Case-Based Reasoning
A Case-Based System to Aid Cognition and Meta-Cognition is a Design-Based Learning Environment
Bhat, Ganesh Prasad (Georgia Institute of Technology) | Kolodner, Janet L (Georgia Institute of Technology)
Design-based learning (DBL) has many affordances for promoting deep and lasting learning of both content and complex skills. However, careful orchestration and scaffolding are usually needed to achieve its full potential. In this paper, we describe our efforts at implementing a software suite to meet the cognitive and meta-cognitive needs of learners engaged in DBL. In Study 1, our software suite gave learners the opportunity to design in simulation, to run experiments to learn the effects of variables, and it scaffolded science explanation construction. Through our analysis of study 1 we identified both cognitive and metacognitive needs that the software did not provide for. To meet these additional requirements, we added an interactive science resource and a case library to the software to provide multi-representational content material, to facilitate exploration, and to invite metacognitive reflection needed to do well at learning through design. Learners recognized what they did not understand, took initiative to explore those science concepts, and applied them in novel ways. We present here our analysis of the kinds of metacognitive help learners need to productively learn from design activities and some ways of providing that help. Our conclusion is that cognitive aid without related metacognitive aid is insufficient in a DBL environment.
Converging on the Divergent: The History (and Future) of the International Joint Workshops in Computational Creativity
Cardoso, Amรญlcar (University of Coimbra) | Veale, Tony (School of Computer Science and Informatics, University College Dublin) | Wiggins, Geraint A. (Centre for Cognition, Computation and Culture, Goldsmiths, University of London)
The difference between comedians and their audience is a matter not of kind, but of degree, a difference that is reflected in the vocational emphasis they place on humor. Researchers in the field of computational creativity find themselves in a similar situation. As a subdiscipline of artificial intelligence, computational creativity explores theories and practices that give rise to a phenomenon, creativity, that all intelligent systems, human or machine, can legitimately lay claim to. Who is to say that a given AI system is not creative, insofar as it solves nontrivial problems or generates useful outputs that are not hard wired into its programming? As with comedians' being funny, the difference between studying computational creativity and studying artificial intelligence is one of emphasis rather than one of kind: the field of computational creativity, as typified by a long-running series of workshops at AIrelated conferences, places a vocational emphasis on creativity and attempts to draw together the commonalities of what
An Ensemble Learning and Problem Solving Architecture for Airspace Management
Zhang, Xiaoqin (Shelly) (University of Massachusetts) | Yoon, Sungwook (Arizona State University) | DiBona, Phillip (Lockheed Martin ย Advanced Technology Laboratories) | Appling, Darren (Georgia Institute of Technology) | Ding, Li (Rensselaer Polytechnic Institute) | Doppa, Janardhan (Oregon State University) | Green, Derek (University of Wyoming) | Guo, Jinhong (Lockheed Martin Advanced Technology Laboratories) | Kuter, Ugur (University of Maryland) | Levine, Geoff (University of Illinois at Urbana) | MacTavish, Reid (Georgia Institute of Technology) | McFarlane, Daniel (Lockheed Martin Advanced Technology Laboratories) | Michaelis, James (Rensselaer Polytechnic Institute) | Mostafa, Hala (University of Massachusetts) | Ontanon, Santiago (Georgia Institute of Technology) | Parker, Charles (Georgia Institute of Technology) | Radhakrishnan, Jainarayan (University of Wyoming) | Rebguns, Anton (University of Massachusetts) | Shrestha, Bhavesh (Fujitsu Laboratories of America) | Song, Zhexuan (Georgia Institute of Technology) | Trewhitt, Ethan (University of Massachusetts) | Zafar, Huzaifa (University of Massachusetts) | Zhang, Chongjie (University of Massachusetts) | Corkill, Daniel (University of Illinois at Urbana-Champaign) | DeJong, Gerald (Oregon State University) | Dietterich, Thomas (Arizona State University) | Kambhampati, Subbarao (University of Massachusetts) | Lesser, Victor (Rensselaer Polytechnic Institute) | McGuinness, Deborah L. (Georgia Institute of Technology) | Ram, Ashwin (University of Wyoming) | Spears, Diana (Oregon State University) | Tadepalli, Prasad (Georgia Institute of Technology) | Whitaker, Elizabeth (Oregon State University) | Wong, Weng-Keen (Rensselaer Polytechnic Institute) | Hendler, James (Lockheed Martin Advanced Technology Laboratories) | Hofmann, Martin (Lockheed Martin Advanced Technology Laboratories) | Whitebread, Kenneth
