yusuke1997/dblp-id-title huggingface dataset:
RPF: Reference-Based Progressive Face Super-Resolution Without Losing Details and Identity
WiWeHAR: Multimodal Human Activity Recognition Using Wi-Fi and Wearable Sensing Modalities
Cross-View Gait Recognition Model Combining Multi-Scale Feature Residual Structure and Self-Attention Mechanism
A Tabular Variational Auto Encoder-Based Hybrid Model for Imbalanced Data Classification With Feature Selection
FastDerainNet: A Deep Learning Algorithm for Single Image Deraining
Joint Preloading and Bitrate Adaptation for Short Video Streaming
RIS Assisted Triple-Hop RF-FSO Convergent With UWOC System
Image Deformation Estimation via Multiobjective Optimization
MLGN:A Multi-Label Guided Network for Improving Text Classification
Efficient Tuning Scheme of Mode-Switching-Based Powertrain Oscillation Controller Considering Nonlinear Backlash
Sankalp: AI-Powered Career Guidance System
Single-Electrode Triboelectric Nanogenerator Device Framework for Wrist Pulse Signal (Nadi) Analysis and Disease Detection
Novel System-Level Driving-Cycle-Oriented Design Co-Optimization of Electrical Machines for Electrical Vehicles
An Adaptive Framework for Collective Anomaly Detection in Key Performance Indicators From Mobile Networks
IVEX-WA and IVEX-MetaStack Ensemble Models: A Transfer Learning Approach for Still-Image Human Action Recognition With XAI Visualization
An Adaptive Approach for Ice Detection in Wind Turbine With Inductive Transfer Learning
Human-Aware Trajectory Optimization for Enhancing D * Algorithm for Autonomous Robot Navigation
An Optimally Configured and Improved Deep Belief Network (OCI-DBN) Approach for Heart Disease Prediction Based on Ruzzo-Tompa and Stacked Genetic Algorithm
Black-Box vs. White-Box: Understanding Their Advantages and Weaknesses From a Practical Point of View
Five-Level Hysteresis DTC of Open-End Winding Permanent Magnet Synchronous Motors With Zero-Sequence Currents Suppression and Torque Ripple Reduction
QFM Signals Parameters Estimation Based on Double Scale Two Dimensional Frequency Distribution
ABNE: An Attention-Based Network Embedding for User Alignment Across Social Networks
Fine-Grained Image Classification Network Based on Reinforcement and Complementary Learning
Broadband Single-Layered, Single-Sided Flexible Linear-to-Circular Polarizer Using Square Loop Array for S-Band Pico-Satellites
Segmentation and Recognition for Historical Tibetan Document Images
Feature Based Sampling: A Fast and Robust Sampling Method for Tasks Using 3D Point Cloud
Voice Disorder Identification by Using Machine Learning Techniques
Early Diagnosis of Autism: A Review of Video-Based Motion Analysis and Deep Learning Techniques
Capacity Improvement for Full Duplex Device-to-Device Communications Underlaying Cellular Networks
Improving Structure-From-Motion and Rendering Quality for Thermal Image-Based 3D Gaussian Splatting
YOLO-MES: An Effective Lightweight Underwater Garbage Detection Scheme for Marine Ecosystems
Intensity Modulated Gas RI Sensor Based on Inornate Antiresonant Hollow-Core Fiber With Ultrahigh Sensitivity
Design Space Exploration of HW Accelerators and Network Infrastructure for FPGA-Based MPSoC
Influence of Load Modeling on the Cost of Ensuring Stability Using TSCOPF
Reinforcement Learning for Reconfigurable Robotic Soccer
Power Converters Coolant: Past, Present, Future, and a Path Toward Active Thermal Control in Electrified Ship Power Systems
Motif-Aware Adversarial Graph Representation Learning
Dynamic Channel Calibration on a Crystal-Free Mote-on-a-Chip
An Adaptive Cruise Control Method Based on Improved Variable Time Headway Strategy and Particle Swarm Optimization Algorithm
Log-Based Session Profiling and Online Behavioral Prediction in E-Commerce Websites
Parameter Identification of Induction Motors Based on Third-Order Generalized Integrators
Leveraging LLMs for COVID-19 Fake News Generation and Detection: A Comparative Analysis on Twitter Data
Secure Communication of Military Reconnaissance Images Over UAV-Assisted Relay Networks
