{"id":3929,"date":"2021-10-19T17:49:25","date_gmt":"2021-10-19T09:49:25","guid":{"rendered":"http:\/\/123.57.164.21\/?p=3929"},"modified":"2021-10-19T17:49:25","modified_gmt":"2021-10-19T09:49:25","slug":"swiftui%e4%b9%8b%e5%a3%b0%e9%9f%b3%e8%af%86%e5%88%ab%ef%bc%88machinelearning%ef%bc%89","status":"publish","type":"post","link":"https:\/\/92it.top\/?p=3929","title":{"rendered":"SwiftUI\u4e4b\u58f0\u97f3\u8bc6\u522b\uff08MachineLearning\uff09"},"content":{"rendered":"\n

SwiftUI\u4e4b\u58f0\u97f3\u8bc6\u522b
\u914d\u5408MachineLearning\u529f\u80fd\uff0c\u5224\u65ad\u8bf4\u8bdd\u7684\u4eba\u662f\u7537\u6027\u8fd8\u662f\u5973\u6027\u3002\u9700\u8981\u5b9e\u73b0\u8fd9\u4e2a\u529f\u80fd\uff0c\u9996\u5148\u9700\u8981\u6709MachineLearning\u6a21\u5757\uff0c\u5373\u5df2\u7ecf\u8bad\u7ec3\u8fc7\u7684\u6570\u636e\u3002
\u82f9\u679c\u81ea\u5e26\u4e86CreateML\u5de5\u5177\uff0c\u53ef\u4ee5\u81ea\u5df1\u8bad\u7ec3\u56fe\u7247\uff0c\u6587\u5b57\uff0c\u58f0\u97f3\uff0c\u751a\u81f3\u56fe\u8868\uff0c\u5173\u952e\u5728\u4e8e\u6536\u96c6\u683c\u5f0f\u5408\u9002\u4ee5\u53ca\u6570\u91cf\u53ef\u89c2\u7684\u6570\u636e\u3002<\/p>\n\n\n\n

\"\"<\/figure><\/div>\n\n\n\n

\u4e0a\u56fe\u662f\u8bad\u7ec3\u97f3\u9891\u7684\u8f6f\u4ef6\uff0c\u4f7f\u7528\u65b9\u6cd5\u5f88\u7b80\u5355\uff0c\u7c7b\u4f3c\u4e8e\u6587\u672c\u8bad\u7ec3\uff0c\u901a\u8fc7\u6587\u4ef6\u5939\u533a\u5206\u7537\u5973\u58f0\uff0c\u7136\u540e\u5728\u6587\u4ef6\u5939\u4e0b\u653e\u7f6e\u641c\u96c6\u7684\u7537\u5973\u58f0\u97f3\u9891\u6587\u4ef6\uff0c\u4e3a\u4e86\u51c6\u786e\u6027\uff0c\u53ef\u4ee5\u5c06\u6587\u4ef6\u5206\u7c7b\u4e3a\u8bad\u7ec3\u7528\uff0c\u6821\u9a8c\u7528\uff0c\u4ee5\u53ca\u6d4b\u8bd5\u7528\u3002\u5373\u5206\u6210\u5404\u79cd\u6587\u4ef6\u5939\uff0c\u800c\u97f3\u9891\u6587\u4ef6\u8d8a\u591a\u8d8a\u597d\u3002<\/p>\n\n\n\n

\"\"<\/figure><\/div>\n\n\n\n
\"\"<\/figure><\/div>\n\n\n\n
\"\"<\/figure><\/div>\n\n\n\n

\u7136\u540e\u5c06\u6587\u4ef6\u8def\u5f84\u653e\u5230\u8bad\u7ec3\u5de5\u5177CreateML\u4e2d<\/p>\n\n\n\n

\"\"<\/figure><\/div>\n\n\n\n

\u70b9\u51fb\u25b6\ufe0f\uff0c\u8bad\u7ec3\u5373\u53ef\u3002\u8bad\u7ec3\u540e\u7684\u6a21\u5757\u51c6\u786e\u6027\u8ddf\u5f88\u591a\u4e1c\u897f\u6709\u5173\uff0c\u7528\u4e8e\u8bad\u7ec3\u7684\u6587\u4ef6\u8d8a\u591a\u81ea\u7136\u8d8a\u597d\u3002<\/p>\n\n\n\n

