2013 24th International Workshop on Database and Expert Systems Applications最新文献_第3页

Metalearner Based on Dynamic Neural Network for Strategic Bidding in Electricity Markets 基于动态神经网络的元学习器在电力市场策略竞价中的应用

2013 24th International Workshop on Database and Expert Systems Applications Pub Date : 2013-08-26 DOI: 10.1109/DEXA.2013.48

T. Pinto, T. Sousa, Elisa Barreira, Isabel Praça, Z. Vale

{"title":"Metalearner Based on Dynamic Neural Network for Strategic Bidding in Electricity Markets","authors":"T. Pinto, T. Sousa, Elisa Barreira, Isabel Praça, Z. Vale","doi":"10.1109/DEXA.2013.48","DOIUrl":"https://doi.org/10.1109/DEXA.2013.48","url":null,"abstract":"The restructuring of electricity markets, conducted to increase the competition in this sector, and decrease the electricity prices, brought with it an enormous increase in the complexity of the considered mechanisms. The electricity market became a complex and unpredictable environment, involving a large number of different entities, playing in a dynamic scene to obtain the best advantages and profits. Software tools became, therefore, essential to provide simulation and decision support capabilities, in order to potentiate the involved players' actions. This paper presents the development of a metalearner, applied to the decision support of electricity markets' negotiation entities. The proposed metalearner executes a dynamic artificial neural network to create its own output, taking advantage on several learning algorithms implemented in ALBidS, an adaptive learning system that provides decision support to electricity markets' players. The proposed metalearner considers different weights for each strategy, depending on its individual quality of performance. The results of the proposed method are studied and analyzed in scenarios based on real electricity markets' data, using MASCEM - a multi-agent electricity market simulator that simulates market players' operation in the market.","PeriodicalId":428515,"journal":{"name":"2013 24th International Workshop on Database and Expert Systems Applications","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128276606","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: 1

Hydropower Bidding Strategies to Day-Ahead and Real-Time Markets: Different Approaches 日前和实时市场的水电竞价策略:不同方法

2013 24th International Workshop on Database and Expert Systems Applications Pub Date : 2013-08-26 DOI: 10.1109/DEXA.2013.45

Yelena Vardanyan, L. Söder, Mikael Amelinvii

引用次数: 10

From Ambiguous Words to Key-Concept Extraction 从歧义词到关键概念提取

2013 24th International Workshop on Database and Expert Systems Applications Pub Date : 2013-08-26 DOI: 10.1109/DEXA.2013.16

M. Sajgalík, M. Barla, M. Bieliková

引用次数: 15

Bridging the Gap between Citizens and Local Administrations with Knowledge-Based Service Bundle Recommendations 以知识为基础的一揽子服务建议弥合公民与地方政府之间的差距

2013 24th International Workshop on Database and Expert Systems Applications Pub Date : 2013-08-26 DOI: 10.1109/DEXA.2013.25

C. Baldassarre, M. Cremaschi, M. Palmonari

{"title":"Bridging the Gap between Citizens and Local Administrations with Knowledge-Based Service Bundle Recommendations","authors":"C. Baldassarre, M. Cremaschi, M. Palmonari","doi":"10.1109/DEXA.2013.25","DOIUrl":"https://doi.org/10.1109/DEXA.2013.25","url":null,"abstract":"The Italian Public Administration Services (IPAS) is a registry of services provided to Italian citizens likewise the Local Government Service List (UK), or the European Service List for local authorities from other nations. Unlike existing registries, IPAS presents the novelty of modelling public services from the view point of the value they have for the consumers and the providers. A value-added-service (VAS) is linked to a life event that requires its fruition, addresses consumer categories to identify market opportunities for private providers, and is described by non-functional-properties such as price and time of fruition. Where Italian local authorities leave the citizen-users in a daedalus of references to understand whether they can/have to apply for a service, the IPAS model captures the necessary back-ground knowledge about the connection between administrative legislation and service specifications, life events, and application contexts to support the citizen-users to fulfill their needs. As a proof of concept, we developed an operational Web environment named ASSO, designed to assist the citizen-user to intuitively create bundles of mandatory-by-legislation and recommended services, to accomplish his bureaucratic fulfillments. Although ASSO is an ongoing project, domain experts gave preliminary positive feedback on the innovativeness and effectiveness of the proposed approach.","PeriodicalId":428515,"journal":{"name":"2013 24th International Workshop on Database and Expert Systems Applications","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130348546","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: 13

