{"id":"https://openalex.org/W1480615002","doi":"https://doi.org/10.1007/978-3-642-02124-4_33","title":"From Random to Hierarchical Data through an Irregular Pyramidal Structure","display_name":"From Random to Hierarchical Data through an Irregular Pyramidal Structure","publication_year":2009,"publication_date":"2009-01-01","ids":{"openalex":"https://openalex.org/W1480615002","doi":"https://doi.org/10.1007/978-3-642-02124-4_33","mag":"1480615002"},"language":"en","primary_location":{"id":"doi:10.1007/978-3-642-02124-4_33","is_oa":false,"landing_page_url":"https://doi.org/10.1007/978-3-642-02124-4_33","pdf_url":null,"source":{"id":"https://openalex.org/S106296714","display_name":"Lecture notes in computer science","issn_l":"0302-9743","issn":["0302-9743","1611-3349"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319900","host_organization_name":"Springer Science+Business Media","host_organization_lineage":["https://openalex.org/P4310319900","https://openalex.org/P4310319965"],"host_organization_lineage_names":["Springer Science+Business Media","Springer Nature"],"type":"book series"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Lecture Notes in Computer Science","raw_type":"book-chapter"},"type":"book-chapter","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/A5072123773","display_name":"Rimon Elias","orcid":"https://orcid.org/0000-0001-6321-096X"},"institutions":[{"id":"https://openalex.org/I96823368","display_name":"German University in Cairo","ror":"https://ror.org/03rjt0z37","country_code":"EG","type":"education","lineage":["https://openalex.org/I96823368"]}],"countries":["EG"],"is_corresponding":true,"raw_author_name":"Rimon Elias","raw_affiliation_strings":["Faculty of Digital Media Engineering and Technology, German University in Cairo, New Cairo City, Egypt"],"affiliations":[{"raw_affiliation_string":"Faculty of Digital Media Engineering and Technology, German University in Cairo, New Cairo City, Egypt","institution_ids":["https://openalex.org/I96823368"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5060849504","display_name":"Mohab Al Ashraf","orcid":null},"institutions":[{"id":"https://openalex.org/I96823368","display_name":"German University in Cairo","ror":"https://ror.org/03rjt0z37","country_code":"EG","type":"education","lineage":["https://openalex.org/I96823368"]}],"countries":["EG"],"is_corresponding":false,"raw_author_name":"Mohab Al Ashraf","raw_affiliation_strings":["Faculty of Digital Media Engineering and Technology, German University in Cairo, New Cairo City, Egypt"],"affiliations":[{"raw_affiliation_string":"Faculty of Digital Media Engineering and Technology, German University in Cairo, New Cairo City, Egypt","institution_ids":["https://openalex.org/I96823368"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5006048385","display_name":"Omar M. Aly","orcid":"https://orcid.org/0000-0001-9299-920X"},"institutions":[{"id":"https://openalex.org/I96823368","display_name":"German University in Cairo","ror":"https://ror.org/03rjt0z37","country_code":"EG","type":"education","lineage":["https://openalex.org/I96823368"]}],"countries":["EG"],"is_corresponding":false,"raw_author_name":"Omar Aly","raw_affiliation_strings":["Faculty of Digital Media Engineering and Technology, German University in Cairo, New Cairo City, Egypt"],"affiliations":[{"raw_affiliation_string":"Faculty of Digital Media Engineering and Technology, German University in Cairo, New Cairo City, Egypt","institution_ids":["https://openalex.org/I96823368"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":3,"corresponding_author_ids":["https://openalex.org/A5072123773"],"corresponding_institution_ids":["https://openalex.org/I96823368"],"apc_list":{"value":5000,"currency":"EUR","value_usd":5392},"apc_paid":null,"fwci":0.4236,"has_fulltext":false,"cited_by_count":1,"citation_normalized_percentile":{"value":0.50713466,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":null,"issue":null,"first_page":"324","last_page":"333"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10799","display_name":"Data Visualization and Analytics","score":0.9994999766349792,"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/T10799","display_name":"Data Visualization and Analytics","score":0.9994999766349792,"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/T11106","display_name":"Data Management and Algorithms","score":0.9991999864578247,"subfield":{"id":"https://openalex.org/subfields/1711","display_name":"Signal Processing"},"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/T10824","display_name":"Image Retrieval and Classification Techniques","score":0.9951000213623047,"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/computer-science","display_name":"Computer science","score":0.7290115356445312},{"id":"https://openalex.org/keywords/data-structure","display_name":"Data structure","score":0.6552358269691467},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.4793611168861389},{"id":"https://openalex.org/keywords/hierarchical-database-model","display_name":"Hierarchical database model","score":0.4736900329589844},{"id":"https://openalex.org/keywords/space","display_name":"Space (punctuation)","score":0.472013920545578},{"id":"https://openalex.org/keywords/euclidean-space","display_name":"Euclidean space","score":0.4699682891368866},{"id":"https://openalex.org/keywords/euclidean-distance","display_name":"Euclidean distance","score":0.4426718056201935},{"id":"https://openalex.org/keywords/series","display_name":"Series (stratigraphy)","score":0.42813605070114136},{"id":"https://openalex.org/keywords/euclidean-geometry","display_name":"Euclidean geometry","score":0.41725364327430725},{"id":"https://openalex.org/keywords/theoretical-computer-science","display_name":"Theoretical computer science","score":0.3990267217159271},{"id":"https://openalex.org/keywords/data-mining","display_name":"Data mining","score":0.36425089836120605},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.2684939205646515},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.19923633337020874},{"id":"https://openalex.org/keywords/combinatorics","display_name":"Combinatorics","score":0.16257575154304504},{"id":"https://openalex.org/keywords/geometry","display_name":"Geometry","score":0.1288643777370453}],"concepts":[{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.7290115356445312},{"id":"https://openalex.org/C162319229","wikidata":"https://www.wikidata.org/wiki/Q175263","display_name":"Data structure","level":2,"score":0.6552358269691467},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.4793611168861389},{"id":"https://openalex.org/C144986985","wikidata":"https://www.wikidata.org/wiki/Q871236","display_name":"Hierarchical database model","level":2,"score":0.4736900329589844},{"id":"https://openalex.org/C2778572836","wikidata":"https://www.wikidata.org/wiki/Q380933","display_name":"Space (punctuation)","level":2,"score":0.472013920545578},{"id":"https://openalex.org/C186450821","wikidata":"https://www.wikidata.org/wiki/Q17295","display_name":"Euclidean space","level":2,"score":0.4699682891368866},{"id":"https://openalex.org/C120174047","wikidata":"https://www.wikidata.org/wiki/Q847073","display_name":"Euclidean distance","level":2,"score":0.4426718056201935},{"id":"https://openalex.org/C143724316","wikidata":"https://www.wikidata.org/wiki/Q312468","display_name":"Series (stratigraphy)","level":2,"score":0.42813605070114136},{"id":"https://openalex.org/C129782007","wikidata":"https://www.wikidata.org/wiki/Q162886","display_name":"Euclidean geometry","level":2,"score":0.41725364327430725},{"id":"https://openalex.org/C80444323","wikidata":"https://www.wikidata.org/wiki/Q2878974","display_name":"Theoretical computer science","level":1,"score":0.3990267217159271},{"id":"https://openalex.org/C124101348","wikidata":"https://www.wikidata.org/wiki/Q172491","display_name":"Data mining","level":1,"score":0.36425089836120605},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.2684939205646515},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.19923633337020874},{"id":"https://openalex.org/C114614502","wikidata":"https://www.wikidata.org/wiki/Q76592","display_name":"Combinatorics","level":1,"score":0.16257575154304504},{"id":"https://openalex.org/C2524010","wikidata":"https://www.wikidata.org/wiki/Q8087","display_name":"Geometry","level":1,"score":0.1288643777370453},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.0},{"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/C199360897","wikidata":"https://www.wikidata.org/wiki/Q9143","display_name":"Programming language","level":1,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1007/978-3-642-02124-4_33","is_oa":false,"landing_page_url":"https://doi.org/10.1007/978-3-642-02124-4_33","pdf_url":null,"source":{"id":"https://openalex.org/S106296714","display_name":"Lecture notes in computer science","issn_l":"0302-9743","issn":["0302-9743","1611-3349"],"is_oa":false,"is_in_doaj":false,"is_core":true,"host_organization":"https://openalex.org/P4310319900","host_organization_name":"Springer Science+Business Media","host_organization_lineage":["https://openalex.org/P4310319900","https://openalex.org/P4310319965"],"host_organization_lineage_names":["Springer Science+Business Media","Springer Nature"],"type":"book series"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Lecture Notes in Computer Science","raw_type":"book-chapter"}],"best_oa_location":null,"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/11","score":0.47999998927116394,"display_name":"Sustainable cities and communities"}],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":26,"referenced_works":["https://openalex.org/W21553565","https://openalex.org/W190320872","https://openalex.org/W628139972","https://openalex.org/W1496054714","https://openalex.org/W1534832173","https://openalex.org/W1881069777","https://openalex.org/W1994825637","https://openalex.org/W2030615962","https://openalex.org/W2052606569","https://openalex.org/W2086050593","https://openalex.org/W2096697416","https://openalex.org/W2099657302","https://openalex.org/W2101335449","https://openalex.org/W2106441507","https://openalex.org/W2106588364","https://openalex.org/W2120329225","https://openalex.org/W2121155062","https://openalex.org/W2121483015","https://openalex.org/W2130675236","https://openalex.org/W2146520578","https://openalex.org/W2156136663","https://openalex.org/W2171373347","https://openalex.org/W2487802744","https://openalex.org/W3147925210","https://openalex.org/W4231023127","https://openalex.org/W4248807401"],"related_works":["https://openalex.org/W2090152127","https://openalex.org/W1965169884","https://openalex.org/W3125580510","https://openalex.org/W2008939113","https://openalex.org/W2033213447","https://openalex.org/W14679004","https://openalex.org/W1566651525","https://openalex.org/W2977652649","https://openalex.org/W2318206461","https://openalex.org/W2105228010"],"abstract_inverted_index":null,"counts_by_year":[],"updated_date":"2025-11-06T03:46:38.306776","created_date":"2025-10-10T00:00:00"}