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홈AI 용어집AI FundamentalsZ-score 정규화란?

AI 용어집

0-9
1-shot learning2-stage detector3D convolution3D Reconstruction4D data5G + AI6DoF pose estimation7D representation8-bit quantization9-layer network0-shot learning
A
AlgorithmAutoencoderArtificial Intelligence (AI)AttentionA/B TestingAccountabilityAccuracyAcoustic ModelingActivation FunctionsActive LearningActor-Critic MethodsActuatorsAdaDeltaAdaGradAdam OptimizerAdjusted R-SquaredAdversarial AttacksAffordance LearningAgent-Based ModelingAgentic AI / Autonomous AgentsAgentic AI FrameworksAgglomerative ClusteringAGI / Artificial General IntelligenceAI 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 Models
B
Batch NormalizationBoostingBackpropagationBiasBag-of-Words ModelBaggingBatch SizeBayesian InferenceBayesian NetworksBayesian OptimizationBERTBias in AIBias-Variance TradeoffBig DataBig Data TechnologiesBiometric SecurityBLEU ScoreBlockchain in AIBox PlotByte-Pair Encoding (BPE)
C
Classifier / ClassificationChatbotCross-ValidationClusteringCaffeCalculusCalibrationCalifornia Consumer Privacy Act (CCPA)Canary DeploymentCapsule NetworksCarbon Footprint of AICase-Based ReasoningCatastrophic ForgettingCentral Limit TheoremChain-of-ThoughtChinese Room ArgumentClass ImbalanceClassificationCloud AI PlatformsCloud ComputingClustering AlgorithmsCNN / Convolutional Neural NetworkCode Generation ModelsCognitive ArchitecturesCognitive ComputingCohereColab NotebooksCollaborative FilteringColor SpacesComplex AnalysisComplianceCompliance Standards (ISO IEEE)Computational ComplexityComputational Fluid DynamicsComputational Theory of MindCompute-Optimal ModelsConcept DriftConceptual GraphsConditional ProbabilityConfusion MatrixConsciousness in AIConsistency ModelsConstitutional AIConstraint Satisfaction ProblemsContainerizationContent-Based FilteringContext WindowContinual LearningContinuous Integration/Continuous Deployment (CI/CD)Control SystemsConversational AIConvolutional Neural NetworksCOPPACoreference ResolutionCorrelationCorrelation MatrixCost-Sensitive LearningCross-Entropy LossCurriculum LearningCyber Threat IntelligenceCybersecurity Regulations
D
Deterministic ModelData AugmentationDeep LearningDiscriminative ModelDALL·EData AnnotationData CatalogData CentersData CleaningData DriftData GovernanceData IngestionData IntegrationData LabelingData LakeData LakesData LeakageData LineageData MiningData PipelineData PoisoningData PreprocessingData PrivacyData ProtectionData Protection LawsData QualityData SecurityData SovereigntyData TransformationData VersioningData VisualizationData Visualization TechniquesData WarehousingDatabases for AIDavies-Bouldin IndexDBSCANDecision Boundary VisualizationDecision TreesDeep Belief NetworksDeep Q-NetworksDeep Reinforcement LearningDeepfakeDeepfakesDeepMindDemis HassabisDependency ParsingDepth EstimationDescriptive StatisticsDialogue SystemsDifferential EquationsDifferential EvolutionDifferential PrivacyDiffusion ModelsDigital DivideDigital ProvenanceDigital TwinsDimensionality ReductionDirect Preference Optimization (DPO)Discourse AnalysisDiscrete Event SimulationDiscrete MathematicsDisinformationDistributed ComputingDistributed File SystemsDistributed TrainingDockerDronesDropoutDropout RegularizationDynamical Systems
E
Explainable AI (XAI)Ensemble LearningEncoderEmbeddingEarly StoppingEdge AIEdge ComputingEdge DetectionEigenvalues and EigenvectorsElon MuskEmbedding SizeEmbeddingsEmbodied AIEmergent AbilitiesEmotion RecognitionEnsemble MethodsEpisodic MemoryEpochEthical AIEthical AI GuidelinesEthical AuditingEthical Decision-MakingEthical DilemmasEthical FrameworksEthics of AIETL ProcessesEvolutionary AlgorithmsExistential RiskExpectation-MaximizationExpectation-Maximization AlgorithmExpected Calibration ErrorExpert SystemsExplainabilityExploration vs. ExploitationExploratory Data AnalysisExport Controls
F
Foundation ModelFine-tuningForward PropagationFeature ExtractionFusion / Multimodal FusionF1 ScoreFacial RecognitionFairnessFastAIFeature EngineeringFeature ImportanceFeature SelectionFeature StoreFeature StoresFederated LearningFei-Fei LiFew-Shot LearningFinite Element AnalysisFirst-Order LogicFlow MatchingForce ControlFoundation Model EconomyFoundation ModelsFourier TransformFPGAsFrame LanguagesFunctional Analysis
G
Gradient DescentGraph Neural Network (GNN)Generative AIGame Playing AIGame TheoryGame Theory SimulationsGAN / Generative Adversarial NetworkGated 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 SearchGrounding
H
Hierarchical ModelHidden LayerHyperparameterHallucinationHeuristicHadoopHeatmapHelpHeuristic AlgorithmsHidden Markov ModelsHierarchical Reinforcement LearningHigh-Performance ComputingHIPAAHistogramHOGHPC ClustersHugging FaceHugging Face TransformersHuman RightsHuman-in-the-LoopHuman-Robot InteractionHyperparameter OptimizationHyperparameter Tuning
