Austin, Jim
An Evaluation of Classification and Outlier Detection Algorithms
Hodge, Victoria J., Austin, Jim
This paper evaluates algorithms for classification and outlier detection accuracies in temporal data. We focus on algorithms that train and classify rapidly and can be used for systems that need to incorporate new data regularly. Hence, we compare the accuracy of six fast algorithms using a range of well-known time-series datasets. The analyses demonstrate that the choice of algorithm is task and data specific but that we can derive heuristics for choosing. Gradient Boosting Machines are generally best for classification but there is no single winner for outlier detection though Gradient Boosting Machines (again) and Random Forest are better. Hence, we recommend running evaluations of a number of algorithms using our heuristics.
Reports on the AAAI 1999 Workshop Program
Drabble, Brian, Chaudron, Laurent, Tessier, Catherine, Abu-Hakima, Sue, Willmott, Steven, Austin, Jim, Faltings, Boi, Freuder, Eugene C., Friedrich, Gerhard, Freitas, Alex A., Cortes, U., Sanchez-Marre, M., Aha, David W., Becerra-Fernandez, Irma, Munoz-Avila, Hector, Ghose, Aditya, Menzies, Tim, Satoh, Ken, Califf, Mary Elaine, Cox, Michael, Sen, Sandip, Brezillon, Patrick, Pomerol, Jean-Charles, Turner, Roy, Turner, Elise
The AAAI-99 Workshop Program (a part of the sixteenth national conference on artificial intelligence) was held in Orlando, Florida. Each workshop was limited to approximately 25 to 50 participants. Participation was by invitation from the workshop organizers. The workshops were Agent-Based Systems in the Business Context, Agents' Conflicts, Artificial Intelligence for Distributed Information Networking, Artificial Intelligence for Electronic Commerce, Computation with Neural Systems Workshop, Configuration, Data Mining with Evolutionary Algorithms: Research Directions (Jointly sponsored by GECCO-99), Environmental Decision Support Systems and Artificial Intelligence, Exploring Synergies of Knowledge Management and Case-Based Reasoning, Intelligent Information Systems, Intelligent Software Engineering, Machine Learning for Information Extraction, Mixed-Initiative Intelligence, Negotiation: Settling Conflicts and Identifying Opportunities, Ontology Management, and Reasoning in Context for AI Applications.
Reports on the AAAI 1999 Workshop Program
Drabble, Brian, Chaudron, Laurent, Tessier, Catherine, Abu-Hakima, Sue, Willmott, Steven, Austin, Jim, Faltings, Boi, Freuder, Eugene C., Friedrich, Gerhard, Freitas, Alex A., Cortes, U., Sanchez-Marre, M., Aha, David W., Becerra-Fernandez, Irma, Munoz-Avila, Hector, Ghose, Aditya, Menzies, Tim, Satoh, Ken, Califf, Mary Elaine, Cox, Michael, Sen, Sandip, Brezillon, Patrick, Pomerol, Jean-Charles, Turner, Roy, Turner, Elise
The AAAI-99 Workshop Program (a part of the sixteenth national conference on artificial intelligence) was held in Orlando, Florida. The program included 16 workshops covering a wide range of topics in AI. Each workshop was limited to approximately 25 to 50 participants. Participation was by invitation from the workshop organizers. The workshops were Agent-Based Systems in the Business Context, Agents' Conflicts, Artificial Intelligence for Distributed Information Networking, Artificial Intelligence for Electronic Commerce, Computation with Neural Systems Workshop, Configuration, Data Mining with Evolutionary Algorithms: Research Directions (Jointly sponsored by GECCO-99), Environmental Decision Support Systems and Artificial Intelligence, Exploring Synergies of Knowledge Management and Case-Based Reasoning, Intelligent Information Systems, Intelligent Software Engineering, Machine Learning for Information Extraction, Mixed-Initiative Intelligence, Negotiation: Settling Conflicts and Identifying Opportunities, Ontology Management, and Reasoning in Context for AI Applications.
A High Performance k-NN Classifier Using a Binary Correlation Matrix Memory
Zhou, Ping, Austin, Jim, Kennedy, John
This paper presents a novel and fast k-NN classifier that is based on a binary CMM (Correlation Matrix Memory) neural network. A robust encoding method is developed to meet CMM input requirements. A hardware implementation of the CMM is described, which gives over 200 times the speed of a current mid-range workstation, and is scaleable to very large problems. When tested on several benchmarks and compared with a simple k-NN method, the CMM classifier gave less than I % lower accuracy and over 4 and 12 times speedup in software and hardware respectively.
A High Performance k-NN Classifier Using a Binary Correlation Matrix Memory
Zhou, Ping, Austin, Jim, Kennedy, John
This paper presents a novel and fast k-NN classifier that is based on a binary CMM (Correlation Matrix Memory) neural network. A robust encoding method is developed to meet CMM input requirements. A hardware implementation of the CMM is described, which gives over 200 times the speed of a current mid-range workstation, and is scaleable to very large problems. When tested on several benchmarks and compared with a simple k-NN method, the CMM classifier gave less than I% lower accuracy and over 4 and 12 times speedup in software and hardware respectively.