4篇
您的检索式：作者名="Teh Ying Wah"
|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | On Density-Based Data Streams Clustering Algorithms: A Survey显示文摘Clustering data streams has drawn lots of attention in the last few years due to their ever-growing presence. Data streams put additional challenges on clustering such as limited time and memory and one pass clustering. Furthermore, discovering clusters with arbitrary shapes is very important in data stream applications. Data streams are infinite and evolving over time, and we do not have any knowledge about the number of clusters. In a data stream environment due to various factors, some noise appears occasionally. Density-based method is a remarkable class in clustering data streams, which has the ability to discover arbitrary shape clusters and to detect noise. Furthermore, it does not need the number of clusters in advance. Due to data stream characteristics, the traditional density-based clustering is not applicable. Recently, a lot of density-based clustering algorithms are extended for data streams. The main idea in these algorithms is using densitybased methods in the clustering process and at the same time overcoming the constraints, which are put out by data stream's nature. The purpose of this paper is to shed light on some algorithms in the literature on density-based clustering over data streams. We not only summarize the main density-based clustering algorithms on data streams, discuss their uniqueness and limitations, but also explain how they address the challenges in clustering data streams. Moreover, we investigate the evaluation metrics used in validating cluster quality and measuring algorithms' performance. It is hoped that this survey will serve as a steppingstone for researchers studying data streams clustering, particularly density-based algorithms. | Amineh Amini Teh Ying Wah Hadi Saboohi | 2014 | Journal of Computer Science & Technology2014，29，1： | 9 |
| 2 | Stock market co-move- ment assessment using a three-phase clustering method 显示文摘 | Saeed Aghabozorgi Ying Wah Teh | 2014 | Expert Systems with Applications2014，41，4： | 1 |
| 3 | Text mining for market prediction: A systematic review显示文摘 | Khadjeh Nassirtoussi Arman Aghabozorgi Saeed Ying Wah Teh | 2014 | Expert Systems with Applications2014，，1： | 1 |
| 4 | Effect of Microwave Power and Clamping Pressure on the Microwave Welding of Polypropylene Using Silicon Carbide Nanowhiskers as Microwave Susceptor显示文摘Due to their excellent dielectric properties and the rapid response to microwave irradiation,silicon carbide nanowhiskers(SiCNWs)were employed as microwave susceptor in this study to absorb microwave and locally melt the surrounding polypropylene(PP)substrates for the joining of PP substrates.Complete welded joint is formed after the melted PP was cooled and resolidified.Other than microwave susceptor,SiCNWs also acted as the nanofillers in strengthening the welded joint through the formation of SiCNWs reinforced PP nanocomposite at the interface of PP substrates.Besides,the effect of microwave power on the microwave welding of PP substrates using SiCNWs as susceptor was studied and reported.It was found that the tensile strength and modulus of elasticity of the welded joint improved as microwave power increased.However,it deteriorates the flexibility of the welded joint as high stiffness SiCNWs were incorporated deeper into the PP matrix which restricted the PP chain mobility.Aside from microwave power,clamping pressure is also critical in determining the mechanical properties of a welded joint.When compared to unclamped welded joint,the tensile strength,modulus of elasticity and flexibility of welded joint subjected to clamping pressure improved drastically.Moreover,the tensile strength of welded joint increased when the clamping pressure was increased from P1 to P3,but decreased when the clamping pressure was further increased to P4 due to the occurrence of flashing at welded joint.The formation mechanism of SiCNWs reinforced PP welded joint was also proposed in this study.Compared to conventional welding,this welding process is easy,straightforward and is able to produce welded joint with outstanding mechanical properties via precise controlling of the processing parameters.Thus,microwave welding is thought to offer an option for the joining of thermoplastics and other applications. | Phey Yee Foong Chun Hong Voon Bee Ying Lim Pei Leng Teh Mohd Afendi Bin Rojan Nor Azizah Parmin Subash C.B.Gopinath Mohd Khairuddin Md Arshad Foo Wah Low Savisha Mahalingam Abreeza Manap Ruslinda A.Rahim Uda Hashim | 2022 | Chinese Journal of Polymer Science2022，40，11： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员