Pub Date : 2014-10-13DOI: 10.1109/ICIST.2014.6920367
Weiwei Yuan, D. Guan, Linshan Shen, Haiwei Pan
In this research, we empirically evaluate the performance of filter based feature selection using noisy data containing mislabeled samples. Mislabeled data are present in many real applications, but existing studies have not explored their influence on feature selection. We tested six well-known filter feature selection methods using datasets with pre-defined mislabeled ratios. Our results show that in most cases, feature selection performance degrades with increasing mislabeled ratios. We also evaluate the effects of mislabeled data on small size data feature selection and outline the more serious negative effects of mislabeled data. The results of this study suggest that most feature selection methods are not robust enough for noisy data containing mislabeled samples. Therefore, proper processing of noisy data before feature selection should be considered.
{"title":"An empirical study of filter-based feature selection algorithms using noisy training data","authors":"Weiwei Yuan, D. Guan, Linshan Shen, Haiwei Pan","doi":"10.1109/ICIST.2014.6920367","DOIUrl":"https://doi.org/10.1109/ICIST.2014.6920367","url":null,"abstract":"In this research, we empirically evaluate the performance of filter based feature selection using noisy data containing mislabeled samples. Mislabeled data are present in many real applications, but existing studies have not explored their influence on feature selection. We tested six well-known filter feature selection methods using datasets with pre-defined mislabeled ratios. Our results show that in most cases, feature selection performance degrades with increasing mislabeled ratios. We also evaluate the effects of mislabeled data on small size data feature selection and outline the more serious negative effects of mislabeled data. The results of this study suggest that most feature selection methods are not robust enough for noisy data containing mislabeled samples. Therefore, proper processing of noisy data before feature selection should be considered.","PeriodicalId":306383,"journal":{"name":"2014 4th IEEE International Conference on Information Science and Technology","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124853903","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 : 2014-10-13DOI: 10.1109/ICIST.2014.6920534
Y. Long, Yuanyuan Gao, Mingxi Guo, G. Zang
In this paper, the joint effect of both imperfect channel state information (CSI) and co-channel interference (CCI) on the dual-hop two-way amplify-and-forward relaying system (AF TWRS) is investigated. Assuming a Nakagami-m fading environment, we firstly obtain the effective end-to-end signal-to-interference plus noise ratio (SINR) expressions and then derive the closed-form approximate expression for the overall outage probability. Monte Carlo simulations verify the tightness of our approximation with the exact outage probability.
{"title":"Outage analysis of two-way AF relaying systems with imperfect CSI and multiple interferers over Nakagami-m fading channels","authors":"Y. Long, Yuanyuan Gao, Mingxi Guo, G. Zang","doi":"10.1109/ICIST.2014.6920534","DOIUrl":"https://doi.org/10.1109/ICIST.2014.6920534","url":null,"abstract":"In this paper, the joint effect of both imperfect channel state information (CSI) and co-channel interference (CCI) on the dual-hop two-way amplify-and-forward relaying system (AF TWRS) is investigated. Assuming a Nakagami-m fading environment, we firstly obtain the effective end-to-end signal-to-interference plus noise ratio (SINR) expressions and then derive the closed-form approximate expression for the overall outage probability. Monte Carlo simulations verify the tightness of our approximation with the exact outage probability.","PeriodicalId":306383,"journal":{"name":"2014 4th IEEE International Conference on Information Science and Technology","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121283569","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 : 2014-10-13DOI: 10.1109/ICIST.2014.6920391
Qiufu Li, Derong Chen, Jiulu Gong
In order to improve the efficiency of algorithm, parameter optimization for hyperspectral image compression algorithm of maximum error controllable has been studied in this paper. Firstly, a mathematic optimal model for the hyperspectral image compression ratio was established. Secondly, we analyzed the model and simplified it by Gaussian function. Finally, some real hyperspectral images' compression ratios were estimated using the model. Experiments show the relative error between the estimations and the simulation results is less than 5%, and 31.25% of the both results are exactly the same. In addition, the optimal model saves 70% of running time. These illustrate the high effectiveness and practicability of the optimal model.
