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Knowledge discovery of tourist subjective data in smartphone-based participatory sensing system by interactive growing hierarchical SOM and C4.5 基于交互式增长层次SOM和C4.5的智能手机参与式感知系统中游客主观数据知识发现
Pub Date : 2012-11-01 DOI: 10.1504/IJKWI.2012.050283
T. Ichimura, Shin Kamada, Kosuke Kato
A self organising map (SOM) is trained using unsupervised learning to produce a two-dimensional discretised representation of input space of the training cases. Growing hierarchical SOM is an architecture which grows both in a hierarchical way representing the structure of data distribution and in a horizontal way representing the size of each individual maps. The control method of the growing degree by pruning off the redundant branch of hierarchy in SOM has been proposed and the criteria were designed by the adjustment of parameter settings according to a quantisation error and the size of map. Moreover, the interface tool for the proposed method called the interactive GHSOM has been developed. The interactive GHSOM can determine the knowledge of classification from the hierarchy of structure. A smartphone-based tourist participatory sensing system has been developed in Android smartphone. The system can collect tourist subjective data which includes jpeg files with GPS, geographic location name, the evaluation, and comments written in natural language at sightseeing spot. In this paper, we classified the subjective data by interactive GHSOM and extracted the rules by C4.5. After the interactive GHSOM implementation, the structure of the extracted rules became a lucid expression.
使用无监督学习训练自组织映射(SOM),生成训练用例输入空间的二维离散表示。增长分层SOM是一种体系结构,它既以表示数据分布结构的分层方式增长,又以表示每个单独地图大小的水平方式增长。提出了SOM中通过修剪冗余分支来控制生长度的方法,并根据量化误差和地图大小调整参数设置来设计生长度控制准则。此外,还开发了用于该方法的接口工具,称为交互式GHSOM。交互式GHSOM可以从结构层次中确定分类知识。在Android智能手机上开发了基于智能手机的游客参与式感知系统。该系统可以收集游客的主观数据,包括带有GPS、地理位置名称的jpeg文件、景点评价和用自然语言写的评论。本文采用交互式GHSOM对主观数据进行分类,并采用C4.5提取规则。在交互式GHSOM实现后,所提取的规则结构成为一个清晰的表达。
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引用次数: 5
Parallel processing for stepwise generalisation method on multi-core PC cluster 多核PC集群上逐步泛化方法的并行处理
Pub Date : 2012-11-01 DOI: 10.1504/IJKWI.2012.050282
Shinpei Yagi, Keiichi Tamura, H. Kitakami
An approximate query, which is an approximate pattern matching in sequence databases, is one of the most important techniques for many different areas, such as computational biology, text mining, web intelligence and pattern recognition; it returns many similar sub-sequences. In this paper, we refer to a set of such similar sub-sequences as a mismatch cluster. To support users who execute an approximate query on a sequence database to find the regularities of approximate patterns that similar to the query pattern, we have developed the stepwise generalisation method that extracts a reduced expression, called a minimum generalised set, from a mismatch cluster. This paper proposes a novel parallelisation model with a hierarchical task pool for the parallel processing of the stepwise generalisation method on a multi-core PC cluster. To manage tasks efficiently on multi-core CPUs, the proposed model uses the hierarchical task pool and an efficient hierarchical dynamic load balancing technique. We evaluate the proposed method using real protein sequences on an actual multi-core PC cluster. Experimental results confirm that the proposed method performs well on multi-core CPUs and on a multi-core PC cluster.
