Pub Date : 2015-11-12DOI: 10.1109/ICDIPC.2015.7323035
A. I. Obasa, N. Salim, Atif Khan
A Web forum is an online community that connects people with common interest together. Within the forum, members interact to share knowledge, expertise and resources. A major issue in detecting web forum answers is to establish a good relationship between the question and the candidate answer. This relationship is often established using lexical features. Web forum text, unlike news articles, is faced with noise challenges, and this hinders the performance of lexical features. In this paper, we investigate the effect of noise on most of the common lexical features used in mining web forum answers with a view of normalizing it to enhance the performance of the features. We propose 13 lexical features for exploration. These features belong to four different quality dimensions that can guarantee good answers. We empirically address the following questions in the paper. What category of noise is more rampant in web forum? What lexical mining features are more susceptible to noise? Will normalization of forum corpus enhance the performance of lexical features in detecting web forum answers? We used three publicly available datasets of varying technical degrees for the experiments. The experimental results revealed that proper normalization of web forum corpora can yield up to 9% increase in the performance of the lexical features.
{"title":"Enhanced lexicon based model for web forum answer detection","authors":"A. I. Obasa, N. Salim, Atif Khan","doi":"10.1109/ICDIPC.2015.7323035","DOIUrl":"https://doi.org/10.1109/ICDIPC.2015.7323035","url":null,"abstract":"A Web forum is an online community that connects people with common interest together. Within the forum, members interact to share knowledge, expertise and resources. A major issue in detecting web forum answers is to establish a good relationship between the question and the candidate answer. This relationship is often established using lexical features. Web forum text, unlike news articles, is faced with noise challenges, and this hinders the performance of lexical features. In this paper, we investigate the effect of noise on most of the common lexical features used in mining web forum answers with a view of normalizing it to enhance the performance of the features. We propose 13 lexical features for exploration. These features belong to four different quality dimensions that can guarantee good answers. We empirically address the following questions in the paper. What category of noise is more rampant in web forum? What lexical mining features are more susceptible to noise? Will normalization of forum corpus enhance the performance of lexical features in detecting web forum answers? We used three publicly available datasets of varying technical degrees for the experiments. The experimental results revealed that proper normalization of web forum corpora can yield up to 9% increase in the performance of the lexical features.","PeriodicalId":339685,"journal":{"name":"2015 Fifth International Conference on Digital Information Processing and Communications (ICDIPC)","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117126639","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 : 2015-11-12DOI: 10.1109/ICDIPC.2015.7323034
Raid Saabni
Automatic handwriting recognition of digit strings, is of academic and commercial interest. Current algorithms are already quite good at learning to recognize handwritten digits, which enables to use them for sorting letters and reading personal checks. Neural networks are a powerful technology for classification of visual inputs arising from documents, and have been extensively used in many fields due to their ability to approximate complex nonlinear mappings directly from the input sample. Different variations of Multi-Layer Neural Networks (MLNN), using back propagation training algorithm, yield a very high recognition rates on handwritten digits benchmarks, but lacks the aspect of speed in training time. Learning time is an important factor while designing any computational intelligent algorithm for classifications, especially when online improving by adapting new samples is needed. Extreme Learning Machine (ELM) has been proposed as an alternative ANN, which significantly reduce the amount of time needed to train a MLNN and has been widely used for many applications. The ELM analytical process of learning reduces the time of learning comparing to back propagation by avoiding the process of iterative learning. In this paper, we present a process which boosts few Extreme learning machines using Ada-boosting in order to improve the recognition rates iteratively. A pre-processing step is used to improve the ability of the ELM, and special weighting process to improve the boosting process. To evaluate the presented approach, we have used the (HDRC 2013) data-set which have bee used at the 2014 competition on handwritten digit string recognition organized in conjunction with ICFHR2014 of Western Arabic digit string recognition with varying length. Very high accurate results in terms of very low error rates while keeping efficient time of online training were achieved by the presented approach, which enables on demand time/precision tradeoff.
