Relation extraction for colorectal cancer via deep learning with entity-aware feature orthogonal decomposition

Relation extraction is significant for text structuring of colorectal cancer (CRC) pathological reports to facilitate doctors’ disease diagnoses. Although many relation extraction methods have been extensively studied for various natural language processing applications, they cannot be well transfer...

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Vydané v:Expert systems with applications Ročník 258; s. 125188
Hlavní autori: Luo, Zhihao, Feng, Jianjun, Cai, Nian, Wang, Xiaodan, Liao, Jiacheng, Li, Quanqing, Peng, Fuqiang, Chen, Chuanwen
Médium: Journal Article
Jazyk:English
Vydavateľské údaje: Elsevier Ltd 15.12.2024
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Abstract Relation extraction is significant for text structuring of colorectal cancer (CRC) pathological reports to facilitate doctors’ disease diagnoses. Although many relation extraction methods have been extensively studied for various natural language processing applications, they cannot be well transferred to be applied for CRC pathological reports since CRC pathological reports have some unique characteristics. To this end, a deep learning framework is designed in this paper to extract entity relations in CRC pathological reports, which is based on an encoder–decoder architecture with entity-aware feature orthogonal decomposition. Specifically, to effectively extract semantic features of long and short entities, a two-stream encoder is designed based on an edge-aware convolutional neural network and a dimension-aware dilated convolution residual network. To alleviate the influence of the blending of subject–object features, entity-aware feature orthogonal decomposition is designed to decompose the extracted semantic features into three types, i.e. subject features, object features and subject–object shared features. A stage-wise cross entropy loss is proposed to well train the network. Comparison experiments indicated that our designed network performs well on CRC pathological texts with the performance of 92.3% F1 score, 93.1% Precision, and 91.5% Recall, outperforming the existing relation extraction models. [Display omitted] •Joint relation extraction for CRC pathological reports via deep learning.•Edge-aware CNNs and dimension-aware DCRN for extracting entity features.•Entity-aware feature orthogonal decomposition for decomposing entity features.•Stage-wise cross-entropy loss is proposed to well ensure the network training.•Perform well on real CRC pathological reports with the 92.3% F1 score.
AbstractList Relation extraction is significant for text structuring of colorectal cancer (CRC) pathological reports to facilitate doctors’ disease diagnoses. Although many relation extraction methods have been extensively studied for various natural language processing applications, they cannot be well transferred to be applied for CRC pathological reports since CRC pathological reports have some unique characteristics. To this end, a deep learning framework is designed in this paper to extract entity relations in CRC pathological reports, which is based on an encoder–decoder architecture with entity-aware feature orthogonal decomposition. Specifically, to effectively extract semantic features of long and short entities, a two-stream encoder is designed based on an edge-aware convolutional neural network and a dimension-aware dilated convolution residual network. To alleviate the influence of the blending of subject–object features, entity-aware feature orthogonal decomposition is designed to decompose the extracted semantic features into three types, i.e. subject features, object features and subject–object shared features. A stage-wise cross entropy loss is proposed to well train the network. Comparison experiments indicated that our designed network performs well on CRC pathological texts with the performance of 92.3% F1 score, 93.1% Precision, and 91.5% Recall, outperforming the existing relation extraction models. [Display omitted] •Joint relation extraction for CRC pathological reports via deep learning.•Edge-aware CNNs and dimension-aware DCRN for extracting entity features.•Entity-aware feature orthogonal decomposition for decomposing entity features.•Stage-wise cross-entropy loss is proposed to well ensure the network training.•Perform well on real CRC pathological reports with the 92.3% F1 score.
ArticleNumber 125188
Author Cai, Nian
Chen, Chuanwen
Feng, Jianjun
Peng, Fuqiang
Wang, Xiaodan
Luo, Zhihao
Li, Quanqing
Liao, Jiacheng
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Keywords Relation extraction
Feature orthogonal decomposition
Two-stream feature extraction
Pathological reports
Stage-wise cross entropy
Colorectal cancer
Language English
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Snippet Relation extraction is significant for text structuring of colorectal cancer (CRC) pathological reports to facilitate doctors’ disease diagnoses. Although many...
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StartPage 125188
SubjectTerms Colorectal cancer
Feature orthogonal decomposition
Pathological reports
Relation extraction
Stage-wise cross entropy
Two-stream feature extraction
Title Relation extraction for colorectal cancer via deep learning with entity-aware feature orthogonal decomposition
URI https://dx.doi.org/10.1016/j.eswa.2024.125188
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