Yifei Xu

ORCID: 0000-0002-9169-5228
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About
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Research Areas
  • Sentiment Analysis and Opinion Mining
  • Botulinum Toxin and Related Neurological Disorders
  • Topic Modeling
  • Neurological disorders and treatments
  • Advanced Text Analysis Techniques
  • Cooperative Communication and Network Coding
  • Emotion and Mood Recognition
  • Error Correcting Code Techniques
  • IoT and Edge/Fog Computing
  • Hand Gesture Recognition Systems
  • Software System Performance and Reliability
  • Network Security and Intrusion Detection
  • Genetic Neurodegenerative Diseases
  • Speech and Audio Processing
  • Text and Document Classification Technologies
  • Advanced Malware Detection Techniques
  • Cloud Computing and Resource Management
  • Software-Defined Networks and 5G
  • Coding theory and cryptography
  • Natural Language Processing Techniques
  • Caching and Content Delivery
  • Advanced Vision and Imaging
  • Advanced Image and Video Retrieval Techniques
  • Phonocardiography and Auscultation Techniques
  • Image Retrieval and Classification Techniques

Ningbo Medical Center Lihuili Hospital
2025

Ningbo University
2025

Zhejiang University of Technology
2022-2023

Northeast Electric Power University
2022-2023

Electric Power University
2022

University of California System
2022

Tongji University
2012-2021

Tongji Hospital
2019-2021

Yulin University
2021

Southern University of Science and Technology
2020

Third-party libraries (TPLs) have become a significant part of the Android ecosystem. Developers can employ various TPLs with different functionalities to facilitate their app development. Unfortunately, popularity also brings new challenges and even threats. may carry malicious or vulnerable code, which infect popular apps pose threats mobile users. Besides, code third-party could constitute noises in some downstream tasks (e.g., malware repackaged detection). Thus, researchers developed...

10.1145/3324884.3416582 article EN 2020-12-21

In this paper, we use a wireless sensor node to investigate the relationship between vocal art composition and human body noise. For music, suggested predictor created convergence link model HART graph routing is used systematically design noise science. The optimizes acquisition of information on analyzes acoustic signal characteristics. optimally balanced scheduling has been scientifically distributedly regulate performance proposed enhances detection ability raises level art, music...

10.1155/2021/9993019 article EN Mobile Information Systems 2021-04-28

Electrical power supply of data centers constitutes major operational costs. In this paper, we focus on providing the supplying energy to exact match consumption demands by using properties a digital grid. Different from present grid, where is supplied continuously and in amounts satisfy large demands, grid supplies form packets upon request. Energy are specifically addressed one, or multiple servers no others, they carry amount that has been requested. To evaluate level supply, model time...

10.1109/greencom.2012.94 article EN IEEE International Conference on Green Computing and Communications 2012-11-01

1Finding persistent and inactive activity periods is very helpful in practice, for example to detect intrusion activities. Most of the literature focuses on finding flows or frequent flows. No previous work able find infrequent In this paper, we propose a novel sketch data structure, PISketch, real time. The key idea PISketch define weight its Reward Penalty System each flow combine balance information both persistency infrequency, keep high-weighted limited space through strategy. We...

10.1145/3528082.3544834 article EN 2022-08-15

The relationship between brain abnormalities and phenotypic characteristics in cervical dystonia (CD) patients has not been fully established, little is known about the neuroplastic changes induced by botulinum toxin type A (BoNT-A) treatment.Ninety-two CD presenting with rotational torticollis 45 healthy controls from our database were retrospectively screened. After clinical assessment, 92 underwent baseline magnetic resonance imaging (MRI) followed a single-dose injection of BoNT-A. Four...

10.1111/ene.14695 article EN European Journal of Neurology 2020-12-22

This demo delivers a novel retrieval system which meets users' multi-dimensional requirements in clothing image search. In this system, users are able to use both and keywords as query inputs. We employ the color, texture, shape attributes additional descriptors further refine requirements. propose Hybrid Topic (HT) model, probabilistic network integrating multi-channel into unified framework, learn intricate semantic representation of above. The proposed model provides an effective...

