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首頁AI 詞彙表Data Science什麼是 One-hot Encoding

AI 詞彙表

0-9
3D Reconstruction1-shot learning2-stage detector3D convolution4D data5G + AI6DoF pose estimation7D representation8-bit quantization9-layer network0-shot learning
A
A/B TestingAccountabilityAccuracyAcoustic ModelingActivation FunctionsActive LearningActor-Critic MethodsActuatorsAdaDeltaAdaGradAdam OptimizerAdjusted R-SquaredAdversarial AttacksAffordance LearningAgent-Based ModelingAgentic AI / Autonomous AgentsAgentic AI FrameworksAgglomerative ClusteringAI AcceleratorsAI Act (EU)AI AgentsAI AlignmentAI and BiasAI and SustainabilityAI APIsAI Art GenerationAI AssistantsAI AuditAI AuditingAI Bill of Rights (US Blueprint)AI ContainmentAI DemocratizationAI Ethics BoardsAI Ethics GuidelinesAI Feature StoreAI for Climate ChangeAI Generated ContentAI Governance FrameworksAI GuardrailsAI HallucinationsAI in Healthcare EthicsAI in WarfareAI LegislationAI LiteracyAI MarketplacesAI Model GovernanceAI Model HubAI Model RegistryAI Model WeightsAI Music GenerationAI OrchestrationAI PolicyAI RegulationsAI SafetyAI SecurityAI SingularityAI Transparency ReportAI WatermarkingAI WinterAI Workflow AutomationAI-as-a-ServiceAlan TuringAlgorithmic AccountabilityAlgorithmic Bias MitigationAlgorithmic DiscriminationAlgorithmic TransparencyAndrew NgAnomaly DetectionAnomaly Detection in SecurityAnthropicApache KafkaAPI DevelopmentAPI EndpointsApriori AlgorithmArtificial General Intelligence (AGI)Artificial Neural NetworksArtificial SuperintelligenceASICsAssociation Rule LearningAsynchronous Advantage Actor-CriticAttention MechanismsAUCAudio ClassificationAudio Signal ProcessingAugmented RealityAuthenticationAuthorizationAutoencodersAutomated ReasoningAutomatic Speech Recognition (ASR)AutomationAutoMLAutonomous NavigationAutoregressive ModelsAGI / Artificial General IntelligenceArtificial Intelligence (AI)AttentionAlgorithmAutoencoder
B
Bag-of-Words ModelBaggingBatch SizeBayesian InferenceBayesian NetworksBayesian OptimizationBias in AIBias-Variance TradeoffBig DataBig Data TechnologiesBiometric SecurityBLEU ScoreBlockchain in AIBox PlotByte-Pair Encoding (BPE)BERTBoostingBiasBackpropagationBatch Normalization
C
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D
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E
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F
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G
Game Playing AIGame TheoryGame Theory SimulationsGated Recurrent UnitsGaussian Mixture ModelsGeneral Data Protection Regulation (GDPR)Generative Adversarial NetworksGenerative ModelsGenetic AlgorithmsGensimGeoffrey HintonGlobal CooperationGPT ModelsGrad-CAMGradient Boosting MachinesGradient ClippingGraph Neural NetworksGraph TheoryGraphics Processing Units (GPUs)Grid SearchGAN / Generative Adversarial NetworkGroundingGraph Neural Network (GNN)Gradient DescentGenerative AI
H
HadoopHeatmapHelpHeuristic AlgorithmsHidden Markov ModelsHierarchical Reinforcement LearningHigh-Performance ComputingHIPAAHistogramHOGHPC ClustersHugging FaceHugging Face TransformersHuman RightsHuman-in-the-LoopHuman-Robot InteractionHyperparameter OptimizationHyperparameter TuningHeuristicHierarchical ModelHallucinationHyperparameterHidden Layer
I
Ilya SutskeverImage CaptioningImage ClassificationImage RecognitionImage SegmentationImpact on EmploymentIn-Context LearningIndustrial RobotsInferenceInference EnginesInference OptimizationInferential StatisticsInformation TheoryInformed ConsentInfrastructure as CodeInstance SegmentationIntellectual Property RightsIntelligent AgentsIntrusion Detection SystemsInverse Reinforcement LearningInstruction tuningImbalanced DataInstance / SampleIntelligence Amplification / AugmentationInterpretability
J
John McCarthyJoint Probability DistributionJuergen SchmidhuberJupyter NotebooksJAXJSONL / JSON-linesJuxtapositionJitteringJoint Embedding
K
K-Nearest NeighborsKai-Fu LeeKalman FiltersKerasKnowledge CutoffKnowledge GraphsKnowledge RepresentationKubernetesK-Shot LearningKernel TrickKL Divergence (Kullback–Leibler Divergence)K-means ClusteringKnowledge Distillation
L
L1 RegularizationL2 RegularizationLabel SmoothingLanguage ModelingLanguage ModelsLaplace TransformLarge Language Models (LLMs)Large Multimodal ModelsLatent Dirichlet AllocationLatent SpaceLaw of Large NumbersLayer NormalizationLearning CurveLearning Rate DecayLearning Rate SchedulingLemmatizationLIMELinear AlgebraLinear RegressionLog LossLogic ProgrammingLogistic RegressionLong Short-Term Memory NetworksLong-Context ModelsLoRA (Low-Rank Adaptation)LSTM / Long Short-Term MemoryLarge Language Model (LLM)Learning RateLoss FunctionLatent Variable
M
Machine ConsciousnessMachine TranslationMarkov Chain ModelsMarkov Chain Monte CarloMarkov Decision ProcessesMarkov ModelsMarvin MinskyMasked Language ModelsMaster Data ManagementMatplotlibMatrix DecompositionMCPMean Absolute ErrorMean Squared ErrorMechanistic InterpretabilityMel-Frequency Cepstral Coefficients (MFCCs)Metadata ManagementMicroservicesMidjourneyMind UploadingMini ToolMini-Batch Gradient DescentMixture of Experts (MoE)MLOpsMobile RobotsModel CardsModel CompressionModel DeploymentModel DriftModel Explainability ToolsModel MonitoringModel ServingModel StealingMomentum OptimizationMonitoring and LoggingMonte Carlo MethodsMonte Carlo SimulationsMoral MachinesMotion DetectionMotion PlanningMulti-Armed Bandit ProblemMultimodal AIMusic Information RetrievalMXNetMeta-learningMultimodal / MultimodalityMulti-head AttentionModelMachine Learning (ML)
