Applied Computer Systems最新文献_第9页

Minimal Total Weighted Tardiness in Tight-Tardy Single Machine Preemptive Idling-Free Scheduling 紧延迟单机抢占无空闲调度的最小总加权延迟

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Applied Computer Systems Pub Date : 2019-12-01 DOI: 10.2478/acss-2019-0019

V. Romanuke

{"title":"Minimal Total Weighted Tardiness in Tight-Tardy Single Machine Preemptive Idling-Free Scheduling","authors":"V. Romanuke","doi":"10.2478/acss-2019-0019","DOIUrl":"https://doi.org/10.2478/acss-2019-0019","url":null,"abstract":"Abstract Two possibilities of obtaining the minimal total weighted tardiness in tight-tardy single machine preemptive idling-free scheduling are studied. The Boolean linear programming model, which allows obtaining the exactly minimal tardiness, becomes too time-consuming as either the number of jobs or numbers of job parts increase. Therefore, a heuristic based on remaining available and processing periods is used instead. The heuristic schedules 2 jobs always with the minimal tardiness. In scheduling 3 to 7 jobs, the risk of missing the minimal tardiness is just 1.5 % to 3.2 %. It is expected that scheduling 12 and more jobs has at the most the same risk or even lower. In scheduling 10 jobs without a timeout, the heuristic is almost 1 million times faster than the exact model. The exact model is still applicable for scheduling 3 to 5 jobs, where the averaged computation time varies from 0.1 s to 1.02 s. However, the maximal computation time for 6 jobs is close to 1 minute. Further increment of jobs may delay obtaining the minimal tardiness at least for a few minutes, but 7 jobs still can be scheduled at worst for 7 minutes. When scheduling 8 jobs and more, the exact model should be substituted with the heuristic.","PeriodicalId":41960,"journal":{"name":"Applied Computer Systems","volume":"83 1","pages":"150 - 160"},"PeriodicalIF":1.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85554943","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: 11

Results From Expert Survey on System Analysis Process Activities 系统分析过程活动专家调查结果

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Applied Computer Systems Pub Date : 2019-12-01 DOI: 10.2478/acss-2019-0018

Laima Leimane, O. Ņikiforova

引用次数: 1

Extracting TFM Core Elements From Use Case Scenarios by Processing Structure and Text in Natural Language 利用自然语言处理结构和文本从用例场景中提取TFM核心元素

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Applied Computer Systems Pub Date : 2019-12-01 DOI: 10.2478/acss-2019-0012

Erika Nazaruka, J. Osis, Viktorija Gribermane

引用次数: 0

Genetic Algorithm Based Feature Selection Technique for Electroencephalography Data 基于遗传算法的脑电图数据特征选择技术

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Applied Computer Systems Pub Date : 2019-12-01 DOI: 10.2478/acss-2019-0015

Tariq Ali, Asif Nawaz, H. Sadia

引用次数: 3

A Dataset-Independent Model for Estimating Software Development Effort Using Soft Computing Techniques 使用软计算技术估算软件开发工作量的数据集独立模型

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Applied Computer Systems Pub Date : 2019-12-01 DOI: 10.2478/acss-2019-0011

Mahdi Khazaiepoor, A. K. Bardsiri, F. Keynia

{"title":"A Dataset-Independent Model for Estimating Software Development Effort Using Soft Computing Techniques","authors":"Mahdi Khazaiepoor, A. K. Bardsiri, F. Keynia","doi":"10.2478/acss-2019-0011","DOIUrl":"https://doi.org/10.2478/acss-2019-0011","url":null,"abstract":"Abstract During the recent years, numerous endeavours have been made in the area of software development effort estimation for calculating the software costs in the preliminary development stages. These studies have resulted in the offering of a great many of the models. Despite the large deal of efforts, the substantial problems of the offered methods are their dependency on the used data collection and, sometimes, their lack of appropriate efficiency. The current article attempts to present a model for software development effort estimation through making use of evolutionary algorithms and neural networks. The distinctive characteristic of this model is its lack of dependency on the collection of data used as well as its high efficiency. To evaluate the proposed model, six different data collections have been used in the area of software effort estimation. The reason for the application of several data collections is related to the investigation of the model performance independence of the data collection used. The evaluation scales have been MMRE, MdMRE and PRED (0.25). The results have indicated that the proposed model, besides delivering high efficiency in contrast to its counterparts, produces the best responses for all of the used data collections.","PeriodicalId":41960,"journal":{"name":"Applied Computer Systems","volume":"61 1","pages":"82 - 93"},"PeriodicalIF":1.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84573420","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

