Copyright Notice


The reports contained in this Web site are included by the contributing authors as a mechanism to ensure timely dissemination of scholarly/technical information on a non-commercial basis. Copyright and all rights therein are maintained by the authors, despite the fact they have offered this information electronically. It is understood that all individuals copying this information will adhere to the terms and constraints invoked by each author's copyright. Reports may not be copied for commercial redistribution, republication, or dissemination without the explicit permission of both the authors and the University of Pennsylvania Department of Computer & Information Science. Please contact tech-reports@central.cis.upenn.edu if you have any questions regarding these publications.