{"title":"Ada-boosting Extreme learning machines for handwritten digit and digit strings recognition","authors":"Raid Saabni","doi":"10.1109/ICDIPC.2015.7323034","DOIUrl":"https://doi.org/10.1109/ICDIPC.2015.7323034","url":null,"abstract":"Automatic handwriting recognition of digit strings, is of academic and commercial interest. Current algorithms are already quite good at learning to recognize handwritten digits, which enables to use them for sorting letters and reading personal checks. Neural networks are a powerful technology for classification of visual inputs arising from documents, and have been extensively used in many fields due to their ability to approximate complex nonlinear mappings directly from the input sample. Different variations of Multi-Layer Neural Networks (MLNN), using back propagation training algorithm, yield a very high recognition rates on handwritten digits benchmarks, but lacks the aspect of speed in training time. Learning time is an important factor while designing any computational intelligent algorithm for classifications, especially when online improving by adapting new samples is needed. Extreme Learning Machine (ELM) has been proposed as an alternative ANN, which significantly reduce the amount of time needed to train a MLNN and has been widely used for many applications. The ELM analytical process of learning reduces the time of learning comparing to back propagation by avoiding the process of iterative learning. In this paper, we present a process which boosts few Extreme learning machines using Ada-boosting in order to improve the recognition rates iteratively. A pre-processing step is used to improve the ability of the ELM, and special weighting process to improve the boosting process. To evaluate the presented approach, we have used the (HDRC 2013) data-set which have bee used at the 2014 competition on handwritten digit string recognition organized in conjunction with ICFHR2014 of Western Arabic digit string recognition with varying length. Very high accurate results in terms of very low error rates while keeping efficient time of online training were achieved by the presented approach, which enables on demand time/precision tradeoff.","PeriodicalId":339685,"journal":{"name":"2015 Fifth International Conference on Digital Information Processing and Communications (ICDIPC)","volume":"346 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124274371","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 : 2015-11-12DOI: 10.1109/ICDIPC.2015.7323009
R. Abe, Y. Iwanami
MFSK (M-ary Frequency Shift Keying) signal has a constant envelope and is suited to power efficient nonlinear amplification. However, the application of MFSK signals to spectrally efficient and reliable MIMO (Multiple Input Multiple Output) communication schemes has not been so popular up to now. Maybe this comes from the fact that the signal processing for spatially multiplexed MIMO signal is usually done using linear matrix algebra and the application of linear signal processing techniques to nonlinear FM signals such as MFSK is difficult. In this paper, we study the coherent detection of MFSK signals based on MLD (Maximum Likelihood Detection) approach on MIMO frequency selective channels. In the proposed receiver, the receive replica signal which is frequency and phase synchronized is generated and the signal distance between the receive signal and the receive replica signal is minimized. By extending the observation length of receive signal, we improved the BER characteristics. We also reduced the complexity of MLD by using the SE (Schnorr Euchner) algorithm of Sphere Decoding to obtain ML (Maximum Likelihood) solution.
