yusuke1997/dblp-id-title huggingface dataset:
Design of a ROS2-Based Hybrid Aerial-Ground Robot for Autonomous Inspection Applications
Towards Intelligent Retail: Automated on-Shelf Availability Estimation Using a Depth Camera
Preferences in Temporal Relational Databases
User-Centric Routing and Adaptive Charging EVCS for Battery Longevity and Improved Drive Anxiety
Outlier-Robust Extended Kalman Filter for State-of-Charge Estimation of Lithium-Ion Batteries
Detection, Classification and Location of Sources of Partial Discharges Using the Radiometric Method: Trends, Challenges and Open Issues
Jump to the Next Level: A Four-Year Gamification Experiment in Information Technology Engineering
Inductive Learning of OWL 2 Property Chains
Surrogate Model-Based Energy-Efficient Scheduling for LPWA-Based Environmental Monitoring Systems
An Empirical Study on Modeling and Prediction of Bitcoin Prices With Bayesian Neural Networks Based on Blockchain Information
A Review on Person Re-Identification Techniques and Its Analysis
DecompositionJ: Parallel and Deterministic Simulation of Concurrent Java Executions in Cyber-Physical Systems
Analysis of the Harmonic Transmission Characteristics of HVDC Transmission Based on a Unified Port Theory Model
Fault-Tolerant Hamiltonian Connectivity of Twisted Hypercube-Like Networks THLNs
On Fundamental Theorems of t-Intuitionistic Fuzzy Isomorphism of t-Intuitionistic Fuzzy Subgroups
Research on Data Link Ontology Mapping Algorithm Based on Bayesian Network Model
Cyclic Signals and Systems in Power Line Communications
Towards Automated Reentrancy Detection for Smart Contracts Based on Sequential Models
Optimal Allocation of Soft Open Point Devices in Renewable Energy Integrated Distribution Systems
An Efficient Approach to Select Instances in Self-Training and Co-Training Semi-Supervised Methods
RMDNet-Deep Learning Paradigms for Effective Malware Detection and Classification
Process Monitoring via Key Principal Components and Local Information Based Weights
Identification of High Energy Gamma Particles From the Cherenkov Gamma Telescope Data Using a Deep Learning Approach
LS-SIFT: Enhancing the Robustness of SIFT During Pose-Invariant Face Recognition by Learning Facial Landmark Specific Mappings
Capturing the Concept Projection in Metaphorical Memes for Downstream Learning Tasks
Image Recommendation Algorithm Based on Deep Learning
Pareto Front-Based Multiobjective Optimization of Distributed Generation Considering the Effect of Voltage-Dependent Nonlinear Load Models
A Three-Phase Constant Common-Mode Voltage Inverter With Triple Voltage Boost for Transformerless Photovoltaic System
Modified Grey-Wolf Algorithm Optimized Fractional-Order Sliding Mode Control for Unknown Manipulators With a Fractional-Order Disturbance Observer
A PSO-Optimized Fuzzy Reinforcement Learning Method for Making the Minimally Invasive Surgical Arm Cleverer
Time-Frequency Filter Bank: A Simple Approach for Audio and Music Separation
Objectivity and Subjectivity in Games: Understanding Engagement and Addiction Mechanism
Memory-Efficient Imagification for Light-Weight Prediction Model of Multivariate Time-Series Data
A Secured Data Management Scheme for Smart Societies in Industrial Internet of Things Environment
Small Modular Reactors: An Overview of Modeling, Control, Simulation, and Applications
Sequential Test Generation and Design-for-Testability With Preferred Interconnect Cubes
Physical Human-Robot Interaction (pHRI) in 6 DOF With Asymmetric Cooperation
Energy Management Strategy of AC/DC Hybrid Microgrid Based on Solid-State Transformer
Sensor-Based Human Activity Recognition Based on Multi-Stream Time-Varying Features With ECA-Net Dimensionality Reduction
Suturing Support by Human Cooperative Robot Control Using Deep Learning
An Experimental Machine Learning Approach for Mid-Term Energy Demand Forecasting
A Joint Knowledge Extraction Model for Tobacco Pest and Disease Prevention Based on BERT+BA+CASREL
Automated Assessment of Computer Programming Practices: The 8-Years UNED Experience
