Goal: Apply a Shiny app to predict the next word of a phrase.

Prediction Algorithm: N-Gram Models

• Principle: Estimate the conditional probability of a word to complete a given phrase of n words, and present the word with the highest conditional probability.

• Methods: Construct (unigrams), bigrams, trigrams, and fourgrams to predict the next word.

The Word Prediction APP will predict the next word of an incomplete phrase (multiple words).

Data: SwiftKey (blogs, news, twitter)

Instructions:

• Step 1: Please open the Word Prediction APP.

• Step 2: Type some words in the input box (e.g., “To be”).

• Step 3: Click the “Submit” button.

• Step 4: See the predicted next word below.

The Word Prediction APP

• provides customers with a real-time prediction of the next word with the highest probability,

• improves interactions with targeted consumers, and

• promotes engagement and enjoyment of users.

Limitations:

• The prediction algorithm processes a subsample that may not exactly reflect the whole situation.

• The data sets are restricted to the blogs, news, and twitter (in English).

Future Works:

• Extend the sample size, or

• Apply different data (e.g., papers in top journals).