{"title":"Coherent MFSK detection on MIMO frequency selective channels","authors":"R. Abe, Y. Iwanami","doi":"10.1109/ICDIPC.2015.7323009","DOIUrl":"https://doi.org/10.1109/ICDIPC.2015.7323009","url":null,"abstract":"MFSK (M-ary Frequency Shift Keying) signal has a constant envelope and is suited to power efficient nonlinear amplification. However, the application of MFSK signals to spectrally efficient and reliable MIMO (Multiple Input Multiple Output) communication schemes has not been so popular up to now. Maybe this comes from the fact that the signal processing for spatially multiplexed MIMO signal is usually done using linear matrix algebra and the application of linear signal processing techniques to nonlinear FM signals such as MFSK is difficult. In this paper, we study the coherent detection of MFSK signals based on MLD (Maximum Likelihood Detection) approach on MIMO frequency selective channels. In the proposed receiver, the receive replica signal which is frequency and phase synchronized is generated and the signal distance between the receive signal and the receive replica signal is minimized. By extending the observation length of receive signal, we improved the BER characteristics. We also reduced the complexity of MLD by using the SE (Schnorr Euchner) algorithm of Sphere Decoding to obtain ML (Maximum Likelihood) solution.","PeriodicalId":339685,"journal":{"name":"2015 Fifth International Conference on Digital Information Processing and Communications (ICDIPC)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125649799","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 : 2015-11-12DOI: 10.1109/ICDIPC.2015.7323008
M. E. Bayrakdar, A. Çalhan
Recent studies have revealed that due to the increasing number of wireless users, spectrum scarcity problem has arisen. In order to alleviate this problem, cognitive radio technology has emerged with the aim of using available spectrum in an opportunistic manner by secondary users. While utilizing licensed spectrum, it is inevitable for secondary users not to cause any interference to the primary users. Once the primary user activity is detected on the licensed channel at the time of on-going transmission of secondary user, secondary user must either change the licensed spectrum or stop its transmission. This case of changing spectrum by secondary user is known as spectrum handoff. In this paper, fuzzy logic based spectrum handoff decision is carried out by using data rate, channel usage, and priority. Different data traffics such as audio, and video are considered for secondary users. In order to simulate data traffics, two different simulation scenarios are realized. Besides, several priority classes are taken into account for urgent and real-time communications. In the proposed system, it is seen that accurate spectrum handoff decisions are made for different traffic types.
{"title":"Fuzzy logic based spectrum handoff decision for prioritized secondary users in cognitive radio networks","authors":"M. E. Bayrakdar, A. Çalhan","doi":"10.1109/ICDIPC.2015.7323008","DOIUrl":"https://doi.org/10.1109/ICDIPC.2015.7323008","url":null,"abstract":"Recent studies have revealed that due to the increasing number of wireless users, spectrum scarcity problem has arisen. In order to alleviate this problem, cognitive radio technology has emerged with the aim of using available spectrum in an opportunistic manner by secondary users. While utilizing licensed spectrum, it is inevitable for secondary users not to cause any interference to the primary users. Once the primary user activity is detected on the licensed channel at the time of on-going transmission of secondary user, secondary user must either change the licensed spectrum or stop its transmission. This case of changing spectrum by secondary user is known as spectrum handoff. In this paper, fuzzy logic based spectrum handoff decision is carried out by using data rate, channel usage, and priority. Different data traffics such as audio, and video are considered for secondary users. In order to simulate data traffics, two different simulation scenarios are realized. Besides, several priority classes are taken into account for urgent and real-time communications. In the proposed system, it is seen that accurate spectrum handoff decisions are made for different traffic types.","PeriodicalId":339685,"journal":{"name":"2015 Fifth International Conference on Digital Information Processing and Communications (ICDIPC)","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133126409","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 : 2015-11-12DOI: 10.1109/ICDIPC.2015.7323012
Mahamed G. H. Omran, M. Clerc
A novel, tuning-free, population-based simplex method for continuous function optimization is proposed. The proposed method, called Adaptive Population-based Simplex (APS), uses a population from which different simplexes are selected. In addition, a local search is performed using a hyper-sphere generated around the best individual in a simplex. The approach is easy to code and easy to understand. APS is compared with four state-of-the-art approaches on five real-world problems. The experimental results show that APS generally performs better than the other methods on the test problems.
