J. Reyes-Ortíz, B. González-Beltrán, Lizbeth Gallardo-López
{"title":"Clinical Decision Support Systems: A Survey of NLP-Based Approaches from Unstructured Data","authors":"J. Reyes-Ortíz, B. González-Beltrán, Lizbeth Gallardo-López","doi":"10.1109/DEXA.2015.47","DOIUrl":"https://doi.org/10.1109/DEXA.2015.47","url":null,"abstract":"Clinical Decision Support on patients health outcomes can be performed from free text with Natural Language Processing techniques. However, it becomes a computational challenge due to the complexity of natural language. In recent years, several NLP-based approaches have been proposed to consider clinical decisions support. This paper presents a survey of Natural Language Processing approaches to support clinical decisions on patient health outcomes. The presented approaches are emphasized on the use of free text as input for diverse languages. An analysis of clinical decision support systems based on natural language processing in terms of their performance results is presented.","PeriodicalId":239815,"journal":{"name":"2015 26th International Workshop on Database and Expert Systems Applications (DEXA)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126154854","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}
{"title":"Inverse Problems and Data Fusion for Crop Production Applications Targeting Optimal Growth - Fertilization","authors":"Bipjeet Kaur, R. Owusu","doi":"10.1109/DEXA.2015.39","DOIUrl":"https://doi.org/10.1109/DEXA.2015.39","url":null,"abstract":"This work in progress is a contribution to cropgrowth systems for planning and monitoring of farm activitiesand practices by farmers. The work outlines the initial findingsrelated to modelling, simulation and visualization techniques forcrop growth, specifically targeting the barley crop, such thatthe crop yield is optimized with respect to several parameters(e.g. high end user value and minimum environmental impact),thus obtaining a sustainable production. The growth processoptimization is based on information, including sensor basedmeasurements with sensor quality monitoring, from previousand the present growth season. Initially, references targetingthe importance of site specific management for obtaining theobjective of yield optimization under the constraint of minimizingthe environmental load is pointed to. This is followed by keyreferences on modelling, simulation and visualization of thecrop growth process based on information on soil quality, fieldseeding, spraying/fertilization and environmental informationin general. Finally, references to software tools, which couldform the basis for an open source platform for a planningand monitoring system for optimal crop growth in multipleapplication areas are given. The contribution concludes withproposals of research questions to be pursued in the near future.","PeriodicalId":239815,"journal":{"name":"2015 26th International Workshop on Database and Expert Systems Applications (DEXA)","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114136809","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}
J. Perez-Espinoza, Víctor Jesús Sosa Sosa, J. L. González, E. Tello-Leal
{"title":"A Distributed Architecture for Monitoring Private Clouds","authors":"J. Perez-Espinoza, Víctor Jesús Sosa Sosa, J. L. González, E. Tello-Leal","doi":"10.1109/DEXA.2015.51","DOIUrl":"https://doi.org/10.1109/DEXA.2015.51","url":null,"abstract":"Cloud monitoring has become a key tool for organizations to ensure that their critical processes are being effectively managed in a private cloud infrastructure. A cloud monitoring tool should include complex tasks such as information extraction, management and planning of alerts in order to keep the service up during failures. However, current available solutions for private clouds only support some of these tasks. In this paper we present a distributed architecture for monitoring private clouds that unifies a set of monitoring tasks in a single service. This service includes the following configurable tools: Collectors, Metasensors, Distributors and Visualizer. A collector is a software tool that gathers monitoring information from physical and/or virtual machines (PM and/or VM) by using a set of special monitoring tools dubbed Metasensors. Collectors include a neural network-based component to classify the type of current workload on the monitored resource. This classification allows system administrators to define thresholds and create alerts to prevent saturation scenarios. A distributor is a tool that assigns the resources to be monitored (PMs and VMs) to collectors and concentrates the information gathered and processed by collectors in order to obtain the current workload status information of the private cloud infrastructure. This information can be showed to system administrator by using our visualizer tool. Our distribution approach avoids data centralization and provides the service with load balancing and fault tolerance. We developed a prototype based on our architecture and conducted an experimental evaluation as a proof of concept. The evaluation revealed the feasibility of our architecture in terms of performance and precision.","PeriodicalId":239815,"journal":{"name":"2015 26th International Workshop on Database and Expert Systems Applications (DEXA)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125679533","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}
