J Am Med Inform Assoc - Predicting biomedical document access as a function of past use.

Tópicos

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Resumo

JECTIVE: To determine whether past access to biomedical documents can predict future document access.MATERIALS AND METHODS: The authors used 394 days of query log (August 1, 2009 to August 29, 2010) from PubMed users in the Texas Medical Center, which is the largest medical center in the world. The authors evaluated two document access models based on the work of Anderson and Schooler. The first is based on how frequently a document was accessed. The second is based on both frequency and recency.RESULTS: The model based only on frequency of past access was highly correlated with the empirical data (R?=0.932), whereas the model based on frequency and recency had a much lower correlation (R?=0.668).DISCUSSION: The frequency-only model accurately predicted whether a document will be accessed based on past use. Modeling accesses as a function of frequency requires storing only the number of accesses and the creation date for the document. This model requires low storage overheads and is computationally efficient, making it scalable to large corpora such as MEDLINE.CONCLUSION: It is feasible to accurately model the probability of a document being accessed in the future based on past accesses.

Resumo Limpo

jectiv determin whether past access biomed document can predict futur document accessmateri method author use day queri log august august pubm user texa medic center largest medic center world author evalu two document access model base work anderson schooler first base frequent document access second base frequenc recencyresult model base frequenc past access high correl empir data r wherea model base frequenc recenc much lower correl rdiscuss frequencyon model accur predict whether document will access base past use model access function frequenc requir store number access creation date document model requir low storag overhead comput effici make scalabl larg corpora medlineconclus feasibl accur model probabl document access futur base past access

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