ntcir resource description

resources/ntcir.md

+---
+layout: page
+title: NTCIR Math Information Retrieval
+---
+
+[NTCIR](http://research.nii.ac.jp/ntcir/index-en.html) 10, 11 and 12 had tasks concerning
+mathematical information retrieval.
+These tasks primarily focused on keyword search.
+The corpus was based on arXiv/arXMLiv and Wikipedia.
+A more detailed description of the NTCIR mathematical information retrieval
+tasks and the lessons learnt was published at [https://doi.org/10.1007/978-981-15-5554-1_12](https://doi.org/10.1007/978-981-15-5554-1_12).
+
+
+### Access and Download
+Like for the arXMLiv corpus, access is currently restricted to
+[SIGMathLing members](/member/) but everyone is welcome to join (after signing the [SIGMathLing Non-Disclosure-Agreement](/nda/)).
+
+If you are a member, you should have access to the two repositories containing the data:
+* [https://gl.kwarc.info/SIGMathLing/ntcir10-math-understanding](https://gl.kwarc.info/SIGMathLing/ntcir10-math-understanding)
+    for NTCIR-10
+* [https://gl.kwarc.info/SIGMathLing/ntcir-11/](https://gl.kwarc.info/SIGMathLing/ntcir-11/)
+    for NTCIR-11 and NTCIR-12 (presumably, you will mostly be interested in the contents of `NTCIR/ntcir-math.nii.ac.jp/download`)
+