Character N-Gram Tokenization for European Language Text Retrieval     

Paul McNamee  James Mayfield 《Information Retrieval》2004,7(1-2):73-97

The Cross-Language Evaluation Forum has encouraged research in text retrieval methods for numerous European languages and has developed durable test suites that allow language-specific techniques to be investigated and compared. The labor associated with crafting a retrieval system that takes advantage of sophisticated linguistic methods is daunting. We examine whether language-neutral methods can achieve accuracy comparable to language-specific methods with less concomitant software complexity. Using the CLEF 2002 test set we demonstrate empirically how overlapping character n-gram tokenization can provide retrieval accuracy that rivals the best current language-specific approaches for European languages. We show that n = 4 is a good choice for those languages, and document the increased storage and time requirements of the technique. We report on the benefits of and challenges posed by n-grams, and explain peculiarities attendant to bilingual retrieval. Our findings demonstrate clearly that accuracy using n-gram indexing rivals or exceeds accuracy using unnormalized words, for both monolingual and bilingual retrieval.  相似文献   

Scholarly communication in the digital environment: what do authors want?     

Ian Rowlands  Dave Nicholas  Paul Huntington 《Learned Publishing》2004,17(4):261-273

This article reports on a large‐scale international survey of authors' perception and experience of the journals system conducted by ciber in association with National Opinion Polls (NOP). It explores the factors that inform authors' decisions where to publish and, in particular, which groups of readers they perceive to be most important. It probes readership behaviour and the values that underlie authors' attitudes towards copyright and emerging business models, notably open access. It is concluded that many aspects of author behaviour are highly conservative and that a significant shift towards open access is, in the short to medium term, highly unlikely.  相似文献   

The failure of a paradigm | Henk F. Moed. Applied Evaluative Informetrics,Springer International Publishing (2017)     

Paul Wouters 《Journal of Informetrics》2018,12(2):534-540

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Full of Wonder     

Paul Martin Lester 《Visual Communication Quarterly》2016,23(4):234-235

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(Un)knowing Diversity: Researching Narratives of Neocolonial Classrooms Through Youth’s Testimonies,by Paul Badenhorst     

Reviewed by Paul Badenhorst 《Journal of Language, Identity & Education》2016,15(1):64-66

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Democratisation,rights and accountability in education systems     

Nitya Rao  Paul Morris  Yusuf Sayed 《Compare》2014,44(3):309-313

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Big data and little people     

Paul Hewson  Helen MacGillivray 《Teaching Statistics》2016,38(3):75-76

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Editorial     

Paul A. Kurzman 《Journal of Teaching in Social Work》2017,37(5)

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Editorial     

Paul Conway  Aisling Leavy  Emer Smyth  Maeve O'Brien 《Irish Educational Studies》2014,33(3):225-227

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Comparing the magnitude and direction of asymmetry during the squat,countermovement and drop jump tests in elite youth female soccer players     

Chris Bishop  Lucas A. Pereira  Valter P. Reis  Paul Read  Anthony N. Turner  Irineu Loturco 《Journal of sports sciences》2020,38(11-12):1296-1303

ABSTRACT

The aims of the present study were to provide an in-depth comparison of inter-limb asymmetry and determine how consistently asymmetry favours the same limb during different vertical jump tests. Eighteen elite female under-17 soccer players conducted unilateral squat jumps (SJ), countermovement jumps (CMJ) and drop jumps (DJ) on a portable force platform, with jump height, peak force, concentric impulse and peak power as common metrics across tests. For the magnitude of asymmetry, concentric impulse was significantly greater during the SJ test compared to CMJ (p = 0.019) and DJ (p = 0.003). No other significant differences in magnitude were present. For the direction of asymmetry, Kappa coefficients revealed fair to substantial levels of agreement between the SJ and CMJ (Kappa = 0.35 to 0.61) tests, but only slight to fair levels of agreement between the SJ and DJ (Kappa = ?0.26 to 0.18) and CMJ and DJ (Kappa = ?0.13 to 0.26) tests. These results highlight that the mean asymmetry value may be a poor indicator of true variability of between-limb differences in healthy athletes. The direction of asymmetry may provide a useful monitoring tool for practitioners in healthy athletes, when no obvious between-limb deficit exists.  相似文献