{"title":"The Adaptive Population-based Simplex method","authors":"Mahamed G. H. Omran, M. Clerc","doi":"10.1109/ICDIPC.2015.7323012","DOIUrl":"https://doi.org/10.1109/ICDIPC.2015.7323012","url":null,"abstract":"A novel, tuning-free, population-based simplex method for continuous function optimization is proposed. The proposed method, called Adaptive Population-based Simplex (APS), uses a population from which different simplexes are selected. In addition, a local search is performed using a hyper-sphere generated around the best individual in a simplex. The approach is easy to code and easy to understand. APS is compared with four state-of-the-art approaches on five real-world problems. The experimental results show that APS generally performs better than the other methods on the test problems.","PeriodicalId":339685,"journal":{"name":"2015 Fifth International Conference on Digital Information Processing and Communications (ICDIPC)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125820495","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 : 2015-11-12DOI: 10.1109/ICDIPC.2015.7323040
Basil M. Idrees, Omar Farooq
Muscle fatigue causes numerous injuries among workers in industries involving mechanical labour each year. This study explores a new feature based on energy of detail wavelet coefficient for muscle fatigue detection in the upper limb. The muscle fatigue data was generated after isometric muscle action. 7 subjects underwent 3 trails each using 3 channels corresponding to Biceps Brachii, Extensor Digitorum Communis and Flexor Carpi Radialis muscle respectively. It was found that the energy of detail coefficients of 3rd, 4th and 5th level of wavelet decomposition (15.625-125 Hz) increases as the muscle fatigue level increases. Moreover, it was also found that the intercept of regression curve plotted to approximate this increase and the rate of increase of the energy, had maximum value for the energy of 3rd level of wavelet decomposition followed by 4th and 5th level resp. To detect the onset of fatigue, the energy of coefficients of frequency 15.6-62.5 Hz at the start and end of duration of time for which the isometric contraction is performed is considered. The fatigue was detected among subjects when this average final energy value was approximately five times the initial value for 15.6-62.5 Hz range.
{"title":"Estimation of muscle fatigue using wavelet decomposition","authors":"Basil M. Idrees, Omar Farooq","doi":"10.1109/ICDIPC.2015.7323040","DOIUrl":"https://doi.org/10.1109/ICDIPC.2015.7323040","url":null,"abstract":"Muscle fatigue causes numerous injuries among workers in industries involving mechanical labour each year. This study explores a new feature based on energy of detail wavelet coefficient for muscle fatigue detection in the upper limb. The muscle fatigue data was generated after isometric muscle action. 7 subjects underwent 3 trails each using 3 channels corresponding to Biceps Brachii, Extensor Digitorum Communis and Flexor Carpi Radialis muscle respectively. It was found that the energy of detail coefficients of 3rd, 4th and 5th level of wavelet decomposition (15.625-125 Hz) increases as the muscle fatigue level increases. Moreover, it was also found that the intercept of regression curve plotted to approximate this increase and the rate of increase of the energy, had maximum value for the energy of 3rd level of wavelet decomposition followed by 4th and 5th level resp. To detect the onset of fatigue, the energy of coefficients of frequency 15.6-62.5 Hz at the start and end of duration of time for which the isometric contraction is performed is considered. The fatigue was detected among subjects when this average final energy value was approximately five times the initial value for 15.6-62.5 Hz range.","PeriodicalId":339685,"journal":{"name":"2015 Fifth International Conference on Digital Information Processing and Communications (ICDIPC)","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121545614","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 : 2015-11-12DOI: 10.1109/ICDIPC.2015.7323039
Ying-Yin Huang, Sandro Ropelato, M. Menozzi
In this study, a fully automatic vision screening system has been established. The present installation enables the testee to accomplish several vision tests in a self-examination environment, without requiring the assistance of a supervisor or examiner. Included vision tests are far- and near- visual acuity, color vision, stereo vision, contrast vision, and visual field test. Specifically designed vision test charts are used in order to provide an easy-to-understand task for the testee to perform. The screening system delivers an ergonomic task design regarding the user interface which includes the input device, software interface, and the test procedure. The whole system is portable and easy for setting up in various test environments. Test results are evaluated in real time by the computerized program and further provide the testee a printout sheet with examination results and necessary recommendations. Such a system is used for large vision screening campaigns in organizations and may be used in smart-home applications for self-health control.