A Cache Placement Strategy Based on Entropy Weighting Method and TOPSIS in Named Data Networking
Coexist WiFi for ZigBee Networks With Fine-Grained Frequency Approach
Dynamic Characteristics-Based Capacity Optimization Strategy for Hybrid AA-CAES and Battery Storage Systems in Source-Grid-Load-Storage Integrated Base
Driving Behavior Clustering for Hazardous Material Transportation Based on Genetic Fuzzy C-Means Algorithm
Energy-Efficient Resource Allocation With Hybrid TDMA-NOMA for Cellular-Enabled Machine-to-Machine Communications
Efficiency Improvement of Function Point-Based Software Size Estimation With Deep Learning Model
DistBlockBuilding: A Distributed Blockchain-Based SDN-IoT Network for Smart Building Management
Line-of-Sight Massive MIMO Channel Characteristics in an Indoor Scenario at 94 GHz
Peak Load Shifting in the Internet of Energy With Energy Trading Among End-Users
Mean of Correlation Method for Optimization of Affective States Detection in Children
QROUTE: An Efficient Quality of Service (QoS) Routing Scheme for Software-Defined Overlay Networks
Advanced Rider Assistance Systems: A Systematic Literature Review of Single Solution and Sensor Fusion
Robust Backstepping Sliding Mode Control for a Quadrotor Trajectory Tracking Application
HSI-LFS-BERT: Novel Hybrid Swarm Intelligence Based Linguistics Feature Selection and Computational Intelligent Model for Alzheimer's Prediction Using Audio Transcript
Machine Learning Techniques to Improve the Cognitive Workload Classification Using Multimodal Sensors' Data
Analysis of the Characteristics of Solar Cell Array Based on MATLAB/Simulink in Solar Unmanned Aerial Vehicle
Sinusoidal Seismic Noise Suppression Using Randomized Principal Component Analysis
Review of Stress Detection Methods Using Wearable Sensors
Multi-Objective Optimization Framework for Optimal Power Flow Problem of Hybrid Power Systems Considering Security Constraints
Reconfigurable and Scalable Artificial Intelligence Acceleration Hardware Architecture With RISC-V CNN Coprocessor for Real-Time Seizure Detection
Model Predictive Control Strategies in Microgrids: A Concise Revisit
Adaptive Centralized Random Access for Collision Free Wireless Local Area Networks
Multimodal Emotion Recognition With Transformer-Based Self Supervised Feature Fusion
Multi-Stage Power-Aware Intelligent Adaptive Routing Algorithms in Bundled Links Based Backbone Networks
Refined Composite Multivariate Multiscale Dispersion Entropy and Its Application to Fault Diagnosis of Rolling Bearing
Utilizing Single Lightwave for Delivering Baseband/FSO/MMW Traffics Simultaneously in PON Architecture
VMMISD: An Efficient Load Balancing Model for Virtual Machine Migrations via Fused Metaheuristics With Iterative Security Measures and Deep Learning Optimizations
Wireless Channel Scene Recognition Method Based on an Autocorrelation Function and Deep Learning
Test Case Prioritization Based on Neural Networks Classification: A Replication Study and Hyper-Parameter Optimization Using Taguchi Methods
EEG-Based Emotion Recognition Using Spatial-Temporal Connectivity
Linkages Between Chinese Stock Price Index and Exchange Rates-An Evidence From the Belt and Road Initiative
Hybrid Precoding-Beamforming Design With Hadamard RF Codebook for mmWave Large-Scale MIMO Systems
Efficient Real-Time Sports Action Pose Estimation via EfficientPose and Temporal Graph Convolution
Power/Energy Minimization Techniques for Variability-Aware High-Performance 16-nm 6T-SRAM
A Micro Radial-Torsional Vibration Ultrasonic Motor Driven by Single-Phase Signal
Performance Evaluation of Dampers Under Dynamic Impact Based on Magnetic Field FE and CFD
Key Generation Algorithms Based on Complex Components of Channel Impulse Response for Massive MIMO Wireless Communication Systems
CMOS Noise Analysis and Simulation From Low Frequency and Baseband to RF and Millimeter Wave
The Power I Know: Zero-Knowledge Proofs and Their Transformative Role in the Future of Cryptography
A Systematic Review on Responsible Multimodal Sentiment Analysis in Marketing Applications
