Purvashi Baynath, K. Soyjaudah, Maleika Heenaye-Mamode Khan
{"title":"Keystroke recognition using chaotic neural network","authors":"Purvashi Baynath, K. Soyjaudah, Maleika Heenaye-Mamode Khan","doi":"10.1109/ICSPIS.2017.8311590","DOIUrl":"https://doi.org/10.1109/ICSPIS.2017.8311590","url":null,"abstract":"Keystroke dynamics, which distinguishes individual by its typing rhythm, is the most prevalent behavior biometrie authentication system. Neural Network is the active research area where different area has been presented. This paper present a keystroke dynamics Biometric system using chaotic neural network as the dimensional reduction and pattern recognition of the individual. Biometric scheme are being extensively used as their security qualities over the prior authentication system based on their history, that is the records were easily lost, guessed or forget. Biometric is more complex than password and is unique for each individual. In this work, the focus is made on the dwell time and flight time of the users' typing to recognize or reject an imposter. For this paper, the recognition rate obtained for the application of chaotic neural network was 99.1%.","PeriodicalId":380266,"journal":{"name":"2017 3rd Iranian Conference on Intelligent Systems and Signal Processing (ICSPIS)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124884605","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}
{"title":"Frame-based face emotion recognition using linear discriminant analysis","authors":"Hatef Otroshi-Shahreza","doi":"10.1109/ICSPIS.2017.8311605","DOIUrl":"https://doi.org/10.1109/ICSPIS.2017.8311605","url":null,"abstract":"In this paper, a frame-based method with reference frame was proposed to recognize six basic facial emotions (anger, disgust, fear, happy, sadness and surprise) and also neutral face. By using face landmarks, a fast algorithm was used to calculate an appropriate descriptor for each frame. Furthermore, Linear Discriminant Analysis (LDA) was used to reduce the dimension of defined descriptors and to classify them. The LDA problem was solved using the least squares solution and Ledoit-Wolf lemma. The proposed method was also compared with some studies on CK+ dataset which has the best accuracy among them. To generalize the proposed method over CK+ dataset, a landmark detector was needed. Therefore, dlib library was used for this purpose. Note that all the codes are available online at: http://ee.sharif.edu/∼hatef.otroshi/Emotion_ Recognition_LDA_2017.html.","PeriodicalId":380266,"journal":{"name":"2017 3rd Iranian Conference on Intelligent Systems and Signal Processing (ICSPIS)","volume":"79 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124088590","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}
{"title":"Classification of EEG-based attention for brain computer interface","authors":"Mostafa Mohammadpour, S. Mozaffari","doi":"10.1109/ICSPIS.2017.8311585","DOIUrl":"https://doi.org/10.1109/ICSPIS.2017.8311585","url":null,"abstract":"This paper reports on an EEG-based brain computer interface (BCI) development, which recognizes four levels of attention. In order to measure the levels of subject's attention, many types of biological signals can be recorded such as electroencephalogram (EEG), electrocardiogram(ECG), electrooculo-gram(EOG), and electromyogram (EMG). Among these methods EEG generally is used as the most effective one for assessing subject's cognitive functions. Recognizing attention levels can be used in a wide variety of applications such as students' attention level, clinical application in detecting Attention Deficit Hyperactivity Disorder (ADHD), and driver fatigue detecting system. Highlighting the four levels of attention is proposed here, in which the acquired signals from subjects are modeled in a designed task so that attention levels vary from non-attention conditions (closed eyes and reading task) to full attention conditions (mathematics task and vigilance). While the previous studies only worked on two levels of attention (low and high levels), the novelty of proposed method is in using four levels of attention. After proving the effectiveness of proposed system, the results reveal appropriate signal processing and classification methods for discriminating the levels of attention which can be used for boosting the BCI performance.","PeriodicalId":380266,"journal":{"name":"2017 3rd Iranian Conference on Intelligent Systems and Signal Processing (ICSPIS)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134198359","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}