近似查询是序列数据库中的一种近似模式匹配,是计算生物学、文本挖掘、web智能和模式识别等领域的重要技术之一;它返回许多相似的子序列。在本文中,我们将这些相似子序列的集合称为不匹配聚类。为了支持在序列数据库上执行近似查询的用户找到与查询模式相似的近似模式的规律,我们开发了逐步泛化方法,该方法从不匹配集群中提取一个简化表达式,称为最小泛化集。针对逐步泛化方法在多核PC集群上的并行处理问题,提出了一种基于分层任务池的并行化模型。为了在多核cpu上高效地管理任务,该模型采用了分层任务池和高效的分层动态负载平衡技术。我们在一个实际的多核PC集群上使用真实的蛋白质序列来评估所提出的方法。实验结果证实了该方法在多核cpu和多核PC集群上的良好性能。
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引用次数: 0
Knowledge acquisition from many-attribute data by genetic programming with clustered terminal symbols 基于聚类终端符号的遗传规划多属性数据知识获取
Pub Date : 2012-11-01 DOI: 10.1504/IJKWI.2012.050286
Akira Hara, Haruko Tanaka, T. Ichimura, T. Takahama
Rule extraction from database by soft computing methods is important for knowledge acquisition. For example, knowledge from the web pages can be useful for information retrieval. When genetic programming (GP) is applied to rule extraction from a database, the attributes of data are often used for the terminal symbols. However, the real databases have a large number of attributes. Therefore, the size of the terminal set increases and the search space becomes vast. For improving the search performance, we propose new methods for dealing with the large-scale terminal set. In the methods, the terminal symbols are clustered based on the similarities of the attributes. In the beginning of search, by using the clusters for terminals instead of original attributes, the number of terminal symbols can be reduced. Therefore, the search space can be reduced. In the latter stage of search, by using the original attributes for terminal symbols, the local search is performed. We applied our proposed methods to two many-attribute datasets, the classification of molecules as a benchmark problem and the page rank learning for information retrieval. By comparison with the conventional GP, the proposed methods showed the faster evolutional speed and extracted more accurate rules.
利用软计算方法从数据库中提取规则是知识获取的重要内容。例如,来自网页的知识可以用于信息检索。将遗传规划(GP)应用于数据库规则提取时,通常使用数据的属性作为终端符号。然而,真实的数据库有大量的属性。因此,终端集的规模增大,搜索空间变得巨大。为了提高搜索性能,我们提出了处理大规模终端集的新方法。在这些方法中,基于属性的相似性对终端符号进行聚类。在搜索开始时,通过使用终端的聚类来代替原始属性,可以减少终端符号的数量。因此,可以减少搜索空间。在搜索的后期,利用终端符号的原始属性进行局部搜索。我们将所提出的方法应用于两个多属性数据集,一个是作为基准问题的分子分类,另一个是用于信息检索的页面排名学习。与传统的遗传算法相比,该方法的进化速度更快,提取的规则更准确。
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引用次数: 0
Machi-POS - point of sales system for restaurant district 机器- pos -餐厅区销售系统
Pub Date : 2012-11-01 DOI: 10.1504/IJKWI.2012.050284
S. Matsumoto, T. Kashima, T. Matsui, Kazuaki Nakamura, T. Matsutomi
The authors have participated in an activity for town development named 'Machi-POS' which is a research project to develop a service by totally supporting management of independent small restaurants within a certain area. As a part effort of Machi-POS, this study firstly develops an inventory management system cooperating with POS system and web-based automatic menu order feature. The system will contribute to reduce the opportunity loss, and will make the improvement of service quality and sales possible at lower labour cost. The system also provides POS services cheaply and efficiently by using common devices. This study makes it available for two or more restaurants in restaurant district, and gives additional function to support safety and security of foods. The multiple-user capability enables restaurants to share inventory information to each other. Therefore, reducing disposal loss will be further promoted because overstock or shortage is adjustable between restaurants with Machi-POS.
笔者参加了“machine - pos”的城镇开发活动,这是一项研究项目,旨在开发一种服务,全面支持一定区域内的独立小餐馆的经营。作为machine -POS的一部分,本研究首先开发了一个与POS系统和基于web的自动菜单点单功能相配合的库存管理系统。该系统将有助于减少机会损失,并将以较低的劳动力成本改善服务质量和销售。该系统还通过使用普通设备,提供了廉价、高效的POS服务。本研究使其可用于餐饮区的两个或两个以上餐厅,并赋予额外的功能,以支持食品的安全和保障。多用户功能使餐厅能够彼此共享库存信息。因此,减少处置损失将进一步推动,因为库存过剩或短缺是可调整的餐厅之间的机器- pos。
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引用次数: 0
Assignment strategy selection for multi-car elevator group control using reinforcement learning 基于强化学习的多轿厢电梯群控分配策略选择
Pub Date : 2012-11-01 DOI: 10.1504/IJKWI.2012.050285
Taichi Uraji, Kenichi Takahashi
This paper discusses the group control of elevators in the web monitoring system for improving efficiency and saving energy; an efficient control method for multi-car elevator using reinforcement learning is proposed. In the method, the control agent selects the best strategy among three strategies, namely distance-strategy, passenger-strategy, and zone-strategy, according to traffic flow. The control agent takes the number of total passengers and the distance from the departure floor to the destination floor of a call into account. Through experiments, the performance of the proposed method is shown; the average service time of the proposed method is compared with the average service time for the cases where the car assignment is made by each of the three strategies.
