Fabio Previtali, Alejandro Bordallo, L. Iocchi, S. Ramamoorthy
{"title":"Predicting Future Agent Motions for Dynamic Environments","authors":"Fabio Previtali, Alejandro Bordallo, L. Iocchi, S. Ramamoorthy","doi":"10.1109/ICMLA.2016.0024","DOIUrl":"https://doi.org/10.1109/ICMLA.2016.0024","url":null,"abstract":"Understanding activities of people in a monitored environment is a topic of active research, motivated by applications requiring context-awareness. Inferring future agent motion is useful not only for improving tracking accuracy, but also for planning in an interactive motion task. Despite rapid advances in the area of activity forecasting, many state-of-the-art methods are still cumbersome for use in realistic robots. This is due to the requirement of having good semantic scene and map labelling, as well as assumptions made regarding possible goals and types of motion. Many emerging applications require robots with modest sensory and computational ability to robustly perform such activity forecasting in high density and dynamic environments. We address this by combining a novel multi-camera tracking method, efficient multi-resolution representations of state and a standard Inverse Reinforcement Learning (IRL) technique, to demonstrate performance that is better than the state-of-the-art in the literature. In this framework, the IRL method uses agent trajectories from a distributed tracker and estimates a reward function within a Markov Decision Process (MDP) model. This reward function can then be used to estimate the agent's motion in future novel task instances. We present empirical experiments using data gathered in our own lab and external corpora (VIRAT), based on which we find that our algorithm is not only efficiently implementable on a resource constrained platform but is also competitive in terms of accuracy with state-of-the-art alternatives (e.g., up to 20% better than the results reported in [1]).","PeriodicalId":356182,"journal":{"name":"2016 15th IEEE International Conference on Machine Learning and Applications (ICMLA)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122214707","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":"Learning the Domain of Sparse Matrices","authors":"Suleyman Salin, M. Manguoglu, H. Aktulga","doi":"10.1109/ICMLA.2016.0143","DOIUrl":"https://doi.org/10.1109/ICMLA.2016.0143","url":null,"abstract":"Large sparse linear system of equations arise in many areas of science and engineering. Although, there are several black-box general sparse solvers, usually they are not as effective as domain specific solvers. In addition, most solvers contain multiple choices during the solution process which can be tailored to a specific domain. A natural first step towards a black-box solver that is as effective as domain specific solvers is to come up with a technique to identify the application domain of the problem. In this work, we propose to use some computationally inexpensive matrix properties for the classification task, and apply several classifiers to identify the application domain. Experiments on a large set of sparse matrices show that the domain information is predicted with 75.9% overall accuracy, and matrices in a specific domain can be predicted with 99% accuracy.","PeriodicalId":356182,"journal":{"name":"2016 15th IEEE International Conference on Machine Learning and Applications (ICMLA)","volume":"158 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123132302","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":"Fast Nearest Neighbor Search with Transformed Residual Quantization","authors":"Jiangbo Yuan, Xiuwen Liu","doi":"10.1109/ICMLA.2016.0175","DOIUrl":"https://doi.org/10.1109/ICMLA.2016.0175","url":null,"abstract":"Product quantization (PQ) and residual quantization (RQ) have been successfully used to solve fast nearest neighbor search problems thanks to their exponentially reduced complexities of both storage and computation with respect to the codebook size, Recent efforts have been focused on employing optimization strategies and seeking more effective models. Based on the observation that randomness typically increases in subsequent residual spaces, we propose a new strategy, called, transformed RQ (TRQ), that jointly learns a local transformation per residual cluster with an ultimate goal to further reduce overall quantization errors. Additionally we propose a hybrid approximate nearest search method based on the proposed TRQ and PQ. We show that our methods achieve significantly better accuracy on nearest neighbor search than both the original and the optimized PQ on several benchmark datasets.","PeriodicalId":356182,"journal":{"name":"2016 15th IEEE International Conference on Machine Learning and Applications (ICMLA)","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114948902","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":"Sentiment Analysis of Restaurant Reviews on Yelp with Incremental Learning","authors":"Tri Doan, J. Kalita","doi":"10.1109/ICMLA.2016.0123","DOIUrl":"https://doi.org/10.1109/ICMLA.2016.0123","url":null,"abstract":"Sentiment analysis of customer reviews has a crucial impact on a business's development strategy. Despite the fact that a repository of reviews evolves over time, sentiment analysis often relies on offline solutions where training data is collected before the model is built. If we want to avoid retraining the entire model from time to time, incremental learning becomes the best alternative solution for this task. In this work, we present a variant of online random forests to perform sentiment analysis on customers' reviews. Our model is able to achieve accuracy similar to offline methods and comparable to other online models.","PeriodicalId":356182,"journal":{"name":"2016 15th IEEE International Conference on Machine Learning and Applications (ICMLA)","volume":"85 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134232432","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}