{"title":"Fully automatic and computerized self-vision-screening system: Vision at own — An E-health service of self vision examination and screening","authors":"Ying-Yin Huang, Sandro Ropelato, M. Menozzi","doi":"10.1109/ICDIPC.2015.7323039","DOIUrl":"https://doi.org/10.1109/ICDIPC.2015.7323039","url":null,"abstract":"In this study, a fully automatic vision screening system has been established. The present installation enables the testee to accomplish several vision tests in a self-examination environment, without requiring the assistance of a supervisor or examiner. Included vision tests are far- and near- visual acuity, color vision, stereo vision, contrast vision, and visual field test. Specifically designed vision test charts are used in order to provide an easy-to-understand task for the testee to perform. The screening system delivers an ergonomic task design regarding the user interface which includes the input device, software interface, and the test procedure. The whole system is portable and easy for setting up in various test environments. Test results are evaluated in real time by the computerized program and further provide the testee a printout sheet with examination results and necessary recommendations. Such a system is used for large vision screening campaigns in organizations and may be used in smart-home applications for self-health control.","PeriodicalId":339685,"journal":{"name":"2015 Fifth International Conference on Digital Information Processing and Communications (ICDIPC)","volume":"114 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132868617","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 : 2015-11-12DOI: 10.1109/ICDIPC.2015.7322997
Jamilah Hamid, N. Ubaidullah, K. Samsudin, Aslina Saad
Developing virtual reality applications is more challenging compared to developing 2D or 3D multimedia applications as the former requires greater design details. The challenge becomes more intense when the VR applications will be deployed in diagnosing tasks. Against this backdrop, this paper discusses the design of VR application called `Web Based-Non Immersive Virtual Environment Application' (WB-NIVEA) that will be used to diagnose dyslexic children's potential. The design principles of WB-NIVEA is based on Sutcliffe's VR methodology, involving a series of phases: i) determining the type of VR, ii) selecting the appropriate modalities and interaction devices, iii) creating and modeling the 3D objects, iv) creating the proper terrains, and v) determining the type of agent. To make WB-NIVEA more robust, several optimization techniques were utilized. The design approach used in designing WB-NIVEA can be used as guidelines by application developers to develop non-immersive desktop virtual reality applications.
{"title":"Designing a web based non-immersive Virtual Environment Application (WB-NIVEA) for diagnosing dyslexic children' potential","authors":"Jamilah Hamid, N. Ubaidullah, K. Samsudin, Aslina Saad","doi":"10.1109/ICDIPC.2015.7322997","DOIUrl":"https://doi.org/10.1109/ICDIPC.2015.7322997","url":null,"abstract":"Developing virtual reality applications is more challenging compared to developing 2D or 3D multimedia applications as the former requires greater design details. The challenge becomes more intense when the VR applications will be deployed in diagnosing tasks. Against this backdrop, this paper discusses the design of VR application called `Web Based-Non Immersive Virtual Environment Application' (WB-NIVEA) that will be used to diagnose dyslexic children's potential. The design principles of WB-NIVEA is based on Sutcliffe's VR methodology, involving a series of phases: i) determining the type of VR, ii) selecting the appropriate modalities and interaction devices, iii) creating and modeling the 3D objects, iv) creating the proper terrains, and v) determining the type of agent. To make WB-NIVEA more robust, several optimization techniques were utilized. The design approach used in designing WB-NIVEA can be used as guidelines by application developers to develop non-immersive desktop virtual reality applications.","PeriodicalId":339685,"journal":{"name":"2015 Fifth International Conference on Digital Information Processing and Communications (ICDIPC)","volume":"66 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133496027","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 : 2015-11-12DOI: 10.1109/ICDIPC.2015.7323019
Tarek Alloui, I. Boussebough, A. Chaoui
User profiles and interests have become essential for personalizing information search and retrieval. Indeed, traditional Information Retrieval Systems (IRS) don't integrate the user in the search process. Also, users do not always find what they need after a single query. Instead, they often issue multiple queries, incorporating what they learned from the previous results to iterate and refine how they express their information needs. So we rely on this process to learn the user information needs without asking him explicitly. This is achieved by capturing his judgments on the retrieved results. We consider also, in the construction of the user interests, what he is looking for and what the user doesn't want to find in the future results to build interests that best match his information needs.
