Zixuan Li

Feature selection based on improved transformed length particle swarm optimization algorithm

2023

Due to the fact that most feature selection methods based on particle swarm optimization are prone to falling into local optima, an improved transformed length particle swarm optimization algorithm (TLPSO-rr) is proposed for feature selection …

Array Equivalent Circuit Model and Experimental Analysis of Square CMUTs

2024 · IEEE Sensors Journal

The equivalent circuit is a commonly used tool for performance analysis during capacitive micromachined ultrasonic transducer (CMUT) design and optimization. In this study, the immersion equivalent circuit model of a square CMUT array is established …

UncertaintyRAG: Span-Level Uncertainty Enhanced Long-Context Modeling for Retrieval-Augmented Generation

2024 · arXiv (Cornell University)

We present UncertaintyRAG, a novel approach for long-context Retrieval-Augmented Generation (RAG) that utilizes Signal-to-Noise Ratio (SNR)-based span uncertainty to estimate similarity between text chunks. This span uncertainty enhances model calibration, improving robustness and mitigating semantic …