Search Results for author: Zhongyi Hu

Found 11 papers, 0 papers with code

A fast score-based search algorithm for maximal ancestral graphs using entropy

no code implementations7 Feb 2024 Zhongyi Hu, Robin Evans

\emph{Maximal ancestral graph} (MAGs) is a class of graphical model that extend the famous \emph{directed acyclic graph} in the presence of latent confounders.

UNet#: A UNet-like Redesigning Skip Connections for Medical Image Segmentation

no code implementations24 May 2022 Ledan Qian, Xiao Zhou, Yi Li, Zhongyi Hu

As an essential prerequisite for developing a medical intelligent assistant system, medical image segmentation has received extensive research and concentration from the neural network community.

Image Segmentation Instance Segmentation +3

Malicious Web Domain Identification using Online Credibility and Performance Data by Considering the Class Imbalance Issue

no code implementations19 Oct 2018 Zhongyi Hu, Raymond Chiong, Ilung Pranata, Yukun Bao, Yuqing Lin

Practical implications: This study not only inspires the practical use of online credibility and performance data for identifying malicious web domains, but also provides an effective resampling approach for handling the class imbal-ance issue in the area of malicious web domain identification.

BIG-bench Machine Learning

Interval Forecasting of Electricity Demand: A Novel Bivariate EMD-based Support Vector Regression Modeling Framework

no code implementations15 Jun 2014 Tao Xiong, Yukun Bao, Zhongyi Hu

Highly accurate interval forecasting of electricity demand is fundamental to the success of reducing the risk when making power system planning and operational decisions by providing a range rather than point estimation.

regression Time Series +1

Multi-Step-Ahead Time Series Prediction using Multiple-Output Support Vector Regression

no code implementations11 Jan 2014 Yukun Bao, Tao Xiong, Zhongyi Hu

As a well-known intelligent algorithm, the standard formulation of Support Vector Regression (SVR) could be taken for multi-step-ahead time series prediction, only relying either on iterated strategy or direct strategy.

regression Time Series +1

Does Restraining End Effect Matter in EMD-Based Modeling Framework for Time Series Prediction? Some Experimental Evidences

no code implementations11 Jan 2014 Tao Xiong, Yukun Bao, Zhongyi Hu

Following the "decomposition-and-ensemble" principle, the empirical mode decomposition (EMD)-based modeling framework has been widely used as a promising alternative for nonlinear and nonstationary time series modeling and prediction.

Time Series Time Series Prediction

A PSO and Pattern Search based Memetic Algorithm for SVMs Parameters Optimization

no code implementations9 Jan 2014 Yukun Bao, Zhongyi Hu, Tao Xiong

Addressing the issue of SVMs parameters optimization, this study proposes an efficient memetic algorithm based on Particle Swarm Optimization algorithm (PSO) and Pattern Search (PS).

Multiple-output support vector regression with a firefly algorithm for interval-valued stock price index forecasting

no code implementations9 Jan 2014 Tao Xiong, Yukun Bao, Zhongyi Hu

In terms of statistical criteria, we compare the out-of-sample forecasting using goodness-of-forecast measures and testing approaches.

Time Series Time Series Analysis

Beyond One-Step-Ahead Forecasting: Evaluation of Alternative Multi-Step-Ahead Forecasting Models for Crude Oil Prices

no code implementations8 Jan 2014 Tao Xiong, Yukun Bao, Zhongyi Hu

An accurate prediction of crude oil prices over long future horizons is challenging and of great interest to governments, enterprises, and investors.

PSO-MISMO Modeling Strategy for Multi-Step-Ahead Time Series Prediction

no code implementations31 Dec 2013 Yukun Bao, Tao Xiong, Zhongyi Hu

Multi-step-ahead time series prediction is one of the most challenging research topics in the field of time series modeling and prediction, and is continually under research.

Time Series Time Series Prediction

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