\"\"<\/figure><\/div>\n\n\n\n

\u4eceOutput\u4e2d\u76f4\u63a5\u62d6\u51fa\u8bad\u7ec3\u597d\u7684\u6a21\u5757\uff0c\u5373\u53ef\u653e\u5165\u5de5\u7a0b\u4e2d\u3002
\u4ee5\u4e0a\u53ea\u662f\u7b80\u5355\u4ecb\u7ecd\u5236\u4f5c\u65b9\u6cd5\u3002
\u5f53\u6a21\u5757\u62d6\u5230\u5de5\u7a0b\u540e\uff0c\u5982\u56fe<\/p>\n\n\n\n

\"\"<\/figure><\/div>\n\n\n\n

Inputs\u4e3a\u6211\u4eec\u9700\u8981\u8f93\u5165\u6a21\u5757\u7684\u5185\u5bb9\uff0c\u5373\u97f3\u9891\u6837\u672c\uff08audioSamples\uff09,\u800c\u6a21\u5757\u4f1a\u8f93\u51fa\u8be5\u6837\u672c\u6700\u53ef\u80fd\u7684\u5206\u7c7b\u53ca\u53ef\u80fd\u6027\u6bd4\u4f8b\u3002<\/p>\n\n\n\n

\u56e0\u4e3a\u9700\u8981\u7528\u5230\u97f3\u9891\u83b7\u53d6\u4ee5\u53ca\u58f0\u97f3\u5206\u6790\uff0c\u6240\u4ee5\u9996\u5148
<\/p>\n\n\n\n

