Synonym extraction and abbreviation expansion with ensembles of
Por um escritor misterioso
Last updated 03 julho 2024
![Synonym extraction and abbreviation expansion with ensembles of](https://media.springernature.com/m685/springer-static/image/art%3A10.1186%2F2041-1480-5-6/MediaObjects/13326_2013_Article_157_Fig1_HTML.jpg)
Background Terminologies that account for variation in language use by linking synonyms and abbreviations to their corresponding concept are important enablers of high-quality information extraction from medical texts. Due to the use of specialized sub-languages in the medical domain, manual construction of semantic resources that accurately reflect language use is both costly and challenging, often resulting in low coverage. Although models of distributional semantics applied to large corpora provide a potential means of supporting development of such resources, their ability to isolate synonymy from other semantic relations is limited. Their application in the clinical domain has also only recently begun to be explored. Combining distributional models and applying them to different types of corpora may lead to enhanced performance on the tasks of automatically extracting synonyms and abbreviation-expansion pairs. Results A combination of two distributional models – Random Indexing and Random Permutation – employed in conjunction with a single corpus outperforms using either of the models in isolation. Furthermore, combining semantic spaces induced from different types of corpora – a corpus of clinical text and a corpus of medical journal articles – further improves results, outperforming a combination of semantic spaces induced from a single source, as well as a single semantic space induced from the conjoint corpus. A combination strategy that simply sums the cosine similarity scores of candidate terms is generally the most profitable out of the ones explored. Finally, applying simple post-processing filtering rules yields substantial performance gains on the tasks of extracting abbreviation-expansion pairs, but not synonyms. The best results, measured as recall in a list of ten candidate terms, for the three tasks are: 0.39 for abbreviations to long forms, 0.33 for long forms to abbreviations, and 0.47 for synonyms. Conclusions This study demonstrates that ensembles of semantic spaces can yield improved performance on the tasks of automatically extracting synonyms and abbreviation-expansion pairs. This notion, which merits further exploration, allows different distributional models – with different model parameters – and different types of corpora to be combined, potentially allowing enhanced performance to be obtained on a wide range of natural language processing tasks.
![Synonym extraction and abbreviation expansion with ensembles of](https://www.researchgate.net/publication/260116530/figure/tbl5/AS:669617877950477@1536660751369/Disjoint-corpus-ensemble-results-on-clinical-medical-development-set.png)
Disjoint corpus ensemble results on clinical + medical development
![Synonym extraction and abbreviation expansion with ensembles of](https://ars.els-cdn.com/content/image/1-s2.0-S0167739X18326529-gr7.jpg)
Language model-based automatic prefix abbreviation expansion
![Synonym extraction and abbreviation expansion with ensembles of](https://www.researchgate.net/profile/Laurianne-Sitbon/publication/271061867/figure/fig2/AS:295038564225031@1447354083851/TOEFL-performance-for-the-Tensor-Encoding-BEAGLE-and-permuted-RI-model.png)
TOEFL performance for the Tensor Encoding, BEAGLE and permuted RI
![Synonym extraction and abbreviation expansion with ensembles of](https://ars.els-cdn.com/content/image/1-s2.0-S1532046418300972-fx1.jpg)
Extracting similar terms from multiple EMR-based semantic
![Synonym extraction and abbreviation expansion with ensembles of](https://www.researchgate.net/profile/Hans-Moen/publication/260116530/figure/tbl2/AS:669617877966858@1536660751289/Reference-standards-statistics_Q320.jpg)
PDF) Synonym extraction and abbreviation expansion with ensembles
![Synonym extraction and abbreviation expansion with ensembles of](https://journals.sagepub.com/cms/10.1177/0165551518799640/asset/images/large/10.1177_0165551518799640-fig1.jpeg)
Automatically refining synonym extraction results: Cleaning and
![Synonym extraction and abbreviation expansion with ensembles of](https://media.springernature.com/m685/springer-static/image/art%3A10.1186%2Fs12911-021-01554-2/MediaObjects/12911_2021_1554_Fig2_HTML.png)
Using NLP in openEHR archetypes retrieval to promote
![Synonym extraction and abbreviation expansion with ensembles of](https://www.powerthesaurus.org/_images/terms/extraction-synonyms-2.png)
Extraction synonyms - 1 036 Words and Phrases for Extraction
![Synonym extraction and abbreviation expansion with ensembles of](https://journals.sagepub.com/cms/10.1177/0165551518799640/asset/images/large/10.1177_0165551518799640-fig2.jpeg)
Automatically refining synonym extraction results: Cleaning and
![Synonym extraction and abbreviation expansion with ensembles of](https://ars.els-cdn.com/content/image/1-s2.0-S0167739X18326529-gr2.jpg)
Language model-based automatic prefix abbreviation expansion
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