EEG-Based Emotion Classification Using Spiking Neural Networks
Hard-Division and Multi-Model Based Floating Height Prediction for Air Cushion Furnace With Hybrid Nozzles
Face Patches Designed Through Neuroevolution for Face Recognition With Large Pose Variation
Multi-Modal Uterine-Activity Measurements for Prediction of Embryo Implantation by Machine Learning
Cost-Effective Wireless Sensors for Detection of Package Opening and Tampering
MIAEC: Missing Data Imputation Based on the Evidence Chain
Optimal Image-Based Task-Sequence/Path Planning and Robust Hybrid Vision/Force Control of Industrial Robots
A Flexible Consensus Protocol for Distributed Systems
Enhanced Classification of Phonocardiograms Using Modified Deep Learning
MonoBot: A Single-Actuator Walking Robot
A Novel Community Detection Algorithm Based on Node Propagation and Attraction
A Cross-Dimensional Attention Mechanism for Pedestrian Trajectory Forecasting
A Novel Successive-Interference-Cancellation- Aware Design for Wireless Networks Using Software-Defined Networking
Influencer-Driven Paradigm Shifts: Analyzing Sustainability and Customer Behavior in Cell Phone and E-Auto Industries via Social Media Analytics
An Adaptive Similarity-Measuring-Based CMAB Model for Recommendation System
A Provably Constrained Neural Control Architecture With Prescribed Performance for Fault-Tolerant Redundant Manipulators
A Survey on Dimensionality Reduction Techniques for Time-Series Data
Identification of Tailing Ponds From Multi-Source and High-Resolution Remote Sensing Imageries Using Deep Learning-Based Method
A Novel Intelligent Fault Diagnosis Method Based on Variational Mode Decomposition and Ensemble Deep Belief Network
Effectiveness of Super-Resolution Technique on Vegetation Indices
An Approach for Assigning Responsibilities of Short-Term Voltage Variations in Electrical Power Systems
Comparative Energy Analysis of Static and Automated Switching Configurations in Lead-Acid Battery Systems
Coordinated Chassis Control of 4WD Vehicles Utilizing Differential Braking, Traction Distribution and Active Front Steering
Laser Speckle Integrated Multispectral Imaging System for In-Vivo Assessment of Diabetic Foot Ulcer Healing: A Clinical Study
Terahertz Plasmon-Induced Transparency Effect in Parallel Plate Waveguide
Microscopic Structural Analysis of Complex Networks: An Empirical Study Using Motifs
Dynamic Range-Only Localization for Multi-Robot Systems
Optimal Control of AVR System With Tree Seed Algorithm-Based PID Controller
An Improved Artificial Neural Network-Based Approach for Total Harmonic Distortion Reduction in Cascaded H-Bridge Multilevel Inverters
Design of LCC-S Compensation Topology and Optimization of Misalignment Tolerance for Inductive Power Transfer
Vision-Based Relative Pose Estimation of Non-Cooperative Spacecraft Using Time-of-Flight Camera
Graph-Based Profiling of Blockchain Oracles
Optimized Data Fusion With Scheduled Rest Periods for Enhanced Smart Agriculture via Blockchain Integration
Modelling Fuel Consumption and NOₓ Emission of a Medium Duty Truck Diesel Engine With Comparative Time-Series Methods
Detecting Steganography in Inactive Voice-Over-IP Frames Based on Statistic Characteristics of Fundamental Frequency
Flexible Coordination Optimization Scheduling of Active Distribution Network With Smart Load
Lightweight Convolutional Neural Network for Breast Cancer Classification Using RNA-Seq Gene Expression Data
First-Principles Analysis of Energy Exchange in Time-Varying Capacitors for Energy Trapping Applications
Nonlinear Mobile Link Adaptation Using Modified FLNN and Channel Sounder Arrangement
A Two-Step Method for Ionospheric Clutter Mitigation for HFSWR With Two-Dimensional Dual-Polarized Received Array
Motor Imagery Decoding Enhancement Based on Hybrid EEG-fNIRS Signals
COPA: Experimenter-Level Container Orchestration for Networking Testbeds
Reinforced Secure Gossiping Against DoS Attacks in Post-Disaster Scenarios
New Results on Finite-Time Stability and Stabilization of Switched Positive Linear Time-Delay Systems
