ADMRG @ MediaEval 2013 Social Event Detection

This paper elaborates the approach used by the Applied Data Mining Research Group (ADMRG) for the Social Event Detection (SED) Tasks of the 2013 MediaEval Benchmark. We extended the constrained clustering algorithm to apply to the first semi-supervised clustering task, and we compared several classifiers with Latent Dirichlet Allocation as feature selector in the second event classification task. The proposed approach focuses on scalability and efficient memory allocation when applied to a high dimensional data with large clusters. Results of the first task show the effectiveness of the proposed method. Results from task 2 indicate that attention on the imbalance categories distributions is needed.

Social event detection at MediaEval 2013 : challenges, datasets and evaluation

In this paper, we provide an overview of the Social Event Detection (SED) task that is part of the MediaEval Bench mark for Multimedia Evaluation 2013. This task requires participants to discover social events and organize the re- lated media items in event-specific clusters within a collection of Web multimedia. Social events are events that are planned by people, attended by people and for which the social multimedia are also captured by people. We describe the challenges, datasets, and the evaluation methodology.

The ranking based constrained document clustering method and its application to social event detection

With the growing size and variety of social media files on the web, it’s becoming critical to efficiently organize them into clusters for further processing. This paper presents a novel scalable constrained document clustering method that harnesses the power of search engines capable of dealing with large text data. Instead of calculating distance between the documents and all of the clusters’ centroids, a neighborhood of best cluster candidates is chosen using a document ranking scheme. To make the method faster and less memory dependable, the in-memory and in-database processing are combined in a semi-incremental manner. This method has been extensively tested in the social event detection application. Empirical analysis shows that the proposed method is efficient both in computation and memory usage while producing notable accuracy.

Ranking based clustering for social event detection

The problem of clustering a large document collection is not only challenged by the number of documents and the number of dimensions, but it is also affected by the number and sizes of the clusters. Traditional clustering methods fail to scale when they need to generate a large number of clusters. Furthermore, when the clusters size in the solution is heterogeneous, i.e. some of the clusters are large in size, the similarity measures tend to degrade. A ranking based clustering method is proposed to deal with these issues in the context of the Social Event Detection task. Ranking scores are used to select a small number of most relevant clusters in order to compare and place a document. Additionally,instead of conventional cluster centroids, cluster patches are proposed to represent clusters, that are hubs-like set of documents. Text, temporal, spatial and visual content information collected from the social event images is utilized in calculating similarity. Results show that these strategies allow us to have a balance between performance and accuracy of the clustering solution gained by the clustering method.

SAIVT-ADMRG @ MediaEval 2014 social event detection

This paper outlines the approach taken by the Speech, Audio, Image and Video Technologies laboratory, and the Applied Data Mining Research Group (SAIVT-ADMRG) in the 2014 MediaEval Social Event Detection (SED) task. We participated in the event based clustering subtask (subtask 1), and focused on investigating the incorporation of image features as another source of data to aid clustering. In particular, we developed a descriptor based around the use of super-pixel segmentation, that allows a low dimensional feature that incorporates both colour and texture information to be extracted and used within the popular bag-of-visual-words (BoVW) approach.

Food Line at a New York Trade School Social Event

This black and white photograph shows a large group of men lining up for dessert at a New York Trade School social event.

Speaker at a New York Trade School Social Event

A speaker is pictured along with other important guests on the dais at a New York Trade School social event. Black and white photograph.

Guests at a New York Trade School Social Event

This photograph features a table of guests at a New York Trade School social event. Photograph is black and white.

A guide to reading in social ethics and allied subjects: lists of books and articles selected and described for the use of general readers

by teachers in Harvard University.