本文论述了在网络监控系统中对电梯进行群控,以提高效率,节约能源;提出了一种基于强化学习的多轿厢电梯控制方法。在该方法中,控制代理根据交通流量,从距离策略、乘客策略和区域策略三种策略中选择最优策略。控制代理将总乘客人数和从出发层到目的地层的距离考虑在内。通过实验验证了该方法的有效性;将所提方法的平均使用时间与三种分配策略下的平均使用时间进行比较。
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引用次数: 2
Review-based recommendation of attractive sentences in a novel for effective browsing 基于评论的推荐小说中有吸引力的句子,以有效浏览
Pub Date : 2012-07-01 DOI: 10.1504/IJKWI.2012.048164
Soichi Murai, Taketoshi Ushiama
Recently, the electronic book (e-book) market is growing rapidly and people have been able to choose e-books that they would like to read from a large amount of e-books. Therefore, techniques for finding efficiently one or more sufficient books that have something worth reading from vast numbers of e-books are demanded. In order to support a user to select books, many techniques for searching and recommending books have been proposed. However, the user would have to decide whether each book in candidates is worth reading. In this paper, we introduce a method for supporting a user to decide whether he/she read an e-book novel or not effectively. Our method recommends a user sentences that would attract and/or interest the user in an e-book novel. In our method, firstly, the attractiveness of each term in a novel is calculated based on reviews about the novel on the web. Then, the attractiveness of each sentence in the novel is calculated based on the attractiveness of the terms. This paper shows the experimental results of our method and discusses its effectiveness.
最近,电子图书(电子书)市场发展迅速,人们可以从大量的电子书中选择自己想读的电子书。因此,从大量的电子书中有效地找到一本或多本值得阅读的书的技术是必要的。为了支持用户选择图书,已经提出了许多搜索和推荐图书的技术。然而,用户必须决定候选书中的每一本书是否值得一读。在本文中,我们介绍了一种支持用户有效决定他/她是否阅读电子书小说的方法。我们的方法向用户推荐在电子书小说中能够吸引和/或引起用户兴趣的句子。在我们的方法中,首先,根据网络上对小说的评论计算小说中每个术语的吸引力。然后,根据术语的吸引力计算小说中每个句子的吸引力。本文给出了该方法的实验结果,并对其有效性进行了讨论。
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引用次数: 3
Back-review support system for presentation rehearsal review 用于演示排练审查的后台审查支持系统
Pub Date : 2012-07-01 DOI: 10.1504/IJKWI.2012.048163
Ryo Okamoto, A. Kashihara
The purpose of presentation rehearsal is to enable a presenter to be aware of insufficiency or incompleteness of his/her knowledge and refining the knowledge. In our study, we have proposed a framework of the presentation rehearsal support system to assist the peers to review the presentation in the rehearsal, and have developed a prototype system. During the presentation rehearsal, the system accumulates a lot of review comments from the peers to represent and organise them, which is used for the presenter to revise his/her presentation contents. In this paper, we propose the 'back-review' method for utilisation of the review comments for the revision of the presentation slides.
演讲彩排的目的是让演讲者意识到自己知识的不足或不完整,并完善这些知识。在我们的研究中,我们提出了一个演示排练支持系统的框架,以帮助同行在排练中审查演示,并开发了一个原型系统。在演示彩排过程中,系统会积累大量来自同行的评审意见,并进行代表和整理,供演示者修改演示内容。在本文中,我们提出了“反向审查”的方法,以利用审查意见来修改演示幻灯片。
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引用次数: 1
Chaotic oscillations in user-centric cognitive radio networks and their control 以用户为中心的认知无线电网络中的混沌振荡及其控制
Pub Date : 2012-07-01 DOI: 10.1504/IJKWI.2012.048165
Yuki Nonaka, M. Hasegawa
In the cognitive radio networks, spectrum resources are dynamically shared among the users for radio resource usage optimisation. However, depending on the distributed decision-making algorithms of the spectrum sharing procedure, undesirable chaotic switching may occur in the network. For chaotic non-linear systems, the chaos control theory has been proposed and applied to a wide variety of non-linear systems to stabilise such systems. In this paper, the delay feedback method for chaos control is applied to the chaotic phenomena in the cognitive radio networks. We show that our method can stabilise the chaotic oscillations in the user-centric cognitive radio networks. By comparisons with conventional parameter tuning methods, we confirm that our control approach is more efficient and faster to stabilise the cognitive radio systems.