\"\"<\/figure><\/div>\n\n\n\n

\u5b9a\u4e49\u4e00\u4e2aObservableObject\u7c7b\u578b\u53d8\u91cf<\/p>\n\n\n\n

class testMessage: ObservableObject{\n    @Published var message = \"Nothing\"\n}\n<\/pre>\n\n\n\n
\u56e0\u4e3a\u9700\u8981\u5728\u4e0d\u540c\u7684\u89c6\u56fe\u5185\u4f20\u9012\u6570\u636e\uff0c\u4f7f\u7528\u4e86protocol\u4ee5\u53canotification\u4e24\u79cd\u65b9\u5f0f\u4f20\u9012\u6570\u636e
\u5728contentView\u4e2d\u6dfb\u52a0\u4ee5\u4e0b\u53d8\u91cf<\/p>\n\n\n\n
\/\/\u53e6\u4e00\u79cd\u6570\u636e\u4f20\u9012\u65b9\u5f0f\u6d4b\u8bd5\u7528\n@State  var message = \"Nothing\"\n    \n    @ObservedObject var myMessage = testMessage()\n    \/\/AVEngine\n    private let audioEngine = AVAudioEngine()\n    \/\/\u58f0\u97f3\u8bc6\u522b\u6a21\u5757\n    private var soundClassifier = MySoundClassifier 1()\n\n    var inputFormat: AVAudioFormat!\n    var analyzer: SNAudioStreamAnalyzer!\n    var resultsObserver = ResultsObserver()\n    let analysisQueue = DispatchQueue(label: \"dongdong\")\n<\/pre>\n\n\n\n
\u521d\u59cb\u5316\u51fd\u6570<\/p>\n\n\n\n
init(){\n        \n        resultsObserver.delegate = self\n        inputFormat = audioEngine.inputNode.inputFormat(forBus: 0)\n        analyzer = SNAudioStreamAnalyzer(format: inputFormat)\n    }\n<\/pre>\n\n\n\n
\u542f\u52a8audio\u51fd\u6570<\/p>\n\n\n\n
func startAudioEngine() {\n        do {\n            let request = try SNClassifySoundRequest(mlModel: soundClassifier.model)\n            try analyzer.add(request, withObserver: resultsObserver)\n        } catch {\n            print(\"Unable to prepare request: \\(error.localizedDescription)\")\n            return\n        }\n       \n        audioEngine.inputNode.installTap(onBus: 0, bufferSize: 8192, format: inputFormat) { buffer, time in\n                self.analysisQueue.async {\n                    self.analyzer.analyze(buffer, atAudioFramePosition: time.sampleTime)\n                }\n        }\n        \n        do{\n        try audioEngine.start()\n        }catch( _){\n            print(\"error in starting the Audio Engin\")\n        }\n    }\n<\/pre>\n\n\n\n
\u5b9a\u4e49procotol\u51fd\u6570\u5185\u5bb9<\/p>\n\n\n\n
\u6570\u636e\u4f20\u9012<\/p>\n\n\n\n
func displayPredictionResult(identifier: String, confidence: Double) {\n        DispatchQueue.main.async {\n            \n        \/\/self.myMessage.message = (\"Recognition: \\(identifier)\\nConfidence \\(confidence)\")\n            self.myMessage.message = self.translateString(identifier: identifier)\n            \/\/print(self.myMessage.message)\n        }\n        \n        \n    }\n<\/pre>\n\n\n\n
\u56e0\u4e3a\u6a21\u5757\u8f93\u51fa\u7684\u5185\u5bb9\u6bd4\u8f83\u5355\u4e00\u4e14\u8bad\u7ec3\u7684\u65f6\u5019\u662f\u82f1\u6587\u5206\u7c7b\uff0c\u6240\u4ee5\u505a\u4e2a\u7b80\u5355\u7684\u5904\u7406<\/p>\n\n\n\n
func translateString(identifier: String) -> String{\n        \n        switch identifier{\n        case \"male\":\n            return \"\u7537\u751f\u26f9\ufe0f\ud83d\udc71\ud83c\udffc\u200d\u2642\ufe0f\"\n        default:\n            return \"\u5973\u751f\ud83d\udc69\ud83c\udffb\u200d\ud83e\uddb3\ud83d\udc84\"\n        }\n    }\n<\/pre>\n\n\n\n
\u5728ContentView\u7684\u6240\u6709\u5b9a\u4e49\u4e4b\u5916\uff0c\u5b9a\u4e49\u7c7b\uff0c\u53c2\u8003\u82f9\u679c\u5b98\u7f51\u5bf9\u4e8esound\u4ecb\u7ecd<\/p>\n\n\n\n
\"\"<\/figure><\/div>\n\n\n\n
class ResultsObserver: NSObject, SNResultsObserving {
var delegate: GenderClassifierDelegate?
func request(_ request: SNRequest, didProduce result: SNResult) {
guard let result = result as? SNClassificationResult,
let classification = result.classifications.first else { return }<\/p>\n\n\n\n
class ResultsObserver: NSObject, SNResultsObserving {\n    var delegate: GenderClassifierDelegate?\n    func request(_ request: SNRequest, didProduce result: SNResult) {\n        guard let result = result as? SNClassificationResult,\n            let classification = result.classifications.first else { return }\n        \n        \/\/ Determine the time of this result.\n        let formattedTime = String(format: \"%.2f\", result.timeRange.start.seconds)\n        print(\"Analysis result for audio at time: \\(formattedTime)\")\n        \n        let confidence = classification.confidence * 100.0\n        \n       \n            delegate?.displayPredictionResult(identifier: classification.identifier, confidence: confidence)\n        \n       \n        \/\/\u4f7f\u7528\u901a\u77e5\u4f20\u9012\u6570\u636e\uff0c\u4f46\u662f\u6570\u636e\u53ea\u80fd\u4e3a[Hasable:Any?]\u683c\u5f0f\n        \/\/\u5fc5\u987bDispathcqueue\n        DispatchQueue.main.async {\n            NotificationCenter.default.post(name: NSNotification.Name(\"ForMyTest\"), object: nil,userInfo: [\"\u6027\u522b\": classification.identifier,\"\u6982\u7387\":String(confidence)])\n        }\n    }\n}\n<\/pre>\n\n\n\n
