Pub Date : 2017-09-01DOI: 10.1109/SOLI.2017.8120994
Agnese V. Ventrella, G. Piro, L. Grieco
Emerging services for Intelligent Transport Systems put the information content at the centre of the communication process, require a seamless support of mobile users, and target a real-time and asynchronous data dissemination. The Information-Centric Networking paradigm has all the potentials to fulfill these requirements, thanks to its ability to distribute contents through publish-subscribe communication mechanism, also in mobile conditions. Unfortunately, most of publish-subscribe models proposed in the literature consider static scenarios. The work presented herein formulates two publish-subscribe schemes, based on the pull-based and push-based approaches, discusses their behavior through simplified examples, and evaluates the communication overhead they incur in realistic scenarios through computer simulations.
{"title":"Information-centric publish-subscribe mechanisms for Intelligent Transportation Systems","authors":"Agnese V. Ventrella, G. Piro, L. Grieco","doi":"10.1109/SOLI.2017.8120994","DOIUrl":"https://doi.org/10.1109/SOLI.2017.8120994","url":null,"abstract":"Emerging services for Intelligent Transport Systems put the information content at the centre of the communication process, require a seamless support of mobile users, and target a real-time and asynchronous data dissemination. The Information-Centric Networking paradigm has all the potentials to fulfill these requirements, thanks to its ability to distribute contents through publish-subscribe communication mechanism, also in mobile conditions. Unfortunately, most of publish-subscribe models proposed in the literature consider static scenarios. The work presented herein formulates two publish-subscribe schemes, based on the pull-based and push-based approaches, discusses their behavior through simplified examples, and evaluates the communication overhead they incur in realistic scenarios through computer simulations.","PeriodicalId":190544,"journal":{"name":"2017 IEEE International Conference on Service Operations and Logistics, and Informatics (SOLI)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121992609","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}
Pub Date : 2017-09-01DOI: 10.1109/SOLI.2017.8120982
F. Boenzi, S. Digiesi, F. Facchini, G. Mummolo
The aim of the present paper is to give a contribution on the debate regarding the environmental impact, in terms of GHG emissions, of material handling activities performed with LPG or electrically powered forklift trucks. A model of the operations performed by the trucks, based upon a decomposition approach into elementary steps, is illustrated and data drawn from technical sheets are employed, in order to evaluate the required times and the associated energy consumption. Recharging cycles of batteries and the emissions associated with recycle / reconditioning process at their end of life are also taken into account. Comparisons are then carried out for a reference storage of units. The results obtained lead to conclude that electrically powered trucks are always advantageous over LPG powered ones with the same rated load capacity in the examined range and under the stated assumptions, both under the environmental aspect and the economic point of view, with the assumed figures of the cost of energy.
{"title":"Electric and LPG forklifts GHG assessment in material handling activities in actual operational conditions","authors":"F. Boenzi, S. Digiesi, F. Facchini, G. Mummolo","doi":"10.1109/SOLI.2017.8120982","DOIUrl":"https://doi.org/10.1109/SOLI.2017.8120982","url":null,"abstract":"The aim of the present paper is to give a contribution on the debate regarding the environmental impact, in terms of GHG emissions, of material handling activities performed with LPG or electrically powered forklift trucks. A model of the operations performed by the trucks, based upon a decomposition approach into elementary steps, is illustrated and data drawn from technical sheets are employed, in order to evaluate the required times and the associated energy consumption. Recharging cycles of batteries and the emissions associated with recycle / reconditioning process at their end of life are also taken into account. Comparisons are then carried out for a reference storage of units. The results obtained lead to conclude that electrically powered trucks are always advantageous over LPG powered ones with the same rated load capacity in the examined range and under the stated assumptions, both under the environmental aspect and the economic point of view, with the assumed figures of the cost of energy.","PeriodicalId":190544,"journal":{"name":"2017 IEEE International Conference on Service Operations and Logistics, and Informatics (SOLI)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125656736","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}
Pub Date : 2017-09-01DOI: 10.1109/SOLI.2017.8120970
I. D. R. Eberhardt, L. Teixeira, Sérgio Ronaldo Granemann, A. P. Fonseca, P.W.G. Taco, Bernardo Alves Furtado
Brazil is one of the major crops producer in the world, and second and third soybean and maize producer respectively. Among Brazilian States, Mato Grosso State represents near 23% of the national production in grains. Despite these numbers, there is no diagnosis of the static grain storage capacity at the municipal or state level. The aim of this paper is to evaluate the grain storage deficit in Mato Grosso State in Brazil using the supply-demand of facility capacity and production of major seasonal grain crops production by municipality in the 2014/2015 crop season. We apply a spatial computation by municipality and the computation by each storage unit capacity over the crop map of the State production. The results show that almost all municipalities of Mato Grosso State have deficit capacity in their grain storage facilities. The average deficit is 391,642 tons by municipality, and the total deficit in the State is greater than 35.2 million of tons. Sorriso and Rondonópolis were the worst and the best scenarios, respectively.
