Question

Sometimes the recognition of complicated and rare words might not be sufficient, for example, additional spaces might be inserted into the resulting word.

Answer

The recognition of complicated and rare words might be improved by adding these words to the user dictionary.

Please refer to the following code snippet for setting up a user dictionary:

        //Create document processing parameters
        CSafePtr<IDocumentProcessingParams> DocumentProcessingParams;
        CheckResult(FREngine->CreateDocumentProcessingParams(&DocumentProcessingParams));

        CSafePtr<IPageProcessingParams> PageProcessingParams;
        CheckResult(DocumentProcessingParams->get_PageProcessingParams(&PageProcessingParams));

        CSafePtr<IRecognizerParams> RecognizerParams;
        CheckResult(PageProcessingParams->get_RecognizerParams(&RecognizerParams));

        CSafePtr<ILanguageDatabase> LanguageDatabase;
        CheckResult(FREngine->CreateLanguageDatabase(&LanguageDatabase));

        CSafePtr<ITextLanguage> TextLanguage;
        CheckResult(LanguageDatabase->CreateTextLanguage(&TextLanguage));
        CheckResult(LanguageDatabase->CreateCompoundTextLanguage(L"English,ChineseTaiwan", &TextLanguage));

        CSafePtr<IBaseLanguages> BaseLanguages;
        CheckResult(TextLanguage->get_BaseLanguages(&BaseLanguages));

        CSafePtr<IBaseLanguage> BaseLanguage;
        //English base language
        CheckResult(BaseLanguages->get_Element(1, &BaseLanguage));

	//Create user dictionary file
        CSafePtr<IDictionary> Dictionary;
        CheckResult(LanguageDatabase->CreateNewDictionary(L"Dictionary.amd", LI_EnglishUnitedStates, &Dictionary));

        CheckResult(Dictionary->put_Name(L"TestDictionary"));
        CheckResult(Dictionary->AddWord(L"Hematocrit", 100));

        CSafePtr<IDictionaryDescriptions> DictionaryDescriptions;
        CheckResult(BaseLanguage->get_DictionaryDescriptions(&DictionaryDescriptions));

        CSafePtr<IDictionaryDescription> DictionaryDescription;
        CheckResult(DictionaryDescriptions->AddNew(DT_UserDictionary, &DictionaryDescription));

        CSafePtr<IUserDictionaryDescription> UserDictionaryDescription;
        CheckResult(DictionaryDescription->GetAsUserDictionaryDescription(&UserDictionaryDescription));

	//Load user dictionary file
        CheckResult(UserDictionaryDescription->put_FileName(L"Dictionary.amd"));

        CheckResult(RecognizerParams->put_TextLanguage(TextLanguage));

        /////////////       

        WriteLineToLog(L"Processing...");
        CheckResult(frDocument->Process(DocumentProcessingParams));