J. Sprockel, J. Diaztagle, Alberto Llanos, Cristian Castillo, Enríque González Guerrero
{"title":"Validation of a Federation of Collaborative Rational Agents for the Diagnosis of Acute Coronary Syndromes in a Population with High Probability","authors":"J. Sprockel, J. Diaztagle, Alberto Llanos, Cristian Castillo, Enríque González Guerrero","doi":"10.1109/ICMLA.2016.0125","DOIUrl":"https://doi.org/10.1109/ICMLA.2016.0125","url":null,"abstract":"Acute myocardial infarction is the main cause of death worldwide, it is part of the acute coronary syndromes (ACS) which are characterized by an acute obstruction of the blood flow in the arteries of the heart. ACS diagnosis poses a highly complex problem where the use of intelligent systems represents an opportunity for the optimization of the diagnosis. The objective of the present work is to perform a cross validation of a federation of collaborative rational agents for the diagnosis of ACS in a population with high probability exhibiting chest pain. A study of diagnostic tests was performed, the diagnostic standard criterion was the third redefinition of infarction or some strategy for coronary stratification. The index test was the result of a system based on a federation of collaborative rational agents based on the assembly of neural networks by means of a weighted voting system in accordance with positive likelihood ratios. A sample of 108 patients was calculated and a contingency table was built in order to calculate the operational characteristics. 148 patients were taken into consideration, ACS was discarded in 29,2%, 51,7 exhibited acute infarction, and 19,1% exhibited unstable angina. The federation system reached a precision of 79%, sensibility of 97,1%, specificity of 36,4%, and AUC of 0,672. It is concluded that a multi-agent system based on the assembly of neural networks attained an acceptable performance for the diagnosis of ACS in a population with high probability.","PeriodicalId":356182,"journal":{"name":"2016 15th IEEE International Conference on Machine Learning and Applications (ICMLA)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134504129","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":"Analysis for Status of the Road Accident Occurance and Determination of the Risk of Accident by Machine Learning in Istanbul","authors":"H. Bulbul, T. Kaya, Yusuf Tulgar","doi":"10.1109/ICMLA.2016.0075","DOIUrl":"https://doi.org/10.1109/ICMLA.2016.0075","url":null,"abstract":"The traffic has been transformed into the difficult structure in points of designing and managing by the reason of increasing number of vehicle. This situation has discovered road accidents problem, influenced public health and country economy and done the studies on solution of the problem. Large calibrated data agglomerations have increased by the reasons of the technological improvements and data storage with low cost. Arising the need of accession to information from this large calibrated data obtained the corner stone of the data mining. In this study, assignment of the most compatible machine learning classification techniques for road accidents estimation by data mining has been intended.","PeriodicalId":356182,"journal":{"name":"2016 15th IEEE International Conference on Machine Learning and Applications (ICMLA)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129440678","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":"Real-Time Activity Classification by Matched Filtering Using Body-Worn Accelerometers","authors":"C. Euler, C. T. Lin, Bryan Juarez, Melissa Flores","doi":"10.1109/ICMLA.2016.0192","DOIUrl":"https://doi.org/10.1109/ICMLA.2016.0192","url":null,"abstract":"Having information of a user's activity can provide great use in modern-day devices such as ones that track and monitor the user's activity and fitness. In this paper, we demon-strate activity classification performance of the matched-filtering method with data obtained from a three-axis accelerometer worn by the user. We also show the real-time processing capability of our algorithms on the MSP432P401R low-powered micro-controller. Dimensionality reduction with principal component analysis (PCA) [1] is a data compression technique we use to improve our processing throughput which, inherently, has the added benefit of making our data invariant to sensor orientation. Data decimation in time is an additional throughput enhancement that we apply early to our data. We make use of an instance-based learning algorithm to train