Extending WHIRL with background knowledge for improved text classification     

Sarah Zelikovitz  William W. Cohen  Haym Hirsh 《Information Retrieval》2007,10(1):35-67

Intelligent use of the many diverse forms of data available on the Internet requires new tools for managing and manipulating heterogeneous forms of information. This paper uses WHIRL, an extension of relational databases that can manipulate textual data using statistical similarity measures developed by the information retrieval community. We show that although WHIRL is designed for more general similarity-based reasoning tasks, it is competitive with mature systems designed explicitly for inductive classification. In particular, WHIRL is well suited for combining different sources of knowledge in the classification process. We show on a diverse set of tasks that the use of appropriate sets of unlabeled background knowledge often decreases error rates, particularly if the number of examples or the size of the strings in the training set is small. This is especially useful when labeling text is a labor-intensive job and when there is a large amount of information available about a particular problem on the World Wide Web.

Haym HirshEmail:

  相似文献   

Letters to the editor     

Alex L. Savitz  Kyle R. Carter Ph.D.  Susan Kontos Ph.D.  Dorothy Dodd Ed.D. 《Roeper Review》2013,35(3)

  相似文献   

Effects of an Early Family Intervention on Children's Memory: The Mediating Effects of Cortisol Levels     

Daphne Blunt Bugental  Alex Schwartz  Colleen Lynch 《Mind, Brain, and Education》2010,4(4):159-170

Developmental psychologists have long been concerned with the ways that early adversity influences children's long-term outcomes. In the current study, activity of the hypothalamic–pituitary–adrenal axis of medically at-risk (e.g., preterm) infants was measured as a result of maternal participation in a novel cognitively based home visitation program (versus a Healthy Start home visitation program). Maternal participation in the cognitive intervention predicted lower basal cortisol levels among infants—with reduced levels of maternal avoidance/withdrawal serving as a mediator of this relation. Lower cortisol levels in infancy, in turn, predicted higher verbal short-term memory (STM) at age 3. STM represents a cognitive ability that has importance for children's later educational outcomes. Findings provide experimental evidence concerning the pathway by which an early intervention may produce hormonal changes that can, in turn, influence children's learning outcomes.  相似文献   

Schooled and Unschooled Immigrants     

Ronald D. Cohen 《Review of Education, Pedagogy & Cultural Studies》2013,35(3):266-272

  相似文献   

INTERROGATING THE RHETORIC OF JEWISH TEACHER PROFESSIONALIZATION BY DRAWING ON JEWISH TEACHER NARRATIVES     

Alex D. M. Pomson 《Journal of Jewish Education》2013,79(1-2):16-24

  相似文献   

Both Wrong and Bad     

Carl Cohen 《Academic Questions》2013,26(1):78-89

  相似文献   

Teachers' Perceptions of Their Pupils' Views on Rewards and Punishments     

Alex Harrop  Michelle Holmes 《Pastoral Care in Education》2013,31(1):30-34

Although sabbatical leave for teachers was suggested in the James Report more than 25 years ago, it remains as much of an unattainable ideal as ever—a sad fact in the light of the message of this paper. What Les Summers tells us clearly illustrates the potential value that sabbaticals might have for teachers: how they might return to school both refreshed and with new and innovatory ideas. The chance to study some schools in Australia enabled Summers to do just this, and he was able to see issues of disaffection here from a new perspective as a result of his experiences. He then went on to develop the idea of a programme which responds to the needs of young school leavers.  相似文献   

Strauss's Handbook of Business Information: Guide for Librarians,Students, and Researchers by Rita W. Moss and David G. Ernsthausen     

Alex Caracuzzo 《Journal of Business & Finance Librarianship》2013,18(2):186-189

  相似文献   

USING FOCUS GROUPS AS AN EDUCATIONAL METHODOLOGY: DECONSTRUCTING STEREOTYPES AND SOCIAL WORK PRACTICE MISCONCEPTIONS CONCERNING AGING AND OLDER ADULTS     

Harriet L. Cohen  Mark H. Sandel  Cecilia L. Thomas  Thomas R. Barton 《Educational gerontology》2013,39(4):329-346

During the coming years the number of older adults will increase dramatically, which will require a corresponding increase in the number of social workers who have accurate knowledge of this population. This article reports the impact focus groups with older adults and with service providers who work with older adults and their families have on baccalaureate social work (BSW) students. We find that BSW students exposed to focus groups have their negative attitudes about older adults and service providers deconstructed and replaced with more positive and accurate information about older adults. When students' misconceptions about older adults are confronted, they become more interested in choosing geriatric social work as a career option.  相似文献   

DEVELOPING MEDIA LITERACY SKILLS TO CHALLENGE TELEVISION'S PORTRAYAL OF OLDER WOMEN     

Harriet L. Cohen 《Educational gerontology》2013,39(7):599-620

To be old in our society is to be devalued. To be old and female is to experience double oppression. This article reports on a study that examined how television both reinforces and resists the prevailing images of older women in Western society. Two randomly selected television rerun episodes of The Golden Girls were selected to use as a trigger event with members of a graduate course in Social Work with older adults at a major southeastern university. The study found that television reflects societal discourse about aging by providing unchallenged images of older women and their lives. Given the power of television, educators and gerontologists must teach students to develop critical thinking and media literacy skills that challenge and deconstruct television's images about older women and to advocate for new programming that reflects more accurate and diverse portrayals of older women.  相似文献