Wei Wang

ORCID: 0000-0002-9610-4810
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About
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Research Areas
  • Advanced Computational Techniques and Applications
  • Data Mining Algorithms and Applications
  • Balance, Gait, and Falls Prevention
  • Data Management and Algorithms
  • Advanced Database Systems and Queries
  • Web Data Mining and Analysis
  • Spam and Phishing Detection
  • Advanced Decision-Making Techniques
  • Network Security and Intrusion Detection
  • EEG and Brain-Computer Interfaces
  • Complex Network Analysis Techniques
  • Topic Modeling
  • Advanced Malware Detection Techniques
  • Text and Document Classification Technologies
  • Music and Audio Processing
  • Time Series Analysis and Forecasting
  • Service-Oriented Architecture and Web Services
  • Functional Brain Connectivity Studies
  • Emotion and Mood Recognition
  • Neural Networks and Applications
  • Neural dynamics and brain function
  • Advanced Algorithms and Applications
  • Diabetic Foot Ulcer Assessment and Management
  • Innovative Educational Techniques
  • Fractal and DNA sequence analysis

Xi'an Polytechnic University
2025

Nanjing Normal University
2010-2023

Southeast University
2010-2023

Peking University
2023

Peking University Third Hospital
2023

Lanzhou University
2008-2022

First People's Hospital of Foshan
2022

Hong Kong University of Science and Technology
2004-2021

University of Hong Kong
2004-2021

Center for Devices and Radiological Health
2020

XML documents are typically queried with a combination of value search and structure search. While querying by values can leverage traditional database technologies, evaluating structural relationship, specifically parent-child or ancestor-descendant between element sets has imposed great challenge on efficient query processing. We propose XR-tree, namely, region tree, which is dynamic external memory index specially designed for strictly nested data. The unique feature XR-tree that, given...

10.1109/icde.2003.1260797 article EN 2004-05-13

There is an increased interest in using wearable inertial measurement units (IMUs) clinical contexts for the diagnosis and rehabilitation of gait pathologies. Despite this interest, there a lack research regarding optimal sensor placement when measuring joint kinematics few studies which examine functionally relevant motions other than straight level walking. The goal study was to investigate how location IMU sensors on lower body impact accuracy IMU-based hip, knee, ankle angular...

10.3390/s20215993 article EN cc-by Sensors 2020-10-22

10.1016/0141-8130(94)90042-6 article EN International Journal of Biological Macromolecules 1994-01-01

Emotion recognition with EEG signals is one of hot topics in the fields human-computer interaction and affective computing. Due to inherent nonlinear nonstationary nature signals, most existing emotion models struggle effectively capture their intricate time-frequency features, however, it results daunting challenges for feature extraction affects accuracy. To address issue recognition, this paper proposes a novel DFrft-ES model based on fractional Fourier transform. In model, are...

10.1117/12.3055746 article EN 2025-01-09

Role-playing language agents (RPLAs) have emerged as promising applications of large models (LLMs). However, simulating established characters presents a challenging task for RPLAs, due to the lack authentic character datasets and nuanced evaluation methods using such data. In this paper, we present CoSER, collection high-quality dataset, open models, an protocol towards effective RPLAs characters. The CoSER dataset covers 17,966 from 771 renowned books. It provides dialogues with real-world...

10.48550/arxiv.2502.09082 preprint EN arXiv (Cornell University) 2025-02-13

We address issue related to containment join processing in tree-structured data such as XML documents. A takes two sets of node elements input and returns pairs that the relationship holds between them. While there are previous algorithms for joins, they require both element either sorted or indexed. propose a novel complete query framework based on new coding scheme, PBiTree code. The code allows us determine ancestor-descendant from their PBiTree-based codes efficiently. present optimized...

10.1109/icde.2003.1260808 article EN 2004-05-13

In order to tackle the inaccurate step length measurement of people with different heights and in motion states, a height-adaptive method based on parameters is proposed this paper. This takes people's height, stride frequency, changing accelerometer output while walking into integrated consideration, builds dynamic parameterized model their length. study, these were calibrated thirty sets experiment data from which then verified experimentally by randomly selected subjects, regardless speed...