N
n-GramsNaive Bayes AlgorithmNaive Bayes ClassifierNamed Entity RecognitionNatural Language Generation (NLG)Natural Language ProcessingNatural Language Processing (NLP)Natural Language UnderstandingNesterov Accelerated GradientNetwork SimulationsNeural Architecture SearchNeural NetworksNeural Processing Unit (NPU)Neuromorphic ComputingNick BostromNLTKNoise ReductionNoSQL DatabasesNumPyNVIDIA CUDANLU / Natural Language UnderstandingNovelty Detection / Anomaly DetectionNormalizationNeural NetworkNLP / Natural Language Processing
O
Object DetectionObject TrackingOntologiesOpenAIOpenAI GPTOptical Character RecognitionOptimization TheoryOut-of-Distribution (OOD) DataOne-hot EncodingOptimizerObjective FunctionOnline LearningOverfitting
P
PandasParallel ComputingParameter CountParameter-Efficient Fine-Tuning (PEFT)Part-of-Speech TaggingPartial Dependence PlotsPath PlanningPattern RecognitionPeople also viewedPerception in AIPerceptronPerplexityPeter NorvigPhilosophy of MindPhoneticsPipelinesPlanning and SchedulingPlotlyPolicy GradientsPolicy OptimizationPose EstimationPositional EncodingPragmaticsPrecisionPredictive ModelingPredictive ProbabilityPreference TuningPrincipal Component AnalysisPrivacyPrivacy-Preserving Machine LearningProbability Density FunctionsProbability TheoryProblem SolvingProcess ModelingProcess-Based SupervisionPrompt ChainingPrompt EngineeringPrompt InjectionPrompt MarketplacePrompt TemplatesPropositional LogicProximal Policy OptimizationPruningPyTorchPromptPoolingParameterPolicy / Reinforcement Learning PolicyPretraining
Q
QLoRA (Quantized Low-Rank Adaptation)Quantum ComputingQuantum Machine LearningQuestion AnsweringQuestion Answering SystemsQ-learningQuality EstimationQueryQuantizationQueue / Buffer
R
R-SquaredRandom ForestsRandom SearchRay KurzweilReal AnalysisReasoning EnginesRecallRecommender SystemsRecurrent Neural NetworksRed TeamingRegressionRegression AnalysisRegulatory ComplianceReinforcement Learning from Human FeedbackReinforcement Learning in RoboticsReproducibilityResponsible AIRetrieval-Augmented GenerationReward FunctionRMSpropRobot KinematicsRobot VisionRobotic ManipulationRobotic Operating System (ROS)Robotics TransformersRobustness in AI ModelsROC CurveRodney BrooksRoot Mean Squared ErrorRule-Based SystemsRNN / Recurrent Neural NetworkReinforcement Learning (RL)Retrieval Augmented Generation (RAG)RegularizationRepresentation Learning
S
Saliency MapsSARSA AlgorithmScalable OversightScaling LawsScatter PlotScikit-LearnSciPySeabornSearch AlgorithmsSecure HardwareSecure Multi-Party ComputationSecure ProtocolsSelf-AttentionSelf-Driving CarsSemantic NetworksSemantic ParsingSemantic Role LabelingSemantic SegmentationSemantic WebSemi-Supervised LearningSensorsSentencePieceSentiment AnalysisSequence LabelingServerless ComputingServerless GPUsSet TheorySHAP ValuesSiamese NetworksSIFTSilhouette ScoreSimulated AnnealingSimulation HypothesisSimulation-to-Real Transfer (Sim2Real)Simultaneous Localization and Mapping (SLAM)SMOTESocial Acceptance of AISocial SimulationSOTA (State of the Art)spaCySparkSpeaker DiarizationSpectrogram AnalysisSpeech EnhancementSpeech RecognitionSpeech SynthesisSpiking Neural NetworksSQLStable DiffusionStackingState-Action PairsStatistical AnalysisStatistical DistributionsStatisticsStemmingStochastic Gradient DescentStochastic ModelingStochastic ProcessesStop WordsStream ProcessingStrong AIStrong vs. Weak AIStuart RussellStyle TransferSubword TokenizationSupport Vector MachinesSURFSurveillanceSwarm IntelligenceSymbolic AISynthetic Data GenerationSynthetic MediaSystem DynamicsSystem PromptSoftmaxSamplingSequence ModelingSupervised LearningSelf-Supervised Learning
T
t-SNETeacher ForcingTechnological SingularityTeleoperationTemperatureTemporal Difference LearningTensor Processing Units (TPUs)TensorFlowTesting and ValidationText SummarizationText-to-Audio GenerationText-to-Image GenerationText-to-Speech (TTS)Text-to-Video GenerationTF-IDFTheanoTime Series AnalysisTimnit GebruTinyMLToken LimitTokenizationTokensTool Use (LLMs)Topic ModelingTopologyTransformer ModelsTransformer NetworksTransparencyTransparency RequirementsTrust Region Policy OptimizationTrustworthy AITruthfulness (in LLMs)Turing TestTokenizerTransformerTraining DataTuning / Hyperparameter TuningTransfer Learning
U
UMAPUnmanned Aerial Vehicles (UAVs)Unmanned Ground VehiclesU-NetUncertainty EstimationUnderfittingUnsupervised LearningUniversal Approximation Theorem
V
Validation CurveValue FunctionVector DatabaseVersion Control for ModelsVibe code an AI ToolVideo Generation ModelsVirtual Reality SimulationsVoice BiometricsVoice CloningVoice ConversionVision Transformer (ViT)Vector EmbeddingVanishing / Exploding GradientVariational Autoencoder (VAE)Validation Set
W
Warmup StepsWeak AIWord EmbeddingsWord Sense DisambiguationWordPieceWorld ModelsWeight DecayWorkflowWeak SupervisionWhitening / Whitening TransformationWord Embedding
X
X-axis / feature axisXLMXLNetXAI / Explainable AIXOR problem
Y
YAGNI (You Aren't Gonna Need It)Yann LeCunYoshua BengioYoga of AIY-transform / YUVY-axis / feature axisYield (model yield / throughput)
Z
Zero Trust ArchitectureZ-score NormalizationZygosity in augmentationZero-centric / Zero-bias initializationZero-gradient phenomenonZero-shot Learning / Zero-shot inference

