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Negation recognition in medical narrative reports 总被引：1，自引：0，他引：1
Substantial medical data, such as discharge summaries and operative reports are stored in electronic textual form. Databases
containing free-text clinical narratives reports often need to be retrieved to find relevant information for clinical and
research purposes. The context of negation, a negative finding, is of special importance, since many of the most frequently
described findings are such. When searching free-text narratives for patients with a certain medical condition, if negation
is not taken into account, many of the documents retrieved will be irrelevant. Hence, negation is a major source of poor precision
in medical information retrieval systems. Previous research has shown that negated findings may be difficult to identify if
the words implying negations (negation signals) are more than a few words away from them. We present a new pattern learning
method for automatic identification of negative context in clinical narratives reports. We compare the new algorithm to previous
methods proposed for the same task, and show its advantages: accuracy improvement compared to other machine learning methods,
and much faster than manual knowledge engineering techniques with matching accuracy. The new algorithm can be applied also
to further context identification and information extraction tasks.
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| Lior RokachEmail: |
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Libraries continue to be an important source of books for young people, though relatively little is known about how gender and age influence visitation frequency for this purpose. In addition, while supporting children to choose books is part of the role of both school and public librarians, little is known about the strategies and processes children use to select books, and the beliefs and attitudes that underpin them. Findings from the 2016 Western Australian Study in Children's Book Reading offer insights into these areas that can support librarians to guide book choice, and they encourage targeted intervention to ensure that boys and older children make use of their libraries to support their literacy growth. 相似文献
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AbstractSome resilient students with LD succeed ‘against the odds’ and reach college. The goals of the study are to explore their resources and barriers during their studies. The relationships between academic self-efficacy (ASE) and personal resources (sense of coherence (SOC) and hope) among college students with learning disabilities (LD) will be examined. The sample consisted of 438 college students divided into two subgroups: 149 students with LD and 289 Non-LD students. Results indicated that college students with LD reported lower levels of ASE, as well as lower levels of hope subscales and SOC. Persistent challenges of early learning distress experienced by those students during school periods continue to be prevalent during their college years. The ASE was predicted by the personal resources, and the risk factor (tiredness lost its significance). The importance of personal resources (SOC and hope subscales) was further emphasised by the mediation model (PROCESS). They mediated the relationships between LD and ASE. These outcomes call for empowering interventional programmes in order to promote hopeful thinking and personal coherence. 相似文献
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Israeli junior high‐school science teachers usually have a background in biology, and their knowledge of physics is limited. We show that by improving teachers' qualitative understanding it is possible to increase their confidence and willingness to teach physics. We conducted three‐day workshops for teachers (n = 92), which were followed by ongoing activities and support. The teacher workshops were based on a new qualitative approach that we developed for studying mechanics, which has been shown to be effective with students. A study of teachers who had not participated in the workshop shows that they had the same conceptual difficulties as their students. A comparison of pre‐ and post‐workshop questionnaires indicates that the participating teachers gained self‐confidence in their ability to explain everyday phenomena, changed their views about the relevance and interest of physics to the students and were willing to implement the method in their classes. 相似文献
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Social work introductory textbooks reflect myriad practical interests, pedagogical concerns, and theoretical considerations. However, they also present students with accepted views, dominant perspectives, and main discourses of knowledge. In light of this centrality, the present article examines the representation of the concept of “social class” in introductory textbooks as a way to look at the construction of the concept in social work education. Based on the content analysis study of 50 introductory textbooks, the article suggests that social work education has overlooked or even denied the relevance of social class. Class differences, as part of other categories of power such as race, ethnicity, and gender are crucial factors in explaining diversity and inequality. As social justice is one of the main premises of social work, the question of how to prepare students to deal with class issues as future practitioners seems to be very important, especially in light of increasing social class gaps. 相似文献
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Schools of social work are increasingly offering study abroad courses as a strategy for enhancing future practitioners’ knowledge and skills in serving individuals and families of diverse sociocultural backgrounds. Literature relative to such educational initiatives has focused on the characteristics, motivations, and outcomes for students and faculty; challenges and strategies to address them; different formats of course delivery; and, to a limited degree, faculty who develop and implement the courses. Using a study abroad course about understanding trauma in cultural context, the current article discusses and illustrates pedagogic and logistic benefits of the citizen of two worlds model in faculty leadership of study abroad courses. 相似文献
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Roni Strier 《Higher Education》2011,62(1):81-97
The development of meaningful partnerships with communities is a shared concern of many higher education institutions. However,
the building of significant partnerships between universities and communities is still a complex task, which generates multiple
tensions. Based on a qualitative study that examined the lived experiences of participants in an innovative university-community
partnership in Israel, the article analyzes the concept of partnership from a social constructivist theoretical perspective.
The study focused on four research areas: the experience of partnership; the perception of partnership; the barriers to partnership-building,
and the impact of participation on participants. Findings challenge essentialist views of partnership and highlight the constructed
and discursive nature of the concept. The article found several crucial factors to be acknowledged in the process of partnership
management: role perspectives, group affiliation, institutional context, power relations, the organizational culture of the
partnership, and the societal perceptions of social problems addressed by the partnership. It concludes with some recommendations
for the management of more meaningful university-community partnerships. 相似文献
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Academic plagiarism becomes very easy due to new opportunities provided by the Internet era （Scrinber, 2003; Underwood ＆ Sazabo, 2003; Ross, 2005）. We believe that academic dishonesty is a major issue, because it strikes at the heart of the academic and social values： honesty, trust and integrity. When dealing with education students, the future educators of children, academic dishonesty takes on added significance with much graver consequences for our society. This paper is aimed to reveal the opinions of 200 Israeli teacher education students towards different aspects of plagiarism. These responses, which were collected using likert scale questionnaire, led us to define some principles for a plan to reduce academic dishonesty, especially internet based plagiarism （Mc Murtry, 2001; Foster, 2002; Landau, Druen, ＆ Arcuri, 2002; Murray, 2002）. We suggest focusing on a plan for an institutional ethic code to reduce plagiarism and unconscious academic dishonesty. 相似文献
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