For a web page , is the set of webpages pointing to it while is the set of vertices points to. The rank of is defined as:. In the case of text, the connections can be weighted so we introduce which is the weight of the edge between entity and. The weighed rank of now becomes:. We have the choice of using words, collocations, or even sentences as vertices of our graph. The same goes for the connection between the vertices. For keyword extraction we want to identify a subset of terms that best describe the text.
We follow these steps:.
Totally laparoscopic resection of the splenic flexure for tumor
Instead of extracting words, we extract sentences that are the most representative of the body of text using these steps:. Note that version 1. This Jupyter notebook shows us how to use pytextrank.
In his implementation the author choses to use iterators and write the intermediate results to json files, which can slow things down due to the IO overhead. I have forked the pytextrank repository and modified the functions in order to avoid writing intermediate results to json files.
Open House - Veterinary Medicine at Illinois
Written this way, we get the TextRank results faster as intermediary results do not have to be written into json files. Using the original implementation with intermediary files:. TextRank is unsupervised and does not depend on language.
As such the algorithm can be used for other languages. We would need a syntactic filter in our language of choice if we choose to filter out verbs. The output from TextRank can be used to summarize the text or as machine learning features. We take a look at sample paper abstracts from Semantic Scholar. Data is also available in this folder with the file name sample-S2-records.
- And Let the Earth Tremble at Its Centers (Texas Pan American Literature in Translation);
- Making a Difference: A Comparative View of the Role of the Internet in Election Politics (Lexington Studies in Political Communication);
- Open House.
We look at keywords and not the representative sentences since an abstract is already a summary of the paper. Complete results are in this folder. This is the result for one abstract:.
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A year-old male suffering from sudden right lower abdominal pain and lumbago was referred to our hospital. Enhanced computed tomography demonstrated bilateral kidneys and spleen infarctions, and a large tumour was found occupying the aortic arch and thoracic descending aorta.
We suspected that these infarctions were due to tumour embolization. The aortic arch and thoracic descending aorta were resected with the tumour and then reconstructed using the L-incision technique. A microscopic examination revealed the presence of an intimal sarcoma.
The patient was treated with adjuvant chemotherapy and showed a good postoperative course. To Kill, and Kill Again 1.
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