{"id":"https://openalex.org/W792809288","doi":null,"title":"Semantic multimedia analysis using knowledge and context","display_name":"Semantic multimedia analysis using knowledge and context","publication_year":2012,"publication_date":"2012-01-01","ids":{"openalex":"https://openalex.org/W792809288","mag":"792809288"},"language":"en","primary_location":{"id":"mag:792809288","doi":null,"is_oa":false,"landing_page_url":"https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.566626","pdf_url":null,"source":null,"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":null},"volume":null,"type":"dissertation","is_traditional":true,"indexed_in":[],"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/A5055841083","display_name":"Spyridon Nikolopoulos","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":true,"raw_author_name":"Spyridon Nikolopoulos","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]}],"institutions":[],"countries_distinct_count":0,"institutions_distinct_count":0,"corresponding_author_ids":["https://openalex.org/A5055841083"],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":null,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":null,"cited_by_percentile_year":null,"biblio":{"volume":null,"issue":null,"first_page":null,"last_page":null},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10824","display_name":"Image Retrieval and Classification Techniques","score":0.8041999936103821,"subfield":{"id":"https://openalex.org/subfields/1707","display_name":"Computer Vision and Pattern Recognition"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T10824","display_name":"Image Retrieval and Classification Techniques","score":0.8041999936103821,"subfield":{"id":"https://openalex.org/subfields/1707","display_name":"Computer Vision and Pattern Recognition"},"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/T11714","display_name":"Multimodal Machine Learning Applications","score":0.05590000003576279,"subfield":{"id":"https://openalex.org/subfields/1707","display_name":"Computer Vision and Pattern Recognition"},"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/T10627","display_name":"Advanced Image and Video Retrieval Techniques","score":0.05550000071525574,"subfield":{"id":"https://openalex.org/subfields/1707","display_name":"Computer Vision and Pattern Recognition"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/bayesian-networks","display_name":"Bayesian networks","score":0.7110000252723694},{"id":"https://openalex.org/keywords/conceptual-space","display_name":"conceptual space","score":0.6880000233650208},{"id":"https://openalex.org/keywords/social-media","display_name":"social media","score":0.7549999952316284},{"id":"https://openalex.org/keywords/aspect-models","display_name":"aspect models","score":0.7179999947547913},{"id":"https://openalex.org/keywords/latent-topics","display_name":"latent topics","score":0.6650000214576721},{"id":"https://openalex.org/keywords/image-tags","display_name":"image tags","score":0.6840000152587891},{"id":"https://openalex.org/keywords/visual-features","display_name":"visual features","score":0.5059999823570251}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.7656351327896118},{"id":"https://openalex.org/C184337299","wikidata":"https://www.wikidata.org/wiki/Q1437428","display_name":"Semantics (computer science)","level":2,"score":0.6148911714553833},{"id":"https://openalex.org/C12713177","wikidata":"https://www.wikidata.org/wiki/Q1900281","display_name":"Perspective (graphical)","level":2,"score":0.5425823330879211},{"id":"https://openalex.org/C177264268","wikidata":"https://www.wikidata.org/wiki/Q1514741","display_name":"Set (abstract data type)","level":2,"score":0.5385616421699524},{"id":"https://openalex.org/C2779343474","wikidata":"https://www.wikidata.org/wiki/Q3109175","display_name":"Context (archaeology)","level":2,"score":0.5331411361694336},{"id":"https://openalex.org/C23123220","wikidata":"https://www.wikidata.org/wiki/Q816826","display_name":"Information