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NTCIR was the first large-scale IR evaluation conference to construct testcollections with graded relevance assessments: the NTCIR-1 test collectionsfrom 1998 already featured relevant and partially relevant documents. In thispaper, I first describe a few graded-relevance measures that originated fromNTCIR (and a few variants) which are used across different NTCIR tasks. I thenprovide a survey on the use of graded relevance assessments and of gradedrelevance measures in the past NTCIR tasks which primarily tackled rankedretrieval. My survey shows that the majority of the past tasks fully utilisedgraded relevance by means of graded evaluation measures, but not all of them;interestingly, even a few relatively recent tasks chose to adhere to binaryrelevance measures. I conclude this paper by a summary of my survey in tableform, and a brief discussion on what may lie beyond graded relevance.

Graded Relevance Assessments and Graded Relevance Measures of NTCIR: A Survey of the First Twenty Years