to have X number of diagonals.

Recursion is one method for proving statements mathematically. It is a powerful concept that has important applications in Computer Science. In this article I will describe how to use the technique of Recursion to prove a statement mathematically.