{"title":"Supply-demand of grain storage facilities in mato grosso state in Brazil","authors":"I. D. R. Eberhardt, L. Teixeira, Sérgio Ronaldo Granemann, A. P. Fonseca, P.W.G. Taco, Bernardo Alves Furtado","doi":"10.1109/SOLI.2017.8120970","DOIUrl":"https://doi.org/10.1109/SOLI.2017.8120970","url":null,"abstract":"Brazil is one of the major crops producer in the world, and second and third soybean and maize producer respectively. Among Brazilian States, Mato Grosso State represents near 23% of the national production in grains. Despite these numbers, there is no diagnosis of the static grain storage capacity at the municipal or state level. The aim of this paper is to evaluate the grain storage deficit in Mato Grosso State in Brazil using the supply-demand of facility capacity and production of major seasonal grain crops production by municipality in the 2014/2015 crop season. We apply a spatial computation by municipality and the computation by each storage unit capacity over the crop map of the State production. The results show that almost all municipalities of Mato Grosso State have deficit capacity in their grain storage facilities. The average deficit is 391,642 tons by municipality, and the total deficit in the State is greater than 35.2 million of tons. Sorriso and Rondonópolis were the worst and the best scenarios, respectively.","PeriodicalId":190544,"journal":{"name":"2017 IEEE International Conference on Service Operations and Logistics, and Informatics (SOLI)","volume":"80 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127100290","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}
Pub Date : 2017-09-01DOI: 10.1109/SOLI.2017.8120962
J. Janáček, Marek Kvet
Public rescue service system design is determined by deployment of limited number of service centers at positions from a given set of possible locations. The robust service system design is usually performed so that the design complies with specified scenarios by minimizing the maximal value of the objective functions corresponding to the particular scenarios. As the set of detrimental scenarios is not evaluated by probabilities of their occurrence, a question of robustness measurement arises. Within this paper, we suggest so called “price of robustness” to appraise deterioration of the standard objective function as a consequence of robustness improvement and we also introduce “gain of robustness” to asset the robustness improvement. Furthermore, we suggest a method for robust system design, which optimizes robust efficiency of the resulting solution.
{"title":"Efficient robust design of public rescue service system","authors":"J. Janáček, Marek Kvet","doi":"10.1109/SOLI.2017.8120962","DOIUrl":"https://doi.org/10.1109/SOLI.2017.8120962","url":null,"abstract":"Public rescue service system design is determined by deployment of limited number of service centers at positions from a given set of possible locations. The robust service system design is usually performed so that the design complies with specified scenarios by minimizing the maximal value of the objective functions corresponding to the particular scenarios. As the set of detrimental scenarios is not evaluated by probabilities of their occurrence, a question of robustness measurement arises. Within this paper, we suggest so called “price of robustness” to appraise deterioration of the standard objective function as a consequence of robustness improvement and we also introduce “gain of robustness” to asset the robustness improvement. Furthermore, we suggest a method for robust system design, which optimizes robust efficiency of the resulting solution.","PeriodicalId":190544,"journal":{"name":"2017 IEEE International Conference on Service Operations and Logistics, and Informatics (SOLI)","volume":"76 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131719419","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}
Pub Date : 2017-09-01DOI: 10.1109/SOLI.2017.8121000
Beatrice Di Pierro, G. Iacobellis, B. Turchiano, W. Ukovich
This paper proposes a methodology to evaluate an Intermodal Transportation System (ITS). These systems are very complex and a lot of different actors are involved. The evaluation process should take into account concurrent needs and goals. Moreover, the data and the importance of different indicators are strictly related to the judgments of individual experts. Then it is necessary to have a methodology able to collect all the independent judgments and merge them in order to evaluate the whole system performances. The paper proposes a general methodology based on the Analytic Hierarchy Process to evaluate the behavior of the ITS system. Moreover, the hierarchy including the typical factors that compose a logistic system has been identified. In order to show the effectiveness of the proposed methodology, we present a real case study consisting of the port of Trieste (Italy), the intermodal terminal and the highway connecting them. Several Key Performance Indicators are evaluated to provide assessment procedure.
