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11.
Jacques Savoy 《Information Retrieval》2007,10(6):509-529
This paper reports on the underlying IR problems encountered when indexing and searching with the Bulgarian language. For
this language we propose a general light stemmer and demonstrate that it can be quite effective, producing significantly better
MAP (around + 34%) than an approach not applying stemming. We implement the GL2 model derived from the Divergence from Randomness paradigm and find its retrieval effectiveness better than other probabilistic, vector-space and language models. The resulting
MAP is found to be about 50% better than the classical tf idf approach. Moreover, increasing the query size enhances the MAP by around 10% (from T to TD). In order to compare the retrieval
effectiveness of our suggested stopword list and the light stemmer developed for the Bulgarian language, we conduct a set
of experiments on another stopword list and also a more complex and aggressive stemmer. Results tend to indicate that there
is no statistically significant difference between these variants and our suggested approach. This paper evaluates other indexing
strategies such as 4-gram indexing and indexing based on the automatic decompounding of compound words. Finally, we analyze
certain queries to discover why we obtained poor results, when indexing Bulgarian documents using the suggested word-based
approach. 相似文献
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Emmanuel S. Da Rocha Marcos R. Kunzler Maarten F. Bobbert Jacques Duysens 《Journal of sports sciences》2018,36(11):1305-1311
Walking is one of the preferred exercises among elderly, but could a prolonged walking increase gait variability, a risk factor for a fall in the elderly? Here we determine whether 30 min of treadmill walking increases coefficient of variation of gait in elderly. Because gait responses to exercise depend on fitness level, we included 15 sedentary and 15 active elderly. Sedentary participants preferred a lower gait speed and made smaller steps than the actives. Step length coefficient of variation decreased ~16.9% by the end of the exercise in both the groups. Stride length coefficient of variation decreased ~9% after 10 minutes of walking, and sedentary elderly showed a slightly larger step width coefficient of variation (~2%) at 10 min than active elderly. Active elderly showed higher walk ratio (step length/cadence) than sedentary in all times of walking, but the times did not differ in both the groups. In conclusion, treadmill gait kinematics differ between sedentary and active elderly, but changes over time are similar in sedentary and active elderly. As a practical implication, 30 min of walking might be a good strategy of exercise for elderly, independently of the fitness level, because it did not increase variability in step and stride kinematics, which is considered a risk of fall in this population. 相似文献
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Angeline Liva Eliane Fijalkow Jacques Fijalkow 《European Journal of Psychology of Education - EJPE》1994,9(4):321-330
Two experiments were conducted to see if teaching poor readers to use inner speech could improve their reading and writing. In the first experiment, there were 8 third grade children, 4 in the experimental group and 4 in the control one, matched from a pre-test of reading. In the experimental group, the children were trained to use inner speech in 27 tasks, from explicit self-speech of the adult and of the child to implicit self-speech by the child alone. The results show significant differences between the two groups in the post-test of reading. In the second experiment, there were 6 students in second grade, 3 in the experimental group and 3 in the control one. In the experimental group, the children were trained to use inner speech in 18 tasks: 6 cognitive tasks that do not require short term memory as in the first experiment, 6 reading tasks, 6 writing tasks. In the experimental group, the children were trained to use self-speech to process the tasks whereas, in the control group, the adult’s help was mostly visual. The results were that the experimental group succeeded significantly better in the post-tests of reading and writing. 相似文献
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Jacques Delors 《International Review of Education/Internationale Zeitschrift für Erziehungswissenschaft/Revue internationale l'éducation》2013,59(3):319-330
This is an English translation of a speech held by French economist and politician Jacques Delors, former President of the European Commission, on 7 November 2011 at the opening of the International Congress on Lifelong Learning in Donostia/San Sebastián, Spain. Fifteen years after the International Commission on Education for the Twenty-first Century submitted its report entitled Learning: The treasure within to UNESCO, Delors briefly reviews the four pillars of education and then considers the current growth of continuing education, its primary functions and general trends. Next, he discusses how basic education and continuing education might be combined into a lifelong learning approach. This is followed by some thoughts about the educational society and the challenges of current changes it is facing which include the challenge of globalisation, the phenomenon of contemporary individualism, the influence of the media and modern technologies and the dominant economic (market-orientated) ideology. Delors concludes his speech by stressing that lifelong learning is essential for gaining self-esteem and the ability to take control of one’s own life. 相似文献
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Jacques Ascher 《Performance Improvement》2013,52(5):36-43
Maximization of training influence on individual performance through changes in employee knowledge, skills, and abilities is a paramount concern of organizations. However, training without implementation in a work setting cannot achieve its goals. In this article, the author maps the primary factors that influence transfer of what is learned in training to work settings and provides some evidence‐based recommendations and implications for improved performance. 相似文献
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