Incremental Relevance Feedback in Japanese Text Retrieval     

Gareth Jones  Tetsuya Sakai  Masahiro Kajiura  Kazuo Sumita 《Information Retrieval》2000,2(4):361-384

The application of relevance feedback techniques has been shown to improve retrieval performance for a number of information retrieval tasks. This paper explores incremental relevance feedback for ad hoc Japanese text retrieval; examining, separately and in combination, the utility of term reweighting and query expansion using a probabilistic retrieval model. Retrieval performance is evaluated in terms of standard precision-recall measures, and also using number-to-view graphs. Experimental results, on the standard BMIR-J2 Japanese language retrieval collection, show that both term reweighting and query expansion improve retrieval performance. This is reflected in improvements in both precision and recall, but also a reduction in the average number of documents which must be viewed to find a selected number of relevant items. In particular, using a simple simulation of user searching, incremental application of relevance information is shown to lead to progressively improved retrieval performance and an overall reduction in the number of documents that a user must view to find relevant ones.  相似文献   

Collective bargaining goals of university faculty   总被引：1，自引：0，他引：1  

Allen Ponak  Mark Thompson  Wilfred Zerbe 《Research in higher education》1992,33(4):415-431

This paper examines the collective bargaining goals of 1,800 faculty members at eight Canadian universities. A particular focus of the study was the relationship between bargaining goals and traditional academic governance. The results of the analysis showed that faculty distinguish firmly between academic and nonacademic issues and deliberately choose to restrict the scope of bargaining to a relatively narrow range of issues involving money, job security, and grievance procedures. A major factor influencing this restricted bargaining scope was the confidence with and perceived influence of the traditional system of academic governance. The way in which the governance system functions helps determine whether academic and policy issues reach the bargaining table, suggesting that strong governance structures are not threatened by the advent of collective bargaining.  相似文献   

An analysis of evaluation campaigns in ad-hoc medical information retrieval: CLEF eHealth 2013 and 2014     

Lorraine Goeuriot  Gareth J. F. Jones  Liadh Kelly  Johannes Leveling  Mihai Lupu  Joao Palotti  Guido Zuccon 《Information Retrieval》2018,21(6):507-540

Since its inception in 2013, one of the key contributions of the CLEF eHealth evaluation campaign has been the organization of an ad-hoc information retrieval (IR) benchmarking task. This IR task evaluates systems intended to support laypeople searching for and understanding health information. Each year the task provides registered participants with standard IR test collections consisting of a document collection and topic set. Participants then return retrieval results obtained by their IR systems for each query, which are assessed using a pooling procedure. In this article we focus on CLEF eHealth 2013 and 2014s retrieval task, which saw topics created based on patients’ information needs associated with their medical discharge summaries. We overview the task and datasets created, and the results obtained by participating teams over these two years. We then provide a detailed comparative analysis of the results, and conduct an evaluation of the datasets in the light of these results. This twofold study of the evaluation campaign teaches us about technical aspects of medical IR, such as the effectiveness of query expansion; the quality and characteristics of CLEF eHealth IR datasets, such as their reliability; and how to run an IR evaluation campaign in the medical domain.  相似文献   

Forms of capital and agency as mediations in negotiating employability of international graduate migrants     

Thanh Pham  Michael Tomlinson  Chris Thompson 《Globalisation, Societies & Education》2019,17(3):394-405

This study deployed a qualitative approach to explore an alternative perspective regarding graduate migrants’ employability. Twenty graduate migrants in Australia participated in in-depth interviews. Findings revealed graduate migrants faced various challenges in the target labour market, and to successfully secure employment it was important for them to develop key forms of capital – i.e., excellent technical knowledge, relationships with ‘significant others’, strong career identity and psychological resilience, and exercise agency in interlinking these capitals so that they could make use of their strengths and coat weaknesses. Results from the study imply that managing, teaching, and professional staff members should collaborate closely to develop well-rounded programmes to sufficiently equip international students with multidimensional resources.  相似文献   

Infants' affective responses in the strange situation: effects of prematurity and of quality of attachment   总被引：1，自引：0，他引：1  

A Frodi  R Thompson 《Child development》1985,56(5):1280-1290

20 full-term and 20 preterm infants and their mothers were videotaped in the Strange Situation, and the security of their attachment relationships was later determined. Each episode was subsequently divided into consecutive 15-sec intervals, during each of which ratings of facial expressions were performed. From these ratings several summary dimensions of affect were derived (e.g., affective peak and range during all episodes, latency and rise time for onset of distress during separation episodes, and recovery time during reunions). Term and preterm infants did not differ from one another in either the security of attachment or their affective expression and regulation. When groups were combined, patterns of affective expression were significantly different for infants classified as insecure-avoidant, insecure-ambivalent, and securely attached, as well as for group B1 + B2 infants compared to group B3 + B4 babies. The findings indicated that attachment-related affect may reflect an affect continuum that underlies certain mother- and stranger-directed behaviors in the Strange Situation, but that not all aspects of reunion behavior can be predicted by prior separation reactions.  相似文献   

The Development of a Curriculum Toolkit with American Indian and Alaska Native Communities     

Nicole L. Thompson  Dwight Hare  Tracie T. Sempier  Cathy Grace 《Early Childhood Education Journal》2008,35(5):397-404