In this paper we describe the application of a novel learning and problem solving architecture to the domain of airspace management, where multiple requests for the use of airspace need to be reconciled and managed automatically. The key feature of our "Generalized Integrated Learning Architecture" (GILA) is a set of integrated learning and reasoning (ILR) systems coordinated by a central meta-reasoning executive (MRE). Each ILR learns independently from the same training example and contributes to problem-solving in concert with other ILRs as directed by the MRE. Formal evaluations show that our system performs as well as or better than humans after learning from the same training data. Further, GILA outperforms any individual ILR run in isolation, thus demonstrating the power of the ensemble architecture for learning and problem solving.
Reports of the AAAI 2008 Fall Symposia
Beal, Jacob (BBN Technologies) | Bello, Paul A. (Office of Naval Research) | Cassimatis, Nicholas (University of Wisconsin-Madison) | Coen, Michael H. (University of Arizona) | Cohen, Paul R. (Stottler Henke) | Davis, Alex (The MITRE Corporation) | Maybury, Mark T. (George Mason University) | Samsonovich, Alexei (Rensselaer Polytechnic Institute) | Shilliday, Andrew (University of Missouri-Columbia) | Skubic, Marjorie (Rensselaer Polytechnic Institute) | Taylor, Joshua (AFRL) | Walter, Sharon (Massachusetts Institute of Technology) | Winston, Patrick (University of Massachusetts) | Woolf, Beverly Park
These underpinnings in genetics and fields are vast, variegated, informed by memetics, studying phenomena such disparate theoretical and technical disciplines, as coalition formation in an artificial and interrelated. Other applications provided an updated perspective ethical concerns related to the use of included case-based retrieval of to a previous symposium held in fall eldercare technology to ensure that narratives culturally relevant to a 2005 on the same topic. Some models focused One major theme of the symposium The symposium ended with a more directly on adaptation, from machine-learning was to investigate the use of sensor brainstorming session on possible solutions and game-theoretic networks in the home environment to for two real-life scenarios for perspectives, but discussions suggested provide safety, to monitor activities of ailing elders and their caregivers. The ways in which those adaptations daily living, to assess physical and cognitive exercise was helpful in grounding the might vary from one cultural context function, and to identify participants in the lives of older adults to another. Work was also should address real needs.
Plausible Repairs for Inconsistent Requirements
Felfernig, Alexander (Graz University of Technology) | Friedrich, Gerhard (University of Klagenfurt) | Schubert, Monika (Graz University of Technology) | Mandl, Monika (Graz University of Technology) | Mairitsch, Markus (University of Klagenfurt) | Teppan, Erich (University of Klagenfurt)
Knowledge-based recommenders support users in the identification of interesting items from large and potentially complex assortments. In cases where no recommendation could be found for a given set of requirements, such systems propose explanations that indicate minimal sets of faulty requirements. Unfortunately, such explanations are not personalized and do not include repair proposals which triggers a low degree of satisfaction and frequent cancellations of recommendation sessions. In this paper we present a personalized repair approach that integrates the calculation of explanations with collaborative problem solving techniques. In order to demonstrate the applicability of our approach, we present the results of an empirical study that show significant improvements in the accuracy of predictions for interesting repairs.