{"title":"Parameter optimization for hyperspectral image compression algorithm of maximum error controllable","authors":"Qiufu Li, Derong Chen, Jiulu Gong","doi":"10.1109/ICIST.2014.6920391","DOIUrl":"https://doi.org/10.1109/ICIST.2014.6920391","url":null,"abstract":"In order to improve the efficiency of algorithm, parameter optimization for hyperspectral image compression algorithm of maximum error controllable has been studied in this paper. Firstly, a mathematic optimal model for the hyperspectral image compression ratio was established. Secondly, we analyzed the model and simplified it by Gaussian function. Finally, some real hyperspectral images' compression ratios were estimated using the model. Experiments show the relative error between the estimations and the simulation results is less than 5%, and 31.25% of the both results are exactly the same. In addition, the optimal model saves 70% of running time. These illustrate the high effectiveness and practicability of the optimal model.","PeriodicalId":306383,"journal":{"name":"2014 4th IEEE International Conference on Information Science and Technology","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127840717","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}
With the development of science and technology, we have collected a lot of trajectory data. Obtaining useful pattern from these data is an important direction of the trajectory data mining. In order to find these models, a good distance measurement between trajectories of moving object may be necessary. In this paper, we propose a new method of distance measurement, the Grid-Based DTW (GDTW). The trajectory will be converted into continuous grid cell, then get the distance by Dynamic Time Warping (DTW) measurement. This method can more effectively measure the distance of two trajectory. Experiment results show the effectiveness of our proposed means.
{"title":"Using DTW to measure trajectory distance in grid space","authors":"Yushun Wang, Peng Lei, Hanhai Zhou, Xiaoping Wang, Min Ma, Xiaoyun Chen","doi":"10.1109/ICIST.2014.6920353","DOIUrl":"https://doi.org/10.1109/ICIST.2014.6920353","url":null,"abstract":"With the development of science and technology, we have collected a lot of trajectory data. Obtaining useful pattern from these data is an important direction of the trajectory data mining. In order to find these models, a good distance measurement between trajectories of moving object may be necessary. In this paper, we propose a new method of distance measurement, the Grid-Based DTW (GDTW). The trajectory will be converted into continuous grid cell, then get the distance by Dynamic Time Warping (DTW) measurement. This method can more effectively measure the distance of two trajectory. Experiment results show the effectiveness of our proposed means.","PeriodicalId":306383,"journal":{"name":"2014 4th IEEE International Conference on Information Science and Technology","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125430241","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 : 2014-10-13DOI: 10.1109/ICIST.2014.6920545
Yanyong Su, Dong Xue, M. Liu, Xiaolin Jiang
To settle the issues that peak to average power ratio (PAPR) in OFDM systems are too high, the paper proposes a fresh algorithm of reducing PAPR by using the improved selected mapping (SLM) and extended hamming codes. Our combining strategy can be used for both error correction (EC) and PAPR reductions. The transmitted OFDM signals are selected which achieves minimum PAPR, from the set of extended hamming codes. The received signal can be decoded with no need of any side information, and EC function helps to reduce the bit error rate (BER). Both the theoretical analysis and simulation results prove that this novel method can successfully reduce PAPR in OFDM system, in the meantime, the system has good performance of BER simultaneously.
{"title":"Combined selective mapping and extended hamming codes for PAPR reduction in OFDM systems","authors":"Yanyong Su, Dong Xue, M. Liu, Xiaolin Jiang","doi":"10.1109/ICIST.2014.6920545","DOIUrl":"https://doi.org/10.1109/ICIST.2014.6920545","url":null,"abstract":"To settle the issues that peak to average power ratio (PAPR) in OFDM systems are too high, the paper proposes a fresh algorithm of reducing PAPR by using the improved selected mapping (SLM) and extended hamming codes. Our combining strategy can be used for both error correction (EC) and PAPR reductions. The transmitted OFDM signals are selected which achieves minimum PAPR, from the set of extended hamming codes. The received signal can be decoded with no need of any side information, and EC function helps to reduce the bit error rate (BER). Both the theoretical analysis and simulation results prove that this novel method can successfully reduce PAPR in OFDM system, in the meantime, the system has good performance of BER simultaneously.","PeriodicalId":306383,"journal":{"name":"2014 4th IEEE International Conference on Information Science and Technology","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116008045","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 : 2014-04-26DOI: 10.1109/ICIST.2014.6920402
Rumei Zhang, Hao Liu, Hongyi Li
Soft tissue sarcomas which are serious hazard to human are aggressive and difficult to control. Traditional ways of treatment can bring great pain to the patients. Radiofrequency(RF) ablation has become a feasible and minimally invasive treatment for soft tissue sarcomas. However, there are few literatures to study the energy and temperature distributions in the sarcomas. In this paper, sarcomas simulation model was established based on the prototype of gastrointestinal stromal sarcoma. Parameters of electric and thermal properties of the sarcomas were set appropriately by considering its thermal sensitivity. Temperature of 323.15K is chosen as a border edge to evaluate the efficacy of RF ablation. Results indicate that the maximum temperature point occurs at the apex of RF probe. Growth of temperature at the probe apex decreases with the increment of ablation time. In addition, a local maximum temperature point is presented at the interface of the sarcoma and muscle tissue, which is meaningful for RF ablation to keep the normal tissue undamaged. Effects of electrode insertion depth on the RF ablation were studied in this paper. Results indicate that area of tumor cell necrosis is expanded gradually with the increase of insertion depth and RF power radiated. However, the temperature of the apex of probe drops with the increasing of the depth inserted. As a result, probe insertion depth and RF ablation power must be cooperated to achieve desired RF ablation effect.