retrieval","level":1,"score":0.5076662302017212},{"id":"https://openalex.org/C48044578","wikidata":"https://www.wikidata.org/wiki/Q727490","display_name":"Scalability","level":2,"score":0.490102618932724},{"id":"https://openalex.org/C170133592","wikidata":"https://www.wikidata.org/wiki/Q1806883","display_name":"Latent semantic analysis","level":2,"score":0.48552823066711426},{"id":"https://openalex.org/C165696696","wikidata":"https://www.wikidata.org/wiki/Q11287","display_name":"Exploit","level":2,"score":0.47911763191223145},{"id":"https://openalex.org/C2778572836","wikidata":"https://www.wikidata.org/wiki/Q380933","display_name":"Space (punctuation)","level":2,"score":0.43117856979370117},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.4255262017250061},{"id":"https://openalex.org/C2522767166","wikidata":"https://www.wikidata.org/wiki/Q2374463","display_name":"Data science","level":1,"score":0.4177204966545105},{"id":"https://openalex.org/C36503486","wikidata":"https://www.wikidata.org/wiki/Q11235244","display_name":"Domain (mathematical analysis)","level":2,"score":0.417153924703598},{"id":"https://openalex.org/C2781238097","wikidata":"https://www.wikidata.org/wiki/Q175026","display_name":"Object (grammar)","level":2,"score":0.4164496660232544},{"id":"https://openalex.org/C204321447","wikidata":"https://www.wikidata.org/wiki/Q30642","display_name":"Natural language processing","level":1,"score":0.401075541973114},{"id":"https://openalex.org/C111919701","wikidata":"https://www.wikidata.org/wiki/Q9135","display_name":"Operating system","level":1,"score":0.0},{"id":"https://openalex.org/C151730666","wikidata":"https://www.wikidata.org/wiki/Q7205","display_name":"Paleontology","level":1,"score":0.0},{"id":"https://openalex.org/C77088390","wikidata":"https://www.wikidata.org/wiki/Q8513","display_name":"Database","level":1,"score":0.0},{"id":"https://openalex.org/C38652104","wikidata":"https://www.wikidata.org/wiki/Q3510521","display_name":"Computer security","level":1,"score":0.0},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.0},{"id":"https://openalex.org/C134306372","wikidata":"https://www.wikidata.org/wiki/Q7754","display_name":"Mathematical analysis","level":1,"score":0.0},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.0},{"id":"https://openalex.org/C199360897","wikidata":"https://www.wikidata.org/wiki/Q9143","display_name":"Programming language","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"mag:792809288","doi":null,"is_oa":false,"landing_page_url":"https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.566626","pdf_url":null,"source":null,"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":null}],"best_oa_location":null,"sustainable_development_goals":[],"study_designs":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":154,"referenced_works":["https://openalex.org/W2304140","https://openalex.org/W40091524","https://openalex.org/W76463049","https://openalex.org/W165686066","https://openalex.org/W184637449","https://openalex.org/W195593750","https://openalex.org/W1482736186","https://openalex.org/W1487060125","https://openalex.org/W1498369119","https://openalex.org/W1517993545","https://openalex.org/W1528789833","https://openalex.org/W1532257412","https://openalex.org/W1546802190","https://openalex.org/W1547483066","https://openalex.org/W1586250870","https://openalex.org/W1587990862","https://openalex.org/W1593793857","https://openalex.org/W1601908677","https://openalex.org/W1612003148","https://openalex.org/W1647729745","https://openalex.org/W1666447063","https://openalex.org/W1755360231","https://openalex.org/W1843222748","https://openalex.org/W1855069005","https://openalex.org/W1880262756","https://openalex.org/W1910578190","https://openalex.org/W1965555277","https://openalex.org/W1966555142","https://openalex.org/W1974403130","https://openalex.org/W1976911320","https://openalex.org/W1979572481","https://openalex.org/W1979972308","