I
Imbalanced DataInstance / SampleIntelligence Amplification / AugmentationInterpretabilityIlya SutskeverImage CaptioningImage ClassificationImage RecognitionImage SegmentationImpact on EmploymentIn-Context LearningIndustrial RobotsInferenceInference EnginesInference OptimizationInferential StatisticsInformation TheoryInformed ConsentInfrastructure as CodeInstance SegmentationInstruction tuningIntellectual Property RightsIntelligent AgentsIntrusion Detection SystemsInverse Reinforcement Learning
J
JuxtapositionJoint EmbeddingJitteringJAXJohn McCarthyJoint Probability DistributionJSONL / JSON-linesJuergen SchmidhuberJupyter Notebooks
K
Knowledge DistillationKernel TrickK-means ClusteringK-Nearest NeighborsK-Shot LearningKai-Fu LeeKalman FiltersKerasKL Divergence (Kullback–Leibler Divergence)Knowledge CutoffKnowledge GraphsKnowledge RepresentationKubernetes
L
Large Language Model (LLM)Loss FunctionLatent VariableLearning RateL1 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 Memory
M
Machine Learning (ML)Multimodal / MultimodalityMulti-head AttentionMeta-learningModelMachine 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 RetrievalMXNet
N
Novelty Detection / Anomaly DetectionNeural NetworkNormalizationn-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 BostromNLP / Natural Language ProcessingNLTKNLU / Natural Language UnderstandingNoise ReductionNoSQL DatabasesNumPyNVIDIA CUDA
O
Objective FunctionOverfittingOnline LearningOptimizerObject DetectionObject TrackingOne-hot EncodingOntologiesOpenAIOpenAI GPTOptical Character RecognitionOptimization TheoryOut-of-Distribution (OOD) Data
P
ParameterPolicy / Reinforcement Learning PolicyPromptPretrainingPandasParallel ComputingParameter CountParameter-Efficient Fine-Tuning (PEFT)Part-of-Speech TaggingPartial Dependence PlotsPath PlanningPattern RecognitionPeople also viewedPerception in AIPerceptronPerplexityPeter NorvigPhilosophy of MindPhoneticsPipelinesPlanning and SchedulingPlotlyPolicy GradientsPolicy OptimizationPoolingPose EstimationPositional EncodingPragmaticsPrecisionPredictive ModelingPredictive ProbabilityPreference TuningPrincipal Component AnalysisPrivacyPrivacy-Preserving Machine LearningProbability Density FunctionsProbability TheoryProblem SolvingProcess ModelingProcess-Based SupervisionPrompt ChainingPrompt EngineeringPrompt InjectionPrompt MarketplacePrompt TemplatesPropositional LogicProximal Policy OptimizationPruningPyTorch
Q
QuantizationQueryQueue / BufferQuality EstimationQ-learningQLoRA (Quantized Low-Rank Adaptation)Quantum ComputingQuantum Machine LearningQuestion AnsweringQuestion Answering Systems
R
Reinforcement Learning (RL)Retrieval Augmented Generation (RAG)RegularizationRepresentation LearningR-SquaredRandom ForestsRandom SearchRay KurzweilReal AnalysisReasoning EnginesRecallRecommender SystemsRecurrent Neural NetworksRed TeamingRegressionRegression AnalysisRegulatory ComplianceReinforcement Learning from Human FeedbackReinforcement Learning in RoboticsReproducibilityResponsible AIRetrieval-Augmented GenerationReward FunctionRMSpropRNN / Recurrent Neural NetworkRobot KinematicsRobot VisionRobotic ManipulationRobotic Operating System (ROS)Robotics TransformersRobustness in AI ModelsROC CurveRodney BrooksRoot Mean Squared ErrorRule-Based Systems
S
Supervised LearningSamplingSequence ModelingSelf-Supervised LearningSaliency 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 SimulationSoftmaxSOTA (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 Prompt
T
Transfer LearningTokenizerTuning / Hyperparameter TuningTransformerTraining Datat-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 Test
U
Uncertainty EstimationUnsupervised LearningUnderfittingUniversal Approximation TheoremU-NetUMAPUnmanned Aerial Vehicles (UAVs)Unmanned Ground Vehicles
V
Validation SetVector EmbeddingVariational Autoencoder (VAE)Vanishing / Exploding GradientValidation CurveValue FunctionVector DatabaseVersion Control for ModelsVibe code an AI ToolVideo Generation ModelsVirtual Reality SimulationsVision Transformer (ViT)Voice BiometricsVoice CloningVoice Conversion
W
Whitening / Whitening TransformationWeak SupervisionWord EmbeddingWorkflowWarmup StepsWeak AIWeight DecayWord EmbeddingsWord Sense DisambiguationWordPieceWorld Models
X
X-axis / feature axisXAI / Explainable AIXLMXLNetXOR problem
Y
Yield (model yield / throughput)Yoga of AIY-transform / YUVY-axis / feature axisYAGNI (You Aren't Gonna Need It)Yann LeCunYoshua Bengio
Z
Zero-gradient phenomenonZero-centric / Zero-bias initializationZero-shot Learning / Zero-shot inferenceZygosity in augmentationZ-score NormalizationZero Trust Architecture

