{"id":"https://openalex.org/W2037530814","doi":"https://doi.org/10.1145/2556325.2567864","title":"A system for sending the right hint at the right time","display_name":"A system for sending the right hint at the right time","publication_year":2014,"publication_date":"2014-02-25","ids":{"openalex":"https://openalex.org/W2037530814","doi":"https://doi.org/10.1145/2556325.2567864","mag":"2037530814"},"language":"en","primary_location":{"id":"doi:10.1145/2556325.2567864","is_oa":false,"landing_page_url":"https://doi.org/10.1145/2556325.2567864","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the first ACM conference on Learning @ scale conference","raw_type":"proceedings-article"},"type":"article","indexed_in":["crossref"],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5068066085","display_name":"Matthew Elkherj","orcid":null},"institutions":[{"id":"https://openalex.org/I36258959","display_name":"University of California San Diego","ror":"https://ror.org/0168r3w48","country_code":"US","type":"education","lineage":["https://openalex.org/I36258959"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Matthew Elkherj","raw_affiliation_strings":["UCSD, La Jolla, USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"UCSD, La Jolla, USA","institution_ids":["https://openalex.org/I36258959"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5072341135","display_name":"Yoav Freund","orcid":"https://orcid.org/0000-0002-3850-6184"},"institutions":[{"id":"https://openalex.org/I36258959","display_name":"University of California San Diego","ror":"https://ror.org/0168r3w48","country_code":"US","type":"education","lineage":["https://openalex.org/I36258959"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Yoav Freund","raw_affiliation_strings":["UCSD, La Jolla, USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"UCSD, La Jolla, USA","institution_ids":["https://openalex.org/I36258959"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":2,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":4.4345,"has_fulltext":false,"cited_by_count":5,"citation_normalized_percentile":{"value":0.94752622,"is_in_top_1_percent":false,"is_in_top_10_percent":true},"cited_by_percentile_year":{"min":89,"max":94},"biblio":{"volume":null,"issue":null,"first_page":"219","last_page":"220"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10162","display_name":"Online and Blended Learning","score":0.8910999894142151,"subfield":{"id":"https://openalex.org/subfields/3304","display_name":"Education"},"field":{"id":"https://openalex.org/fields/33","display_name":"Social Sciences"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},"topics":[{"id":"https://openalex.org/T10162","display_name":"Online and Blended Learning","score":0.8910999894142151,"subfield":{"id":"https://openalex.org/subfields/3304","display_name":"Education"},"field":{"id":"https://openalex.org/fields/33","display_name":"Social Sciences"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},{"id":"https://openalex.org/T11902","display_name":"Intelligent Tutoring Systems and Adaptive Learning","score":0.8697999715805054,"subfield":{"id":"https://openalex.org/subfields/1702","display_name":"Artificial Intelligence"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T11283","display_name":"Experimental Learning in Engineering","score":0.8273000121116638,"subfield":{"id":"https://openalex.org/subfields/2214","display_name":"Media Technology"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.6425840258598328},{"id":"https://openalex.org/keywords/computer-security","display_name":"Computer security","score":0.4583837389945984},{"id":"https://openalex.org/keywords/real-time-computing","display_name":"Real-time computing","score":0.37051939964294434}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.6425840258598328},{"id":"https://openalex.org/C38652104","wikidata":"https://www.wikidata.org/wiki/Q3510521","display_name":"Computer security","level":1,"score":0.4583837389945984},{"id":"https://openalex.org/C79403827","wikidata":"https://www.wikidata.org/wiki/Q3988","display_name":"Real-time computing","level":1,"score":0.37051939964294434}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1145/2556325.2567864","is_oa":false,"landing_page_url":"https://doi.org/10.1145/2556325.2567864","pdf_url":null,"source":null,"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Proceedings of the first ACM conference on Learning @ scale conference","raw_type":"proceedings-article"}],"best_oa_location":null,"sustainable_development_goals":[{"display_name":"Quality Education","score":0.41999998688697815,"id":"https://metadata.un.org/sdg/4"}],"awards":[],"funders":[{"id":"https://openalex.org/F4320306076","display_name":"National Science Foundation","ror":"https://ror.org/021nxhr62"}],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":0,"referenced_works":[],"related_works":["https://openalex.org/W2748952813","https://openalex.org/W2390279801","https://openalex.org/W2358668433","https://openalex.org/W2376932109","https://openalex.org/W2001405890","https://openalex.org/W2382290278","https://openalex.org/W2478288626","https://openalex.org/W4391913857","https://openalex.org/W2350741829","https://openalex.org/W2530322880"],"abstract_inverted_index":{"Hints":[0],"are":[1,13,23,28],"sometimes":[2],"used":[3],"in":[4,17],"online":[5],"learning":[6],"system":[7],"to":[8],"help":[9],"students":[10],"when":[11],"they":[12],"having":[14],"difficulties.":[15],"However,":[16],"all":[18],"of":[19,31,51],"the":[20,26,38,41,49,52],"systems":[21],"we":[22],"aware":[24],"of,":[25],"hints":[27],"fixed":[29],"ahead":[30],"time":[32],"and":[33],"do":[34],"not":[35],"depend":[36],"on":[37],"unsuccessful":[39],"attempts":[40],"student":[42],"has":[43],"already":[44],"made.":[45],"This":[46],"severely":[47],"limits":[48],"effectiveness":[50],"hints.":[53]},"counts_by_year":[{"year":2023,"cited_by_count":1},{"year":2020,"cited_by_count":1},{"year":2017,"cited_by_count":1},{"year":2016,"cited_by_count":1},{"year":2015,"cited_by_count":1}],"updated_date":"2026-06-11T09:08:48.828518","created_date":"2025-10-10T00:00:00"}