Why Reinvent the Wheel-Let's Build Question Answering Systems Together

TitleWhy Reinvent the Wheel-Let's Build Question Answering Systems Together
Publication TypeConference Paper
Year of Publication2018
AuthorsKuldeep Singh, Sethupat, A, Andreas Both, Saeedeh Shekarpour, Lytra, I, Usbeck, R, Vyas, A, Khikmatullaev, A, Punjani, D, Christoph Lange, Vidal, M-E, Jens Lehmann, Sören Auer
Conference NameThe Web Conference (WWW 2018)
Date Published04/2018
Conference LocationLyon, France
KeywordsQA Framework, question answering, Seman-tic Search, Semantic Web, Software Re-usability

Modern question answering (QA) systems need to flexibly integrate a number of components specialised to fulfil specific tasks in a QA pipeline. Key QA tasks include Named Entity Recognition and Disambiguation, Relation Extraction, and Query Building. Since a number of different software components exist that implement different strategies for each of these tasks, it is a major challenge to select and combine the most suitable components into a QA system, given the characteristics of a question. We study this op-timisation problem and train Classifiers, which take features of a question as input and have the goal of optimising the selection of QA components based on those features. We then devise a greedy algorithm to identify the pipelines that include the suitable components and can effectively answer the given question. We implement this model within Frankenstein a QA framework able to select QA components and compose QA pipelines. We evaluate the effectiveness of the pipelines generated by Frankenstein using the QALD and LC-QuAD benchmarks. These results not only suggest that Frankenstein precisely solves the QA optimisation problem, but also enables the automatic composition of optimised QA pipelines, which outperform the static Baseline QA pipeline. Thanks to this flexible and fully automated pipeline generation process, new QA components can be easily included in Frankenstein thus improving the performance of the generated pipelines.

Full Text

Singh Kuldeep, Sethupat Arun, Both Andreas, Shekarpour Saeedeh, Lytra Ioanna, Usbeck Ricardo, Vyas Akhilesh, Khikmatullaev Akmal, Punjani Dharmen, Lange Christoph, Vidal Maria-Esther, Lehmann Jens, Auer Sören. (2018). Why Reinvent the Wheel-Let's Build Question Answering Systems Together. WWW 2018, Lyon, France