A Comprehensive Review of Green Computing: Past, Present, and Future Research
A Systematic Approach to Filter Specification for Measuring Quasi-Static Bridge Rotation Under Moving Loads Using DC Accelerometers
Hybrid Control Technique-Based Three-Phase Cascaded Multilevel Inverter Topology
High-Speed MW-Class Generator With Multi-Lane Slotless Winding for Hybrid-Electric Aircraft
Virtual Model Control for Quadruped Robots
Toed-in vs Parallel Displays in Video See-Through Head-Mounted Displays for Close-Up View
Evaluation of Throughput Prediction for Adaptive Bitrate Control Using Trace-Based Emulation
Traceback Analysis of Unknown Nanoparticles Formation Mechanism on OSP Surface Finished PCB for Flip-Chip Package
A Multiplex Connectivity Map of Valence-Arousal Emotional Model
Analytical Study of Dirac Type Dispersion in Simple Periodic Waveguide Structures for Leaky-Wave Applications
Green Internet of Things (GIoT): Applications, Practices, Awareness, and Challenges
Implementing FFE-MLSD With Improved BER and Reduced Complexity for Long-Reach PAM4 Wireline Receivers
Evolution and Competition, a Game Theoretical Analysis of Heterogeneous Wireless Networks in Unlicensed Spectrum
A Wrist-Worn Multimodal Reaction Time Monitoring Device for Ecologically-Valid Cognitive Assessment
A Deep Learning and Geospatial Data-Based Channel Estimation Technique for Hybrid Massive MIMO Systems
Security Analysis of Various Authentication Schemes Based on Three Types of Digital Signature Schemes
Spectrum and Ricci Curvature on the Weighted Strong Product Graphs
Caption Alignment and Structure-Aware Attention for Scientific Table-to-Text Generation
On Nonlinear Model Predictive Vehicle Dynamics Control for Multi-Actuated Car-Semitrailer Configurations
Identity and Aggregate Signature-Based Authentication Protocol for IoD Deployment Military Drone
Rough Fuzzy Substructures of Quantale Module Under Soft Relations and Corresponding Decision-Making Methods
Remote Sensing Dissolved Organic Matter in Freshwater Aquaculture Ponds by the Integration of UAV and Satellite Multispectral Images
Rateless Coded Multiplexing for Downlink Transmission With Two Users: Performance Analysis and System Design
CCL-YOLO: Catenary Components Location Based on YOLO and Gather-Distribute Mechanism
The Effects of Weight Quantization on Online Federated Learning for the IoT: A Case Study
RIS-Assisted Three-Dimensional Drone Localization and Tracking Under Hardware Impairments
Full-Duplex Cooperative Non-Orthogonal Multiple Access With Beamforming and Energy Harvesting
A Low-Cost Single-Anchor Solution for Indoor Positioning Using BLE and Inertial Sensor Data
Control and Hardware-in-the-Loop Simulation of Community Energy Storage Systems Based on Repurposed Electric Vehicle Batteries
Efficiency-Improved UWB Transparent Antennas Using ITO/Ag/ITO Multilayer Electrode Films
Blockchain-Based Solution for Product Recall Management in the Automotive Supply Chain
Hierarchical Maritime Radio Networks for Internet of Maritime Things
Optimization of the Fabrication of Cold Drawn Steel Wire Through Classification and Clustering Machine Learning Algorithms
Transverse Spurious Mode Compensation for AlN Lamb Wave Resonators
Mobility Management in Heterogeneous Network of Vehicular Communication With 5G: Current Status and Future Perspectives
A Multivariate Statistical Quality Control of AISI 52100 Hardened Steel Turning
Miniaturized Metal-Mountable U-Shaped Inductive-Coupling-Fed UHF RFID Tag Antenna With Defected Microstrip Surface
What Happened to the CER Market? A Dynamic Linkage Effect Analysis
Global and Local Context Fusion in Heterogeneous Graph Neural Network for Summarizing Lengthy Scientific Documents
Commutation Failure Predictive Control Based on Fast AC Voltage Measurement in LCC-HVDC
Research on Transmission Line Voltage Measurement Method Based on Improved Gaussian Integral
A Hybrid Meta-Heuristic Feature Selection Method Using Golden Ratio and Equilibrium Optimization Algorithms for Speech Emotion Recognition
