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This repository contains the results of a secondary study conducted about the Open Information Extraction approaches (OpenIE).

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CSM-Research/03-SLR-uNLPeROpenIE

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Using Open Information Extraction to Extract Relations: An Extended Systematic Mapping

In this repository you will find the results of the systematic mapping related to the use of OpenIE.

Abstract

Context: for thousands of years humans translate their knowledge using natural language format and register it so that others can access them. Natural Language Processing (NLP) is a subarea of Artificial Intelligence (AI) that studies the linguistic phenomena and uses computational methods to process natural language written texts. More specific areas such as Open Information Extraction (Open IE) were created to perform the information extraction in textual databases, such as relationship triples, without prior information of its context or structure. Recently, research was conducted by grouping studies related to Open IE initiatives. However, some information about this domain can still be explored.

Objective: this work aims to identify in literature the main characteristics that involve the Open IE approaches.

Method: in order to achieve the proposed objective, first we conducted the update of a mapping study, and then, we performed backward snowballing and manual search to find publications of researchers and research groups that accomplished these studies. In addition, we also considered a specialized electronic database in NLP.

Results: the study resulted in a set of 159 studies proposing Open IE approaches. Data analysis showed a migration from the use of supervised techniques to neural techniques. The study also showed that the most commonly used data sets are Journalistic News. Moreover, the preferred techniques for evaluating approaches are precision and recall.

Conclusion: many Open IE approaches have been published and community interest is growing in this topic. The advance of the area of AI and neural networks allowed this technique to be used to extract relevant information from texts that can be used later by other areas.

Links

This paper was published in CLEI 2021 (https://clei2021.cr/home) and it is available in proceedings. Check out: -- soon --

License

This results are copyrighted and is available in IEEE Xplore digital library. Make sure that you read and undertand all the terms and respect the copyright implications.

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