R. Brzoza-Woch, Tomasz Michalec, Maksymilian Wojczuk, T. Szydlo
This article presents a concept of a system which can be utilized as a remote management add-on for embedded devices. It can be applied to resource-constrained wireless sensors and IoT nodes based on a general purpose microcontroller unit or a field programmable gate array (FPGA) chip. The proposed solution facilitates remote firmware update, management, and operation monitoring. Thanks to the utilization of standard protocols and interfaces, the proposed system is very flexible and it can be easily customized for multiple modern microcontrollers or programmable logic chips. The presented system can be an efficient solution for fast prototyping and it can be an alternative to a time-consuming process of bootloader development for ad hoc devices. It can also be applied to remote laboratory access for educational purposes. A proof of concept prototype implementation has been successfully developed and evaluated. The implementation is available on a free license and utilizes a commonly available and inexpensive hardware platform.
{"title":"Remote Programming and Reconfiguration System for Embedded Devices","authors":"R. Brzoza-Woch, Tomasz Michalec, Maksymilian Wojczuk, T. Szydlo","doi":"10.15439/2019F170","DOIUrl":"https://doi.org/10.15439/2019F170","url":null,"abstract":"This article presents a concept of a system which can be utilized as a remote management add-on for embedded devices. It can be applied to resource-constrained wireless sensors and IoT nodes based on a general purpose microcontroller unit or a field programmable gate array (FPGA) chip. The proposed solution facilitates remote firmware update, management, and operation monitoring. Thanks to the utilization of standard protocols and interfaces, the proposed system is very flexible and it can be easily customized for multiple modern microcontrollers or programmable logic chips. The presented system can be an efficient solution for fast prototyping and it can be an alternative to a time-consuming process of bootloader development for ad hoc devices. It can also be applied to remote laboratory access for educational purposes. A proof of concept prototype implementation has been successfully developed and evaluated. The implementation is available on a free license and utilizes a commonly available and inexpensive hardware platform.","PeriodicalId":168208,"journal":{"name":"2019 Federated Conference on Computer Science and Information Systems (FedCSIS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125484601","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}
This paper presents an application of spline-wavelet transformation and bent-functions for the construction of robust codes. To improve the1 non-linear properties of presented robust codes, bent-functions were used. Bent-functions ensure maximum non-linearity of functions, increasing the probability of detecting an error in the data channel. In the work different designs of codes based on wavelet transform and bent-functions are developed. The difference of constructions consists of using different grids for wavelet transformation and using different bent-functions. The developed robust codes have higher characteristics compared to existing. These codes can be used for ensuring the security of transmitted information.
{"title":"Spline-Wavelet Bent Robust Codes","authors":"A. Levina, G. Ryaskin, I. Zikratov","doi":"10.15439/2019F134","DOIUrl":"https://doi.org/10.15439/2019F134","url":null,"abstract":"This paper presents an application of spline-wavelet transformation and bent-functions for the construction of robust codes. To improve the1 non-linear properties of presented robust codes, bent-functions were used. Bent-functions ensure maximum non-linearity of functions, increasing the probability of detecting an error in the data channel. In the work different designs of codes based on wavelet transform and bent-functions are developed. The difference of constructions consists of using different grids for wavelet transformation and using different bent-functions. The developed robust codes have higher characteristics compared to existing. These codes can be used for ensuring the security of transmitted information.","PeriodicalId":168208,"journal":{"name":"2019 Federated Conference on Computer Science and Information Systems (FedCSIS)","volume":"76 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123182502","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}
Optimization of the production process is important for every factory or organization. The better organization can be done by optimization of the workforce planing. The main goal is decreasing the assignment cost of the workers with the help of which, the work will be done. The problem is NP-hard, therefore it can be solved with algorithms coming from artificial intelligence. The problem is to select employers and to assign them to the jobs to be performed. The constraints of this problem are very strong and for the algorithms is difficult to find feasible solutions. We apply Ant Colony Optimization Algorithm to solve the problem.We investigate the algorithm performance according evaporation parameter. The aim is to find the best parameter setting.
