Improving search via personalized query expansion using social media

Social tagging systems have gained increasing popularity as a method of annotating and categorizing a wide range of different web resources. Web search that utilizes social tagging data suffers from an extreme example of the vocabulary mismatch problem encountered in traditional information retrieval (IR). This is due to the personalized, unrestricted vocabulary that users choose to describe and tag each resource. Previous research has proposed the utilization of query expansion to deal with search in this rather complicated space. However, non-personalized approaches based on relevance feedback and personalized approaches based on co-occurrence statistics only showed limited improvements. This paper proposes a novel query expansion framework based on individual user profiles mined from the annotations and resources the user has marked. The underlying theory is to regularize the smoothness of word associations over a connected graph using a regularizer function on terms extracted from top-ranked documents. The intuition behind the model is the prior assumption of term consistency: the most appropriate expansion terms for a query are likely to be associated with, and influenced by terms extracted from the documents ranked highly for the initial query. The framework also simultaneously incorporates annotations and web documents through a Tag-Topic model in a latent graph. The experimental results suggest that the proposed personalized query expansion method can produce better results than both the classical non-personalized search approach and other personalized query expansion methods. Hence, the proposed approach significantly benefits personalized web search by leveraging users’ social media data.     

The Music Industry

After finding that factor analysis is used extensively in the journal of Broadcasting &; Electronic Media, and further finding that there is little consistency to how the analysis is used, this article proposes some standards which authors ought to consider when using factor analysis, especially releasing the limits on the number of factors in exploratory analysis, and using structural models for confirmatory analysis.     

Seeing a World in a Grain of Sand: Science Teaching in Multicultural Context

This paper briefly describes two unusual curriculum plans: the Imagining Nature Project at Deakin University in Geelong, Victoria, Australia and the Native Eyes Project at the Institute of American Indian Art in Santa Fe, New Mexico Among other things, both projects entail the teaching of science and technology studies to non-science majors of highly diverse cultural origin. Both projects also incorporate innovative strategies designed to make science and technology more credible and relevant to indigenous people.     

'Goslob is a Boy's Name'

This class-based case study explores how firmly established are primary school children's gender expectations and how far a primary school environment serves to reinforce or challenge their expectations. Children of differing ages responded to a specially written story framework. Their responses indicated a gender stereotyping which influenced interpretation. Implications for teaching are discussed.     

Teacher training in early childhood education: The case of Ghana,West Africa

Abstract

Teacher training in early childhood education in Ghana, West Africa is more of a grassroots effort rather than a formal system that is fully supported financially by the Ministry of Education. Formal teacher‐training college or university‐based early childhood teacher training has yet to be realized for the thousands of teachers of children 3–5 years old in government or government‐supported primary schools. This work chronicles the past and present teacher‐training programs available in this country that reports approximately 4.3 million children in its population under the age of 6 years.     

Action Learning Circles: action learning in theory and practice

ABSTRACT

This paper is a commentary on how action learning circles can be effectively used (to offer experiential and emancipatory learning for students. The focus is on the preparation of students for health care education, and its value in the context of professional client‐based teaching and learning. The concept of action learning is described, and its role in promoting learning from practice explored using student and teacher evaluation evidence. An outline of the use of action learning circles in practice and the subsequent learning is analysed using evaluation data to inform our discussion, which gives the perspective of both learner and teacher.     

Family-based care buffers the stress sensitizing effect of early deprivation on executive functioning difficulties in adolescence

We examined whether family care following early-life deprivation buffered the association between stressful life events (SLEs) and executive functioning (EF) in adolescence. In early childhood, 136 institutionally reared children were randomly assigned to foster care or care-as-usual; 72 never-institutionalized children served as a comparison group. At age 16 years, adolescents (n = 143; 54% female; 67.1% Romanian) self-reported recent SLEs, completed a battery of memory and EF tasks, and completed a go/nogo task in which mediofrontal theta power (MFTP) was measured using electroencephalogram. More independent SLEs predicted lower EF and more dependent SLEs predicted lower MFTP, but only among adolescents with prolonged early deprivation. Findings provide preliminary evidence that family care following early deprivation may facilitate resilience against stress during adolescence on EF.