Refining Microservices Placement Employing Workload Profiling Over Multiple Kubernetes Clusters
Temperature-Dependent Logic Behavior of Logic Transistors Based on WS 2
A New Trajectory-Planning Beetle Swarm Optimization Algorithm for Trajectory Planning of Robot Manipulators
A Systematic Literature Review of the Pain Management Mobile Applications: Toward Building a Conceptual Model
Utilization of Improved Annotations From Object-Based Image Analysis as Training Data for DeepLab V3+ Model: A Focus on Road Extraction in Very High-Resolution Orthophotos
A Systematic Literature Review on the Negative Impacts of AI-Generated Virtual Digital Humans
Grading of Diabetic Retinopathy Images Based on Graph Neural Network
Delay-Dependent Admissibility Analysis and Dissipative Control for T-S Fuzzy Time-Delay Descriptor Systems Subject to Actuator Saturation
Enhanced Artificial Vision for Visually Impaired Using Visual Implants
A Sliding Window-Based Approach for Mining Frequent Weighted Patterns Over Data Streams
A Novel Global Fast Terminal Sliding Mode Control Scheme for Second-Order Systems
Fonts That Fit the Music: A Multimodal Design Trend Analysis of Lyric Videos
Distributed Fixed-Time Nonsingular Terminal Sliding Mode Time-Varying Formation Control of ASVs Based on Hierarchical Control Mechanism
Predicting Atmospheric Dispersion of Industrial Chemicals Using Machine Learning Approaches
Safety Tracking Motion Control Based on Forbidden Virtual Fixtures in Robot Assisted Nasal Surgery
Updatable Ciphertext-Policy Attribute-Based Encryption Scheme With Traceability and Revocability
Research on Temperature and Braking Performance of Water-Cooled Eddy Current Retarder
Towards Enhancing Spectrum Sensing: Signal Classification Using Autoencoders
Freeways' Road Safety Analysis Through Accident Database and Human Behavior
AESGRU: An Attention-Based Temporal Correlation Approach for End-to-End Machine Health Perception
Radars for Autonomous Driving: A Review of Deep Learning Methods and Challenges
Aggregator to Electric Vehicle LoRaWAN Based Communication Analysis in Vehicle-to-Grid Systems in Smart Cities
A Blockchain-Based Efficient Data Integrity Verification Scheme in Multi-Cloud Storage
Multiple Projector Camera Calibration by Fiducial Marker Detection
Nonlinearly Activated IEZNN Model for Solving Time-Varying Sylvester Equation
Enhancing Hosting Capacity of Uncertain and Correlated Wind Power in Distribution Network With ANM Strategies
The Brainwave Interaction of Dual-Person Collaborative Tasks in a Virtual Reality Environmental Game
Design and Experiments of Electromagnetic Heating Forming Technology
Analogical Reasoning With Deep Learning-Based Symbolic Processing
A Twofold Model for VNF Embedding and Time-Sensitive Network Flow Scheduling
Median Filtering Forensics Using Multiple Models in Residual Domain
Unraveling Heterogeneity of ADNI's Time-to-Event Data Using Conditional Entropy - Part I: Cross-Sectional Study
Label-Free Normal and Cancer Cells Classification Combining Prony's Method and Optical Techniques
Decision-Making Approach Based on Bipolar Complex Fuzzy Uncertain Linguistic Aggregation Operators
Reliability Analysis of Centralized Radio Access Networks in Non-Line-of-Sight and Line-of-Sight Scenarios
A Comprehensive Blockchain-Based System for Educational Qualifications Management and Verification to Counter Forgery
An Investigation of Optimized Carbon Tax-Subsidy Mechanism to Enhance Power System Sustainability Considering Wind Power Penetration
Leveraging Clean Power From Base Transceiver Stations for Hybrid and Fast Electric Vehicle Charging Stations System With Energy Storage Devices
A Term Weighted Neural Language Model and Stacked Bidirectional LSTM Based Framework for Sarcasm Identification
Amplitude SAR Imagery Splicing Localization
Sarcasm Detection Using Multi-Head Attention Based Bidirectional LSTM
A Novel Robust Reversible Watermarking Scheme for Protecting Authenticity and Integrity of Medical Images
Intelligent Traffic-Monitoring System Based on YOLO and Convolutional Fuzzy Neural Networks