https://openalex.org/W1988790447","https://openalex.org/W1988871282","https://openalex.org/W1989085630","https://openalex.org/W1994488383","https://openalex.org/W1994694952","https://openalex.org/W1996122392","https://openalex.org/W2002393437","https://openalex.org/W2003087230","https://openalex.org/W2004994966","https://openalex.org/W2005646337","https://openalex.org/W2007972815","https://openalex.org/W2008445237","https://openalex.org/W2008906462","https://openalex.org/W2013912476","https://openalex.org/W2018318499","https://openalex.org/W2024165284","https://openalex.org/W2025553185","https://openalex.org/W2040087508","https://openalex.org/W2042178278","https://openalex.org/W2048418386","https://openalex.org/W2052378289","https://openalex.org/W2053667957","https://openalex.org/W2056952330","https://openalex.org/W2064204546","https://openalex.org/W2066882130","https://openalex.org/W2073857938","https://openalex.org/W2080828514","https://openalex.org/W2080942732","https://openalex.org/W2085042456","https://openalex.org/W2086815218","https://openalex.org/W2087544865","https://openalex.org/W2095844239","https://openalex.org/W2096691490","https://openalex.org/W2098020658","https://openalex.org/W2098355199","https://openalex.org/W2098469993","https://openalex.org/W2100310475","https://openalex.org/W2100935296","https://openalex.org/W2103467726","https://openalex.org/W2103658758","https://openalex.org/W2103743127","https://openalex.org/W2104111096","https://openalex.org/W2106050175","https://openalex.org/W2106624428","https://openalex.org/W2107890099","https://openalex.org/W2108016650","https://openalex.org/W2109506130","https://openalex.org/W2110119381","https://openalex.org/W2111039654","https://openalex.org/W2111557120","https://openalex.org/W2112020727","https://openalex.org/W2112301665","https://openalex.org/W2112429522","https://openalex.org/W2113054345","https://openalex.org/W2115275373","https://openalex.org/W2115733720","https://openalex.org/W2115763357","https://openalex.org/W2117805756","https://openalex.org/W2117853077","https://openalex.org/W2118165586","https://openalex.org/W2118330267","https://openalex.org/W2118635722","https://openalex.org/W2119288237","https://openalex.org/W2123023145","https://openalex.org/W2123571359","https://openalex.org/W2123625665","https://openalex.org/W2125238156","https://openalex.org/W2125313748","https://openalex.org/W2126522388","https://openalex.org/W2127128140","https://openalex.org/W2127586137","https://openalex.org/W2128568752","https://openalex.org/W2128962821","https://openalex.org/W2130660124","https://openalex.org/W2130939059","https://openalex.org/W2131085577","https://openalex.org/W2131193678","https://openalex.org/W2131743987","https://openalex.org/W2131846894","https://openalex.org/W2134391050","https://openalex.org/W2135986560","https://openalex.org/W2137471889","https://openalex.org/W2138043589","https://openalex.org/W2138226138","https://openalex.org/W2139212933","https://openalex.org/W2140680739","https://openalex.org/W2140887277","https://openalex.org/W2141282920","https://openalex.org/W2143075689","https://openalex.org/W2143559846","https://openalex.org/W2145607950","https://openalex.org/W2146025803","https://openalex.org/W2149954907","https://openalex.org/W2150032155","https://openalex.org/W2150721933","https://openalex.org/W2151003932","https://openalex.org/W2151103935","https://openalex.org/W2151986602","https://openalex.org/W2153603270","https://openalex.org/W2156406284","https://openalex.org/W2159686933","https://openalex.org/W2160166346","https://openalex.org/W2161258050","https://openalex.org/W2161633202","https://openalex.org/W2161920802","https://openalex.org/W2162762921","https://openalex.org/W2163026698","https://openalex.org/W2163397920","https://openalex.org/W2163490908","https://openalex.org/W2164130625","https://openalex.org/W2164598857","https://openalex.org/W2165108943","https://openalex.org/W2165232124","https://openalex.org/W2165558283