Henri Jacques Suermondt

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PWS is a physician's workstation research prototype developed to explore the use of information management tools by physicians in the context of patient care. The original prototype was implemented in a client/server architecture using a broadcast message server. As we expanded the scope of the prototyping activities, we identified the limitations of the(More)
The method of conditioning permits probabilistic inference in multiply connected belief networks using an algorithm by Pearl. This method uses a select set of nodes, the loop cutset, to render the multiply connected network singly connected. We discuss the function of the nodes of the loop cutset and a condition that must be met by the nodes of the loop(More)
Suermondt, H. The method of conditioning allows us to use Pearl's probabilistic-inference algorithm in multiply connected belief networks by instantiating a subset of the nodes in the network, the loop cutset. To use the method of conditioning, we must calculate the joint prior probabilities of the nodes of the loop cutset. We present a method that lets us(More)
Cutset conditioning and clique-tree propagation are two popular methods for performing exact probabilistic inference in Bayesian belief networks. Cutset conditioning is based on decomposition of a subset of network nodes, whereas clique-tree propagation depends on aggregation of nodes. We describe a means to combine cutset conditioning and clique- tree(More)
Cutset conditioning and clique-tree propagation are two popular methods for exact probabilistic inference in Bayesian belief networks. Cutset conditioning is based on decomposition of a subset of network nodes, whereas clique-tree propagation depends on aggregation of nodes. We characterize network structures in which the performances of these methods(More)
Patient care is an information-intensive activity, yet physicians have few tools to effectively access and manage patient data. We studied physicians' information needs in an outpatient clinic, and developed a prototype physician's workstation (PWS) to address those needs. The PWS provides integrated access to patient information and uses embedded domain(More)
The introduction of computer-based patient records offers an opportunity to improve the ability of physicians to browse the medical record and to monitor patient events. We describe a methodology to identify relevant information in the patient record. This methodology combines a patient-specific physiological model with functions to determine relevance of(More)