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What is Prediction

Aurora Prediction is designed to help two groups of people, people with Learning Disabilities and Dyslexia, and people needing Augmentative Communication.

Aurora Suite's Prediction system is designed to speed typing input and improve spelling and grammar in programs for the Microsoft Windows operating environment.

Word Guessing

Prediction Demo Hello

Aurora Prediction attempts to guess what word you are typing as you type it. If you press H for example, you will see a list of words that start with the letter H in the window like: he, his, had, her, have, him etc. Pressing E will then cause Prediction to offer you a list of words starting with HE. Pressing L will give a list of words that start with HEL. If you were typing "helpless" and you saw it appear in the prediction window, you could then either type the number next to it in the prediction window or click on it with the mouse to have Prediction complete the word for you. So for four keystrokes "HEL4" you get nine keystrokes output, eight for "helpless" plus a trailing space. You've doubled your typing speed.

Grammatical rules and Phonetic Spelling are used to help increase the chance that the word you are typing will appear in the prediction window.

Word Prediction

To improve keystroke savings even more, Aurora Prediction attempts to predict what word will follow the word you have just typed, so after the "helped" example above, you would see words that have been seen to follow "helped" before, the most likely one being "the". In this case, you type 1 to select "the" for a savings of 3 keystrokes. Much better than you can get with guessing alone.

Multiple-Word Prediction

Once you have typed "helped the" a few times using the technique above, you may notice that the phrase "helped the" appears in the prediction window after you have typed "hel". You can then pick the phrase for a savings of 8 keystrokes. Three better than you can get with the word guessing/prediction combination.

As you use Multiple-Word Prediction you can build even longer phrases like "Hello there how are you" for savings of 20 characters or more, plus you don't need to preprogram macros and remember all those codes.

It Learns Your Writing Style

As you use Aurora Prediction, it learns your personal writing style, so the more you use it, the more effective word guessing, prediction and multiple-word prediction will get.


After you press a punctuation character (period, exclamation, question, semicolon, comma) Aurora Prediction automatically inserts the appropriate number of spaces after that punctuation character.

Tip: If you don't need the spaces, you should go back with the left arrow key rather than the backspace because backspace will delete both the space and the punctuation character.


After a terminating punctuation character (period, exclamation, question), Aurora Prediction will automatically set the shift key so that the first character of the next sentence or paragraph will automatically be capitalized.

Tip: If you don't want that character to be capitalized, you should type it, then go back with the left arrow key and type over top of it with the desired lower case letter.


You may have noticed that after words and punctuation that Aurora Prediction automatically puts the appropriate number of spaces after the word or punctuation character for you. This is called AutoSpacing.

Tip: If you don't need the spaces, you should go back with the left arrow key rather than the backspace because backspace will delete both the space and the punctuation character.


In Aurora Prediction, the backspace key is more of an undo key than a simple backspace. It remembers the last twenty keystrokes and can undo any changes that Aurora Prediction has made to the typed results in your application.

Tip: Pressing any arrow key, delete, PgUp or PgDn will cause AutoBackspace to forget its backspacing information, returning it to regular backspace operation.


Aurora Prediction also supports preprogrammed text and speech macros that can be used for Logical Letter Coding schemes and are automatically expanded when you hit the expand character. This character defaults to a space, but can easily be changed to any other character using the ExpandCharacter= setting in the AURORA.SET.

There are two types of macros, text and speech. Text macros are typed into the application you typed the macro code into. Speech macros are spoken. After a macro is autoexpanded, the macro code is erased out of the window where you typed it. Text macros are automatically followed by a space. Text macros can be unexpanded by pressing the backspace key, backspacing after a speech macro will return the macro code to the screen.

Word Endings and Suffixes

This is one thing that Aurora Prediction doesn't do since this feature was originally designed to compensate for limited dictionary capacity. With Aurora Prediction's million word capacity dictionary, it can easily contain all variations of words (park, Parker, parking, parked, parks, park's etc.) without the added cognitive difficulty of managing suffixes.

And More...

We recommend you read through the following sections to find more about Aurora Prediction.

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Copyright (C) 2006 Aurora Systems, Inc. All Rights Reserved.