Allen Ginsberg

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Research in machine learning often focuses either on inductive learning learning from experience with minimal reliance on prior theory or, more recently, on explanation-based learning deducing general descriptions from theories with minimal reliance on experience. Theory revision unites these two concerns: one must revise one’s theory in the light of(More)
A case of Turcot's syndrome (colonic polyposis plus a malignant central nervous system tumor) occurring in a kindred with autosomal dominant colonic polyposis is presented. It is proposed that Turcot's syndrome patients can be classified into Type I where only siblings are affected and Type II where two or more generations have colonic polyposis. A third(More)
This paper describes an approach to knowledge base refinement, an important aspect of knowledge acquisition. Knowledge base refinement is characterized by the addition, deletion, and alteration of rule-components in an existing knowledge base, in an attempt to improve an expert system's performance. SEEK2 extends the capabilities of its predecessor rule(More)
Twenty-five patients with active left-sided ulcerative colitis were randomly assigned to receive either 2 g of 4-aminosalicylic acid (para-aminosalicylic acid) or placebo in a 60-mL volume as a nightly retention enema. The duration of treatment was 8 weeks. Disease activity was assessed by grading clinical symptoms of blood, mucus, urgency, sigmoidoscopic(More)
Forty patients with active ulcerative colitis were randomly assigned to receive either 4 g of oral enterically coated 4-aminosalicylic acid (para-aminosalicylic acid) or placebo. The duration of treatment was 12 weeks. Disease activity was assessed by grading clinical symptoms of blood, mucus, urgency, sigmoidoscopic findings, and degree of histological(More)
Of 279 cardiac-surgery patients receiving a mean of twelve transfusions, 47 had significantly increased transaminase concentrations 14 to 180 days postoperatively and 10 were icteric. Preoperatively, each patient randomly received high-titre HbsAb gamma-globulin, normal gamma-globulin, or placebo and was followed at intervals for 9 months. Only 3 patients(More)