{"title":"Finite element analysis of radiofrequency ablation process in soft tissue sarcomas","authors":"Rumei Zhang, Hao Liu, Hongyi Li","doi":"10.1109/ICIST.2014.6920402","DOIUrl":"https://doi.org/10.1109/ICIST.2014.6920402","url":null,"abstract":"Soft tissue sarcomas which are serious hazard to human are aggressive and difficult to control. Traditional ways of treatment can bring great pain to the patients. Radiofrequency(RF) ablation has become a feasible and minimally invasive treatment for soft tissue sarcomas. However, there are few literatures to study the energy and temperature distributions in the sarcomas. In this paper, sarcomas simulation model was established based on the prototype of gastrointestinal stromal sarcoma. Parameters of electric and thermal properties of the sarcomas were set appropriately by considering its thermal sensitivity. Temperature of 323.15K is chosen as a border edge to evaluate the efficacy of RF ablation. Results indicate that the maximum temperature point occurs at the apex of RF probe. Growth of temperature at the probe apex decreases with the increment of ablation time. In addition, a local maximum temperature point is presented at the interface of the sarcoma and muscle tissue, which is meaningful for RF ablation to keep the normal tissue undamaged. Effects of electrode insertion depth on the RF ablation were studied in this paper. Results indicate that area of tumor cell necrosis is expanded gradually with the increase of insertion depth and RF power radiated. However, the temperature of the apex of probe drops with the increasing of the depth inserted. As a result, probe insertion depth and RF ablation power must be cooperated to achieve desired RF ablation effect.","PeriodicalId":306383,"journal":{"name":"2014 4th IEEE International Conference on Information Science and Technology","volume":"108 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115394764","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 : 2014-04-26DOI: 10.1109/ICIST.2014.6920520
Zhang Yu, Liu Feng
Air-ground and mobile wireless communications are widely used in military, industrial and business fields. The paper focuses on how to jam the communication efficiently. The targeted communication system is consisted with UAV and Soldier nodes. All the nodes in the system are moving in a certain pattern. It has communications between air and ground and in mobile wireless networks. The traditional jamming strategies are no longer efficient for this case. So we introduce a Restricting Moving Range (RMR) jamming method. The RMR method can be used to jam the air-ground communication and mobile wireless communication, in which the soldiers are moving in random pattern or group pattern. The simulation shows that RMR produces a good result when the soldiers are moving in random pattern and give out an acceptable result when soldiers are moving in group pattern.
{"title":"RMR method for jamming air-ground and mobile wireless communication","authors":"Zhang Yu, Liu Feng","doi":"10.1109/ICIST.2014.6920520","DOIUrl":"https://doi.org/10.1109/ICIST.2014.6920520","url":null,"abstract":"Air-ground and mobile wireless communications are widely used in military, industrial and business fields. The paper focuses on how to jam the communication efficiently. The targeted communication system is consisted with UAV and Soldier nodes. All the nodes in the system are moving in a certain pattern. It has communications between air and ground and in mobile wireless networks. The traditional jamming strategies are no longer efficient for this case. So we introduce a Restricting Moving Range (RMR) jamming method. The RMR method can be used to jam the air-ground communication and mobile wireless communication, in which the soldiers are moving in random pattern or group pattern. The simulation shows that RMR produces a good result when the soldiers are moving in random pattern and give out an acceptable result when soldiers are moving in group pattern.","PeriodicalId":306383,"journal":{"name":"2014 4th IEEE International Conference on Information Science and Technology","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124271440","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 : 2014-04-26DOI: 10.1109/ICIST.2014.6920401
Zhisheng Xu, Su Zhang, Wei Ni, Yanhui Yang, Jichun Bu
As there are unbalanced communications between each computing core in multi-core system, a dynamic weight arbiter for networks-on-chip is designed and implemented in this paper. This arbiter uses a simple method to realize static arbitration mechanism based on Lottery algorithm, and on this basis, according to the congestion situation detected in all directions, it uses turn weights approach to dynamically adjust the weights in each direction. This paper has designed three experiments featuring simulating unbalanced communication between multi cores which indicates that dynamic arbitration mechanism based on routing node of dynamic weight arbiter can effectively improve performance of networks-on-chip in case of unbalanced communication between multi cores.
