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Book ChapterDOI

Towards Cross Language Morphologic Negation Identification in Electronic Health Records

TLDR
An approach for analyzing the Electronic Health Records (EHRs) with the goal of automatically identifying morphologic negation such that swapping the truth values of concepts introduced by negation does not interfere with understanding the medical discourse is presented.
Abstract
The current paper presents an approach for analyzing the Electronic Health Records (EHRs) with the goal of automatically identifying morphologic negation such that swapping the truth values of concepts introduced by negation does not interfere with understanding the medical discourse. To identify morphologic negation we propose the RoPreNex strategy that represents the adaptation of our PreNex approach to the Romanian language [1]. We evaluate our proposed solution on the MTsamples [2] dataset. The results we obtained are promising and ensure a reliable negation identification approach in medical documents. We report precision of 92.62 % and recall of 93.60 % in case of the morphologic negation identification for the source language and an overall performance in the morphologic negation identification of 77.78 % precision and 80.77 % recall in case of the target language.

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Citations
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Journal ArticleDOI

Feature Engineered Relation Extraction – Medical Documents Setting

TL;DR: This paper aims to define the knowledge flow for a medical assistive decision support system by structuring raw medical data and leveraging the knowledge contained in the data proposing solutions for efficient data search, medical investigation or diagnosis and medication prediction and relationship identification.

Knowledge Extraction and Prediction from Unstructured Medical Documents

TL;DR: This paper covers an original complete solution for automatically structuring medical documents and extracting relevant medical concepts via the PreNex and MedCIM strategies while the vision for the Knowledge Extraction and Prediction solutions is being argued and is under development.
References
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Posted Content

Thumbs Up or Thumbs Down? Semantic Orientation Applied to Unsupervised Classification of Reviews

TL;DR: A simple unsupervised learning algorithm for classifying reviews as recommended (thumbs up) or not recommended (Thumbs down) if the average semantic orientation of its phrases is positive.
Proceedings Article

Thumbs Up or Thumbs Down? Semantic Orientation Applied to Unsupervised Classification of Reviews

Peter, +1 more
TL;DR: This article proposed an unsupervised learning algorithm for classifying reviews as recommended (thumbs up) or not recommended(thumbs down) based on the average semantic orientation of phrases in the review that contain adjectives or adverbs.
Proceedings ArticleDOI

Thumbs Up or Thumbs Down? Semantic Orientation Applied to Unsupervised Classification of Reviews

TL;DR: In this article, an unsupervised learning algorithm for classifying reviews as recommended (thumbs up) or not recommended(thumbs down) is presented. But the classification of a review is predicted by the average semantic orientation of the phrases in the review that contain adjectives or adverbs.
Journal ArticleDOI

A simple algorithm for identifying negated findings and diseases in discharge summaries

TL;DR: It is concluded that with little implementation effort a simple regular expression algorithm for determining whether a finding or disease mentioned within narrative medical reports is present or absent can identify a large portion of the pertinent negatives from discharge summaries.
Proceedings ArticleDOI

Learning extraction patterns for subjective expressions

TL;DR: A bootstrapping process that learns linguistically rich extraction patterns for subjective (opinionated) expressions while maintaining high precision is presented.
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