CCKS 2021 Life Service Domain Knowledge Graph Question Answering Competition
The CCKS 2021 Life Service Domain Knowledge Graph QA competition challenges participants to build Chinese question‑answering systems that retrieve factual answers from a combined OpenKG and Meituan life‑service graph, covering tasks such as entity recognition, relation extraction and semantic parsing, with registration May‑July, cash prizes up to ¥20 000 and internship offers for top student teams.
The competition focuses on natural language question answering over knowledge graphs (KBQA), a core problem in artificial intelligence. It aims to enable ordinary users to query structured knowledge bases without writing SPARQL or other formal query languages.
In academia, methods such as semantic parsing and information retrieval have been explored, while industry applications include smart speakers, voice assistants, and intelligent diagnosis. Meituan provides internal services (merchant IM, intelligent customer service, complex condition search) that rely on knowledge‑graph‑based QA.
At the CCKS 2021 conference, Meituan Search & NLP jointly with Peking University proposed the "Life Service Domain Knowledge Graph QA" task, inviting participants to develop innovative KBQA systems that handle both deep, domain‑specific and shallow, open‑domain queries.
Task Description : Given a Chinese question, the system must select one or more entities or attribute values from a provided knowledge base as the answer. Questions are factual and objective. Sub‑tasks may include entity recognition, relation extraction, and semantic parsing. The answer must be sourced from the knowledge base.
The dataset combines the OpenKG base with a new life‑service domain knowledge graph from Meituan (covering tourism, hotels, food, etc.) and retains the previous open‑domain data (PKUBASE) for training.
Registration & Timeline :
Registration opens May 15, 2021 (online platform or email) and closes July 15.
Training/validation data released May 15.
Test data released July 15.
Submission deadline July 18.
Paper submission deadline August 5.
Registration can be done via the platform link CCKS 2021: Life Service Knowledge Graph QA or by emailing the specified address with the required subject and content format.
Rewards :
1st place: ¥20,000
2nd place: ¥10,000
3rd place: ¥5,000
Innovation award: ¥5,000
Top three student teams also receive direct interview opportunities for internships at Meituan.
Discussion : Participants can join the WeChat discussion group by scanning the provided QR code or contacting the biendata assistant.
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Meituan Technology Team
Over 10,000 engineers powering China’s leading lifestyle services e‑commerce platform. Supporting hundreds of millions of consumers, millions of merchants across 2,000+ industries. This is the public channel for the tech teams behind Meituan, Dianping, Meituan Waimai, Meituan Select, and related services.
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