{"title":"Performance assessment for intermodal transportation systems: A case study","authors":"Beatrice Di Pierro, G. Iacobellis, B. Turchiano, W. Ukovich","doi":"10.1109/SOLI.2017.8121000","DOIUrl":"https://doi.org/10.1109/SOLI.2017.8121000","url":null,"abstract":"This paper proposes a methodology to evaluate an Intermodal Transportation System (ITS). These systems are very complex and a lot of different actors are involved. The evaluation process should take into account concurrent needs and goals. Moreover, the data and the importance of different indicators are strictly related to the judgments of individual experts. Then it is necessary to have a methodology able to collect all the independent judgments and merge them in order to evaluate the whole system performances. The paper proposes a general methodology based on the Analytic Hierarchy Process to evaluate the behavior of the ITS system. Moreover, the hierarchy including the typical factors that compose a logistic system has been identified. In order to show the effectiveness of the proposed methodology, we present a real case study consisting of the port of Trieste (Italy), the intermodal terminal and the highway connecting them. Several Key Performance Indicators are evaluated to provide assessment procedure.","PeriodicalId":190544,"journal":{"name":"2017 IEEE International Conference on Service Operations and Logistics, and Informatics (SOLI)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129106776","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}
Pub Date : 2017-09-01DOI: 10.1109/SOLI.2017.8120977
João Reis, M. Amorim, N. Melão
This article investigates how omni-channel services operations are building technology-based business networks. It uses a case study research, which includes multiple sources of data collection for triangulation purposes, to study a real-life phenomenon. The results suggest that omni-channel companies are changing their landscape to business networks, looking for competitive advantages over their rivals. But this move incorporates new challenges, as it requires a transition based on operations management to allow these firms to adapt their processes and channels, in order to be able to collaborate in a heterogeneous network of firms. Another possible solution is the integration of innovation technologies that are enabling the combination of firm capabilities to underpin collaborative relationships. Previous research also suggests that service operations management in an omni-channel services context is largely unaddressed, as this discipline is essential for the edification of technology-based business networks. Thereby, this article provides real-life statements and examples of firms that are moving their service operations into a business network paradigm. Subsequently, since omni-channel services are multidisciplinary in nature, these exploratory results represent a fruitful opportunity for future research to involve other disciplines than service operations.
{"title":"Omni-channel service operations: Building technology-based business networks","authors":"João Reis, M. Amorim, N. Melão","doi":"10.1109/SOLI.2017.8120977","DOIUrl":"https://doi.org/10.1109/SOLI.2017.8120977","url":null,"abstract":"This article investigates how omni-channel services operations are building technology-based business networks. It uses a case study research, which includes multiple sources of data collection for triangulation purposes, to study a real-life phenomenon. The results suggest that omni-channel companies are changing their landscape to business networks, looking for competitive advantages over their rivals. But this move incorporates new challenges, as it requires a transition based on operations management to allow these firms to adapt their processes and channels, in order to be able to collaborate in a heterogeneous network of firms. Another possible solution is the integration of innovation technologies that are enabling the combination of firm capabilities to underpin collaborative relationships. Previous research also suggests that service operations management in an omni-channel services context is largely unaddressed, as this discipline is essential for the edification of technology-based business networks. Thereby, this article provides real-life statements and examples of firms that are moving their service operations into a business network paradigm. Subsequently, since omni-channel services are multidisciplinary in nature, these exploratory results represent a fruitful opportunity for future research to involve other disciplines than service operations.","PeriodicalId":190544,"journal":{"name":"2017 IEEE International Conference on Service Operations and Logistics, and Informatics (SOLI)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122366269","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}
Pub Date : 2017-09-01DOI: 10.1109/SOLI.2017.8120974
Thomas Hlasny, M. P. Fanti, A. M. Mangini, G. Rotunno, B. Turchiano
This paper deals with the problem of reducing fuel consumption and pollutant emissions of Heavy Duty Vehicles (HDV). The overall objective of improving the efficiency of the HDV can be obtained by employing the most advanced technologies in powertrain control and intelligent transportation systems, by taking into account road topography, traffic, weather conditions and driver behavior. This paper presents a review of the recent researches on the technologies to reduce fuel consumption and pollutant emissions for HDV. In particular, the reviewed research contributions are presented in four main areas: driver behaviour, road density evaluation, route planning and speed control.
