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* __open data portal__: a better open data portal, featuring data fusion, retrieval, ranking, summarization, recommendation, etc. ([TKDE 2023|https://doi.org/10.1109/TKDE.2021.3095309], [SIGIR 2022|https://doi.org/10.1145/3477495.3531729]);
* __knowledge graph search__: search algorithms for large knowledge graphs, e.g., efficient approximation algorithms for Steiner Tree problems (WWW 2023, [WWW 2021|https://doi.org/10.1145/3442381.3449900]);
* __complex question answering__: neuro-symbolic methods for question answering with applications to complex tasks such as problem solving ([AAAI 2023|https://doi.org/10.48550/arXiv.2211.12668], [ACL 2022|https://doi.org/10.18653/v1/2022.acl-long.494]).
* __open data portal__: a better open data portal, featuring data fusion, retrieval, ranking, summarization, recommendation, etc.; [[ [TKDE 2023|https://doi.org/10.1109/TKDE.2021.3095309], [SIGIR 2022|https://doi.org/10.1145/3477495.3531729], [ISWC 2021|https://doi.org/10.1007/978-3-030-88361-4_1] ]
* __knowledge graph search__: search algorithms for large knowledge graphs, e.g., efficient approximation algorithms for Steiner Tree problems; [[ WWW 2023, [WWW 2021|https://doi.org/10.1145/3442381.3449900], [IJCAI 2021|https://doi.org/10.24963/ijcai.2021/215] ]
* __complex question answering__: neuro-symbolic methods for question answering with applications to complex tasks such as problem solving. [[ [AAAI 2023|https://doi.org/10.48550/arXiv.2211.12668], [ACL 2022|https://doi.org/10.18653/v1/2022.acl-long.494], [AAAI 2021|https://ojs.aaai.org/index.php/AAAI/article/view/17570]]
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