{"title":"Ant Colony optimization Algorithm for Workforce Planning: Influence of the Evaporation Parameter","authors":"S. Fidanova, Gabriel Luque, O. Roeva, M. Ganzha","doi":"10.15439/2019F300","DOIUrl":"https://doi.org/10.15439/2019F300","url":null,"abstract":"Optimization of the production process is important for every factory or organization. The better organization can be done by optimization of the workforce planing. The main goal is decreasing the assignment cost of the workers with the help of which, the work will be done. The problem is NP-hard, therefore it can be solved with algorithms coming from artificial intelligence. The problem is to select employers and to assign them to the jobs to be performed. The constraints of this problem are very strong and for the algorithms is difficult to find feasible solutions. We apply Ant Colony Optimization Algorithm to solve the problem.We investigate the algorithm performance according evaporation parameter. The aim is to find the best parameter setting.","PeriodicalId":168208,"journal":{"name":"2019 Federated Conference on Computer Science and Information Systems (FedCSIS)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127282575","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}
In the recent years, it has been shown that real world-problems are often comprised of two, interdependent subproblems. Often, solving them independently does not lead to the solution to the entire problem. In this article, a Travelling Thief Problem is considered, which combines a Travelling Salesman Problem with a Knapsack Problem. A Non-Dominated Sorting Genetic Algorithm II (NSGA-II) is investigated, along with its recent modification - a Non-Dominated Tournament Genetic Algorithm (NTGA). Each method is investigated in two configurations. One, with generic representation, and genetic operators. The other, specialized to the given problem, to show how the specialization of genetic operators leads to better results. The impact of the modifications introduced by NTGA is verified. A set of Quality Measures is used to verify the convergence, and diversity of the resulting PF approximations, and efficiency of the method. A set of experiments is carried out. It is shown that both methods work almost the same when generic representation is used. However, NTGA outperforms classical NSGA-II in the specialized results.
{"title":"A Specialized Evolutionary Approach to the bi-objective Travelling Thief Problem","authors":"Maciej Laszczyk, P. Myszkowski","doi":"10.15439/2019F191","DOIUrl":"https://doi.org/10.15439/2019F191","url":null,"abstract":"In the recent years, it has been shown that real world-problems are often comprised of two, interdependent subproblems. Often, solving them independently does not lead to the solution to the entire problem. In this article, a Travelling Thief Problem is considered, which combines a Travelling Salesman Problem with a Knapsack Problem. A Non-Dominated Sorting Genetic Algorithm II (NSGA-II) is investigated, along with its recent modification - a Non-Dominated Tournament Genetic Algorithm (NTGA). Each method is investigated in two configurations. One, with generic representation, and genetic operators. The other, specialized to the given problem, to show how the specialization of genetic operators leads to better results. The impact of the modifications introduced by NTGA is verified. A set of Quality Measures is used to verify the convergence, and diversity of the resulting PF approximations, and efficiency of the method. A set of experiments is carried out. It is shown that both methods work almost the same when generic representation is used. However, NTGA outperforms classical NSGA-II in the specialized results.","PeriodicalId":168208,"journal":{"name":"2019 Federated Conference on Computer Science and Information Systems (FedCSIS)","volume":"73 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127332127","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}
Eugenio Martínez-Cámara, Nuria Rodríguez Barroso, A. R. Moya, José Alberto Fernández, Elena Romero, Francisco Herrera
The state of the art in Sentiment Analysis is defined by deep learning methods, and currently the research efforts are focused on improving the encoding of underlying contextual information in a sequence of text. However, those neural networks with a higher representation capacity are increasingly more complex, which means that they have more hyper-parameters that have to be defined by hand. We argue that the setting of hyper-parameters may be defined as an optimisation task, we thus claim that evolutionary algorithms may be used to the optimisation of the hyper-parameters of a deep learning method. We propose the use of the evolutionary algorithm SHADE for the optimisation of the configuration of a deep learning model for the task of sentiment analysis in Twitter. We evaluate our proposal in a corpus of Spanish tweets, and the results show that the hyper-parameters found by the evolutionary algorithm enhance the performance of the deep learning method.