{"title":"Design and implementation of a dynamic weight arbiter for networks-on-chip","authors":"Zhisheng Xu, Su Zhang, Wei Ni, Yanhui Yang, Jichun Bu","doi":"10.1109/ICIST.2014.6920401","DOIUrl":"https://doi.org/10.1109/ICIST.2014.6920401","url":null,"abstract":"As there are unbalanced communications between each computing core in multi-core system, a dynamic weight arbiter for networks-on-chip is designed and implemented in this paper. This arbiter uses a simple method to realize static arbitration mechanism based on Lottery algorithm, and on this basis, according to the congestion situation detected in all directions, it uses turn weights approach to dynamically adjust the weights in each direction. This paper has designed three experiments featuring simulating unbalanced communication between multi cores which indicates that dynamic arbitration mechanism based on routing node of dynamic weight arbiter can effectively improve performance of networks-on-chip in case of unbalanced communication between multi cores.","PeriodicalId":306383,"journal":{"name":"2014 4th IEEE International Conference on Information Science and Technology","volume":"105 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121249980","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 : 2014-04-26DOI: 10.1109/ICIST.2014.6920366
Yong Lu, Shaohe Lv, Xiaodong Wang, Xingming Zhou
Traditional wireless relay networks have large end-to-end time delay and low throughput because of the limit that it can't receive and forward at the same time. In this paper, we proposed IWFR: Immediate Wireless Full-Duplex Relay which exploits the advantages of full-duplex to shorten the end-to-end time delay and improve the throughput. At the same time, we designed a new implicit acknowledgement mechanism, which can eliminate the ACK overheads and evidently improve the throughput of the relay. To implement IWFR, we also modified the full-duplex node architecture to make it support for immediate relay. Simulation shows that IWFR shortens the end-to-end time delay by 60% on average and improves the throughput to 240% of the original relay.
{"title":"IWFR: Exploiting full-duplex in wireless relay networks","authors":"Yong Lu, Shaohe Lv, Xiaodong Wang, Xingming Zhou","doi":"10.1109/ICIST.2014.6920366","DOIUrl":"https://doi.org/10.1109/ICIST.2014.6920366","url":null,"abstract":"Traditional wireless relay networks have large end-to-end time delay and low throughput because of the limit that it can't receive and forward at the same time. In this paper, we proposed IWFR: Immediate Wireless Full-Duplex Relay which exploits the advantages of full-duplex to shorten the end-to-end time delay and improve the throughput. At the same time, we designed a new implicit acknowledgement mechanism, which can eliminate the ACK overheads and evidently improve the throughput of the relay. To implement IWFR, we also modified the full-duplex node architecture to make it support for immediate relay. Simulation shows that IWFR shortens the end-to-end time delay by 60% on average and improves the throughput to 240% of the original relay.","PeriodicalId":306383,"journal":{"name":"2014 4th IEEE International Conference on Information Science and Technology","volume":"73 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127220879","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 : 2014-04-26DOI: 10.1109/ICIST.2014.6920588
Boya Liu, Feng Liu, Wenhui Lin, Qin Wang
We present a novel correlation model for measuring web quality based on user perception. In contrast to previous methods, our approach is based on correlation analysis of web quality metrics at user-perceived level. Our model has three significant characteristics. First, we extract several web quality metrics which are closely related to user's subjective feelings. Second, by means of Pearson correlation analysis, we acquire five key metrics best reflecting web quality. Third, based on selected web quality metrics, we propose a novel comprehensive assessment model of web quality. We demonstrate the effectiveness of our approach by evaluating comprehensive assessment scores. A series of real-world experiments are conducted to qualitatively evaluate the effectiveness of our model. Results show that our model can be more intuitive to reflect user's quality of experience (QoE).
{"title":"Correlation model for user perceived web quality","authors":"Boya Liu, Feng Liu, Wenhui Lin, Qin Wang","doi":"10.1109/ICIST.2014.6920588","DOIUrl":"https://doi.org/10.1109/ICIST.2014.6920588","url":null,"abstract":"We present a novel correlation model for measuring web quality based on user perception. In contrast to previous methods, our approach is based on correlation analysis of web quality metrics at user-perceived level. Our model has three significant characteristics. First, we extract several web quality metrics which are closely related to user's subjective feelings. Second, by means of Pearson correlation analysis, we acquire five key metrics best reflecting web quality. Third, based on selected web quality metrics, we propose a novel comprehensive assessment model of web quality. We demonstrate the effectiveness of our approach by evaluating comprehensive assessment scores. A series of real-world experiments are conducted to qualitatively evaluate the effectiveness of our model. Results show that our model can be more intuitive to reflect user's quality of experience (QoE).","PeriodicalId":306383,"journal":{"name":"2014 4th IEEE International Conference on Information Science and Technology","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124899271","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：