Application of Systematic Data Mining for Prediction of Biological Quality Indices 系统数据挖掘在生物质量指标预测中的应用

2013 24th International Workshop on Database and Expert Systems Applications Pub Date : 2013-08-26 DOI: 10.1109/DEXA.2013.41

Uliana Bakhtina, D. Fleischer, Kai Jannaschk

引用次数: 0

An Approach for Populating and Enriching Ontology-Based Repositories 一种填充和丰富基于本体的存储库的方法

2013 24th International Workshop on Database and Expert Systems Applications Pub Date : 2013-08-26 DOI: 10.1109/DEXA.2013.19

Alda Canito, P. Maio, Nuno Silva

{"title":"An Approach for Populating and Enriching Ontology-Based Repositories","authors":"Alda Canito, P. Maio, Nuno Silva","doi":"10.1109/DEXA.2013.19","DOIUrl":"https://doi.org/10.1109/DEXA.2013.19","url":null,"abstract":"Publically available text-based documents (e.g. news, meeting transcripts) are a very important source of knowledge, especially for organizations. These documents mention domain entities such as persons, places, professional positions, decisions and actions. Querying these documents (instead of browsing, searching and finding) is a very relevant task for any person in general, and particularly for professionals dealing with intensive knowledge tasks. Querying text-based documents' data, however, is not supported by common technology. For that, such documents' content has to be explicitly and formally captured as facts into a knowledge base. Making use of automatic NLP processes for capturing such facts is a common approach, but their relatively low precision and recall give rise to data quality problems. Furthermore, facts existing in the documents are often insufficient to answer complex queries, thus the need to enrich the captured facts with facts from third-party repositories (e.g. public LOD). This paper describes the adopted process to clean, populate and enrich a knowledge base repository that is further exploited to answer complex queries. This process is triggered by a previous NLP parsing process and conducted by the (rich) ontology describing such repository.","PeriodicalId":428515,"journal":{"name":"2013 24th International Workshop on Database and Expert Systems Applications","volume":"98 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-08-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126069440","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: 1

Decision Guidance for Optimizing Web Data Quality - A Recommendation Model for Completing Information Extraction Results 优化Web数据质量的决策指南——完成信息提取结果的推荐模型

2013 24th International Workshop on Database and Expert Systems Applications Pub Date : 2013-08-26 DOI: 10.1109/DEXA.2013.17

C. Feilmayr

引用次数: 1

Risk Analytics for Estimating and Validating Magnitude of Earthquake Losses 估算和验证地震损失震级的风险分析

2013 24th International Workshop on Database and Expert Systems Applications Pub Date : 2013-08-26 DOI: 10.1109/DEXA.2013.9

Anthony Astoul, C. Filliter, A. Rau-Chaplin, K. Shridhar, B. Varghese, Naman Varshney

引用次数: 1

Mini Story Composition for Generic Workflows in Support of Disaster Management 支持灾难管理的通用工作流的迷你故事组合

2013 24th International Workshop on Database and Expert Systems Applications Pub Date : 2013-08-26 DOI: 10.1109/DEXA.2013.11

B. Thalheim, M. Tropmann-Frick

引用次数: 10

Agent-Based Simulation of Retail Electricity Markets: Bilateral Contracting with Demand Response 基于代理的零售电力市场模拟:需求响应的双边契约

2013 24th International Workshop on Database and Expert Systems Applications Pub Date : 2013-08-26 DOI: 10.1109/DEXA.2013.51

F. Lopes, H. Algarvio, Cristina Ilco, J. Sousa

引用次数: 6