{"title":"Learning and modelling user interests using user feedback : A novel approach","authors":"Tarek Alloui, I. Boussebough, A. Chaoui","doi":"10.1109/ICDIPC.2015.7323019","DOIUrl":"https://doi.org/10.1109/ICDIPC.2015.7323019","url":null,"abstract":"User profiles and interests have become essential for personalizing information search and retrieval. Indeed, traditional Information Retrieval Systems (IRS) don't integrate the user in the search process. Also, users do not always find what they need after a single query. Instead, they often issue multiple queries, incorporating what they learned from the previous results to iterate and refine how they express their information needs. So we rely on this process to learn the user information needs without asking him explicitly. This is achieved by capturing his judgments on the retrieved results. We consider also, in the construction of the user interests, what he is looking for and what the user doesn't want to find in the future results to build interests that best match his information needs.","PeriodicalId":339685,"journal":{"name":"2015 Fifth International Conference on Digital Information Processing and Communications (ICDIPC)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117145984","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 : 2015-11-12DOI: 10.1109/ICDIPC.2015.7323004
A. Alabaichi, A. Salih
Cryptographic algorithms uniquely define the mathematical steps required to encrypt and decrypt messages in a cryptographic system. Shortly, they protect data from unauthorized access. The process of encryption is a crucial technique to ensure the protection of important electronic information and allows two parties to communicate and prevent unauthorized parties from accessing the information simultaneously. The process of encrypting information is required to be dynamic in nature to ensure protection from novel and advanced techniques used by cryptanalysts. The substitution box (S-box) is a key fundamental of contemporary symmetric cryptosystems as it provides nonlinearity to cryptosystems and enhances the security of their cryptography. This paper discusses the enhancement of the AES algorithm and describes the process, which involves the generation of dynamic S-boxes for Advance Encryption Standard (AES). The generated S-boxes are more dynamic and key-dependent which make the differential and linear cryptanalysis more difficult. NIST randomness tests and correlation coefficient were conducted on the proposed dynamic AES algorithm, their results showing that it is superior to the original AES with security verified.
{"title":"Enhance security of advance encryption standard algorithm based on key-dependent S-box","authors":"A. Alabaichi, A. Salih","doi":"10.1109/ICDIPC.2015.7323004","DOIUrl":"https://doi.org/10.1109/ICDIPC.2015.7323004","url":null,"abstract":"Cryptographic algorithms uniquely define the mathematical steps required to encrypt and decrypt messages in a cryptographic system. Shortly, they protect data from unauthorized access. The process of encryption is a crucial technique to ensure the protection of important electronic information and allows two parties to communicate and prevent unauthorized parties from accessing the information simultaneously. The process of encrypting information is required to be dynamic in nature to ensure protection from novel and advanced techniques used by cryptanalysts. The substitution box (S-box) is a key fundamental of contemporary symmetric cryptosystems as it provides nonlinearity to cryptosystems and enhances the security of their cryptography. This paper discusses the enhancement of the AES algorithm and describes the process, which involves the generation of dynamic S-boxes for Advance Encryption Standard (AES). The generated S-boxes are more dynamic and key-dependent which make the differential and linear cryptanalysis more difficult. NIST randomness tests and correlation coefficient were conducted on the proposed dynamic AES algorithm, their results showing that it is superior to the original AES with security verified.","PeriodicalId":339685,"journal":{"name":"2015 Fifth International Conference on Digital Information Processing and Communications (ICDIPC)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121126873","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：