Catarina Ribeiro, T. Pinto, Marco R. Silva, S. Ramos, Z. Vale
{"title":"Data Mining Approach for Decision Support in Real Data Based Smart Grid Scenario","authors":"Catarina Ribeiro, T. Pinto, Marco R. Silva, S. Ramos, Z. Vale","doi":"10.1109/DEXA.2015.33","DOIUrl":"https://doi.org/10.1109/DEXA.2015.33","url":null,"abstract":"The increasing use of renewable energy sources and distributed generation brought several changes to the power system operation, with huge implications to the competitive electricity markets. With the eminent implementation of microgrids and smart grids, new business models able to cope with the new opportunities are being developed. Virtual Power Players are a new type of player, which allows aggregating a diversity of entities, e.g. generation, storage, electric vehicles, and consumers, to facilitate their participation in the electricity markets and to provide a set of new services promoting generation and consumption efficiency, while improving players` benefits. The contribution of this paper is a clustering methodology regarding the remuneration and tariff of VPP. It proposes a model to implement fair and strategic remuneration and tariff methodologies, using a clustering algorithm, which creates sub-groups of data according to their correlations. The clustering process is evaluated so that the number of data sub-groups that brings the most added value for the decision making process is found, according to the players characteristics. The proposed clustering methodology has been tested in a real distribution network with 16 bus, including residential and commercial consumers, PV generation and storage units.","PeriodicalId":239815,"journal":{"name":"2015 26th International Workshop on Database and Expert Systems Applications (DEXA)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130506689","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}
{"title":"A Hybrid Possibilistic Algorithm for Biclustering: Application to Microarray Data Analysis","authors":"Haifa Ben Saber, M. Elloumi","doi":"10.1109/DEXA.2015.29","DOIUrl":"https://doi.org/10.1109/DEXA.2015.29","url":null,"abstract":"A attractive way to perform biclustering of genes and conditions is to adopt the notion of fuzzy sets, which is useful for discovering overlapping biclusters. Fuzzy clustering is well known as a robust and efficient way to reduce computation cost to obtain the better results. However, this approach is not explored very well. In this paper, we propose a new algorithm called, Refine Bicluster for biclustering of microarray data using the fuzzy approach. This algorithm adopts the strategy of one bicluster at a time, assigning to each data matrix element, i.e. each gene and for each condition, a membership to bicluster. The biclustering problem, in where one would maximize the size of the bicluster and minimize the residual, is faced as the optimization of a proper functional. Applied on continuous synthetic datasets, our algorithm outperforms other biclustering algorithms for microarray data.","PeriodicalId":239815,"journal":{"name":"2015 26th International Workshop on Database and Expert Systems Applications (DEXA)","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132361290","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}
T. Pinto, H. Silva, Z. Vale, Gabriel Santos, Isabel Praça
{"title":"Pan-European Electricity Market Simulation Considering the European Power Network Capacities","authors":"T. Pinto, H. Silva, Z. Vale, Gabriel Santos, Isabel Praça","doi":"10.1109/DEXA.2015.36","DOIUrl":"https://doi.org/10.1109/DEXA.2015.36","url":null,"abstract":"Worldwide electricity markets have been evolving into regional and even continental scales. The aim at an efficient use of renewable based generation in places where it exceeds the local needs is one of the main reasons. A reference case of this evolution is the European electricity market, where countries are connected, and several regional markets were created, each one grouping several countries, and supporting transactions of huge amounts of electrical energy. However, physical constraints, such as the grid limited capacity, are major setbacks, which make the full European market unification a more distant goal. This paper presents a study that aims at analyzing the capability of the existing European transmission network in accommodating a full unification of the European electricity markets. This study considers the real European transmission network capacities, supporting a unified Pan-European electricity market scenario, which is simulated using the Multi-Agent System for Competitive Electricity Markets.","PeriodicalId":239815,"journal":{"name":"2015 26th International Workshop on Database and Expert Systems Applications (DEXA)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114161269","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}
Ž. Nakutis, V. Deksnys, I. Jaruevicius, E. Marcinkevicius, A. Ronkainen, P. Soumi, J. Nikander, T. Blaszczyk, Birger Andersen
