A System Description of P^4: Possible Punctuation Points Parser

We present a Natural Language Understanding (NLU) implementation that automatically inserts punctuation marks into a sequence of words to create a group of one or more syntactically correct sentences. The software, Possible Punctuation Points Parser (P^4) provides the ability for the user to input a string of words to process, performs the punctuation possibilities, and then provides several visualizations to illustrate how the software arrived at its final solution. P^4 uses a chart parsing algorithm combined with a search algorithm that creates data visualization structures. A potential application of this software is to serve as a formidable starting point for automatic punctuation mark insertion during voice-to-text conversion found on many mobile platforms.