2016 5th Brazilian Conference on Intelligent Systems (BRACIS)最新文献_第2页

Tabu Search with Ejection Chain for the Biobjective Adjacent-Only Quadratic Spanning Tree 双目标邻接唯一二次生成树的禁忌搜索

2016 5th Brazilian Conference on Intelligent Systems (BRACIS) Pub Date : 2016-10-01 DOI: 10.1109/BRACIS.2016.064

S. M. D. M. Maia, E. Goldbarg, Lucas D. M. dos S. Pinheiro, M. Goldbarg

引用次数: 1

A Method for Automatic Determination of the Feature Vector Size for Text Categorization 一种自动确定文本分类特征向量大小的方法

2016 5th Brazilian Conference on Intelligent Systems (BRACIS) Pub Date : 2016-10-01 DOI: 10.1109/BRACIS.2016.055

Rogerio C. P. Fragoso, Roberto H. W. Pinheiro, George D. C. Cavalcanti

引用次数: 5

Using the Causal Graph to Enhance Translations to Solve Contingent Planning Problems 利用因果图加强翻译以解决偶然计划问题

2016 5th Brazilian Conference on Intelligent Systems (BRACIS) Pub Date : 2016-10-01 DOI: 10.1109/BRACIS.2016.023

Ignasi Andrés, L. N. Barros

引用次数: 2

A Concept-Based Integer Linear Programming Approach for Single-Document Summarization 基于概念的单文档汇总整数线性规划方法

2016 5th Brazilian Conference on Intelligent Systems (BRACIS) Pub Date : 2016-10-01 DOI: 10.1109/BRACIS.2016.079

Hilário Oliveira, Rinaldo Lima, R. Lins, F. Freitas, M. Riss, S. Simske

{"title":"A Concept-Based Integer Linear Programming Approach for Single-Document Summarization","authors":"Hilário Oliveira, Rinaldo Lima, R. Lins, F. Freitas, M. Riss, S. Simske","doi":"10.1109/BRACIS.2016.079","DOIUrl":"https://doi.org/10.1109/BRACIS.2016.079","url":null,"abstract":"Automatic single-document summarization is a process that receives a single input document and outputs a condensed version with only the most relevant information. This paper proposes an unsupervised concept-based approach for singledocument summarization using Integer Linear Programming (ILP). Such an approach maximizes the coverage of the important concepts in the summary, avoiding redundancy, and taking into consideration some readability aspects of the generated summary as well. A new weighting method that combines both coverage and position of the sentences is proposed to estimate the importance of a concept. Moreover, a weighted distribution strategy that prioritizes sentences at the beginning of the document if they have relevant concepts is investigated. The readability of the generated summaries is improved by the inclusion of constraints into the ILP model to avoid dangling coreferences and breaks in the normal discourse flow of the document. Experimental results on the DUC 2001-2002 and the CNN corpora demonstrated that the proposed approach is competitive with state-of-the-art summarizers evaluated regarding the traditional ROUGE scores.","PeriodicalId":183149,"journal":{"name":"2016 5th Brazilian Conference on Intelligent Systems (BRACIS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130036180","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: 6

An Ontology for Property Crime Based on Events from UFO-B Foundational Ontology 基于UFO-B基础本体事件的财产犯罪本体

2016 5th Brazilian Conference on Intelligent Systems (BRACIS) Pub Date : 2016-10-01 DOI: 10.1109/BRACIS.2016.067

C. Rodrigues, F. Freitas, R. Azevedo

引用次数: 9

Extreme Learning Machines for Datasets with Missing Values Using the Unscented Transform 使用Unscented变换的缺失值数据集的极限学习机

2016 5th Brazilian Conference on Intelligent Systems (BRACIS) Pub Date : 2016-10-01 DOI: 10.1109/BRACIS.2016.026

D. Mesquita, J. Gomes, L. R. Rodrigues

{"title":"Extreme Learning Machines for Datasets with Missing Values Using the Unscented Transform","authors":"D. Mesquita, J. Gomes, L. R. Rodrigues","doi":"10.1109/BRACIS.2016.026","DOIUrl":"https://doi.org/10.1109/BRACIS.2016.026","url":null,"abstract":"The existence of missing data is a common fact in real applications which can significantly affect the data analysis process. In order to overcome this problem, many methods have been proposed in the literature. Extreme Learning Machine (ELM) has become a very popular research topic in machine learning and artificial intelligence areas due to its characteristics such as fast training procedure, good generalization and universal approximation capability. Although ELM has been successfully applied in different domains, its basic formulation cannot handle datasets with missing values properly. This paper presents a variant of the Extreme Learning Machine (ELM) for datasets with missing values. In the proposed method, probability distributions for the missing values are estimated using the expectation maximization (EM) algorithm, assuming that data is normally distributed. The Unscented Transform (UT) is used to estimate the values of the hidden layer outputs, and the weights of the output layer are assigned using the Moore-Penrose Pseudoinverse. Numerical experiments are carried out in order to evaluate the performance of the proposed method in four real world and two synthetic regression datasets. The results show that the proposed method presented a good performance in terms of Average Root-Mean-Squared Error (ARMSE).","PeriodicalId":183149,"journal":{"name":"2016 5th Brazilian Conference on Intelligent Systems (BRACIS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130850558","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: 3