Denoising 3D Magnetic Resonance Images Based on Low-Rank Tensor Approximation With Adaptive Multirank Estimation
Simulation Study on Dispersion Properties of As 2 S 3 Three-Bridge Suspended-Core Fiber
Robust Delay Compensation Strategy for LCL-Type Grid-Connected Inverter in Weak Grid
Processor-in-the-Loop Validation of a Gradient Descent-Based Model Predictive Control for Assisted Driving and Obstacles Avoidance Applications
A Robust Deep Learning Approach for Automatic Iranian Vehicle License Plate Detection and Recognition for Surveillance Systems
Fuzzy Multilevel Image Thresholding Based on Modified Discrete Grey Wolf Optimizer and Local Information Aggregation
Snake Aerial Manipulators: A Review
Reversible Logic-Based Hexel Value Differencing - A Spatial Domain Steganography Method for Hexagonal Image Processing
Software Defined Network-Based Multi-Access Edge Framework for Vehicular Networks
CERBEROS: Compression-Based Efficient and Robust Optimized Security for Model Stealing Defense
A Partial Amplify and Forward Cooperative Communication Strategy Based on Blind Signal Detection
A Novel Multiclass Object Detection Dataset Enriched With Frequency Data
The Effectiveness of a Technology-Based Isometrical Transformation Flipped Classroom Learning Strategy in Improving Students' Higher Order Thinking Skills
Heart Rate Variability Responses to Acute Stress as Indicators of Perceived Stress and Resilience
Functional Synergies Applied to a Publicly Available Dataset of Hand Grasps Show Evidence of Kinematic-Muscular Synergistic Control
Minimum-Spanning-Tree-Based Time Delay Estimation Robust to Outliers
Cloud Computing-Assisted Dose Verification System and Method for Tumor Pain Treatment
PKC-RCM: Preoperative Kinematic Calibration for Enhancing RCM Accuracy in Automatic Vitreoretinal Robotic Surgery
Power-Synchronized Grid-Following Inverter Without a Phase-Locked Loop
NFTs for Open-Source and Commercial Software Licensing and Royalties
Dealing With Heterogeneous Information in Multi-Criteria Group Decision-Making Problems: A Comprehensive Design Framework
Large Deviation Analysis of Score-Based Hypothesis Testing
Image Pattern Recognition Combined With Data Mining for Diagnosis and Detection of Myocardial Infarction
Interactive Power Factor Management With Incentives Toward Reduction in Fuel Consumption and Carbon Emission
"Light in and Sound Out": Review of Photoacoustic Imaging in Cardiovascular Medicine
SAHCI: Scheduling Approach for Heterogeneous Content-Centric IoT Applications
Binary-Classifiers-Enabled Filters for Semi-Supervised Learning
Corrections to "Attention to Monkeypox: An Interpretable Monkeypox Detection Technique Using Attention Mechanism"
Bilatangulation: A Novel Measurement Error Compensation Method for Wi-Fi Indoor Positioning With Two Anchors
A Novel Architectural Framework on IoT Ecosystem, Security Aspects and Mechanisms: A Comprehensive Survey
A Review on Antenna Technologies for Ambient RF Energy Harvesting and Wireless Power Transfer: Designs, Challenges and Applications
Structured Line Feature and Merge Strategy Localization Algorithm Based on Constraints
Regulated State Synchronization of Homogeneous Discrete-Time Multi-Agent Systems via Partial State Coupling in Presence of Unknown Communication Delays
Optimizing Symptom Based Testing Strategies for Pandemic Mitigation
A Nonlinear Tire Blowout Stabilizer Based on a Novel Integral Terminal Sliding Mode Controller
Multilabel Feature Selection Using Mutual Information and ML-ReliefF for Multilabel Classification
An End-to-End-Based Low Dimensional Binary Embedding for Chrysanthemum Phenotypic Petal Similarity Evaluation
Capacity Design and Pareto Improvement of Highway Toll Plaza in a Competitive Transport System
Bending Strength Prediction of the Cu-Sn Alloy Through a Visual Quantization Model Integrated With Microstructure Characterization and Machine Learning
DC-Offset Compensation for Three-Phase Grid-Tied SPV-DSTATCOM Under Partial Shading Condition With Improved PR Controller
Inverter-Agnostic DC-Coupled Solar+Storage System