A Novel Simultaneous Calibration and Localization Algorithm Framework for Indoor Scenarios
Q-Band Radial Waveguide Power Divider Based on a Specific Cycloidal-Like Transition Implementation
BorB: A Novel Image Segmentation Technique for Improving Plant Disease Classification With Deep Learning Models
Impact of Driving Cycles and Terrain on the Performance and Cost of EV Battery Chemistries: A Comparative Analysis and Evaluation
An Enhanced Unsupervised Extreme Learning Machine Based Method for the Nonlinear Fault Detection
A Pricing Strategy Reflecting the Cost of Power Volatility to Facilitate Decentralized Demand Response
Rolling Time Domain Charging Allocation of Electric Vehicles Under Time Varying Demand
Image Enhancement Using Adaptive Region- Guided Multi-Step Exposure Fusion Based on Reinforcement Learning
Efficient TCP Calibration Method for Vision Guided Robots Based on Inherent Constraints of Target Object
Lightweight Authenticated-Encryption Scheme for Internet of Things Based on Publish-Subscribe Communication
Performance Characterization of Machine-to-Machine Networks With Energy Harvesting and Social-Aware Relays
Explainable Machine Learning for Predicting Computational Thinking Proficiency in K-12 Students Using National-Level Data
Energy-Aware Virtual Machine Allocation in DVFS-Enabled Cloud Data Centers
Prediction Method of Concentricity and Perpendicularity of Aero Engine Multistage Rotors Based on PSO-BP Neural Network
Electromyography-Based Decoding of Dexterous, In-Hand Manipulation of Objects: Comparing Task Execution in Real World and Virtual Reality
An Efficient Mixture Model Approach in Brain-Machine Interface Systems for Extracting the Psychological Status of Mentally Impaired Persons Using EEG Signals
A Novel Approach for Asymmetric Quantum Error Correction With Syndrome Measurement
Optimal Energy Trading for Renewable Energy Integrated Building Microgrids Containing Electric Vehicles and Energy Storage Batteries
Explainable Machine Learning Prediction for the Academic Performance of Deaf Scholars
GPD-Nodule: A Lightweight Lung Nodule Detection and Segmentation Framework on Computed Tomography Images Using Uniform Superpixel Generation
Daxing Smartphone Identification Dataset
Induced Norm-Based Analysis for Computed Torque Control of Robot Systems
A Method for Identifying Flaws on Product Surface Based on Spatial Connectivity Domain
Cervical Cancer Detection: A Comprehensive Evaluation of CNN Models, Vision Transformer Approaches, and Fusion Strategies
Research on Fast Calculation Method for Relay Protection Setting Mismatch Points of Lines Based on Deep Learning
Vocal92: Audio Dataset With a Cappella Solo Singing and Speech
Analysis of New Technology Trends in Education: 2010-2015
A Mutual Authentication Scheme for Secure Fog Computing Service Handover in Vehicular Network Environment
RF Energy Scavenging With a Wide-Range Input Power Level
A New RF Beam Training Method and Asymptotic Performance Analysis for Multi-User Millimeter Wave Systems
Simplified Interval-Valued Intuitionistic Fuzzy Line Integrals and Their Application
High Efficiency Electro-Optic Modulation in a Graphene Silicon Hybrid Tapered Microring Resonator
Torque Ripple Minimization of a Five-Phase Induction Motor Under Open-Phase Faults Using Symmetrical Components
Predicting Molecule Toxicity via Descriptor-Based Graph Self-Supervised Learning
CDNs Meet CN An Empirical Study of CDN Deployments in China
Complex Emotion Estimation Using Analysis-by-Synthesis of Facial Expression Images
Automatic Sleep Scoring Using Intrinsic Mode Based on Interpretable Deep Neural Networks
Review of Visual Defect Detection Technology for Micro Coaxial Cable Harnesses
Multi-View Multi-Label Learning With View-Label-Specific Features
Graph Convolutional Neural Networks for Micro-Expression Recognition - Fusion of Facial Action Units for Optical Flow Extraction
Efficient Hairpin Winding Fault Detection Using Impedance Measurements
A New Metaphor-Free Metaheuristic Approach Based on Complex Networks and Bezier Curves