{"title":"Optimal fuel consumption for heavy trucks: A review","authors":"Thomas Hlasny, M. P. Fanti, A. M. Mangini, G. Rotunno, B. Turchiano","doi":"10.1109/SOLI.2017.8120974","DOIUrl":"https://doi.org/10.1109/SOLI.2017.8120974","url":null,"abstract":"This paper deals with the problem of reducing fuel consumption and pollutant emissions of Heavy Duty Vehicles (HDV). The overall objective of improving the efficiency of the HDV can be obtained by employing the most advanced technologies in powertrain control and intelligent transportation systems, by taking into account road topography, traffic, weather conditions and driver behavior. This paper presents a review of the recent researches on the technologies to reduce fuel consumption and pollutant emissions for HDV. In particular, the reviewed research contributions are presented in four main areas: driver behaviour, road density evaluation, route planning and speed control.","PeriodicalId":190544,"journal":{"name":"2017 IEEE International Conference on Service Operations and Logistics, and Informatics (SOLI)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121194668","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}
Pub Date : 2017-09-01DOI: 10.1109/SOLI.2017.8120979
J. Magrath, Michael S. Brady
Real world fuel consumption and emission models are sensitive to road grade estimates. The developments of eco-routing and eco-driving solutions makes the development of large scale collections of road grade profiles of importance. Therefore, there is a need to collect accurate, large scale, road grade profiles. Existing intelligent transport systems (ITS) like Advanced Bus Transportation Systems (ABTS) provide an opportunity to collect large amounts of data for post processing development of road grade profiles. This paper explores different techniques for determining road grade estimates suited to ABTS. Five studies were replicated in this work and evaluated in real world experiments against the Google Elevation API.
{"title":"Evaluating different methods for determining road grade best suited to advanced bus transportation systems","authors":"J. Magrath, Michael S. Brady","doi":"10.1109/SOLI.2017.8120979","DOIUrl":"https://doi.org/10.1109/SOLI.2017.8120979","url":null,"abstract":"Real world fuel consumption and emission models are sensitive to road grade estimates. The developments of eco-routing and eco-driving solutions makes the development of large scale collections of road grade profiles of importance. Therefore, there is a need to collect accurate, large scale, road grade profiles. Existing intelligent transport systems (ITS) like Advanced Bus Transportation Systems (ABTS) provide an opportunity to collect large amounts of data for post processing development of road grade profiles. This paper explores different techniques for determining road grade estimates suited to ABTS. Five studies were replicated in this work and evaluated in real world experiments against the Google Elevation API.","PeriodicalId":190544,"journal":{"name":"2017 IEEE International Conference on Service Operations and Logistics, and Informatics (SOLI)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129444015","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}
Pub Date : 2017-09-01DOI: 10.1109/SOLI.2017.8120990
Martina Baglio, E. Garagiola, F. Dallari
In the pharmaceutical supply chain, all players have to ensure the highest level of service while containing costs, because of the ethical issues concerning drugs. The outsourcing of logistics should be recognized as a competitive lever, especially in this complex and highly regulated industry. Based on these premises, the research objective of this study is to investigate the relationship between the outsourcing strategies of manufacturers and the logistics services offered by Third-Party Logistics Service providers (3PLs). To achieve this objective, a multiple case study was designed to analyse the different physical distribution models adopted by pharmaceutical companies. We collected qualitative data and the subjective perceptions of several logistics directors, conducting structured interviews with 11 pharmaceutical companies and six 3PLs. We have identified three physical distribution models, on the basis of the number and location of the warehouses used (single warehouse, dual warehouse and multi-warehouse models). We discovered that there is a strict relationship between the physical distribution model adopted by pharmaceutical companies and their features (i.e. the main distribution channel, product portfolio, target service level, transport and warehousing costs and other company related issues). Our research also offers an empirical insight into the key logistic services that 3PLs should offer within the pharma industry. In conclusion, the study draws a roadmap to guide pharmaceutical companies in their strategic logistics decisions in Italy, while also considering possible future trends deriving from changes to European regulations.