{"title":"Text coherence new method using word2vec sentence vectors and most likely n-grams","authors":"Mohamad Abdolahi Kharazmi, M. Kharazmi","doi":"10.1109/ICSPIS.2017.8311598","DOIUrl":"https://doi.org/10.1109/ICSPIS.2017.8311598","url":null,"abstract":"Discourse coherence modeling evaluation remains a challenge task in all Natural Language Processing subfields. Most proposed approaches focus on feature engineering, which accepts the sophisticated features to capture the logic, syntactic or semantic relationships between all sentences within a text. This paper investigates the automatic evaluation of text coherence. We introduce a fully-automatic rich statistical model of local and global coherence that uses word2vec approach to assess the coherence a document. Our modeling approach relies on numerical vectors derived from word2vec algorithm applied on a very large collection of texts. We successfully combined the word2vec vectors and most likely n-grams with cohesive LD-n-grams perplexity to assess the coherence and topic integrity of document. We present experimental results that assess the predictive power that it does not depend on the language and its semantic concepts. So it has the ability to apply on any language. Our model achieves state-of-the-art performance in coherence evaluation and order discrimination task on two datasets widely used in the previous methods.","PeriodicalId":380266,"journal":{"name":"2017 3rd Iranian Conference on Intelligent Systems and Signal Processing (ICSPIS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131297451","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}
{"title":"Optimal MFCC features extraction by differential evolution algorithm for speaker recognition","authors":"Mohsen Sadeghi, H. Marvi","doi":"10.1109/ICSPIS.2017.8311610","DOIUrl":"https://doi.org/10.1109/ICSPIS.2017.8311610","url":null,"abstract":"Speech is the most commonly and widely used form of communication and interaction between humans. The interfacing system, which is an automatic speaker recognition system, requires modeling to receive input data in the form of a feature with a minimum number and learn through this data. The purpose of this paper is to extract the optimal number of Mel-Frequency Cepstral Coefficients (MFCC) features without reducing the recognition accuracy for speaker recognition application. For this purpose, an algorithm has been proposed in which the Differential Evolution (EA) optimizer and also the probabilistic neural network (PNN) classifier are used to achieve this goal. After implementing this algorithm in MATLAB software, it was observed that the number of MFCC features, which so far had at least 13 for each frame, was reduced to 5 per frame, without any recognition accuracy being reduced.","PeriodicalId":380266,"journal":{"name":"2017 3rd Iranian Conference on Intelligent Systems and Signal Processing (ICSPIS)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115501814","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}
{"title":"RLOSD: Representation learning based opinion spam detection","authors":"Z. Sedighi, H. Ebrahimpour-Komleh, A. Bagheri","doi":"10.1109/ICSPIS.2017.8311593","DOIUrl":"https://doi.org/10.1109/ICSPIS.2017.8311593","url":null,"abstract":"Nowadays, by vastly increasing in online reviews, harmful influence of spam reviews on decision making causes irrecoverable outcomes for both customers and organizations. Existing methods investigate for a way to contradistinction between spam and non-spam reviews. Most algorithms focus on feature engineering approaches to expose an accommodation of data representation. In this paper we propose a decision tree-based method to reveal deceptive reviews from trustworthy ones. We use unsupervised representation learning along with traditional feature selection methods to extract appropriate features and evaluate them with a decision tree. Our model takes data correlation into consideration to opt suitable features. The result shows the better performance in detecting opinion spam, comparing most common methods in this area.","PeriodicalId":380266,"journal":{"name":"2017 3rd Iranian Conference on Intelligent Systems and Signal Processing (ICSPIS)","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116941361","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}
{"title":"Feature reduction in spectral unmixing using neural networks","authors":"Farshid Khajeh Rayeni, H. Ghassemian","doi":"10.1109/ICSPIS.2017.8311612","DOIUrl":"https://doi.org/10.1109/ICSPIS.2017.8311612","url":null,"abstract":"Spectral unmixing (SU) is a standard approach to solve the mixed pixel problem in hyperspectral (HS) images. In this study, the application of feature reduction in SU using multi-layer perceptron (MLP) with some data-independent approaches is investigated. MLP is a popular artificial neural network that can learn complex nonlinear relationships between the endmembers and the abundance fractions in HS images if it is properly trained. So far, various approaches have been introduced to extract training samples from the data itself. Since it is not possible to access the actual abundance fractions of materials in real HS images, MLP training becomes complicated. Due to a large number of bands in HS images, complexity and large training time are some of the remaining problems that would be investigated in this study. In order to overcome the problem of unavailability of the actual abundance fractions, a synthetic library is generated based on scene mixture models. And some data-independent approaches, such as discrete cosine transform and discrete wavelet transform are utilized to reduce the complexity and the training time of the MLP. The experimental results are provided using both synthetic and real datasets with different mixture models. The results show the acceptable estimated abundance fractions with root mean square error, up to 0.0008 in the linear dataset and 0.0062 in the nonlinear dataset.","PeriodicalId":380266,"journal":{"name":"2017 3rd Iranian Conference on Intelligent Systems and Signal Processing (ICSPIS)","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127267643","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}