The Effect of Learning-Based Adaptivity on Students' Performance in 3D-Virtual Learning Environments
Abnormal Transactions Detection in the Ethereum Network Using Semi-Supervised Generative Adversarial Networks
Multi-Layer Perceptron Model on Chip for Secure Diabetic Treatment
Formal Specification and Verification of Smart Contract-Based Loan Management System Using TLA+
Arbitrary Shape Natural Scene Text Detection Method Based on Soft Attention Mechanism and Dilated Convolution
Enhanced Logical Representations of a Real Network Based on an Algebraic Model
Incorporating Attention Mechanism Into CNN-BiGRU Classifier for HAR
Energy-Efficient Index Modulation With In-Phase/Quadrature Format in the Generalized Fading Channel
A Survey on the Functionalities of Data Catalog Tools
Enhancing Insider Threat Detection in Imbalanced Cybersecurity Settings Using the Density-Based Local Outlier Factor Algorithm
Survey of Strategies to Optimize Battery Operation to Minimize the Electricity Cost in a Microgrid With Renewable Energy Sources and Electric Vehicles
A Fully Decentralized Multi-Agent Fault Location and Isolation for Distribution Networks With DGs
FPGA Realization of Two Different Fractional- Order Time-Delay Chaotic System With Predefined Synchronization Time
Complex Network Metrics: Can Deep Learning Keep up With Tailor-Made Reference Algorithms?
A Gravitational-Double Layer Extreme Learning Machine and its Application in Powerlifting Analysis
Multi-Modal Physiological Data Fusion for Affect Estimation Using Deep Learning
Design of Intrusion Detection System for Internet of Things Based on Improved BP Neural Network
Circularly Polarized Cross-Dipole Antenna for UHF RFID Readers Applicated in the Warehouse Environment
Large-Scale Evolutionary Multi-Objective Optimization Based on Direction Vector Sampling
Recommendations for Developing Immersive Virtual Reality Serious Game for Autism: Insights From a Systematic Literature Review
Disaggregating Transform Learning for Non-Intrusive Load Monitoring
Arabic-Chinese Neural Machine Translation: Romanized Arabic as Subword Unit for Arabic-sourced Translation
Investigation on Tree Molecular Genome of Arabidopsis Thaliana for Internet of Things
VisGraphVar: A benchmark generator for Assessing Variability in Graph Analysis Using Large Vision-Language Models
Capability for Multi-Core and Many-Core Memory Systems: A Case-Study With Xeon Processors
High-Precision Measurement of Brillouin Frequency Shift in Brillouin Optical Time-Domain Reflectometer Based on Half-Peak Fitting Algorithm of Power Spectrum
State Estimation and Tracking Control of Saturation Sandwich Systems Based on Particle Swarm Optimization
Research on Cooling Technology of Shredder Cutting Tool With Ultrasonic Vibration-Assisted Cutting
Extraction of Instantaneous Frequencies and Amplitudes in Nonstationary Time-Series Data
Exploitations of Multiple Rows Hammering and Retention Time Interactions in DRAM Using X-Ray Radiation
Complexity-Reduced Super Resolution for Foveation-Based Driving Head Mounted Displays
An Efficient Recommender System Method Based on the Numerical Relevances and the Non-Numerical Structures of the Ratings
DL-Tags: DLT and Smart Tags for Decentralized, Privacy-Preserving, and Verifiable Supply Chain Management
IPFL: Interpretable Federated Learning for Personalized Healthcare
Optimal Arrangement of Power Cables in Ducts Using the Agamogenetic Algorithm
Design of a High Performance Resonant Controller for Improved Stability and Robustness of Islanded Three-Phase Microgrids
Design and Analysis of the Multifunctional Oil-Injection Equipment for Deep-Sea Hydraulic Systems
Modeling, Simulation, and Design of Electromagnetic Capacity Control System for Reciprocating Compressors
Joint Neighbor Discovery and Topology Exchange With Directional Antennas in Multi-Hop MANETs
Multivariate Mixed EWMA-CUSUM Control Chart for Monitoring the Process Variance-Covariance Matrix
Control of LPV Modeled AC-Microgrid Based on Mixed H 2 /H ∞ Time-Varying Linear State Feedback and Robust Predictive Algorithm