Image Classification Using Sum-Product Networks for Autonomous Flight of Micro Aerial Vehicles 基于和积网络的微型飞行器自主飞行图像分类

2016 5th Brazilian Conference on Intelligent Systems (BRACIS) Pub Date : 2016-10-01 DOI: 10.1109/BRACIS.2016.035

B. Sguerra, Fabio Gagliardi Cozman

引用次数: 12

Time Series Imputation Using Genetic Programming and Lagrange Interpolation 基于遗传规划和拉格朗日插值的时间序列插值

2016 5th Brazilian Conference on Intelligent Systems (BRACIS) Pub Date : 2016-10-01 DOI: 10.1109/BRACIS.2016.040

Damares C. O. de Resende, Á. Santana, F. Lobato

引用次数: 6

Many-Objective Evolutionary Algorithms for Multicast Routing with Quality of Service Problem 具有服务质量问题的多目标演化算法

2016 5th Brazilian Conference on Intelligent Systems (BRACIS) Pub Date : 2016-10-01 DOI: 10.1109/BRACIS.2016.043

Thiago Fialho de Queiroz Lafetá, Marcos L. P. Bueno, Christiane Regina Soares Brasil, G. Oliveira

{"title":"Many-Objective Evolutionary Algorithms for Multicast Routing with Quality of Service Problem","authors":"Thiago Fialho de Queiroz Lafetá, Marcos L. P. Bueno, Christiane Regina Soares Brasil, G. Oliveira","doi":"10.1109/BRACIS.2016.043","DOIUrl":"https://doi.org/10.1109/BRACIS.2016.043","url":null,"abstract":"In order to guarantee a proper end-to-end communication in computer networks, many applications impose Quality of Service (QoS) requirements. In QoS routing, multiple conflicting objectives are optimized simultaneously. On the other hand, multicasting (i.e. sending data to multiple destinations) in its simplest form is a computationally difficult problem, which becomes more challenging when QoS requirements are considered. Previous works have investigated the use of multi-objective evolutionary algorithms (MOEAs) in the multicast routing with QoS problem under a Pareto-dominance approach. In particular, the so-called SPEA2 algorithm has provided good results in problem formulations involving up to four objectives. However, it has been recognized that for higher-dimension problems the convergence of MOEAs can decline substantially. In this work, we propose a model for routing based on the many-objectives algorithm MEAMT (multi-objective evolutionary algorithms with many tables), aiming at better dealing with the difficulty faced by state-of-the-art routing methods when solving for higherdimensional formulations. We present the new model for multicast routing based on MEAMT, as well as report experiments on a comparison with SPEA2-based routing in formulations involving 4, 5 and 6 objectives over several problem instances with different topologies and sizes. The results indicate that the new routing model overcomes SPEA2 in most cases, specially when solving for higher dimensional problems in routing.","PeriodicalId":183149,"journal":{"name":"2016 5th Brazilian Conference on Intelligent Systems (BRACIS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125358997","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: 8

Investigating How "Good" Characteristics' Presence Are Related with Questions' Performance: An Empirical Study on a Programming Community 调查“好”特征的存在如何与问题的性能相关:一个编程社区的实证研究

2016 5th Brazilian Conference on Intelligent Systems (BRACIS) Pub Date : 2016-10-01 DOI: 10.1109/BRACIS.2016.060

C. Souza, José Remígio, F. Aragão, E. Costa, J. Fechine

{"title":"Investigating How \"Good\" Characteristics' Presence Are Related with Questions' Performance: An Empirical Study on a Programming Community","authors":"C. Souza, José Remígio, F. Aragão, E. Costa, J. Fechine","doi":"10.1109/BRACIS.2016.060","DOIUrl":"https://doi.org/10.1109/BRACIS.2016.060","url":null,"abstract":"Social query is the practice of sharing questions through collaborative environments. In order to receive help, askers usually broadcast their requests to the entire community. However, the prerequisite to receive help is to have the problem noticed by someone who is able and available to answer. Previous works have identified a correlation between the characteristics of the questions and the outcome of receiving or not an answer. These findings suggest that there are some characteristics that are more likely to attract the helpers' attention. Our proposal is to analyze the CQA history to identify how these so-called \"good\" characteristics affect the performance of shared questions. Our results suggest that: (1) answered questions present more of these \"good\" characteristics than unanswered ones, (2) the more \"good\" characteristics are present in a question, the more people it attracts, (3) the more people are attracted by a question, the faster it will be answered and more responses will be received, (4) answered questions attract more people than unanswered ones, (5) difficulty does not play a role in attracting people.","PeriodicalId":183149,"journal":{"name":"2016 5th Brazilian Conference on Intelligent Systems (BRACIS)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116912155","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: 3