This article explains the creation of the Growing and Learning with Young Native Children curriculum toolkit. The curriculum toolkit was designed to give American Indian and Alaska Native early childhood educators who work in a variety of settings the framework for developing a research-based, developmentally appropriate, tribally specific curriculum to use with Native children aged 0–3. The curriculum toolkit should assist Native people in preserving and maintaining their unique culture and language. Challenges specific to the implementation of an early childhood program in Indian Country have been explained. A brief historical overview of Indian education has been included. The contents of this article were developed under Grant #P116Z05-0056 from the US Department of Education. However, the contents do not necessarily represent the policy of the US Department of Education and the reader should not assume endorsement by the Federal Government.  相似文献   

Identification of Pre-examination Errors in the Chemical Pathology Laboratory at the University Hospital of the West Indies     

Lowell L. Dilworth  Donovan A. McGrowder  Rory K. Thompson 《Indian journal of clinical biochemistry : IJCB》2014,29(2):227-231

This study evaluated the types and frequencies of pre-examination errors recorded in the chemical pathology laboratory at the University Hospital of the West Indies, Jamaica. This was a retrospective analysis of errors recorded over a three year period. Data analysis was done on an average of 519,084 samples collected and tested per year. Samples included blood, urine, stool and other fluids. Pre-examination errors were identified and recorded following visual inspection of the samples and corresponding request forms by laboratory staff, then subsequently by the Senior Medical Technologist. Errors were generally classified as inappropriate sample (58 %), inappropriate form (23.4 %), inappropriate sample volume (9.3 %) and inappropriate sample tube (9.3 %). Over 90 % of recorded pre-examination errors were related to blood samples while urine samples accounted for 6.8 % error. Pre-examination errors were lower at this study location than elsewhere. Measures aimed at reducing instances of these errors are recommended for improved laboratory quality output.  相似文献   

Changes in joint kinetics during learning the longswing on high bar     

Genevieve K.R. Williams  Gareth Irwin  David G. Kerwin  Karl M. Newell 《Journal of sports sciences》2015,33(1):29-38

Biomechanics helps us understand the association between technique changes and performance improvement during learning. The aim of this research was to investigate joint kinetic characteristics of technique during learning of the longswing on the high bar. Twelve male, novice participants took part in the learning study. During swing attempts in 8 weekly testing sessions, kinematic data were collected. Inverse dynamics analysis was performed from known zero forces at the toes to quantify joint moments and power at the hips and shoulders. Key biomechanical constraints that limited performance outcome were identified based on changes in joint kinetics during learning. These constraints were the ability to perform a large shoulder power and to overcome passive kinetics acting during the downswing. Constraints to action at the level of joint kinetics differentially challenge learners and therefore could underpin more individual, specific learning interventions. Functional phases, defined by maximum hyperextension to flexion of the hips and maximum flexion to extension of the shoulders, did not describe the key joint kinetics of the hip and shoulder for novices. The functional phases may serve however to identify novices that were unable to overcome the passive kinetic constraint.  相似文献   

Biomechanical energetic analysis of technique during learning the longswing on the high bar     

Genevieve Kate Roscoe Williams  Gareth Irwin  David George Kerwin  Karl Maxim Newell 《Journal of sports sciences》2015,33(13):1376-1387

Biomechanical energetic analysis of technique can be performed to identify limits or constraints to performance outcome at the level of joint work, and to assess the mechanical efficiency of techniques. The aim of this study was to investigate the biomechanical energetic processes during learning the longswing on the high bar. Twelve male, novice participants took part in a training study. Kinematic and kinetics data were collected during swing attempts in eight weekly testing sessions. Inverse dynamics analysis was performed from known zero forces at the toes. Joint work, total energy, and bar energy were calculated. Biomechanical constraints to action, that is, limits to novice performance, were identified as “total work” and “shoulder work”. The most biomechanically efficient technique was associated with an onset of the hip functional phase and joint work that occurred between 10–45° before the bottom of the swing. The learning of gross motor skills is realised through the establishment of a set of techniques with task specific biomechanical constraints. Knowledge of the biomechanical constraints to action associated with more effective and efficient techniques will be useful for both assessing learning and establishing effective learning interventions.  相似文献   

Want to Improve Undergraduate Thesis Writing? Engage Students and Their Faculty Readers in Scientific Peer Review     

Reynolds JA  Thompson RJ 《CBE life sciences education》2011,10(2):209-215

One of the best opportunities that undergraduates have to learn to write like a scientist is to write a thesis after participating in faculty-mentored undergraduate research. But developing writing skills doesn't happen automatically, and there are significant challenges associated with offering writing courses and with individualized mentoring. We present a hybrid model in which students have the structural support of a course plus the personalized benefits of working one-on-one with faculty. To optimize these one-on-one interactions, the course uses BioTAP, the Biology Thesis Assessment Protocol, to structure engagement in scientific peer review. By assessing theses written by students who took this course and comparable students who did not, we found that our approach not only improved student writing but also helped faculty members across the department--not only those teaching the course--to work more effectively and efficiently with student writers. Students who enrolled in this course were more likely to earn highest honors than students who only worked one-on-one with faculty. Further, students in the course scored significantly better on all higher-order writing and critical-thinking skills assessed.  相似文献