Feature Engineering for Mid-Price Prediction With Deep Learning
TrajDD-GAN: A Synthetic Mobility Trajectory Generation Solution Based on Diffusion Models
Consortium Blockchain Based Lightweight Message Authentication and Auditing in Smart Home
Multi-Armed Bandit Regularized Expected Improvement for Efficient Global Optimization of Expensive Computer Experiments With Low Noise
Non-Line-of-Sight Channel Performance of Plane Spiral Orbital Angular Momentum MIMO Systems
Adaptive Neural Network Linear Parameter-Varying Control of Shipboard Direct Current Microgrids
Adaptive Neural Command Filtered Tracking Control for Flexible Robotic Manipulator With Input Dead-Zone
Water Pipeline Leak Detection and Localization With an Integrated AI Technique
Hydrogen Utilization as a Plasma Source for Magnetohydrodynamic Direct Power Extraction (MHD-DPE)
Virtual Vector-Based FCS-MPC for NPC Three-Level Grid-Tied Inverter Without Weighting Factor of Neutral-Point Voltage Balancing
Finite-Time Command Filtered Backstepping Algorithm-Based Pitch Angle Tracking Control for Wind Turbine Hydraulic Pitch Systems
PNGV Equivalent Circuit Model and SOC Estimation Algorithm for Lithium Battery Pack Adopted in AGV Vehicle
Navigating the Web of Disinformation and Misinformation: Large Language Models as Double-Edged Swords
A Deep Neural Network Model for Predicting Electric Fields Induced by Transcranial Magnetic Stimulation Coil
Orthogonal Chirp-Division Multiplexing for Future Converged Optical/Millimeter-Wave Radio Access Networks
The Impacts of the Cross-Chain Collaboration Center Model on Transportation Performance: A Case Study of a Bulk Transportation Network in Thailand
A Novel Center-Tapped Rectifier With Current-Balancing and Voltage-Clamped Capability for LLC Resonant Converter
Modeling and Analysis of Multi-Tier Clustered Millimeter-Wave Cellular Networks With User Classification for Large-Scale Hotspot Area
A Lightweight Key Agreement and Authentication Scheme for Satellite-Communication Systems
Optimal Wind Turbine Design Based Wind Potential and Radial Distribution Network Characteristics
Elliptical Model-Based Robust Pedestrian Pose Tracking by LiDAR via Bi-Level Moving Horizon Random Sample Consensus
A Time Domain-Based Iterative Method for Helicopter Maritime Search Area Planning and Construction of the Simulation Environment
Sentence-Level Classification Using Parallel Fuzzy Deep Learning Classifier
Impact of AI Techniques in Electrical Engineering With Spherical Fuzzy Soft Geometric Aggregation Operators
Large-Scale Assessment of Mobile Crowdsensed Data: A Case Study
A Two-Stage Model Identification Method for Simulation of Electrical Wave Propagation in Heart Tissue
Aeroengine Robust Gain-Scheduling Control Based on Performance Degradation
Semantic Preference-Based Personalized Recommendation on Heterogeneous Information Network
Measurement of the Local Sound Pressure on a Bias-Flow Liner Using High-Speed Holography and Tomographic Reconstruction
GDPR Compliant Blockchains-A Systematic Literature Review
Online Extremism Detection in Textual Content: A Systematic Literature Review
The Modified Probability Hypothesis Density Filter With Adaptive Birth Intensity Estimation for Multi-Target Tracking in Low Detection Probability
Achievable Rate Optimization for Massive MIMO Enabled SWIPT Systems Over Downlink Rician Channels
Security-Constrained Multi-Objective Optimal Power Flow for a Hybrid AC/VSC-MTDC System With Lasso-Based Contingency Filtering
Random Noise Reduction in Seismic Data by Using Bidimensional Empirical Mode Decomposition and Shearlet Transform
Microsecond-Level Real-Time Ethernet Deterministic Bus (REDBUS): Architecture and Motor Control Experiments
Design and Analysis of High Speed Rotor in Air-Core Pulsed Alternator
The Ability of Project Managers to Implement Industry 4.0-Related Projects
Uncertainty Based Optimal Sample Selection for Big Data
Comparing the Role of Long Duration Energy Storage Technologies for Zero-Carbon Electricity Systems
RCD: Radial Cell Decomposition Algorithm for Mobile Robot Path Planning