10.1145/2964284.2973834 article EN Proceedings of the 30th ACM International Conference on Multimedia 2016-09-29

Although single-photon emission computed tomography (SPECT/CT) could help to predetermine dystonic muscles in patients with cervical dystonia (CD), its efficacy aiding botulinum toxin injection is undetermined. This randomized, double-blinded study aimed assess the of SPECT/CT aided CD.Patients were randomized into group (candidate selected by and clinical evaluation) or control (clinical evaluation). Follow-ups done at two weeks (T1), one (T2), three (T3) six months (T4). The primary...

10.1016/j.parkreldis.2021.09.002 article EN cc-by-nc-nd Parkinsonism & Related Disorders 2021-09-09

Current data centers often employ SDNs (Software-Defined Networks) that are layered in most cases. However, information overwhelming has been a limitation to SDN deployment. We present management model for center networks. In this approach, regional networks on lower layers will be aggregated and viewed as single switches upper layers. Management divided into three parts, which can seen by network managers, controllers tenants, respectively.

10.1109/infcomw.2014.6849181 article EN 2014-04-01

Sentiment-controlled text generation aims to generate texts according the given sentiment. However, most of existing studies focus only on document- or sentence-level sentiment control, leaving a gap for finer-grained control over content generated results. Fine-grained allows review express different opinions toward multiple aspects. Some previous works attempted reviews conditioned aspect-level sentiments, but they usually suffer from low adaptability and lack an annotated dataset. To...

10.3390/app13010264 article EN cc-by Applied Sciences 2022-12-26

In this paper, we present a new method based on novel 3D cross model for detecting human eye blinks. Firstly, an initial frontal face is given to constructe the model, which represents head. by using of optical flow, can track head motion in real-time without effects self-occlusion and large motion. According horizontal information position eyes be located dynamically accurately each frame. number pixels whose gray values less than certain threshold calculated when open close respectively....

10.1109/iscid.2012.181 article EN 2012-10-01

This paper presents a new method for 3D head pose recovery from video by using novel cross model to track the motion. Given an initial frontal face of head, biologically-plausible is constructed represent which robust lighting and facial expression changes. By updating templates dynamically, effects self-occlusion, large motion gradual illumination changes can be diminished. When hidden or moves out scenes, reinitialized automatically. Experimental results show that efficiently recover...

10.1109/ihmsc.2012.111 article EN 2012-08-01

Large Language Models (LLMs) have significantly advanced the field of information retrieval, particularly for reranking. Listwise LLM rerankers showcased superior performance and generalizability compared to existing supervised approaches. However, conventional listwise reranking methods lack efficiency as they provide ranking output in form a generated ordered sequence candidate passage identifiers. Further, are trained with typical language modeling objective, which treats all errors...

10.48550/arxiv.2406.15657 preprint EN arXiv (Cornell University) 2024-06-21

10.18653/v1/2024.emnlp-main.491 article EN Proceedings of the 2021 Conference on Empirical Methods in Natural Language Processing 2024-01-01

In the AIOps (Artificial Intelligence for IT Operations) era, accurately forecasting system states is crucial. microservices systems, this task encounters challenge of dynamic and complex spatio-temporal relationships among microservice instances, primarily due to deployments, diverse call paths, cascading effects instances. Current time-series methods, which focus mainly on intrinsic patterns, are insufficient in environments where spatial critical. Similarly, graph approaches often neglect...

10.48550/arxiv.2408.07894 preprint EN arXiv (Cornell University) 2024-08-14

This paper studies the throughput optimization for buffer-limited mobile ad hoc networks (MANETs) based on resource allocation policies. Specifically, we consider a practical MANET configuration where total limited buffer space of network node can be flexibly allocated to its source and relay buffer, two-hop scheme with control parameter α is adopted packet delivery. For such any specific setting, i.e., are fixed, first develop theoretical framework characterize dynamics derive exact...

10.1109/nana.2017.10 article EN 2022 International Conference on Networking and Network Applications (NaNA) 2017-10-01
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