Beyond entities: promoting explorative search with bundles     

Ilaria Bordino  Mounia Lalmas  Yelena Mejova  Olivier Van Laere 《Information Retrieval》2016,19(5):447-486

Search engines are increasingly going beyond the pure relevance of search results to entertain users with information items that are interesting and even surprising, albeit sometimes not fully related to their search intent. In this paper, we study this serendipitous search space in the context of entity search, which has recently emerged as a powerful paradigm for building semantically rich answers. Specifically, our work proposes to enhance an explorative search system that represents a large sample of Yahoo Answers as an entity network, with a result structuring that goes beyond ranked lists, using composite entity retrieval, which requires a bundling of the results. We propose and compare six bundling methods, which exploit topical categories, entity specializations, and sentiment, and go beyond simple entity clustering. Two large-scale crowd-sourced studies show that users find a bundled organization—especially based on the topical categories of the query entity—to be better at revealing the most useful results, as well as at organizing the results, helping to discover novel and interesting information, and promoting exploration. Finally, a third study of 30 simulated search tasks reveals the bundled search experience to be less frustrating and more rewarding, with more users willing to recommend it to others.  相似文献   

Higher education students in contemporary France     

Olivier Galland IV  Marco Oberti 《教育政策杂志》2013,28(1):105-116

The number of students entering higher education started to increase significantly in the mid-1960s. This sharp growth has gone together with diversification in the social background of those attending, creation of new tracks (mainly in technology) and, more recently, a number of pedagogical innovations. Consequently, higher education students in the 1990s have little in common with those described by Pierre Bourdieu and Jean-Claude Passeron in Les héritiers, published in 1964: they are not just young bourgeois whose university career confirms ex-post the social position of his or her family. The relative democratization of access to higher education has allowed young people from other social classes to continue their studies after the baccalauréat. However, this democratization has also created new problems for higher education institutions. They must make financial, organizational and pedagogical adaptation to mass schooling. Higher education students also confront new problems in adapting to such demands of university work as autonomy and initiative. Students' living conditions have also changed: while remaining economically dependent on their parents, they enjoy, especially in the provinces, considerable freedom in the running of their personal lives.  相似文献   

How can students’ academic performance in statistics be improved? Testing the influence of social and temporal-self comparison feedback in a web-based training environment     

Marine Delaval  Nicolas Michinov  Olivier Le Bohec  Benjamin Le Hénaff 《Interactive Learning Environments》2017,25(1):35-47

The aim of this study was to examine how social or temporal-self comparison feedback, delivered in real-time in a web-based training environment, could influence the academic performance of students in a statistics examination. First-year psychology students were given the opportunity to train for a statistics examination during a semester by doing online exercises in a web-based training environment. Once connected, students received in real-time either social comparison feedback (their score was compared to the mean score of all first-year students) or temporal-self comparison feedback (their score was compared, week by week, with their own previous score). The fact that students were free to connect to the web-based training environment heightened self-regulation differences such as academic procrastination, which was considered as a moderating variable in this study. Because academic performance was measured, the students’ background in mathematics and statistics was also controlled. Irrespective of the students’ background, the results reveal a positive influence of social comparison feedback on statistics exam performance, but only among students who did not delay doing exercises in the web-based training environment. By contrast, temporal-self comparison feedback did not have any effect on performance. Some recommendations for optimizing the efficacy of web-based training environments can be proposed, taking into account both social comparison feedback and academic procrastination.  相似文献   

Effects of multicycle-run training on triathlete performance     

Hue O  Valluet A  Blonc S  Hertogh C 《Research quarterly for exercise and sport》2002,73(3):289-295

The purpose of this study was to determine the effect of triathlon training using multiple, short cycle-run sequences (multicycle-run training) on cycle-run performance. Twelve competitive triathletes, randomized into two groups, underwent multicycle-run training or normal training for 6 weeks. During this period, baseline training remained the same for both groups, and only the high-intensity component differed. The differentiated exercises were performed at or above 100% maximal aerobic velocity. The improvements in overall cycle-run performance were similar (3.3 +/- 1.4 % and 6.1 +/- 1.7% rise in Performance in multicycle-run and normal training, respectively). However, the improvement in performance was significantly greater for the multicycle-run training (-11.2 +/- 6.8 s versus -1.2 +/- 7. 7 s for multicycle-run training and normal training, respectively) during both the cycle-run change and the first 333-m lap, which together are termed the cycle-run transition. We concluded that 6 weeks of multicycle-run training did not induce greater improvement in cycle-run performance than did normal training in competitive triathletes. However, it did induce significant improvement in the cycle-run transition. This finding indicates that multicycle-run training may help competitive triathletes to develop greater skill and better physiological adaptations during this critical transition period of the triathlon race.  相似文献   

A French botanist in North America     

Perru  Olivier 《Metascience》2021,30(1):127-129

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Transferphänomene in der Motorik     

Claudia Reiter  Christoph Duntz  Norbert Olivier 《Sportwissenschaft》2003,33(2):224-226

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Slogans and the educator     

Olivier Reboul 《Prospects》1979,9(3):296-307

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Complementarities in organizational design and the diffusion of information technologies: An empirical analysis     

Rachel Bocquet  Olivier Brossard  Mareva Sabatier 《Research Policy》2007,36(3):367-386

We use a specially designed survey on French firms located in Haute-Savoie to provide empirical evidence suggesting that Information and Communication Technologies adoption is not only influenced by the traditional factors of technology diffusion but also by complementarity effects between strategies, organization and information technologies. The data collected permitted several advances. Firstly, we could study authentic ICT while the recent literature has mainly focused on computer capital stocks or automation tools. Secondly, we constructed measures of the determinants put forward by the models of technology diffusion. Thirdly, we studied three kinds of practices: organizational and strategic practices, technological choices.  相似文献   

The mystery of the Einstein-Poincaré connection     

Darrigol O 《Isis; an international review devoted to the history of science and its cultural influences》2004,95(4):614-626

This essay discusses attempts that have been made to explain the striking similarities between two theories propounded in 1905 by Albert Einstein and Henri Poincaré without any mutual reference.  相似文献   

Attention-Deficit/Hyperactivity Disorder: Underlying Deficits in Achievement Motivation     

M. A. J. Olivier  D. S. Steenkamp 《International journal for the advancement of counseling》2004,26(1):47-63

This South African study aims at contributing to the debate regarding the processes underlying the core deficits of Attention-Deficit/Hyperactivity Disorder (ADHD) by investigating the motivational factors underlying the symptoms of ADHD. It investigates the difference between adolescents with ADHD (combined type) and adolescents without ADHD regarding their achievement motivation. The results add to previous knowledge regarding the motivational deficits demonstrated by ADHD children and provide a valuable insight into their achievement motivational patterns, especially regarding negative fear of failure and the motive to achieve. Recommendations are suggested regarding educational and therapeutic strategies to improve the ADHD child's motivation at home and at school.  相似文献