{"title":"Dependency evaluation of financial market returns for classifying and grouping stocks","authors":"Sasan Barak","doi":"10.1109/ICSPIS.2017.8311615","DOIUrl":"https://doi.org/10.1109/ICSPIS.2017.8311615","url":null,"abstract":"Following the globalization of the economy and the increasing significance of international trade investments, linkages among economic variables of different countries are becoming strikingly evident. There is a strong interest among researchers to capture presence and extent of such negative or positive correlations. In this paper, we embark a novel methodology to identify the correlated market by a modified clustering procedure and finding the optimal number of countries within the clusters. The proposed methodology mainly works with the k-means clustering method in which its performance is improved by particle swarm optimization algorithm (PSO). The integration of these methods aims at finding the best number of clusters (k) within the dataset with a distance-based index in order to achieve the most appropriate stock market assigned to each cluster. As a case study, an experiment on daily and monthly stock market returns of 50 counties has been evaluated.","PeriodicalId":380266,"journal":{"name":"2017 3rd Iranian Conference on Intelligent Systems and Signal Processing (ICSPIS)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116136658","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}
{"title":"A short-term learning framework based on relevance feedback for content-based image retrieval","authors":"Hamed Qazanfari, H. Hassanpour, Kazem Qazanfari","doi":"10.1109/ICSPIS.2017.8311604","DOIUrl":"https://doi.org/10.1109/ICSPIS.2017.8311604","url":null,"abstract":"In this paper a short-term learning method based on relevance feedback for content-based image retrieval is proposed. In content based image retrieval systems, a set of low level features is used to find similar images to the query image. However, the extracted features are not able to represent the content of the images precisely. To resolve this issue, a learning method based on relevance feedback is proposed. The proposed method is built on a short-term learning method which is based on near strangers or distant relatives model. Based on this model, if two individuals are relatives, it is more likely that they have the same characteristics. In our proposed method, after the first iteration of retrieval, in each step of the proposed relevance feedback method, some retrieved images are labeled manually to be related to the query image. Then, new similar images are retrieved based on the labeled images. In the next step, based on the distance of these similar images from the query image, the more similar images to the query image are considered to be the retrieved images for the next iteration. Finally, over iterations, the more similar images to the query are retrieved. The proposed method has been evaluated on Corel-10k dataset which has 10,000 images in 100 different classes. Experimental results show that the precision of the proposed method is significantly higher than the precision of some recently developed methods.","PeriodicalId":380266,"journal":{"name":"2017 3rd Iranian Conference on Intelligent Systems and Signal Processing (ICSPIS)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131209053","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}
{"title":"Singer's voice elimination from stereophonic pop music using ICA","authors":"Danial Katoozian, F. Faradji","doi":"10.1109/ICSPIS.2017.8311611","DOIUrl":"https://doi.org/10.1109/ICSPIS.2017.8311611","url":null,"abstract":"Separation of vocal elements from background music is a popular application in music information retrieval. Additionally, it is known that if two independent and non-Gaussian signals are mixed together, independent component analysis can be employed to separate the two sources from their mixtures. For this reason, in this paper, a fast and simple approach based on independent component analysis has been proposed to separate the singer's voice from the stereophonic recorded music. Finally, the proposed algorithm has been evaluated using different pieces of pop music.","PeriodicalId":380266,"journal":{"name":"2017 3rd Iranian Conference on Intelligent Systems and Signal Processing (ICSPIS)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133612033","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}