The TREC-5 Confusion Track: Comparing Retrieval Methods for Scanned Text

A known-item search is a particular information retrieval task in which the system is asked to find a single target document in a large document set. The TREC-5 confusion track used a set of 49 known-item tasks to study the impact of data corruption on retrieval system performance. Two corrupted versions of a 55,600 document corpus whose true content was known were created by applying OCR techniques to page images. The first version of the corpus used the page images as scanned, resulting in an estimated character error rate of approximately 5%. The second version used page images that had been down-sampled, resulting in an estimated character error rate of approximately 20%. The true text and each of the corrupted versions were then searched using the same set of 49 questions. In general, retrieval methods that attempted a probabilistic reconstruction of the original clean text fared better than methods that simply accepted corrupted versions of the query text.     

The Role of Mentoring Support and Self-Management Strategies on Reported Career Outcomes

This study examined the contribution of self-management strategies to job outcomes for employees involved in mentoring relationships. Participants (n = 158) reported their use of three types of self-management strategies, the level of support functions provided by their mentors, and their job satisfaction and perceived career success. Results showed that individuals who used self-set career goals reported greater job satisfaction and perceived career success; those who engaged in positive cognitions also had higher job satisfaction; and those who used behavioral self-management strategies reported greater perceived career success. Mentoring and self-management strategies each contributed uniquely to satisfaction and perceived career satisfaction. After controlling for amount of instrumental support provided by the mentors, positive cognitions remained predictive of perceived career success, and participation in self-set career goals were related to higher levels of job satisfaction. Moderator analysis showed that the self-management strategies appeared to be useful in the absence of certain types of mentor support.     

Role of the University in Community College In-Service Education

Abstract

Of concern to many educators is in-service education of community college faculty. Some two-year colleges have looked to themselves for in-service programs and activities; many have turned to the university for this. A study was conducted among community college leaders and university professors involved in community college education to determine the current status of in-service education in the community college. Opinions related to this topic as well as the role of the university in in-service education of community college faculty were also sampled.     

The History of Entrance Examinations

Abstract

Commonly found in elementary schools, learning stations can also be a useful instructional approach for college classrooms. Learning stations prompt student groups to engage with relevant activities and have thoughtful discussions while at the same time allow instructors to monitor and interact with students.