{"title":"Remote Agriculture Automation Using Wireless Link and IoT Gateway Infrastructure","authors":"Ž. Nakutis, V. Deksnys, I. Jaruevicius, E. Marcinkevicius, A. Ronkainen, P. Soumi, J. Nikander, T. Blaszczyk, Birger Andersen","doi":"10.1109/DEXA.2015.37","DOIUrl":"https://doi.org/10.1109/DEXA.2015.37","url":null,"abstract":"The publication presents a system architecture for remote agriculture process automation, involving sensors and actuators connected to IoT gateway running OPC UA server. Sensors and actuators are very general and do not need any intelligence related to the process under control. Acquired data processing and control algorithms that produce control stimulus are executed in the gateway. This approach features the advantage of convenient possibilities to change control rules from Cloud services (installing or configuring process controller) without updating firmware of remote sensors/actuators. Throughput of data collection channel (long range radio) and IoT gateway performance are limiting factors for real time control or observation of agriculture processes. Therefore, achievable channel \"sensors-OPC UA server\" throughput is investigated experimentally. Potential agriculture applications that may benefit from the proposed architecture are identified.","PeriodicalId":239815,"journal":{"name":"2015 26th International Workshop on Database and Expert Systems Applications (DEXA)","volume":"65 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123941759","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}
{"title":"A Pipeline for Multilingual Protest Event Selection and Annotation","authors":"V. Danilova","doi":"10.1109/DEXA.2015.73","DOIUrl":"https://doi.org/10.1109/DEXA.2015.73","url":null,"abstract":"This paper presents a pipeline for multilingual analysis of contentious social behaviour. Its basic functionalities include news articles extraction from a variety of multilingual news sources (in Bulgarian, French, Polish, Russian, Spanish, and Swedish), protest event selection and an ontology-based event annotation. The results are output in CSV format. An evaluation of protest event selection and annotation (Event Reason slot) algorithms is presented.","PeriodicalId":239815,"journal":{"name":"2015 26th International Workshop on Database and Expert Systems Applications (DEXA)","volume":"369 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124626587","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}
Chris Staff, J. Azzopardi, Colin J. Layfield, D. Mercieca
{"title":"Search Results Clustering without External Resources","authors":"Chris Staff, J. Azzopardi, Colin J. Layfield, D. Mercieca","doi":"10.1109/DEXA.2015.67","DOIUrl":"https://doi.org/10.1109/DEXA.2015.67","url":null,"abstract":"Our unsupervised Search Results Clustering (SRC) system partitions into clusters the top-n results returned by a search engine. We present the results of experiments with our SRC system that performs incremental clustering on document titles and snippets only and does not use external resources, yet which outperforms the best performers to date on the SemEval-2013 Task 11 gold standard. We include Latent Semantic Analysis (LSA) as an optional step, using the snippets themselves as the background corpus. We demonstrate that better results are achieved by leaving the query terms out of the clustering process, and that currently, the version without LSA outperforms the version with LSA.","PeriodicalId":239815,"journal":{"name":"2015 26th International Workshop on Database and Expert Systems Applications (DEXA)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130792092","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}
Jorge Martínez Gil, Georgios C. Chasparis, Andreas Bögl, Christa Illibauer, B. Freudenthaler, T. Natschläger
{"title":"Framework for Fast Prototyping of Energy-Saving Controllers","authors":"Jorge Martínez Gil, Georgios C. Chasparis, Andreas Bögl, Christa Illibauer, B. Freudenthaler, T. Natschläger","doi":"10.1109/DEXA.2015.32","DOIUrl":"https://doi.org/10.1109/DEXA.2015.32","url":null,"abstract":"Due to the high costs of real-time experiments, performance simulation has become a widely accepted method of assessment for the quality of proposed solutions in the field of energy saving. Additionally, being able to simulate the behavior of the future occupants of a residential building, as well as weather forecasts, can be very useful since it can support both design-time and run-time decisions leading to reduced energy consumption through, e.g., the design of model predictive controllers that incorporate user behavior and weather predictions. In this work, we provide a framework for fast prototyping of energy saving controllers in residential buildings. In fact, we are interested in how to deal with many aspects of the process so that these controllers can implement alternative strategies for energy saving.","PeriodicalId":239815,"journal":{"name":"2015 26th International Workshop on Database and Expert Systems Applications (DEXA)","volume":"71 9","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120840594","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}