Two-Layer Control Framework and Aggregation Response Potential Evaluation of Air Conditioning Load Considering Multiple Factors
Opportunistic Networks Link Prediction Method Based on Bayesian Recurrent Neural Network
Mobile Service Traffic Classification Based on Joint Deep Learning With Attention Mechanism
FedITD: A Federated Parameter-Efficient Tuning With Pre-Trained Large Language Models and Transfer Learning Framework for Insider Threat Detection
Multi-Dimensional Data Compression and Query Processing in Array Databases
Segmentation of the Main Vessel of the Left Anterior Descending Artery Using Selective Feature Mapping in Coronary Angiography
Digital Twin Bionics: A Biological Evolution-Based Digital Twin Approach for Rapid Product Development
Model-Based Reinforcement Learning for Eco-Driving Control of Electric Vehicles
Crow Search Algorithm: Theory, Recent Advances, and Applications
Reactive Planner Synthesis Under Temporal Logic Specifications
E-Voting Meets Blockchain: A Survey
"Think Before You Click" - Malicious URL Detection in Cybersecurity: A Systematic Review and Research Roadmap
Adaptive Rate Polar Code for DCT-Based Digital Image Transmission
First Flight-Testing of LoRa Modulation in Satellite Radio Communications in Low-Earth Orbit
From Coarse to Fine (FC2F): A New Scheme of Colorizing Thermal Infrared Images
A Novel Modeling for Assessing Frequency Behavior During a Hydro-to-Thermal Plant Black Start Restoration Test
Imperative Node Evaluator With Self Replication Mode for Network Intrusion Detection
Multiple Sclerosis Detection Based on Biorthogonal Wavelet Transform, RBF Kernel Principal Component Analysis, and Logistic Regression
Analytical Loss Minimization Control for IPMSM Using Linearized Torque and Loss Modeling
An Online One-Step Method to Identify Inertial Parameters of the Base and the Target Simultaneously for Space Robots in Postcapture
Twin Hyper-Ellipsoidal Support Vector Machine for Binary Classification
A BP Neural Network-Based Hierarchical Investment Risk Evaluation Method Considering the Uncertainty and Coupling for the Power Grid
All Inkjet-Printed Temperature Sensors Based on PEDOT: PSS
Passivity-Based Control With Active Disturbance Rejection Control of Vienna Rectifier Under Unbalanced Grid Conditions
Machine Learning-Based Corrosion-Like Defect Estimation With Shear-Horizontal Guided Waves Improved by Mode Separation
A High Spectral Efficiency Receiver at 57-66 GHz Using 65-nm CMOS in LTCC Package With Polarization MIMO
Wide-Speed Range Operation of PM Vernier Machines Using Wye and Wye-Delta Winding Configurations
Twin3: Pluralistic Personal Digital Twins via Blockchain
Refined Disturbance Rejection-Based Composite Control of Flexible Spacecrafts for Tracking a Tumbling Non-Cooperative Target
Development of Control Techniques Using Modified Fuzzy Based SAPF for Power Quality Enhancement
Embedded Vehicle Routing Problem: A Modeling and Optimization Framework for Real-World Multi-Purpose Truck Network
A Delay-Constrained Network Coding Algorithm Based on Power Control in Wireless Networks
Energy Collaboration for Non-Homogeneous Energy Harvesting in Cooperative Wireless Sensor Networks
ADD: Academic Disciplines Detector Based on Wikipedia
CDED-Net: Joint Segmentation of Optic Disc and Optic Cup for Glaucoma Screening
Different Scale Crack Contour Extraction Techniques for Bridges Incorporating Improved YOLOv5 and GCNet
GPU Acceleration of a Non-Standard Finite Element Mesh Truncation Technique for Electromagnetics
Strong Directional Source Effect and Coping Strategy in Passive Data Detection
Data Secure De-Duplication and Recovery Based on Public Key Encryption With Keyword Search
Certificateless Blind Signcryption With Low Complexity
A Novel Adaptive LSSVR-Based Inverse Optimal Controller With Integrator for Nonlinear Non-Affine Systems
Applications of Genetic Algorithm and Its Variants in Rail Vehicle Systems: A Bibliometric Analysis and Comprehensive Review
State Estimation for Hybrid VSC Based HVDC/AC: Unified Bad Data Detection Integrated With Gaussian Mixture Model