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Passage Reranking Multilingual BERT 🔃 🌍 Model description Input: Supports over 100 Languages. See List of supported languages for all available. Purpose: This module takes a search query [1] and a passage [2] and calculates if the passage matches the query. It can be used as an improvement for Elasticsearch Results and boosts the relevancy by up to 100%. Architecture: On top of BERT there is a Densly Connected NN which takes the 768 Dimensional [CLS] Token as input and provides the output (Arxiv). Output: Just a single value between between -10 and 10. Better matching query,passage pairs tend to have a higher a score. Intended uses & limitations Both query[1] and passage[2] have to fit in 512 Tokens. As you normally want to rerank the first dozens of search results keep in mind the inference time of approximately 300 ms/query. This Model can be used as a drop-in replacement in the Nboost Library Through this you can directly improve your Elasticsearch Results without any coding. Training data This model is trained using the Microsoft MS Marco Dataset. This training dataset contains approximately 400M tuples of a query, relevant and non-relevant passages. All datasets used for training and evaluating are listed in this table. The used dataset for training is called Train Triples Large, while the evaluation was made on Top 1000 Dev. There are 6,900 queries in total in the development dataset, where each query is mapped to top 1,000 passage retrieved using BM25 from MS MARCO corpus. Training procedure The training is performed the same way as stated in this README. See their excellent Paper on Arxiv. We changed the BERT Model from an English only to the default BERT Multilingual uncased Model from Google. Training was done 400 000 Steps. This equaled 12 hours an a TPU V3-8. Eval results We see nearly similar performance than the English only Model in the English Bing Queries Dataset. Although the training data is English only internal Tests on private data showed a far higher accurancy in German than all other available models. This table is taken from nboost and extended by the first line. Contact Infos Amberoad is a company focussing on Search and Business Intelligence. We provide you: Advanced Internal Company Search Engines thorugh NLP External Search Egnines: Find Competitors, Customers, Suppliers Get in Contact now to benefit from our Expertise: The training and evaluation was performed by Philipp Reissel and Igli Manaj Linkedin | Homepage | Email

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