Apple Newton Utilities Uživatelská příručka stáhnout pdf (Strana 400)

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CHAPTER 10

Recognition: Advanced Topics

10-24 Using Advanced Topics in Recognition

The wordInfo frame provides methods that you can use to manipulate its

contents; for more information, see “WordInfo Methods” (page 8-62) in Newton

Programmer’s Reference.

The alternate interpretations of a recognized word are provided as

wordInterp

frames based on the

protoWordInterp system prototype. An array of

wordInterp frames resides in the wordInfo frame’s words slot.

Each

wordInterp frame contains the following information:

■ a string that is one interpretation of the original input strokes.

■ a score indicating the recognizer’s conﬁdence in the accuracy of the interpretation.

■ the dictionary identiﬁer of the recognized word (for internal use only).

■ the position occupied by this word in the original list of interpretations returned

by the recognizer.

For more information, see the descriptions of the

protoCorrectInfo,

protoWordInterp, and protoWordInfo prototypes in Newton Programmer’s

Reference.

You can provide an optional

ViewCorrectionPopupScript method that

modiﬁes or replaces the picker that displays correction information when a word is

double-tapped. For a description of this method, see “Application-Deﬁned

Recognition Methods” (page 8-66) in Newton Programmer’s Reference.

Using Custom Dictionaries 10

In addition to the system-supplied dictionaries, your application can use custom

dictionaries to facilitate the recognition of specialized vocabulary such as medical

or legal terms. It’s relatively easy to create a RAM-based enumerated dictionary at

run time; however, this approach is not recommended for dictionaries containing

more than a few words.

Note that you cannot cause the built-in applications (Names, Dates and so on) to

use custom dictionaries. The only way to enable these applications to recognize

specialized terminology is to add words to the user dictionary. However, you are

strongly discouraged from doing so, because each entry added to the user dictionary

reduces the amount of system RAM available to the user. For more information,

see “System Dictionaries” beginning on page 9-11.

Creating a Custom Enumerated Dictionary 10

To create a custom enumerated dictionary, you must populate a blank RAM-based

dictionary with your dictionary items. Dictionary items can come from a number of

places: they might be elements of your own array of strings stored in the application’s

NTK project data; they might be represented as binary resource data in your

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