{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,28]],"date-time":"2026-02-28T01:57:13Z","timestamp":1772243833351,"version":"3.50.1"},"reference-count":0,"publisher":"IOS Press","issue":"1-2","license":[{"start":{"date-parts":[[2013,2,1]],"date-time":"2013-02-01T00:00:00Z","timestamp":1359676800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/journals.sagepub.com\/page\/policies\/text-and-data-mining-license"}],"content-domain":{"domain":["journals.sagepub.com"],"crossmark-restriction":true},"short-container-title":["International Journal of Artificial Intelligence in Education"],"published-print":{"date-parts":[[2013,2]]},"DOI":"10.3233\/jai-130029","type":"journal-article","created":{"date-parts":[[2025,8,29]],"date-time":"2025-08-29T17:11:43Z","timestamp":1756487503000},"page":"3-17","update-policy":"https:\/\/doi.org\/10.1177\/sage-journals-update-policy","source":"Crossref","is-referenced-by-count":3,"title":["Experimental Evaluation of Automatic Hint Generation for a Logic Tutor"],"prefix":"10.3233","volume":"22","author":[{"given":"John","family":"Stamper","sequence":"first","affiliation":[{"name":"Human-Computer Interaction Institute, Carnegie Mellon University, Pittsburgh, PA, USA. john@stamper.org"}]},{"given":"Michael","family":"Eagle","sequence":"additional","affiliation":[{"name":"Human-Computer Interaction Institute, Carnegie Mellon University, Pittsburgh, PA, USA. john@stamper.org"}]},{"given":"Tiffany","family":"Barnes","sequence":"additional","affiliation":[{"name":"Human-Computer Interaction Institute, Carnegie Mellon University, Pittsburgh, PA, USA. john@stamper.org"}]},{"given":"Marvin","family":"Croy","sequence":"additional","affiliation":[{"name":"Human-Computer Interaction Institute, Carnegie Mellon University, Pittsburgh, PA, USA. john@stamper.org"}]}],"member":"7437","published-online":{"date-parts":[[2013,2]]},"container-title":["International Journal of Artificial Intelligence in Education"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.3233\/JAI-130029","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/journals.sagepub.com\/doi\/pdf\/10.3233\/JAI-130029","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,8,29]],"date-time":"2025-08-29T17:11:44Z","timestamp":1756487504000},"score":1,"resource":{"primary":{"URL":"https:\/\/journals.sagepub.com\/doi\/10.3233\/JAI-130029"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2013,2]]},"references-count":0,"journal-issue":{"issue":"1-2","published-print":{"date-parts":[[2013,2]]}},"alternative-id":["10.3233\/JAI-130029"],"URL":"https:\/\/doi.org\/10.3233\/jai-130029","relation":{"is-cited-by":[{"id-type":"doi","id":"10.1007\/s40593-016-0131-y","asserted-by":"object"}]},"ISSN":["1560-4292","1560-4306"],"issn-type":[{"value":"1560-4292","type":"print"},{"value":"1560-4306","type":"electronic"}],"subject":[],"published":{"date-parts":[[2013,2]]}}}