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Register a new userTerm Selection for Query Expansion in Medical Cross-lingual Information Retrieval
اختيار الكلمات لتوسيع الاستعلامات في نظم استرجاع المعلومات الطبية متعددة اللغات
1979
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Added by
Springer ورقة بحثية
Publication date
2019
fields
Informatics Engineering
and research's language is
العربية
Created by
Shadi Saleh
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نعرض في هذا البحث مودل لتوسيع الاستعلامات التلقائية في نظم استرجاع المعلومات متعددة اللغات في المجال الطبي. يوظف المودل المستخدم ترجمة آلية للاستعلام في اللغة المصدر الى لغة المستندات وتابع انحدار خطي لتوقّع دقة الاسترجاع لكل استعلام مترجم عند توسيع هذا الاستعلام مع كلمة مرشحة. الكلمات المرشحة (في لغة المستندات) اختيرت من مصادر متعددة: الترجمات المقترحة للاستعلام التي تم الحصول عليها من نظام ترجمة آلي, مقالات ويكيبيديا, وملخصات PubMed. توسيع الاستعلام يُطبق فقط عندما يتوقّع المودل قيمة للكلمة المرشحة تتجاوز عتبة تم تدريبها مسبقا ليسمح ذلك لتوسيع الاستعلامات فقط بالكلمات المرتبطة بقوّة به. اختباراتنا تم تنفيذها على بيانات الاختبار الخاصة ب CLEF eHealth 2013-2015 وأظهرت تفوق ملحوظ في نظم استرجاع المعلومات متعددة اللغات واحادية اللغة.
We present a method for automatic query expansion for cross-lingual information retrieval in the medical domain. The method employs machine translation of source-language queries into a document language and linear regression to predict the retrieval performance for each translated query when expanded with a candidate term. Candidate terms (in the document language) come from multiple sources: query translation hypotheses obtained from the machine translation system, Wikipedia articles and PubMed abstracts. Query expansion is applied only when the model predicts a score for a candidate term that exceeds a tuned threshold which allows to expand queries with strongly related terms only. Our experiments are conducted using the CLEF eHealth 2013--2015 test collection and show %seven source languages and also in the monolingual case. The results show significant improvements in both cross-lingual and monolingual settings.
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