Early Prediction on Time Series: A Nearest Neighbor Approach
Xing, Zhengzheng (Simon Fraser Univeristy) | Pei, Jian (Simon Fraser University) | Yu, Philip S. (University of Illinois at Chicago)
In this paper, we formulate the problem of early classification of time series data, which is important in some time-sensitive applications such as health-informatics. We introduce a novel concept of MPL (Minimum Prediction Length) and develop ECTS (Early Classification on Time Series), an effective 1-nearest neighbor classification method. ECTS makes early predictions and at the same time retains the accuracy comparable to that of a 1NN classifier using the full-length time series. Our empirical study using benchmark time series data sets shows that ECTS works well on the real data sets where 1NN classification is effective.
Knowledge Management in Economic Intelligence with Reasoning on Temporal Attributes
Oladejo, Bolanle, Osofisan, Adenike, Odumuyiwa, Victor
People have to make important decisions within a time frame. Hence, it is imperative to employ means or strategy to aid effective decision making. Consequently, Economic Intelligence (EI) has emerged as a field to aid strategic and timely decision making in an organization. In the course of attaining this goal: it is indispensable to be more optimistic towards provision for conservation of intellectual resource invested into the process of decision making. This intellectual resource is nothing else but the knowledge of the actors as well as that of the various processes for effecting decision making. Knowledge has been recognized as a strategic economic resource for enhancing productivity and a key for innovation in any organization or community. Thus, its adequate management with cognizance of its temporal properties is highly indispensable. Temporal properties of knowledge refer to the date and time (known as timestamp) such knowledge is created as well as the duration or interval between related knowledge. This paper focuses on the needs for a user-centered knowledge management approach as well as exploitation of associated temporal properties. Our perspective of knowledge is with respect to decision-problems projects in EI. Our hypothesis is that the possibility of reasoning about temporal properties in exploitation of knowledge in EI projects should foster timely decision making through generation of useful inferences from available and reusable knowledge for a new project.
Methodology for Classifying and Indexing Case-Based Reasoning Systems in the Health Sciences
Bichindaritz, Isabelle (University of Washington Tacoma) | John C. Reed, Jr. (University of Washington Tacoma)
As the amount of information available to researchers grows at an increasing rate, it becomes much more difficult to find relevant resources. An approach taken by several authoritative bodies, such as the Association for Computing Machinery and the U.S. National Library of Medicine, is the introduction of a classification scheme. However, even the most modern schemes are not capable of adequately distinguishing one research paper from another, due mainly to their broad generality. This paper describes a methodology for building a much narrower, specialized classification scheme focused on the area of Cased-Based Reasoning in the Health Sciences. It is derived from thorough analysis of the field, but with a framework that can be adapted to other areas. Using a tiered approach to further subdivide systems into more specific classes according to criteria specific to this particular field, this classification scheme affords interdisciplinary search, which is generally left out of generic indexing systems. This paper presents the resulting classification scheme and showcases its usefulness for classifying and tracking the evolution of research.
Discovering Patterns of Collaboration for Recommendation
Gunawardena, Sidath (Drexel University) | Weber, Rosina (Drexel University)
Collaboration between research scientists, particularly those with diverse backgrounds, is a driver of scientific innovation. However, finding the right collaborator is often an unscientific process that is subject to chance. This paper explores recommending collaborators based on repeating patterns of previous successful collaboration experiences, what we term prototypical collaborations. We investigate a method for discovering such prototypes to use them as a basis to guide the recommendation of new collaborations. To this end, we also examine two methods for matching collaboration seekers to these prototypical collaborations. Our initial studies reveal that though promising, improving collaborations through recommendation is a complex goal.
Improving KD-Tree Based Retrieval for Attribute Dependent Generalized Cases
Bergmann, Ralph (University of Trier) | Tartakovski, Alexander (Piterion GmbH)
Generalized cases are cases that cover a subspace rather than a point in the problem-solution space. Attribute dependent generalized cases are a subclass of generalized cases, which cause a high computational complexity during similarity assessment. We present a new approach for an efficient index-based retrieval of such generalized cases by an improved kd-tree approach. The experimental evaluation demonstrates a significant improvement in retrieval efficiency compared to previous methods.