the device to learn the individual's motion patterns and store that information as activity templates for use in our matched-filter.","PeriodicalId":356182,"journal":{"name":"2016 15th IEEE International Conference on Machine Learning and Applications (ICMLA)","volume":"225 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116492853","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":"User Movement Prediction: The Contribution of Machine Learning Techniques","authors":"Shadi Banitaan, Mohammad Azzeh, A. B. Nassif","doi":"10.1109/ICMLA.2016.0100","DOIUrl":"https://doi.org/10.1109/ICMLA.2016.0100","url":null,"abstract":"Ambient Assisted Living (AAL) aims to increase the time older people or disabled people can live in their home environment by assisting them in performing activities of daily living by the use of intelligent products. Localization and tracking of users in indoor environment are the main components of AAL. Wireless sensor networks is an effective technology to accomplish these services by using Received Signal Strength (RSS) information. This work seeks to investigate the effect of machine learning techniques on the accuracy of user movement prediction. Five base classifiers and two ensemble learning approaches are employed and the results are evaluated in terms of precision recall, and F-measure. A real-life benchmark dataset in the area of AAL is used for evaluation. The results show that J48 is the best performing model compared to the other base-level classifiers. It also shows that Bagged J48 achieves the best performance.","PeriodicalId":356182,"journal":{"name":"2016 15th IEEE International Conference on Machine Learning and Applications (ICMLA)","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114714426","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}
Mahiye Uluyagmur-Ozturk, A. Arman, Seval Sultan Yilmaz, O. P. Findik, H. A. Genç, Gresa Carkaxhiu-Bulut, M. Yazgan, Umut Teker, Z. Cataltepe
{"title":"ADHD and ASD Classification Based on Emotion Recognition Data","authors":"Mahiye Uluyagmur-Ozturk, A. Arman, Seval Sultan Yilmaz, O. P. Findik, H. A. Genç, Gresa Carkaxhiu-Bulut, M. Yazgan, Umut Teker, Z. Cataltepe","doi":"10.1109/ICMLA.2016.0145","DOIUrl":"https://doi.org/10.1109/ICMLA.2016.0145","url":null,"abstract":"In this work, we focused on classification of the participants with Attention Deficit Hyperactivity Disorder (ADHD), Autism Spectrum Disorder (ASD) and typically developing children, based on their performances during an emotion recognition experiment that we developed. We prepared an experiment environment where participants were shown images of faces of people exhibiting certain emotions up to a certain strength and then they answered the question \"What is the emotion of this person?\". The response and response latency of the participants were recorded and used for the classification process. Before the classification step, in order to select the relevant images which are used as features in this work, ReliefF feature selection algorithm was used. Machine learning feature selection and classification algorithms were used on different definitions of the classification problem where the differentiation between two classes against each other or one class against the other two classes were aimed. The selected features (images shown) and the classification performance changed based on the classification problem definition.","PeriodicalId":356182,"journal":{"name":"2016 15th IEEE International Conference on Machine Learning and Applications (ICMLA)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128546797","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":"Interpretation Method of Nonlinear Multilayer Principal Component Analysis by Using Sparsity and Hierarchical Clustering","authors":"N. Koda, Sumio Watanabe","doi":"10.1109/ICMLA.2016.0193","DOIUrl":"https://doi.org/10.1109/ICMLA.2016.0193","url":null,"abstract":"Nonlinear multilayer principal component analysis (NMPCA) is well-known as an improved version of principal component analysis (PCA) using a five layer bottleneck neural network. NMPCA enables us to extract nonlinear hidden structure from high dimensional data, however, it has been difficult for users to understand obtained results, because trained results of NMPCA have many different locally optimal parameters depending on initial parameters. There has been no method how to find a few essential structures from many differently trained networks. This paper proposes a new interpretation method of NMPCA by extracting a few essential structures from many differently trained and locally optimal parameters. In the proposed method, firstly the weight parameters are made to be sparsely represented by LASSO training and appropriately ordered using the generalized factor loadings, then classified into a few hierarchical clusters, so that users can understand the extracted results. Its effectiveness is shown by both artificial and real world problems.","PeriodicalId":356182,"journal":{"name":"2016 15th IEEE International Conference on Machine Learning and Applications (ICMLA)","volume":"226 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133366070","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}