在认知无线电网络中,频谱资源在用户之间动态共享,以优化无线电资源的使用。然而,由于频谱共享过程的分布式决策算法,可能会在网络中出现不希望出现的混沌切换。对于混沌非线性系统,混沌控制理论已经被提出并应用于各种各样的非线性系统以使其稳定。本文将混沌控制的延迟反馈方法应用于认知无线电网络中的混沌现象。结果表明,该方法可以稳定以用户为中心的认知无线网络中的混沌振荡。通过与传统参数调谐方法的比较,我们证实了我们的控制方法更有效,更快地稳定了认知无线电系统。
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引用次数: 0
Mistake detection method in Chinese-Japanese translation for Japanese learning support 中文翻译中的错误检测方法为日语学习提供支持
Pub Date : 2012-07-01 DOI: 10.1504/IJKWI.2012.048162
Xicen Zhang, Yuki Hayashi, T. Kojiri, Toyohide Watanabe
When Chinese students study Japanese, they sometimes find it difficult to understand the grammar of Japanese correctly because Chinese and Japanese use the same Chinese characters in a different way. Our research focuses on the students' exercises of translating Chinese sentences into Japanese, and enables students to acquire correct knowledge based on translated sentences. For this objective, our Chinese-Japanese translation process is divided into three steps: translation of words, ordering of words, and addition of functional expressions to complete the sentence. The system compares translated sentences written by students with the correct answer preset in the system and specifies the step in which students might be mistaken. Then, the system gives a result of evaluating the translated sentence with the explanation of incorrect translation. Since the usage of Japanese functional expressions is the most difficult for the Chinese students translating a sentence, our system supports students learning Japanese functional expressions by considering the factors of the mistaken functional expressions. According to the mistake information, the system selects another question from the question database, which has the same factor as the mistaken functional expression. Experimental results showed that our system was effective in detecting the mistakes, especially mistakes of words and Japanese functional expressions.
当中国学生学习日语时,他们有时会发现很难正确理解日语的语法,因为中国人和日本人用不同的方式使用相同的汉字。我们的研究重点是学生将汉语句子翻译成日语的练习,让学生在翻译的句子中获得正确的知识。为此,我们的汉日翻译过程分为三个步骤:翻译单词,排序单词,添加功能表达以完成句子。该系统将学生写的翻译句子与系统预设的正确答案进行比较,并指定学生可能出错的步骤。然后,系统给出翻译句子的评价结果,并给出翻译错误的解释。由于日语功能表达的使用是中国学生翻译句子最难的,所以我们的系统通过考虑功能表达错误的因素来支持学生学习日语功能表达。根据错误信息,系统从题库中选择与错误函数表达式具有相同因素的另一个问题。实验结果表明,该系统能够有效地检测出错误,特别是单词和日语功能短语的错误。
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引用次数: 0
An evaluation of provenance-based near-duplicates detection 基于来源的近重复检测的评价
Pub Date : 2011-12-01 DOI: 10.1504/IJKWI.2011.044122
Y. S. Mudhasir, J. Deepika, S. Sendhilkumar
Any existing search engine suffers the problem of redundancy in their search results. Detecting and eliminating such redundancy (near-duplicates) is one thrust area of research conducted widely by many search engine researchers. Provenance-based factors would improve the web search in view of providing beneficial quality content to the user. For users, many factors that affect personalisation may prove to be useful in determining the quality and trust in web documents. Also provenance information is helpful in filtering near duplicates from search results based on 6W factors. Hence this paper is aimed towards developing a web search system using provenance-based technique of near-duplicates detection and elimination. This system incorporates a personalised crawler (focused crawler) for computing author credentials which contributes to the trustworthiness of a web document. Finally, the results of the proposed system are compared with existing algorithms using a test bed of web documents.
任何现有的搜索引擎都存在搜索结果冗余的问题。检测和消除这种冗余(近重复)是许多搜索引擎研究人员广泛进行的一个重点研究领域。基于来源的因素将改善网络搜索,为用户提供有益的优质内容。对于用户来说,许多影响个性化的因素可能在决定网络文档的质量和信任方面是有用的。此外,来源信息有助于根据6W因素从搜索结果中过滤接近重复的内容。因此,本文旨在开发一个基于来源的近重复检测和消除技术的网络搜索系统。该系统集成了一个个性化的爬虫(集中爬虫),用于计算作者凭证,这有助于网络文档的可信度。最后,通过一个web文档测试平台,将所提系统的结果与现有算法进行了比较。
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引用次数: 0
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Int. J. Knowl. Web Intell.
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