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This paper presents a classifier for text data samples consisting of main text and additional components, such as Web pages and technical papers. We focus on multiclass and single-labeled text classification problems and design the classifier based on a hybrid composed of probabilistic generative and discriminative approaches. Our formulation considers individual component generative models and constructs the classifier by combining these trained models based on the maximum entropy principle. We use naive Bayes models as the component generative models for the main text and additional components such as titles, links, and authors, so that we can apply our formulation to document and Web page classification problems. Our experimental results for four test collections confirmed that our hybrid approach effectively combined main text and additional components and thus improved classification performance. 相似文献
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Naonori Kodate Kashiko Kodate Takako Kodate 《European Journal of Engineering Education》2014,39(6):648-665
The phenomenon of women's underrepresentation in engineering is well known. However, the slow progress in achieving better gender equality here compared with other domains has accentuated the ‘numbers’ issue, while the quality aspects have been largely ignored. This study aims to shed light on both these aspects via the lens of mentors, who are at the coalface of guiding female engineers through their education and subsequent careers. Based on data collected from 25 mentors (8 men and 17 women from 8 countries), the paper explores their experiences of being mentors, as well as their views on recommended actions for nurturing female engineers. The findings reveal that the primary motivation for becoming a mentor was personal for men and women. Many mentors from countries with relatively lower female labour participation rates perceive their roles as guarantors of their mentees’ successful future career paths, and a similar trend can be found in mentors in academia. The study underscores the need for invigorating mentors’ roles in order to secure a more equitable future for engineering education. 相似文献
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Keiko Kurata Mamiko Matsubayashi Shinji Mine Tomohide Muranushi Shuichi Ueda 《Information processing & management》2007
In recent years, electronic journals are in common use in scholarly communication and we can interpret this situation in various ways. On the one hand, we can say that scholarly communication is now much dependent on electronic resources. On the other hand, it would be too simplistic to say that scholarly communication is now greatly dependent on electronic resources because researchers seldom use other electronic resources. The purpose of this article is to show the position of electronic journals in scholarly communication based on Japanese researchers’ information behavior and estimation. The main focus is on distinguishing the function of scholarly journal and the electronic form. A questionnaire was sent to 1427 physicists, 1026 chemists and 1276 pathologists in universities and other research institutes all over Japan, of whom 775 (54.3%), 494 (48.1%) and 541 (42.4%), respectively, supplied answers. The main results are as follows. Japanese researchers in STM fields use electronic journals as a matter of course, and other electronic resources to some extent, for accessing information; but this shift to electronic resources seemed to be not a transformation but a modification of traditional patterns of use. Researchers still rely on traditional scholarly journals for accessing information and publication, although their recognition has begun to change. 相似文献
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The global community, from UNESCO to NGOs, is committed to promoting the status of women in science, engineering and technology,
despite long-held prejudices and the lack of role models. Previously, when equality was not firmly established as a key issue
on international or national agendas, women’s colleges played a great role in mentoring female scientists. However, now that
a concerted effort has been made by governments, the academic community and the private sector to give women equal opportunities,
the raison d’être of women’s universities seems to have become lost. This paper argues otherwise, by demonstrating that women’s universities
in Japan became beneficiaries of government initiatives since the early 2000s to reverse the low ratio of women in scientific
research. The paper underscores the importance of the reputation of women’s universities embedded in their institutional foundations,
by explaining how female scientific communities take shape in different national contexts. England, as a primary example of
a neoliberal welfare regime, with its strong emphasis on equality and diversity, promoted its gender equality policy under
the auspices of the Department of Trade and Industry. By contrast, with a strong emphasis on family values and the male-breadwinner
model, the Japanese government carefully treated the goal of supporting female scientists from the perspective of the equal
participation of both men and women rather than that of equality. Following this trend, rather contradictorily, women’s universities,
with their tradition of fostering a ‘good wife, wise mother’ image, began to be highlighted as potential gender-free institutions
that provided role models and mentoring female scientists. By drawing on the cases of England and Japan, this paper demonstrates
how the idea of equality can be framed differently, according to wider institutional contexts, and how this idea impacts on
gender policies. 相似文献
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