{"title":"Deep Learning Hyper-parameter Tuning for Sentiment Analysis in Twitter based on Evolutionary Algorithms","authors":"Eugenio Martínez-Cámara, Nuria Rodríguez Barroso, A. R. Moya, José Alberto Fernández, Elena Romero, Francisco Herrera","doi":"10.15439/2019F183","DOIUrl":"https://doi.org/10.15439/2019F183","url":null,"abstract":"The state of the art in Sentiment Analysis is defined by deep learning methods, and currently the research efforts are focused on improving the encoding of underlying contextual information in a sequence of text. However, those neural networks with a higher representation capacity are increasingly more complex, which means that they have more hyper-parameters that have to be defined by hand. We argue that the setting of hyper-parameters may be defined as an optimisation task, we thus claim that evolutionary algorithms may be used to the optimisation of the hyper-parameters of a deep learning method. We propose the use of the evolutionary algorithm SHADE for the optimisation of the configuration of a deep learning model for the task of sentiment analysis in Twitter. We evaluate our proposal in a corpus of Spanish tweets, and the results show that the hyper-parameters found by the evolutionary algorithm enhance the performance of the deep learning method.","PeriodicalId":168208,"journal":{"name":"2019 Federated Conference on Computer Science and Information Systems (FedCSIS)","volume":"88 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121874718","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}
To extend the lifetime of wireless sensor networks, recent works suggest the use of relay nodes. This paper surveys and examines representative approaches dealing with relay nodes deployment. It also discusses their shortcomings and presents a comparative study. Additionally, this paper provides a set of remarks and recommendations to improve the usage of relay nodes in wireless sensor networks and highlights open issues that need further investigation.
{"title":"Using Relay Nodes in Wireless Sensor Networks: A Review","authors":"Mustapha Réda Senouci, Mostefa Zafer, M. Aissani","doi":"10.15439/2019F26","DOIUrl":"https://doi.org/10.15439/2019F26","url":null,"abstract":"To extend the lifetime of wireless sensor networks, recent works suggest the use of relay nodes. This paper surveys and examines representative approaches dealing with relay nodes deployment. It also discusses their shortcomings and presents a comparative study. Additionally, this paper provides a set of remarks and recommendations to improve the usage of relay nodes in wireless sensor networks and highlights open issues that need further investigation.","PeriodicalId":168208,"journal":{"name":"2019 Federated Conference on Computer Science and Information Systems (FedCSIS)","volume":"290 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129255205","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}
Organisations worldwide are facing a market pressures which are forcing them to undertake digital transformation projects or initiatives. This research study set out to explore this in more depth, asking questions about the intention of South African (SA) retail organisations to adopt digital transformation and probing into the understanding and perception of digital transformation itself, as well as future intended use cases for available digital technologies. A case study approach was deemed to be an appropriate strategy given the paucity of existing academic research on the topic. Participants in the study had a good understanding of digital transformation and digital technologies, but perceptions were mixed. The most prominent digital transformation initiatives in the SA retail industry were the adoption of cloud technologies and data analytics. The factors identified in this study, using the Technology, Organisational, and Environmental (TOE) framework, can assist retailers in their decision-making process concerning digital transformation adoption.
{"title":"Factors Influencing the Intended Adoption of Digital Transformation: A South African Case Study","authors":"Jean-Paul Van Belle, R. Dyk","doi":"10.15439/2019F166","DOIUrl":"https://doi.org/10.15439/2019F166","url":null,"abstract":"Organisations worldwide are facing a market pressures which are forcing them to undertake digital transformation projects or initiatives. This research study set out to explore this in more depth, asking questions about the intention of South African (SA) retail organisations to adopt digital transformation and probing into the understanding and perception of digital transformation itself, as well as future intended use cases for available digital technologies. A case study approach was deemed to be an appropriate strategy given the paucity of existing academic research on the topic. Participants in the study had a good understanding of digital transformation and digital technologies, but perceptions were mixed. The most prominent digital transformation initiatives in the SA retail industry were the adoption of cloud technologies and data analytics. The factors identified in this study, using the Technology, Organisational, and Environmental (TOE) framework, can assist retailers in their decision-making process concerning digital transformation adoption.","PeriodicalId":168208,"journal":{"name":"2019 Federated Conference on Computer Science and Information Systems (FedCSIS)","volume":"36 6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131338921","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}
Using stereo-based depth cameras outdoors on drones can lead to challenging situations for stereo algorithms calculating a depth map. A false depth value indicating an object close to the drone can confuse obstacle avoidance algorithms and lead to erratic behavior during the drone flight. We analyze the encountered issues from real-world tests together with practical solutions including a post-processing method to modify depth maps against outliers with wring depth values.