{"title":"Outsourcing strategies and distribution models in Italian Pharma Supply Chain","authors":"Martina Baglio, E. Garagiola, F. Dallari","doi":"10.1109/SOLI.2017.8120990","DOIUrl":"https://doi.org/10.1109/SOLI.2017.8120990","url":null,"abstract":"In the pharmaceutical supply chain, all players have to ensure the highest level of service while containing costs, because of the ethical issues concerning drugs. The outsourcing of logistics should be recognized as a competitive lever, especially in this complex and highly regulated industry. Based on these premises, the research objective of this study is to investigate the relationship between the outsourcing strategies of manufacturers and the logistics services offered by Third-Party Logistics Service providers (3PLs). To achieve this objective, a multiple case study was designed to analyse the different physical distribution models adopted by pharmaceutical companies. We collected qualitative data and the subjective perceptions of several logistics directors, conducting structured interviews with 11 pharmaceutical companies and six 3PLs. We have identified three physical distribution models, on the basis of the number and location of the warehouses used (single warehouse, dual warehouse and multi-warehouse models). We discovered that there is a strict relationship between the physical distribution model adopted by pharmaceutical companies and their features (i.e. the main distribution channel, product portfolio, target service level, transport and warehousing costs and other company related issues). Our research also offers an empirical insight into the key logistic services that 3PLs should offer within the pharma industry. In conclusion, the study draws a roadmap to guide pharmaceutical companies in their strategic logistics decisions in Italy, while also considering possible future trends deriving from changes to European regulations.","PeriodicalId":190544,"journal":{"name":"2017 IEEE International Conference on Service Operations and Logistics, and Informatics (SOLI)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131398711","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}
Pub Date : 2017-09-01DOI: 10.1109/SOLI.2017.8120959
Kohtaroh Miyamoto, H. Takeuchi, Satoshi Masuda, Futoshi Iwama
Question-answering (QA) systems have recently shown impressive results in terms of accurately answering user questions in such situations as domain specific user questions. However, we have identified many real situations where QA systems must cope with not a single question-answering situation but rather a sequence of consecutive questions. In such cases, users often ask questions on the basis of the previous answer they have received, so the context of the questions changes on a certain level. The commonly used method to handle this problem when using a QA system is to append the current question to the previous question (append method). However, the append method is not designed to detect such context changes. To deal with such context changes, we have designed a hierarchical context supplementation QA System (HCSQ). The HCSQ handles consecutive questions by matching the current question with the hierarchical domain knowledge database structure of the previous answer and then supplements the context of the current question with the required keywords. We also show that our method can be further applied to the initial question to supplement omitted context. Experimental results show that our method substantially outperforms the state-of-the-art methods.
{"title":"Hierarchical context supplementation for consecutive question answering","authors":"Kohtaroh Miyamoto, H. Takeuchi, Satoshi Masuda, Futoshi Iwama","doi":"10.1109/SOLI.2017.8120959","DOIUrl":"https://doi.org/10.1109/SOLI.2017.8120959","url":null,"abstract":"Question-answering (QA) systems have recently shown impressive results in terms of accurately answering user questions in such situations as domain specific user questions. However, we have identified many real situations where QA systems must cope with not a single question-answering situation but rather a sequence of consecutive questions. In such cases, users often ask questions on the basis of the previous answer they have received, so the context of the questions changes on a certain level. The commonly used method to handle this problem when using a QA system is to append the current question to the previous question (append method). However, the append method is not designed to detect such context changes. To deal with such context changes, we have designed a hierarchical context supplementation QA System (HCSQ). The HCSQ handles consecutive questions by matching the current question with the hierarchical domain knowledge database structure of the previous answer and then supplements the context of the current question with the required keywords. We also show that our method can be further applied to the initial question to supplement omitted context. Experimental results show that our method substantially outperforms the state-of-the-art methods.","PeriodicalId":190544,"journal":{"name":"2017 IEEE International Conference on Service Operations and Logistics, and Informatics (SOLI)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122338959","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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