Northampton Community College

About: Northampton Community College is a education organization based out in Bethlehem, Pennsylvania, United States. It is known for research contribution in the topics: Population & Poison control. The organization has 3410 authors who have published 4582 publications receiving 130398 citations. The organization is also known as: Northampton County Area Community College.

Evaluating interactive systems in TREC

Abstract: The TREC (Text REtrieval Conference) experiments were designed to allow large-scale laboratory testing of information retrieval techniques. As the experiments have progressed, groups within TREC have become increasingly interested in finding ways to allow user interaction without invalidating the experimental design. The development of an “interactive tract” within TREC to accommodate user interaction has required some modifications in the way the retrieval tasks is designed. In particular there is a need to simulate a realistic interactive searching task within a laboratory environment. Through successive interactive studies in TREC, the Okapi team at City University London has identified methodological issues relevant to this process. A diagnostic experiment was conducted as a follow-up to TREC searches which attempted to isolate the human and automatic contributions to query formulation and retrieval performance. © 1996 John Wiley & Sons, Inc.

Code growth, explicitly defined introns, and alternative selection schemes

Abstract: Previous work on introns and code growth in genetic programming is expanded on and tested experimentally. Explicitly defined introns are introduced to tree-based representations as an aid to measuring and evaluating intron behavior. Although it is shown that introns do create code growth, they are not its only cause. Removing introns merely decreases the growth rate; it does not eliminate it. By systematically negating various forms of intron behavior, a deeper understanding of the causes of code growth is obtained, leading to the development of a system that keeps unnecessary bloat to a minimum. Alternative selection schemes and recombination operators are examined and improvements demonstrated over the standard selection methods in terms of both performance and parsimony.

An evaluation of automatic query expansion in an online library catalogue

Abstract: An automatic query expansion (AQE) facility in an online catalogue was evaluated in an operational library setting. The Okapi experimental system had other features including: ranked output ‘best match’ keyword searching, automatic stemming, spelling normalisation and cross referencing as well as relevance feedback. A combination of transaction log analysis, search replays, questionnaires and interviews was used for data collection. Findings show that contrary to previous results, AQE was beneficial in a substantial number of searches. User intentions, the effectiveness of the ‘best match’ search and user interaction were identified as the main factors affecting the take‐up of the query expansion facility.

Deliberate self-harm patients with alcohol disorders: characteristics, treatment, and outcome.

Abstract: Deliberate self-harm (DSH) patients with alcohol problems present a considerable challenge for clinical services. In a study of a sample of 150 DSH patients who were representative of all such patients seen at a general hospital during the study period, 40 patients with an ICD-10 diagnosis of alcohol dependence or harmful use of alcohol were compared with the remainder of the sample. The treatment of the patients with alcohol disorders before and after the episode of DSH and the outcome 12-20 months later were also investigated. Compared with other DSH patients, those with an alcohol diagnosis were older and more often male, living alone, unemployed, sick, disabled, or with a past history of DSH. They also had higher scores on measures of anger, aggression, and impulsivity. Comorbid psychiatric disorder was present in 37 (92.5%) patients, this being depression in three-quarters of those cases. Fourteen (35.0%) patients were receiving treatment from the psychiatric services prior to DSH, and 33 (82.5%) were subsequently offered treatment. Of the patients who were followed up, 37.9% remained in contact with psychiatric services, 55.2% showed poor compliance with treatment and 44.8% reported a further episode of DSH. All patients presenting after DSH need to be carefully screened for alcohol disorders and for comorbid psychiatric diagnoses. Treatment of DSH patients with alcohol disorders should include the treatment of any comorbid depressive illness.