什麼是 One-hot Encoding

Data Science
[wˌʌt ɪz wˈʌnhˈɑːt ɛŋkˈoʊdɪŋ]
最後更新: October 15, 2025

One-hot Encoding 是一種常用的特徵表示方法,主要用於將分類數據轉換為計算機能夠理解的形式。在機器學習和數據挖掘中,數據的有效表示是模型成功的關鍵。One-hot Encoding 的基本思想是將每個類別值轉換為一個二進制向量,這種向量在類別項對應的位置上標記為1,而在其他位置標記為0。


這種方法的優點在於它能夠消除類別之間的順序關係,使模型能夠獨立處理每個類別。例如,考慮一個包含動物類別的數據集,如“貓”、“狗”和“鳥”。通過 One-hot Encoding,這些類別將被表示為三維數組:[1, 0, 0]、[0, 1, 0] 和 [0, 0, 1]。這種表示方式有助於提高模型的學習效果,尤其是在深度學習中。


儘管 One-hot Encoding 在許多場景中表現良好,但它也存在一些缺點。例如,當類別數量較多時,會導致稀疏矩陣的生成,從而增加計算複雜度和內存佔用。此外,One-hot Encoding 無法捕捉類別之間的關係,這在某些情況下可能影響模型性能。為了解決這些問題,研究人員提出了一些替代方法,如目標編碼(Target Encoding)和詞嵌入(Word Embedding)等。


未來的趨勢是結合使用 One-hot Encoding 和其他編碼方式,以便在保持有效性的同時,減少計算資源的消耗和模型的複雜性。總的來說,One-hot Encoding 是機器學習中處理分類數據的基礎技術,理解其原理和應用場景對於數據科學家至關重要。

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