","https://openalex.org/W2167143366","https://openalex.org/W2167572844","https://openalex.org/W2170969751","https://openalex.org/W2172191903","https://openalex.org/W2533856585","https://openalex.org/W2536208356","https://openalex.org/W2538236017","https://openalex.org/W3144203167"],"related_works":["https://openalex.org/W2037976852","https://openalex.org/W2105130211","https://openalex.org/W2136846563","https://openalex.org/W2081267504","https://openalex.org/W1587131750","https://openalex.org/W1478191287","https://openalex.org/W2550620949","https://openalex.org/W2070959357","https://openalex.org/W1590611237","https://openalex.org/W1969514404"],"abstract_inverted_index":{"The":[0,150],"difficulty":[1,26],"of":[2,21,34,56,60,68,75,94,152,182,190,199,241,249,256,269,280,288,297],"semantic":[3,22,278,295],"multimedia":[4],"analysis":[5,139,163,296],"can":[6,140,166,203,272],"be":[7,51,141,204,273],"attributed":[8],"to":[9,27,63,83,144,156,162,185,275],"the":[10,19,25,48,54,73,80,102,110,179,197,200,237,254,266,277,281,286,294],"extended":[11],"diversity":[12],"in":[13,114,159,293],"form":[14],"and":[15,24,97,134,234,245,259],"appearance":[16],"exhibited":[17],"by":[18],"majority":[20],"concepts":[23],"express":[28],"them":[29],"using":[30,57,76],"a":[31,43,69,120,126,148,227,247],"finite":[32],"number":[33],"patterns.":[35],"In":[36,87],"meeting":[37],"this":[38,88,153],"challenge":[39],"there":[40],"has":[41],"been":[42],"scientific":[44],"debate":[45],"on":[46],"whether":[47],"problem":[49],"should":[50],"addressed":[52],"from":[53,72,106,137],"perspective":[55,74],"overwhelming":[58],"amounts":[59,189],"training":[61,107],"data":[62,108],"capture":[64],"all":[65,289],"possible":[66],"instantiations":[67],"concept,":[70],"or":[71,146],"explicit":[77],"knowledge":[78,103,111],"about":[79],"concepts\u2019":[81],"relations":[82],"infer":[84],"their":[85],"presence.":[86],"thesis":[89],"we":[90,118,172,217,225,284],"address":[91],"three":[92,238],"problems":[93],"pattern":[95],"recognition":[96],"propose":[98,119],"solutions":[99],"that":[100,124,165,177,196,229,252,265],"combine":[101],"extracted":[104],"implicitly":[105],"with":[109,214],"provided":[112],"explicitly":[113],"structured":[115],"form.":[116],"First,":[117],"BNs":[121],"modeling":[122],"approach":[123],"defines":[125],"conceptual":[127],"space":[128,154],"where":[129],"both":[130,257],"domain":[131],"related":[132],"evidence":[133,135],"derived":[136],"content":[138],"jointly":[142],"considered":[143],"support":[145],"disprove":[147],"hypothesis.":[149],"use":[151,287],"leads":[155],"significant":[157],"gains":[158],"performance":[160],"compared":[161],"methods":[164],"not":[167],"handle":[168],"combined":[169],"knowledge.":[170],"Then,":[171],"present":[173],"an":[174,242],"unsupervised":[175],"method":[176,228],"exploits":[178],"collective":[180],"nature":[181],"social":[183,298],"media":[184],"automatically":[186],"obtain":[187],"large":[188,215],"annotated":[191,210],"image":[192],"regions.":[193],"By":[194,263],"proving":[195],"quality":[198],"obtained":[201],"samples":[202],"almost":[205],"as":[206,208,236],"good":[207],"manually":[209],"images":[211,271],"when":[212],"working":[213],"datasets,":[216],"significantly":[218],"contribute":[219],"towards":[220],"scalable":[221],"object":[222],"detection.":[223],"Finally,":[224],"introduce":[226],"treats":[230],"images,":[231],"visual":[232,258],"features":[233],"tags":[235],"observable":[239],"variables":[240],"aspect":[243],"model":[244],"extracts":[246],"set":[248],"latent":[250],"topics":[251],"incorporates":[253],"semantics":[255],"tag":[260],"information":[261,291],"space.":[262],"showing":[264],"cross-modal":[267],"dependencies":[268],"tagged":[270],"exploited":[274],"increase":[276],"capacity":[279],"resulting":[282],"space,":[283],"advocate":[285],"existing":[290],"facets":[292],"media.":[299]},"counts_by_year":[],"updated_date":"2026-11-04T10:54:05.112534","created_date":"2016-06-24T00:00:00"}