\u4ee5\u4e0a\u4ee3\u7801\u57fa\u672c\u548c\u82f9\u679c\u5b98\u7f51\u4e00\u81f4\uff0c\u4e0d\u540c\u4e4b\u5904\u6709\u534f\u8bae\u65b9\u5f0f\u4f20\u9012\u6570\u636e<\/p>\n\n\n\n
delegate?.displayPredictionResult(identifier: classification.identifier, confidence: confidence)\n<\/pre>\n\n\n\n
\u7136\u540e\u6d4b\u8bd5\u901a\u8fc7\u540c\u5fd7\u4f20\u9012\u6570\u636e\u7528\u4e8e\u6d4b\u8bd5\u5185\u5bb9<\/p>\n\n\n\n
DispatchQueue.main.async {\n            NotificationCenter.default.post(name: NSNotification.Name(\"ForMyTest\"), object: nil,userInfo: [\"\u6027\u522b\": classification.identifier,\"\u6982\u7387\":String(confidence)])\n        }\n<\/pre>\n\n\n\n
\u7136\u540e\u52a0\u5165\u534f\u8bae\uff0c\u6240\u6709\u5185\u5bb9\u4e4b\u5916\u9762<\/p>\n\n\n\n
protocol GenderClassifierDelegate {\n    func displayPredictionResult(identifier: String, confidence: Double)\n}\n<\/pre>\n\n\n\n
\u7ec8\u4e8e\u8fdb\u5165body\u90e8\u5206
\u7b80\u5355\u7684\u4ee3\u7801\uff0c\u89c1\u6ce8\u91ca<\/p>\n\n\n\n
var body: some View {\n        Text(myMessage.message)\n            .onAppear{\n                self.startAudioEngine()\n        }\n        .onTapGesture {\n            self.message = \"what\"\n        }\n            \/\/\u6b64\u5904\u63a5\u53d7\u901a\u77e5\uff0c\u5904\u7406\u6570\u636e\uff0c\u6b64\u65f6@state message\u4e5f\u80fd\u66f4\u6539\u4e86\n            \/\/\u5f53\u6709\u901a\u77e5\u5185\u5bb9\u4f20\u9012\u8fc7\u6765\u540e\uff0c\u5904\u7406\u7c7b\u5bb9\uff0c\u6253\u5370\u51fa\u7ed3\u679c.\n        .onReceive(NotificationCenter.default.publisher(for: Notification.Name(\"ForMyTest\"))){\n            label in\n            \/\/print(label)\n            if let new = label.userInfo as? [String:String]\n            {\n                self.message = new[\"\u6027\u522b\"]!\n                print(self.message)\n                \n            }\n        }\n    }\n<\/pre>\n\n\n\n
\u901a\u77e5\u4f20\u9012\u6570\u636e\u65b9\u5f0f\u76f8\u5bf9\u6b65\u9aa4\u5c11\u4e00\u4e9b\uff0c\u6b64\u5904\u6ca1\u6709\u73b0\u5b9e\u51fa\u6765\uff0c\u53ea\u662f\u6253\u5370\u4e86\u4e00\u4e0b\uff0c\u4e0eprotocol\u65b9\u5f0f\u7ed3\u679c\u5b8c\u5168\u4e00\u81f4\uff0c\u65e0\u95ee\u9898\uff0c\u53ef\u53c2\u8003\u5907\u7528.
\u7136\u540e\u8fd0\u884c\u7a0b\u5e8f\uff0c\u7136\u540e\u7a0b\u5e8f\u5c31\u6302\u4e86
\u56e0\u4e3a\u8fd8\u6ca1\u6709\u5f00\u9ea6\u514b\u98ce\u6743\u9650\uff0c\u5982\u56fe\uff0cinfo.list\u4e2d<\/p>\n\n\n\n
\"\"<\/figure><\/div>\n\n\n\n
\u7136\u540e\u518d\u8fd0\u884c
\u8bc6\u522b\u51fa\u58f0\u97f3\u7c7b\u578b<\/p>\n\n\n\n
\"\"<\/figure><\/div>\n\n\n\n
\u975e\u5e38\u7b80\u5355\u7684\u4f7f\u7528\u5230\u4e86ML\u7684\u5c0f\u7a0b\u5e8f\uff0c\u82f9\u679c\u81ea\u5e26\u7684CreateML\u529f\u80fd\u8fd8\u662f\u5f88\u5f3a\u5927\u7684\uff0c\u652f\u6301\u5f88\u591a\u7c7b\u578b\uff0c\u5982<\/p>\n\n\n\n
\"\"<\/figure><\/div>\n\n\n\n
\u4f46\u662f\u5728\u8bad\u7ec3\u6a21\u5757\u65f6\uff0c\u771f\u6b63\u6df1\u5165ML\u65f6\uff0cCreateML\u5219\u611f\u89c9\u529f\u80fd\u6709\u4e9b\u4e0d\u591f\u4e86\uff0c\u8fd9\u65f6\u5019\u8fd8\u662f\u7684\u7528Python\u4e86\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
SwiftUI\u4e4b\u58f0\u97f3\u8bc6\u522b\u914d\u5408MachineLearning\u529f\u80fd\uff0c\u5224\u65ad\u8bf4\u8bdd\u7684\u4eba\u662f\u7537\u6027\u8fd8\u662f\u5973\u6027\u3002\u9700\u8981\u5b9e\u73b0\u8fd9\u4e2a\u529f\u80fd\uff0c […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[6,5],"tags":[],"_links":{"self":[{"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/posts\/3929"}],"collection":[{"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/92it.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=3929"}],"version-history":[{"count":2,"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/posts\/3929\/revisions"}],"predecessor-version":[{"id":3943,"href":"https:\/\/92it.top\/index.php?rest_route=\/wp\/v2\/posts\/3929\/revisions\/3943"}],"wp:attachment":[{"href":"https:\/\/92it.top\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=3929"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/92it.top\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=3929"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/92it.top\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=3929"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}