Santosh Srivastava
2022
SYGMA: A System for Generalizable and Modular Question Answering Over Knowledge Bases
Sumit Neelam
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Udit Sharma
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Hima Karanam
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Shajith Ikbal
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Pavan Kapanipathi
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Ibrahim Abdelaziz
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Nandana Mihindukulasooriya
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Young-Suk Lee
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Santosh Srivastava
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Cezar Pendus
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Saswati Dana
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Dinesh Garg
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Achille Fokoue
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G P Shrivatsa Bhargav
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Dinesh Khandelwal
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Srinivas Ravishankar
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Sairam Gurajada
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Maria Chang
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Rosario Uceda-Sosa
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Salim Roukos
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Alexander Gray
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Guilherme Lima
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Ryan Riegel
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Francois Luus
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L V Subramaniam
Findings of the Association for Computational Linguistics: EMNLP 2022
Knowledge Base Question Answering (KBQA) involving complex reasoning is emerging as an important research direction. However, most KBQA systems struggle with generalizability, particularly on two dimensions: (a) across multiple knowledge bases, where existing KBQA approaches are typically tuned to a single knowledge base, and (b) across multiple reasoning types, where majority of datasets and systems have primarily focused on multi-hop reasoning. In this paper, we present SYGMA, a modular KBQA approach developed with goal of generalization across multiple knowledge bases and multiple reasoning types. To facilitate this, SYGMA is designed as two high level modules: 1) KB-agnostic question understanding module that remain common across KBs, and generates logic representation of the question with high level reasoning constructs that are extensible, and 2) KB-specific question mapping and answering module to address the KB-specific aspects of the answer extraction. We evaluated SYGMA on multiple datasets belonging to distinct knowledge bases (DBpedia and Wikidata) and distinct reasoning types (multi-hop and temporal). State-of-the-art or competitive performances achieved on those datasets demonstrate its generalization capability.
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Co-authors
- Sumit Neelam 1
- Udit Sharma 1
- Hima Karanam 1
- Shajith Ikbal 1
- Pavan Kapanipathi 1
- show all...
- Ibrahim Abdelaziz 1
- Nandana Mihindukulasooriya 1
- Young-Suk Lee 1
- Cezar Pendus 1
- Saswati Dana 1
- Dinesh Garg 1
- Achille Fokoue-Nkoutche 1
- G P Shrivatsa Bhargav 1
- Dinesh Khandelwal 1
- Srinivas Ravishankar 1
- Sairam Gurajada 1
- Maria Chang 1
- Rosario Uceda-Sosa 1
- Salim Roukos 1
- Alexander Gray 1
- Guilherme Lima 1
- Ryan Riegel 1
- Francois Luus 1
- L V Subramaniam 1