17 research outputs found

    Large expert-curated database for benchmarking document similarity detection in biomedical literature search

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    Document recommendation systems for locating relevant literature have mostly relied on methods developed a decade ago. This is largely due to the lack of a large offline gold-standard benchmark of relevant documents that cover a variety of research fields such that newly developed literature search techniques can be compared, improved and translated into practice. To overcome this bottleneck, we have established the RElevant LIterature SearcH consortium consisting of more than 1500 scientists from 84 countries, who have collectively annotated the relevance of over 180 000 PubMed-listed articles with regard to their respective seed (input) article/s. The majority of annotations were contributed by highly experienced, original authors of the seed articles. The collected data cover 76% of all unique PubMed Medical Subject Headings descriptors. No systematic biases were observed across different experience levels, research fields or time spent on annotations. More importantly, annotations of the same document pairs contributed by different scientists were highly concordant. We further show that the three representative baseline methods used to generate recommended articles for evaluation (Okapi Best Matching 25, Term Frequency-Inverse Document Frequency and PubMed Related Articles) had similar overall performances. Additionally, we found that these methods each tend to produce distinct collections of recommended articles, suggesting that a hybrid method may be required to completely capture all relevant articles. The established database server located at https://relishdb.ict.griffith.edu.au is freely available for the downloading of annotation data and the blind testing of new methods. We expect that this benchmark will be useful for stimulating the development of new powerful techniques for title and title/abstract-based search engines for relevant articles in biomedical research.Peer reviewe

    Características fisicoquímicas e citológicas do líquido sinovial da articulação temporomandibular em eqüinos Physical, biochemical and cytological characteristics of the equine temporomandibular joint synovial fluid

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    Foram estudadas as características fisicoquímicas e citológicas do líquido sinovial da articulação temporomandibular de dez eqüinos hígidos. Verificou-se que o líquido é viscoso, amarelo claro a citrino, límpido e livre de partículas à temperatura ambiente. Houve contaminação da amostra por sangue em três amostras que se apresentaram amarelo avermelhadas a vermelhas e de aspecto turvo. A taxa de glicose variou entre 100 e 250 e a concentração protéica não ultrapassou 3,8g/dL. O número médio de células nucleadas foi de 417 células/µL, com predominância de grandes células mononucleares e linfócitos. As mensurações das características pesquisadas no líquido sinovial da articulação temporomandibular de eqüinos são de execução simples e passíveis de implantação na rotina de atendimentos clínico-cirúrgicos.<br>Physical, biochemical and cytological characteristics of the temporomandibular joint synovial fluid were studied in ten clinically normal horses. It is a viscous, pale yellow, clear fluid and without flocculent material at room temperature. There was blood contamination in three samples, they presented red-yellow to red and cloudy. The range of glucose levels were 100 to 250 and its protein concentration was up to 3,8g/dL. Nucleated cells mean number was 417 cells/µL, with predominating large mononuclear cells and lymphocytes. Equine temporomandibular synovial fluids can be easily evaluated, being feasible in clinical and surgical routine, and the information may be useful to the diagnosis, treatment and prognosis of animals with temporomandibular alterations
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