Search Results for author: Zann Koh

Found 4 papers, 0 papers with code

A Slow-Shifting Concerned Machine Learning Method for Short-term Traffic Flow Forecasting

no code implementations31 Mar 2023 Zann Koh, Yan Qin, Yong Liang Guan, Chau Yuen

However, a crucial challenge in traffic flow forecasting is the slow shifting in temporal peaks between daily and weekly cycles, resulting in the nonstationarity of the traffic flow signal and leading to difficulty in accurate forecasting.

Feature Engineering Scheduling

Clustering and Analysis of GPS Trajectory Data using Distance-based Features

no code implementations1 Dec 2022 Zann Koh, Yuren Zhou, Billy Pik Lik Lau, Ran Liu, Keng Hua Chong, Chau Yuen

We propose a new mobility metric, Daily Characteristic Distance, and use it to generate features for each user together with Origin-Destination matrix features.

Clustering

Multiple-Perspective Clustering of Passive Wi-Fi Sensing Trajectory Data

no code implementations22 Dec 2020 Zann Koh, Yuren Zhou, Billy Pik Lik Lau, Chau Yuen, Bige Tuncer, Keng Hua Chong

Information about the spatiotemporal flow of humans within an urban context has a wide plethora of applications.

Clustering

Understanding Crowd Behaviors in a Social Event by Passive WiFi Sensing and Data Mining

no code implementations5 Feb 2020 Yuren Zhou, Billy Pik Lik Lau, Zann Koh, Chau Yuen, Benny Kai Kiat Ng

In this paper, therefore, we propose a comprehensive data analysis framework to fully analyze the collected probe requests to extract three types of patterns related to crowd behaviors in a large social event, with the help of statistics, visualization, and unsupervised machine learning.

BIG-bench Machine Learning Clustering +1

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