{"title":"Depth Map Improvements for Stereo-based Depth Cameras on Drones","authors":"Daniel Pohl, Sergey Dorodnicov, Markus Achtelik","doi":"10.15439/2019F66","DOIUrl":"https://doi.org/10.15439/2019F66","url":null,"abstract":"Using stereo-based depth cameras outdoors on drones can lead to challenging situations for stereo algorithms calculating a depth map. A false depth value indicating an object close to the drone can confuse obstacle avoidance algorithms and lead to erratic behavior during the drone flight. We analyze the encountered issues from real-world tests together with practical solutions including a post-processing method to modify depth maps against outliers with wring depth values.","PeriodicalId":168208,"journal":{"name":"2019 Federated Conference on Computer Science and Information Systems (FedCSIS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129163038","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}
One of the contemporary problems, and at the same time a challenge, with development und usage of supply chain Information Systems are the issues associated with privacy and cyber security, which emerged due to new requirements of legal regulations and directives. The human factor belongs to the biggest risks within these issues. Leak of information, phishing, unauthorized access are the main problems. Also vulnerability of the systems due to new information technologies is an important topic. In this paper we discuss development and usage of Information Systems with regard to the security aspects associated to the software development lifecycle. We present our approach on examples of a user authentication process in logistics.
{"title":"Information Systems Development and Usage with Consideration of Privacy and Cyber Security Aspects","authors":"Janusz Jablonski, S. Robak","doi":"10.15439/2019F261","DOIUrl":"https://doi.org/10.15439/2019F261","url":null,"abstract":"One of the contemporary problems, and at the same time a challenge, with development und usage of supply chain Information Systems are the issues associated with privacy and cyber security, which emerged due to new requirements of legal regulations and directives. The human factor belongs to the biggest risks within these issues. Leak of information, phishing, unauthorized access are the main problems. Also vulnerability of the systems due to new information technologies is an important topic. In this paper we discuss development and usage of Information Systems with regard to the security aspects associated to the software development lifecycle. We present our approach on examples of a user authentication process in logistics.","PeriodicalId":168208,"journal":{"name":"2019 Federated Conference on Computer Science and Information Systems (FedCSIS)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115908487","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}
Augmented Reality and Gamification are displaying beneficial effects to enhance user experience and performance in many domains. They are widespread across many areas like education, industrial training, marketing, and services. However, the idea of combining the two approaches for an innovative training instrument is fairly new, especially in assembly training. Moreover, learning about the effects of gamification on human, user engagement, in particular, is a complicated subject. There have been several efforts toward this direction, yet the overall situation is still nascent. In this work, we present a gamified augmented reality training for an industrial task and investigate user engagement effect while training with the gamified and the nongamified system. The result shows that people perform better and engage to a greater degree in the gamified design.
{"title":"Gamified Augmented Reality Training for An Assembly Task: A Study About User Engagement","authors":"D. Nguyen, G. Meixner","doi":"10.15439/2019F136","DOIUrl":"https://doi.org/10.15439/2019F136","url":null,"abstract":"Augmented Reality and Gamification are displaying beneficial effects to enhance user experience and performance in many domains. They are widespread across many areas like education, industrial training, marketing, and services. However, the idea of combining the two approaches for an innovative training instrument is fairly new, especially in assembly training. Moreover, learning about the effects of gamification on human, user engagement, in particular, is a complicated subject. There have been several efforts toward this direction, yet the overall situation is still nascent. In this work, we present a gamified augmented reality training for an industrial task and investigate user engagement effect while training with the gamified and the nongamified system. The result shows that people perform better and engage to a greater degree in the gamified design.","PeriodicalId":168208,"journal":{"name":"2019 Federated Conference on Computer Science and Information Systems (FedCSIS)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127827491","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}
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