2012 Eighth Latin American Web Congress最新文献

Arc-Community Detection via Triangular Random Walks 通过三角形随机漫步的弧社区检测

2012 Eighth Latin American Web Congress Pub Date : 2012-10-25 DOI: 10.1109/LA-WEB.2012.19

P. Boldi, M. Rosa

引用次数: 10

A Genetic Niching Algorithm with Self-Adaptating Operator Rates for Document Clustering 基于自适应算子率的遗传小生境文档聚类算法

2012 Eighth Latin American Web Congress Pub Date : 2012-10-25 DOI: 10.1109/LA-WEB.2012.22

Elizabeth León Guzman, Jonatan Gómez, O. Nasraoui

{"title":"A Genetic Niching Algorithm with Self-Adaptating Operator Rates for Document Clustering","authors":"Elizabeth León Guzman, Jonatan Gómez, O. Nasraoui","doi":"10.1109/LA-WEB.2012.22","DOIUrl":"https://doi.org/10.1109/LA-WEB.2012.22","url":null,"abstract":"We propose a Genetic algorithm for document clustering, where an evolutionary multimodal optimization algorithm evolves candidate cluster representative solutions to search for dense regions in the sparse high dimensional vector space of text documents. The evolution affects not only the document cluster representatives but also the genetic operator rates which are evolved simultaneously with the document cluster representative solutions. The evolving population consists of candidate document cluster representatives that are encoded in the form of a sparse index and sparse index/frequency variable length vectors. In addition, specialized sparse genetic operators are defined for this special representation. The proposed specialized genetic operators achieve different degrees of exploitation and exploration in searching for the optimal document cluster prototypes, in particular the most specialized operator for the document clustering problem is the Sparse Top-K-Addition operator, which can be seen as an incentive towards a more aggressive exploitation of the local context in a small subset of documents, whereas the simple Sparse Real Addition operator works more in an exploratory manner. As shown in our experiments on two well-known document data sets, taking into account associated terms within a local context adds the benefit of an explicit latent semantic consideration in the search for optimal term lists to describe the cluster prototypes.","PeriodicalId":333389,"journal":{"name":"2012 Eighth Latin American Web Congress","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129378036","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

A Visual Tool for Querying and Exploring XML Data 查询和探索XML数据的可视化工具

2012 Eighth Latin American Web Congress Pub Date : 2012-10-25 DOI: 10.1109/LA-WEB.2012.20

R. Baeza-Yates, C. Barrera, Valeria Herskovic

引用次数: 1

Hyperlink of Men 男人的超链接

2012 Eighth Latin American Web Congress Pub Date : 2012-10-25 DOI: 10.1109/LA-WEB.2012.12

Ricardo Kawase, Patrick Siehndel, E. Herder, W. Nejdl

引用次数: 1

Characterizing a Network of SPAMs Recipients 垃圾邮件接收者网络的特征

2012 Eighth Latin American Web Congress Pub Date : 2012-10-25 DOI: 10.1109/LA-WEB.2012.14

Thaína Amélia de Oliveira Alves, H. T. Marques-Neto

{"title":"Characterizing a Network of SPAMs Recipients","authors":"Thaína Amélia de Oliveira Alves, H. T. Marques-Neto","doi":"10.1109/LA-WEB.2012.14","DOIUrl":"https://doi.org/10.1109/LA-WEB.2012.14","url":null,"abstract":"The email exchange among people is one of the most common communication activities done in the Internet. Consequently, this produces a very large volume of electronic messages over the network, which needs to be well managed by email service providers. Besides, many of these emails are unwanted messages and even malicious. Thus, filtering unwanted mail and ensuring the security of users' mailboxes should be considered as high priority in the set of management tasks performed by email providers. This paper characterizes one network formed from a real dataset of received spams by users of a corporative email provider, which were identified, blocked and registered by a spam filter. The results show that some typical metrics of complex networks such as popularity and connectivity could be applied for improving the efficiency of the identification of email addresses used by spammers and also the email accounts which receive a huge number of unwanted and/or malicious messages. We observed that few of these email addresses have high popularity and high connectivity in the network. Moreover, this work also shows that if the users who receive a large number of spams are renamed or removed, i.e. ignored, the amount of spams could decrease substantially. This points out that the monitoring of a small number of users (or few nodes of a complex network) could positively affect the management of email providers. By knowing additional characteristics about recipients of a large amount of spams and the popularity of email addresses used by spammers, we could improve some techniques used to block unwanted and malicious messages on the network of the service provider.","PeriodicalId":333389,"journal":{"name":"2012 Eighth Latin American Web Congress","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129652007","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Clustering Heterogeneous Data Sets 异构数据集聚类

2012 Eighth Latin American Web Congress Pub Date : 2012-10-25 DOI: 10.1109/LA-WEB.2012.27

A. Abdullin, O. Nasraoui

引用次数: 14

Incorporating 3D Sound in Different Virtual Worlds 在不同的虚拟世界中融入3D声音

2012 Eighth Latin American Web Congress Pub Date : 2012-10-25 DOI: 10.1109/LA-WEB.2012.17

Marva Angélica Mora Lumbreras, L. Flores-Pulido, B. González-Contreras, Edgar Alberto Portilla-Flores

引用次数: 1

Characterizing Landing Pages in Sponsored Search 在赞助搜索中描述登陆页的特征

2012 Eighth Latin American Web Congress Pub Date : 2012-10-25 DOI: 10.1109/LA-WEB.2012.10

Haibin Liu, Woo-Cheol Kim, Dongwon Lee

引用次数: 4

Improving the Efficiency of a Genre-Aware Approach to Focused Crawling Based on Link Context 提高基于链接上下文的聚焦爬行类型感知方法的效率

2012 Eighth Latin American Web Congress Pub Date : 2012-10-25 DOI: 10.1109/LA-WEB.2012.24

Vítor Mangaravite, G. T. Assis, Anderson A. Ferreira

引用次数: 10

Multi-source Conflating Index Construction for Local Search in a Low-Coverage Country 低覆盖率国家本地搜索的多源合并索引构建

2012 Eighth Latin American Web Congress Pub Date : 2012-10-25 DOI: 10.1109/LA-WEB.2012.21

Dirk Ahlers

引用次数: 4