Z-score 정규화란?

AI Fundamentals
[wˌʌt ɪz zˈiːskˈoːɹ nˌoːɹməlᵻzˈeɪʃən]
마지막 업데이트: 2025년 10월 15일

Z-score 정규화는 표준화라고도 하며, 통계 분석 및 기계 학습에서 일반적으로 사용되는 데이터 전처리 기술입니다. 이 기술의 주요 목적은 데이터를 평균이 0이고 표준 편차가 1인 표준 정규 분포로 변환하여 모델 훈련에 대한 다양한 척도와 단위의 영향을 제거하는 것입니다.


많은 데이터 분석 작업에서 특성의 단위와 범위가 다를 수 있으며, 이로 인해 특정 특성이 모델 훈련에서 지배적인 역할을 하게 됩니다. Z-score 정규화는 각 데이터 포인트에서 평균을 빼고 표준 편차로 나누어 각 특성의 데이터 분포를 보다 일관되게 만들어 후속 분석 및 모델링을 용이하게 합니다.


Z-score는 다음 공식으로 계산됩니다: Z = (X - μ) / σ, 여기서 X는 정규화할 원래 값, μ는 평균, σ는 표준 편차입니다. 이 공식을 통해 데이터를 표준화된 척도로 변환할 수 있습니다.


Z-score 정규화는 지원 벡터 머신(SVM), 로지스틱 회귀 및 신경망과 같은 기계 학습 모델에서 널리 사용됩니다. 이러한 모델에서 특성의 척도 일관성은 모델의 수렴 속도와 정확성을 향상시킬 수 있습니다.


장점으로는 특성 간의 차원 영향을 제거하여 모델 훈련을 더욱 안정적으로 만들고, 특히 경량 방법을 기반으로 한 알고리즘의 수렴 속도를 높이는 데 도움이 됩니다. 그러나 이상치에 민감하여 이상치가 평균 및 표준 편차 계산에 영향을 미쳐 데이터 왜곡을 초래할 수 있습니다. 또한 정규 분포 데이터에만 적합하며, 데이터 분포가 심하게 정규에서 벗어날 경우 효과가 좋지 않을 수 있습니다.


데이터 과학의 발전에 따라 Z-score 정규화 및 그 변형은 빅 데이터 처리, 딥 러닝 및 실시간 데이터 분석에서 계속 사용될 것입니다. 연구자들은 현대 데이터 세트의 문제를 해결하기 위해 더 강력한 정규화 방법을 지속적으로 탐구하고 있습니다.


Z-score 정규화를 사용할 때는 데이터의 분포 상태를 평가하고 정규성을 보장하는 것이 중요합니다. 또한 이상치를 처리하는 것도 전처리 단계 중 하나로 포함되어야 하며, 이는 정규화 결과에 미치는 영향을 최소화할 수 있습니다.

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