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1 to 10 of 185 Results
Learning Search Control Knowledge for Deep Space Network Scheduling
Jun 27, 1993
Gratch, Jonathan; Chien, Steve; DeJong, Gerald, 1993, "Learning Search Control Knowledge for Deep Space Network Scheduling", https://hdl.handle.net/2014/35258, Amherst, MA, USA, JPL Open Repository
While the general class of most scheduling problems is NP-hard in worst-case complexity, in practice, for specific distributions of problems and constraints, domain-specific solutions have been shown to perform in much better than exponential time.
The Multimission VICAR Planner: A Fielded Planning System for Scientific Data Analysis
Oct 1, 1995
Chien, Steve, 1995, "The Multimission VICAR Planner: A Fielded Planning System for Scientific Data Analysis", https://hdl.handle.net/2014/32044, Assisi, Italy, JPL Open Repository
The Multimission VICAR Planner (MVP) system is an AI planning system which constructs
Automating the Process of Optimization in Spacecraft Design
Feb 1, 1997
Fukunaga, Alex; Chien, Steve; Mutz, Darren; Sherwood, Robert L.; Stechert, Andre D., 1997, "Automating the Process of Optimization in Spacecraft Design", https://hdl.handle.net/2014/27636, Aspen, CO, JPL Open Repository
Spacecraft design optimization is a difficult problem, due to the complexity of optimization cost surfaces, and human expertise in optimization that is necessary in order to achieve good results. In this paper, we propose the use of a set of generic, metaheuristic optimization al...
Towards an Application Framework for Automated Planning and Scheduling
Feb 2, 1997
Fukunaga, Alex; Rabideau, Greg; Chien, Steve; Yan, David, 1997, "Towards an Application Framework for Automated Planning and Scheduling", https://hdl.handle.net/2014/27637, Snowmass, CO, JPL Open Repository
A number of successful applications of automated planning and scheduling applications to spacecraft operations have recently been reported in the literature. However, these applications have been one-of-a-kind applications that required a substantial amount of development effort....
Towards a Self-Configuring Optimization System for Spacecraft Design
Jul 14, 1997
Chien, Steve, 1997, "Towards a Self-Configuring Optimization System for Spacecraft Design", https://hdl.handle.net/2014/22282, Tokyo, JPL Open Repository
In this paper, we propose the use of a set of generic, metaheuristic optimization algorithms, which is configured for a particular optimization problem by an adaptive problem solver based on artificial intelligence and machine learning techniques. We describe work in progress on...
ASPEN: A Framework for Automated Planning and Scheduling of Spacecraft Control and Operations
Jul 14, 1997
Yan, David; Fukunaga, Alex S.; Rabideau, Gregg; Chien, Steve, 1997, "ASPEN: A Framework for Automated Planning and Scheduling of Spacecraft Control and Operations", https://hdl.handle.net/2014/22263, Tokyo, JPL Open Repository
In this paper, we describe ASPEN (Automated Planning/Scheduling Environment), a modular, reconfigurable application framework which is capable of supporting a wide variety of planning and scheduling applications.
Efficiently Ranking Hyphotheses in Machine Learning
Aug 23, 1997
Chien, Steve, 1997, "Efficiently Ranking Hyphotheses in Machine Learning", https://hdl.handle.net/2014/22283, Nagoya, Japan, JPL Open Repository
This paper considers the problem of learning the ranking of a set of alternatives based upon incomplete information (e.g. a limited number of observations). At each decision cycle, the system can output a complete ordering on the hypotheses or decide to gather additional informat...
ASPEN: EO-1 Mission Activity Planning Made Easy
Aug 26, 1997
Sherwood, Rob; Govindjee, Anita; Yan, David; Rabideau, Gregg; Chien, Steve; Fukunaga, Alex, 1997, "ASPEN: EO-1 Mission Activity Planning Made Easy", https://hdl.handle.net/2014/22526, Oxnard, California, USA, JPL Open Repository
This paper describes the application of an automated planning and scheduling system to the NASA Earth Orbitin 1 (EO-1) missions. The planning system, ASPEN, is used to autonomously schedule the daily activites of the satellite.
Using ASPEN to Automate EO-1 Activity Planning
Mar 21, 1998
Sherwood, Rob; Govindjee, Anita; Yan, David; Rabideau, Gregg; Chien, Steve; Fukunaga, Alex, 1998, "Using ASPEN to Automate EO-1 Activity Planning", https://hdl.handle.net/2014/23002, USA, JPL Open Repository
This paper describes the application of an automated planning and scheduling system to the NASA Earth Orbiting 1 (EO-1) mission. The planning system, ASPEN, is used to autonomously schedule the daily activites of the satellite. The satellite and operations constraints are encoded...
Using multiple space assests with In-situ measurements to track flooding in Thailand.
Apr 10, 2001
Chien, Steve; Doubleday, Joshua; Mclaren, David; Tran, Daniel; Khunboa, Chatchai; Leelapatra, Watis; Pergamon, Vichain; Tanpipat, Veerachai; Chitradon, Royal; Boonya-aroonnet, Surajate; Thanapakpawin, Porranee; Meethome, Amara; Raghavendra, Cauligi (Raghu); Mandl, Daniel, 2001, "Using multiple space assests with In-situ measurements to track flooding in Thailand.", https://hdl.handle.net/2014/41861, International Sysmposium on the Remote Sensing of the Environment, Sydney, Australia, April 10, 2011., JPL Open Repository
Increasing numbers of space assets can enable coordinated measurements of flooding phenomena to enhance tracking of extreme events. We describe the use of space and ground measurements to target further measurements as part of a flood monitoring system in Thailand. We utilize rap...
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