Yours Truly: A Credibility Framework for Effortless LLM-Powered Fact Checking
Cross-Scale KNN Image Transformer for Image Restoration
A Partitioning-Stacking Prediction Fusion Network Based on an Improved Attention U-Net for Stroke Lesion Segmentation
Flight Control of Air-Breathing Hypersonic Vehicles Based on Disturbance Rejection Scheme
Output Feedback Control for Switched Systems With Unmatched Uncertainties Based on the Common Robust Integral Sliding Mode
Design and Analysis of Weighted Frequency-Domain Contention in Wireless LANs
Analysis of Seismic Elastic Steel Structures Using a New Hybrid Optimization Deep Learning Model
Progressive Rain Removal via a Recurrent Convolutional Network for Real Rain Videos
Haptic Interface Device Using Cable Tension Based on Ultrasonic Phased Array
Adaptive Properties of a Ferromagnetic Single-Domain Grain in Alternating Magnetic Fields
Dynamic Group Formation With Intelligent Tutor Collaborative Learning: A Novel Approach for Next Generation Collaboration
Threat From Being Social: Vulnerability Analysis of Social Network Coupled Smart Grid
Provably Secure Pseudo-Identity Three-Factor Authentication Protocol Based on Extended Chaotic-Maps for Lightweight Mobile Devices
Learning-Aided Unary Error Correction Codes for Non-Stationary and Unknown Sources
A New Linear Ultrasonic Motor Using Hybrid Longitudinal Vibration Mode
Centrifugal and Aggregation Module Based on Shallow Features
Novel Broadband Bow-Tie Antenna Based on Complementary Split-Ring Resonators Enhanced Substrate-Integrated Waveguide
Numerical and Experimental Investigations on Influence of Internal Defect Parameters on Partial Discharge Induced UHF Signals in Gas Insulated Switchgear
Dependability of Directional Millimeter Wave Vehicle-to-Infrastructure Communications
A Swin Transformer-Based Approach for Motorcycle Helmet Detection
Open-Cash: An Anonymous Electronic Cash Scheme With Open-Source Observers Based on BBS+ Signatures
A New Single Phase Single Switched-Capacitor Based Nine-Level Boost Inverter Topology With Reduced Switch Count and Voltage Stress
Identifying the Mode and Impact of Technological Substitutions
SoC-Based Early Failure Detection System Using Deep Learning for Tool Wear
A Deep Learning Accelerator Based on a Streaming Architecture for Binary Neural Networks
A Frequency-Domain I/Q Imbalance Calibration Algorithm for Wideband Direct Conversion Receivers Using Low-Cost Compensator
Revolutionizing Marine Stability: A Review of Cutting-Edge Gyro Stabilizer Designs and Techniques for Vessels
Detection of Peach Disease Image Based on Asymptotic Non-Local Means and PCNN-IPELM
Assessing Sleep Quality Using Mobile EMAs: Opportunities, Practical Consideration, and Challenges
An Investigation on the Effects of Wind Flow on Real-Time Structural Health Monitoring With Lamb Wave-Based Technique
Contextual Imputation With Missing Sequence of EEG Signals Using Generative Adversarial Networks
A Differential Privacy Support Vector Machine Classifier Based on Dual Variable Perturbation
Polarization Reconfigurable Aperture-Fed Patch Antenna and Array
Relative Fairness Signal Optimization Considering Traffic Benefits for Different Types of Vehicles
Miniaturized Wideband CP Antenna Using Hybrid Embedded Metasurface Structure
Optimal Backup Power Deployment for Communication Network With Interdependent Power Network
Hybrid Optical Wireless Communication for Versatile IoT Applications: Data Rate Improvement and Analysis
Automated Classification of Snow Crab Shell Condition Using Analysis of Field Images
Feedback Linearization Kalman Observer Based Sliding Mode Control for Semi-Active Suspension Systems
Simple and Effective Simulation Methodology to Optimize Obstacle-Avoiding Flocks
A Method of Robot Base Frame Calibration by Using Dual Quaternion Algebra
On Chip Antenna Measurement: A Survey of Challenges and Recent Trends
A Robust Indirect Kalman Filter Based on the Gradient Descent Algorithm for Attitude Estimation During Dynamic Conditions
PDHS: Pattern-Based Deep Hate Speech Detection With Improved Tweet Representation