O ensino de procedimentos de política de indexação na perspectiva do conhecimento organizacional: uma proposta de programa para a educação à distância do bibliotecário

A política de indexação deve ser constituída de estratégias que permitam o alcance dos objetivos de recuperação do sistema de informação. O indexador tem a função primordial de compreender o documento ao realizar uma análise conceitual que represente adequadamente seu conteúdo. Utilizando a leitura como evento social/protocolo verbal em grupo, nosso objetivo é contribuir com a literatura sobre política de indexação e apresentar propostas de ensino de política de indexação direcionadas a alunos de graduação e pós-graduação, além de uma experiência de educação à distância com vistas à formação do bibliotecário em serviço. Os resultados obtidos demonstraram que a metodologia pode ser utilizada por sistemas de informação para que se tenha acesso ao conhecimento do indexador. Conclui que o indexador deve ser o alvo de investimento dos sistemas de informação e sugere aos sistemas de informação que a experiência do indexador também seja utilizada como parâmetro para política de indexação.

Reading comprehension in autism spectrum disorders: The role of oral language and social functioning

Reading comprehension is an area of difficulty for many individuals with autism spectrum disorders (ASD). According to the Simple View of Reading, word recognition and oral language are both important determinants of reading comprehension ability. We provide a novel test of this model in 100 adolescents with ASD of varying intellectual ability. Further, we explore whether reading comprehension is additionally influenced by individual differences in social behaviour and social cognition in ASD. Adolescents with ASD aged 14-16 years completed assessments indexing word recognition, oral language, reading comprehension, social behaviour and social cognition. Regression analyses show that both word recognition and oral language explain unique variance in reading comprehension. Further, measures of social behaviour and social cognition predict reading comprehension after controlling for the variance explained by word recognition and oral language. This indicates that word recognition, oral language and social impairments may constrain reading comprehension in ASD.

Delivering trans-national education: Reading at Malaysia

Supporting slides as part of the Janet network end to end performance initiative workshop

A política de indexação na perspectiva do conhecimento organizacional

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Contrato de trabalho temporário do assistente social nos centros de referência de assistência social - CRAS's de Belém/PA e sua repercussão na operacionalização da política de assistência social

Este trabalho tem por objetivo refletir e analisar sobre o contrato de trabalho temporário do assistente social e suas repercussões na operacionalização da Política de Assistência Social nos Centros de Referências de Assistência Social (CRAS) no município de Belém do Pará. Para tal foi realizada uma pesquisa de campo nos referidos CRA's, a qual teve como sujeito os assistentes sociais que possui contrato temporário nesses espaços sócio-ocupacionais nos últimos dois anos. Na pesquisa procurou-se conhecer os determinantes políticos organizacionais dessa forma de trabalho, as condições objetivas e subjetivas do trabalho das mencionadas profissionais e sua relação com as transformações no mundo do trabalho que vêm ocorrendo nos últimos anos. Teve como aporte teórico-metodológico a teoria marxista por entender que a mesma propicia uma leitura crítica da realidade social como todo, não fragmentado-a de maneira desconexa de um contexto político, econômico e social de determinada sociedade. Optou-se como instrumento de coleta de dados o formulário que fora constituído de questões abertas e fechadas. Assim, este estudo está estruturado em três partes, além da introdução e da conclusão. A primeira parte tenta efetuar uma abordagem sobre as transformações que vem ocorrendo no mundo do trabalho nas últimas décadas objetivando desvendar as determinantes dos contratos temporários do assistente social no CRA's do município; a segunda parte trata do neoliberalismo e da reforma do Estado no Brasil; na terceira foi efetuada uma análise sobre as condições do trabalho do assistente social nos CRA's, para então poder entender as repercussões dos contratos de trabalho temporário desses profissionais na operacionalização da Política de Assistência Social. Finalmente, foram efetuadas as considerações gerais sobre o resultado da referida pesquisa de campo.

"Fact versus Fiction – How paratextual information shapes our reading processes"

Our life is full of stories: some of them depict real-life events and were reported, e.g. in the daily news or in autobiographies, whereas other stories, as often presented to us in movies and novels, are fictional. However, we have only little insights in the neurocognitive processes underlying the reading of factual as compared to fictional contents. We investigated the neurocognitive effects of reading short narratives, labeled to be either factual or fictional. Reading in a factual mode engaged an activation pattern suggesting an action-based reconstruction of the events depicted in a story. This process seems to be past-oriented and leads to shorter reaction times at the behavioral level. In contrast, the brain activation patterns corresponding to reading fiction seem to reflect a constructive simulation of what might have happened. This is in line with studies on imagination of possible past or future events.