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On Density-Based Data Streams Clustering Algorithms: A Survey
Springer Science and Business Media LLC - Tập 29 Số 1 - Trang 116-141 - 2014
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 know...... hiện toàn bộ
Shapelet Based Two-Step Time Series Positive and Unlabeled Learning
Springer Science and Business Media LLC - Tập 38 - Trang 1387-1402 - 2023
In the last decade, there has been significant progress in time series classification. However, in real-world industrial settings, it is expensive and difficult to obtain high-quality labeled data. Therefore, the positive and unlabeled learning (PU-learning) problem has become more and more popular recently. The current PU-learning approaches of the time series data suffer from low accuracy due to...... hiện toàn bộ
Managing Data-Objects in Dynamically Reconfigurable Caches
Springer Science and Business Media LLC - Tập 25 - Trang 232-245 - 2010
The widening gap between processor and memory speeds makes cache an important issue in the computer system design. Compared with work set of programs, cache resource is often rare. Therefore, it is very important for a computer system to use cache efficiently. Toward a dynamically reconfigurable cache proposed recently, DOOC (Data-Object Oriented Cache), this paper proposes a quantitative framewor...... hiện toàn bộ
An Experimental Study of Text Representation Methods for Cross-Site Purchase Preference Prediction Using the Social Text Data
Springer Science and Business Media LLC - - 2017
A radiosity solution for curved surface environments
Springer Science and Business Media LLC - Tập 12 - Trang 414-424 - 1997
Radiosity has been a popular method for photorealistic image generation. But the determination of form factors between curved patches is the most difficult and time consuming procedure, and also the errors caused by approximating source patch’s radiosity with average values are obvious. In this paper, a radiosity algorithm for rendering curved surfaces represented by parameters is described. The c...... hiện toàn bộ
Continuous Outlier Monitoring on Uncertain Data Streams
Springer Science and Business Media LLC - Tập 29 - Trang 436-448 - 2014
Outlier detection on data streams is an important task in data mining. The challenges become even larger when considering uncertain data. This paper studies the problem of outlier detection on uncertain data streams. We propose Continuous Uncertain Outlier Detection (CUOD), which can quickly determine the nature of the uncertain elements by pruning to improve the efficiency. Furthermore, we propos...... hiện toàn bộ
Multi-Scaling Sampling: An Adaptive Sampling Method for Discovering Approximate Association Rules
Springer Science and Business Media LLC - - 2005
Approximation Algorithm Based on Chain Implication for Constrained Minimum Vertex Covers in Bipartite Graphs
Springer Science and Business Media LLC - Tập 23 - Trang 763-768 - 2008
The constrained minimum vertex cover problem on bipartite graphs (the Min-CVCB problem) is an important NP-complete problem. This paper presents a polynomial time approximation algorithm for the problem based on the technique of chain implication. For any given constant ɛ > 0, if an instance of the Min-CVCB problem has a minimum vertex cover of size (k
u
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Shape grammars and shape rules
Springer Science and Business Media LLC - Tập 2 - Trang 124-132 - 1987
How to generate various graphics and how to produce patterns automatically according to the ideas, requirements and rules of the people (experts), are quite important problems in the computer aided design (CAD) and design automation (DA). This paper presents an approach, using shape grammars, on the basis of shape rules to design pictures, which is a preliminary practice of solving the problems ar...... hiện toàn bộ
Tổng số: 1,957
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