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Apple は、タガーを使用して Swift で名前付きエンティティを識別するための を提供していますが、Objective-C には提供していません。

彼らが提供するSwiftの例は次のとおりです。

let text = "The American Red Cross was established in Washington, D.C., by Clara Barton."
let tagger = NSLinguisticTagger(tagSchemes: [.nameType], options: 0)
tagger.string = text
let range = NSRange(location:0, length: text.utf16.count)
let options: NSLinguisticTagger.Options = [.omitPunctuation, .omitWhitespace, .joinNames]
let tags: [NSLinguisticTag] = [.personalName, .placeName, .organizationName]
tagger.enumerateTags(in: range, unit: .word, scheme: .nameType, options: options) { tag, tokenRange, stop in
    if let tag = tag, tags.contains(tag) {
        let name = (text as NSString).substring(with: tokenRange)
        print("\(name): \(tag)")
    }
}

here の助けを借りてここまで翻訳しましたが、タグを指定する方法がわかりません。

NSLinguisticTagger *tagger = [[NSLinguisticTagger alloc]
                              initWithTagSchemes:[NSArray arrayWithObjects:NSLinguisticTagSchemeNameType, nil]
                              options:(NSLinguisticTaggerOmitWhitespace | NSLinguisticTaggerOmitPunctuation | NSLinguisticTaggerJoinNames)];
[tagger setString:text];

[tagger enumerateTagsInRange:NSMakeRange(0, [text length])
                      scheme:NSLinguisticTagSchemeNameType
                     options:(NSLinguisticTaggerOmitWhitespace | NSLinguisticTaggerOmitPunctuation| NSLinguisticTaggerJoinNames)
                  usingBlock:^(NSString *tag, NSRange tokenRange, NSRange sentenceRange, BOOL *stop) {
                      NSString *token = [text substringWithRange:tokenRange];
                      NSString *name =[tagger tagAtIndex:tokenRange.location scheme:NSLinguisticTagSchemeNameType tokenRange:NULL sentenceRange:NULL];

                      if (name == nil) {
                          name = token;
                      }

                      NSLog(@"tagger results:%@, %@", token, name);
                  }];

Objective-C でタグを指定する方法についてご提案いただきありがとうございます。

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元の Swift コード:

let text = "The American Red Cross was established in Washington, D.C., by Clara Barton."
let tagger = NSLinguisticTagger(tagSchemes: [.nameType], options: 0)
tagger.string = text
let range = NSRange(location:0, length: text.utf16.count)
let options: NSLinguisticTagger.Options = [.omitPunctuation, .omitWhitespace, .joinNames]
let tags: [NSLinguisticTag] = [.personalName, .placeName, .organizationName]
tagger.enumerateTags(in: range, unit: .word, scheme: .nameType, options: options) { tag, tokenRange, stop in
    if let tag = tag, tags.contains(tag) {
        let name = (text as NSString).substring(with: tokenRange)
        print("\(name): \(tag)")
    }
}

出力：

American Red Cross: NSLinguisticTag(_rawValue: OrganizationName)
Washington: NSLinguisticTag(_rawValue: PlaceName)
Clara Barton: NSLinguisticTag(_rawValue: PersonalName)

Objective-C バージョン:

NSString* text = @"The American Red Cross was established in Washington, D.C., by Clara Barton.";
NSLinguisticTagger* tagger = [[NSLinguisticTagger alloc] initWithTagSchemes:@[NSLinguisticTagSchemeNameType] options:0];
tagger.string = text;
NSRange range = NSMakeRange(0, text.length);
NSLinguisticTaggerOptions options = NSLinguisticTaggerOmitPunctuation | NSLinguisticTaggerOmitWhitespace | NSLinguisticTaggerJoinNames;
NSArray* tags = @[NSLinguisticTagPersonalName, NSLinguisticTagPlaceName, NSLinguisticTagOrganizationName];
[tagger enumerateTagsInRange:range unit:NSLinguisticTaggerUnitWord scheme:NSLinguisticTagSchemeNameType options:options usingBlock:^(NSLinguisticTag  _Nullable tag, NSRange tokenRange, BOOL * _Nonnull stop) {
    if ([tags containsObject:tag]) {
        NSString* name = [text substringWithRange:tokenRange];
        NSLog(@"%@: %@", name, tag);
    }
}];

出力：

2018-09-12 09:51:00.323378-0700 App[2408:109005] American Red Cross: OrganizationName
2018-09-12 09:51:00.323755-0700 App[2408:109005] Washington: PlaceName
2018-09-12 09:51:00.323901-0700 App[2408:109005] Clara Barton: PersonalName
于 2018-09-12T16:51:57.680 に答える