Ji Zhang

Multi-Station Passive Localization Based on CWLS Algorithm

2015 · Journal of Signal Processing

The classical Weighted Least Squares( WLS) algorithm would encounter the thresholding effect when the noise level was in high level. The Constrained Weighted Least Squares( CWLS) algorithm was applied to multi-station passive localization,the CWLS algorithms …

On Location Privacy in Fingerprinting-based Indoor Positioning System

2019

Due to the inadequacy of GPS signals in indoor spaces, Indoor Positioning Services (IPSs) have drawn great attention. The popular smartphone localization technique relies on a centralized server to achieve localization, allowing the server to …

Semi-Autoregressive Neural Machine Translation

2018 · arXiv (Cornell University)

Existing approaches to neural machine translation are typically autoregressive models. While these models attain state-of-the-art translation quality, they are suffering from low parallelizability and thus slow at decoding long sequences. In this paper, we propose …

Generating Persuasive Responses to Customer Reviews with Multi-Source Prior Knowledge in E-commerce

2022 · arXiv (Cornell University)

Customer reviews usually contain much information about one's online shopping experience. While positive reviews are beneficial to the stores, negative ones will largely influence consumers' decision and may lead to a decline in sales. Therefore, …

MGIMN: Multi-Grained Interactive Matching Network for Few-shot Text Classification

2022 · arXiv (Cornell University)

Text classification struggles to generalize to unseen classes with very few labeled text instances per class. In such a few-shot learning (FSL) setting, metric-based meta-learning approaches have shown promising results. Previous studies mainly aim to …

A Secured Movie Recommendation System using Decentralized Blockchain Network

2022

Recommender systems strongly affect a company’s profitability and regularly play a significant role in the success of companies’ sales policies. The companies are now collecting vast amounts of user information to make sure they can …

Evaluation and Analysis of Hallucination in Large Vision-Language Models

2023 · arXiv (Cornell University)

Large Vision-Language Models (LVLMs) have recently achieved remarkable success. However, LVLMs are still plagued by the hallucination problem, which limits the practicality in many scenarios. Hallucination refers to the information of LVLMs' responses that does …

A Blockchain‐Based Trustworthy Access Control Scheme for Medical Data Sharing

2024 · IET Information Security

Blockchain is commonly employed in access control to provide safe medical data exchange because of the characteristics of decentralization, nontamperability, and traceability. Patients share personal health data by granting access rights to users or medical …

Hal-Eval: A Universal and Fine-grained Hallucination Evaluation Framework for Large Vision Language Models

2024 · arXiv (Cornell University)

Large Vision Language Models exhibit remarkable capabilities but struggle with hallucinations inconsistencies between images and their descriptions. Previous hallucination evaluation studies on LVLMs have identified hallucinations in terms of objects, attributes, and relations but overlooked …