10.3390/s18041039 article EN cc-by Sensors 2018-03-30

10.1002/marc.1991.030120905 article EN Die Makromolekulare Chemie Rapid Communications 1991-09-01

The huge amount of knowledge in web communities has motivated the research interests threaded discussions. dynamic nature discussions poses lots challenging problems for computer scientists. Although techniques such as semantic models and structural have been shown to be useful a number areas, they are inefficient understanding due three reasons: (I) most users read existing messages before posting, posts discussion thread temporally dependent on previous ones; It causes semantics structure...

10.1145/1571941.1571966 article EN 2009-07-19

Objective Develop an improved method for auditing hospital cost and quality tailored to a specific hospital's patient population. Data Sources/Setting Medicare claims in general, gynecologic urologic surgery, orthopedics from Illinois, New York, Texas between 2004 2006. Study Design A template of 300 representative patients single index was constructed used match at 43 hospitals that had minimum 500 over 3‐year study period. Collection/Extraction Methods From each we chose most resembling...

10.1111/1475-6773.12226 article EN Health Services Research 2014-09-08

In recent years, vulnerable hosts and maliciously registered domains have been frequently involved in mobile attacks. this paper, we explore the feasibility of detecting malicious visited on a cellular network based solely lexical characteristics domain names. addition to using traditional quantitative features names, also use word segmentation algorithm segment names into individual words greatly expand size feature set. Experiments sample real-world data from large show that improves our...

10.48550/arxiv.1506.04111 preprint EN other-oa arXiv (Cornell University) 2015-01-01

Abstract To enhance apparent viscosities in brine solutions with high salinities for associative water‐soluble polymers, a novel macromonomer (APEO): allyl‐capped octylphenoxy poly(ethylene oxide) (degree of polymerization: 14) was synthesized, and tetra‐polymer (PAVO) synthesized by copolymerizing APEO, acrylamide (AM), sodium 2‐acrylamido‐2‐methylpropane sulfonate (NaAMPS), vinyl biphenyl (VP). The the PAVO polymer were characterized Fourier transform infrared (FTIR) spectroscopy proton...

10.1002/app.36743 article EN Journal of Applied Polymer Science 2012-03-06

In this paper, we propose an approach to materialize XML data warehouses based on the frequent query patterns discovered from historical queries issued by users. The schemas of integrated documents in warehouse are built using these represented as Frequent Query Pattern Trees (FreqQPTs). Using hierarchical clustering technique, FreqQPTs clustered and merged produce a specified number for actual feeding. Maintenance issue is also treated paper.

10.1145/1062745.1062786 article EN 2005-01-01

Voice has been used as biometrics for human authentication because different people have voice characteristics due to vocal tract shapes and intonations. However, traditional based is subject four types of attacks: impersonation, conversion, synthesis replay. In this paper, we propose SpeakPrint, an ultrasound speech scheme smartphones which resistant these attacks. Compared with system focuses on what a user speaks, SpeakPrint captures how speaks by recording mouth movement through signal...

10.1109/sahcn.2019.8824958 article EN 2019-06-01

This study aimed to primarily examine the association between memory deficit and increased fall risk, second, explore underlying neuroanatomical linkage of this in elderly with aMCI mild AD.In cross-sectional study, a total 103 older adults were included (55 cognitively normal, CN; 48 cognitive impairment, CI, aMCI, AD). Memory was assessed by Auditory Verbal Learning Test (AVLT). Fall risk evaluated Timed Up Go (TUG) Test, heel strike angles, stride speed, which collected an...

10.3389/fnins.2022.896437 article EN cc-by Frontiers in Neuroscience 2022-06-08

Abstract Poly( N,N ‐dimethylaminoethyl methacrylate) (PDMAEMA) can be crosslinked by interfacial polymerization to develop a positively charged dense network structure. According this mechanism, hollow‐fiber composite nanofiltration (NF) membrane was prepared quaternization achieve PDMAEMA gel layer on the outer surface of polysulfone ultrafiltration (UF) membranes with aqueous solution as coating and p ‐xylylene dichloride an agent. The preparation conditions, including concentration,...

10.1002/app.38839 article EN Journal of Applied Polymer Science 2013-02-06
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