Fuzzy Expert System Generalised Model for Medical Applications 医学应用中的模糊专家系统广义模型

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Applied Computer Systems Pub Date : 2019-12-01 DOI: 10.2478/acss-2019-0016

Osée Muhindo Masivi

引用次数: 0

A New Big Data Model Using Distributed Cluster-Based Resampling for Class-Imbalance Problem 基于分布式聚类重采样的类不平衡问题大数据模型

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Applied Computer Systems Pub Date : 2019-12-01 DOI: 10.2478/acss-2019-0013

Duygu Sinanc Terzi, Ş. Sağiroğlu

引用次数: 3

Affective State Based Anomaly Detection in Crowd 基于情感状态的人群异常检测

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Applied Computer Systems Pub Date : 2019-12-01 DOI: 10.2478/acss-2019-0017

Glorija Baliniskite, E. Lavendelis, Mara Pudane

引用次数: 2

Development of Ontology Based Competence Management Model for Non-Formal Education Services 基于本体的非正规教育服务能力管理模型开发

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Applied Computer Systems Pub Date : 2019-12-01 DOI: 10.2478/acss-2019-0014

Uldis Zandbergs, J. Grundspeņķis, Janis Judrups, Signe Brike

{"title":"Development of Ontology Based Competence Management Model for Non-Formal Education Services","authors":"Uldis Zandbergs, J. Grundspeņķis, Janis Judrups, Signe Brike","doi":"10.2478/acss-2019-0014","DOIUrl":"https://doi.org/10.2478/acss-2019-0014","url":null,"abstract":"Abstract Competence management is a discipline that recently has regained popularity due to the growing demand for constantly higher competences of employees as well as graduates. One of the main implementation challenges of competence management is that, as a rule, it is based on experts’ implicit knowledge. This is the reason why the transformation of implicit knowledge into explicit knowledge practically is unmanageable and, as a consequence, limits the ability to transfer the already existing knowledge from one organisation to another. The paper proposes an ontology-based competence model that allows the reuse of existing competence frameworks in the field of non-formal education where different competence frameworks need to be used together for the purpose of identification, assessment and development of customers’ competences without forcing the organisations to change their routine competence management processes. The proposed competence model is used as a basis for development of competence management model on which IT tools that support a competence management processes may be built up. Several existing frameworks have been analysed and the terminology used in them has been combined in a single model. The usage of the proposed model is discussed and the possible IT tools to support the competence management process are identified in the paper.","PeriodicalId":41960,"journal":{"name":"Applied Computer Systems","volume":"26 1","pages":"111 - 118"},"PeriodicalIF":1.0,"publicationDate":"2019-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85087438","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

A Semantic Retrieval System for Case Law 判例法语义检索系统

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Applied Computer Systems Pub Date : 2019-05-01 DOI: 10.2478/acss-2019-0006

E. P. Ebietomere, G. Ekuobase

{"title":"A Semantic Retrieval System for Case Law","authors":"E. P. Ebietomere, G. Ekuobase","doi":"10.2478/acss-2019-0006","DOIUrl":"https://doi.org/10.2478/acss-2019-0006","url":null,"abstract":"Abstract Legal reasoning, the core of legal practice in many countries, is “stare decisis” and its soundness is usually strengthened by relevant case law consulted. However, the task of relevant case law access and retrieval is tiring to legal practitioners and constitutes a serious drain on their productivity. Existing efforts at addressing this problem are conceptional, restrictive or unreliable. Specifically, existing semantic retrieval (SR) systems for case law are desirous of exceptional retrieval precision. Ontology promises to meet this desire, if introduced to the SR system. As a consequence, an ontology-based SR system for case law has been built using the systems analysis and design methodology. In particular, the component-based software engineering and the agile methodologies are employed to implement the system. Finally, the search and retrieval performance of the resultant SR system has been evaluated using the heuristics evaluation method. The retrieval system has shown to have a search and retrieval performance of about 94 % precision, 80 % recall and 84 % F-measure. Overall, the paper implements the SR system for case law with excellent precision and affirms the superiority of ontology approach over other semantic approaches to SR systems for document retrieval in the legal domain.","PeriodicalId":41960,"journal":{"name":"Applied Computer Systems","volume":"22 1","pages":"38 - 48"},"PeriodicalIF":1.0,"publicationDate":"2019-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78482998","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