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Learning-to-Rank and Relevance Feedback for Literature Appraisal in Empirical Medicine

  • Athanasios Lagopoulos
  • Antonios Anagnostou
  • Adamantios Minas
  • Grigorios Tsoumakas
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 11018)

Abstract

The constantly expanding medical libraries contain immense amounts of information, including evidence from healthcare research. Gathering and interpreting this evidence can be both challenging and time-consuming for researchers conducting systematic reviews. Technologically assisted review (TAR) aims to assist this process by finding as much relevant information as possible with the least effort. Toward this, we present an incremental learning method that ranks documents, previously retrieved, by automating the process of title and abstract screening. Our approach combines a learning-to-rank model trained across multiple reviews with a model focused on the given review, incrementally trained based on relevance feedback. The classifiers use as features several similarity metrics between the documents and the research topic, such as Levenshtein distance, cosine similarity and BM25, and vectors derived from word embedding methods such as Word2Vec and Doc2Vec. We test our approach using the dataset provided by the Task II of CLEF eHealth 2017 and we empirically compare it with other approaches participated in the task.

Keywords

Learning to rank Relevance feedback Technology-assisted reviews Empirical Medicine 

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Copyright information

© Springer Nature Switzerland AG 2018

Authors and Affiliations

  1. 1.Aristotle University of ThessalonikiThessalonikiGreece

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