{"id":"https://openalex.org/A5007635720","orcid":"https://orcid.org/0000-0001-8767-4136","observed_orcids":["https://orcid.org/0000-0001-8767-4136"],"display_name":"Karl Hammar","raw_author_names":["Hammar, K","Hammar, Karl","Karl Hammar"],"full_name":"Hammar, Karl","works_count":55,"cited_by_count":473,"summary_stats":{"2yr_mean_citedness":0.0,"h_index":13,"i10_index":15},"ids":{"openalex":"https://openalex.org/A5007635720","orcid":"https://orcid.org/0000-0001-8767-4136","observed_orcids":["https://orcid.org/0000-0001-8767-4136"]},"affiliations":[{"institution":{"id":"https://openalex.org/I102134673","ror":"https://ror.org/05ynxx418","display_name":"Link\u00f6ping University","country_code":"SE","type":"education","lineage":["https://openalex.org/I102134673"]},"years":[2019,2018,2017,2014]},{"institution":{"id":"https://openalex.org/I22188714","ror":"https://ror.org/02xh9x144","display_name":"University of Prince Edward Island","country_code":"CA","type":"education","lineage":["https://openalex.org/I22188714"]},"years":[2017]},{"institution":{"id":"https://openalex.org/I865915315","ror":"https://ror.org/008xxew50","display_name":"Vrije Universiteit Amsterdam","country_code":"NL","type":"education","lineage":["https://openalex.org/I865915315"]},"years":[2011]},{"institution":{"id":"https://openalex.org/I94616838","ror":"https://ror.org/03t54am93","display_name":"J\u00f6nk\u00f6ping University","country_code":"SE","type":"education","lineage":["https://openalex.org/I94616838"]},"years":[2022,2021,2020,2019,2018,2016,2015,2014,2013,2012,2011,2010]}],"last_known_institutions":[{"id":"https://openalex.org/I94616838","ror":"https://ror.org/03t54am93","display_name":"J\u00f6nk\u00f6ping University","country_code":"SE","type":"education","lineage":["https://openalex.org/I94616838"]}],"topics":[{"id":"https://openalex.org/T10215","display_name":"Semantic Web and Ontologies","count":50,"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/T11710","display_name":"Biomedical Text Mining and Ontologies","count":34,"subfield":{"id":"https://openalex.org/subfields/2718","display_name":"Health Informatics"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},{"id":"https://openalex.org/T14330","display_name":"Library Science and Information Systems","count":30,"subfield":{"id":"https://openalex.org/subfields/1710","display_name":"Information Systems"},"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/T10679","display_name":"Service-Oriented Architecture and Web Services","count":4,"subfield":{"id":"https://openalex.org/subfields/1710","display_name":"Information Systems"},"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/T11450","display_name":"Model-Driven Software Engineering Techniques","count":4,"subfield":{"id":"https://openalex.org/subfields/1712","display_name":"Software"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"topic_share":[{"id":"https://openalex.org/T11710","display_name":"Biomedical Text Mining and Ontologies","value":0.0002994,"subfield":{"id":"https://openalex.org/subfields/2718","display_name":"Health Informatics"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},{"id":"https://openalex.org/T10215","display_name":"Semantic Web and Ontologies","value":0.0001802,"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/T14330","display_name":"Library Science and Information Systems","value":0.0001542,"subfield":{"id":"https://openalex.org/subfields/1710","display_name":"Information Systems"},"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/T13274","display_name":"Expert finding and Q&A systems","value":5.11e-05,"subfield":{"id":"https://openalex.org/subfields/1710","display_name":"Information Systems"},"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/T13243","display_name":"Innovation in Digital Healthcare Systems","value":4.96e-05,"subfield":{"id":"https://openalex.org/subfields/3605","display_name":"Health Information Management"},"field":{"id":"https://openalex.org/fields/36","display_name":"Health Professions"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}}],"x_concepts":[{"id":"25810664","wikidata":"https://www.wikidata.org/wiki/Q44325","display_name":"Ontology","score":0.9172706604003906},{"id":"41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","score":0.8702536821365356},{"id":"136764020","wikidata":"https://www.wikidata.org/wiki/Q466","display_name":"World Wide Web","score":0.612792432308197},{"id":"111472728","wikidata":"https://www.wikidata.org/wiki/Q9471","display_name":"Epistemology","score":0.2303587794303894},{"id":"138885662","wikidata":"https://www.wikidata.org/wiki/Q5891","display_name":"Philosophy","score":0.19920286536216736}],"counts_by_year":[{"year":2009,"works_count":1,"oa_works_count":1,"cited_by_count":0},{"year":2010,"works_count":2,"oa_works_count":2,"cited_by_count":0},{"year":2011,"works_count":3,"oa_works_count":3,"cited_by_count":0},{"year":2012,"works_count":4,"oa_works_count":2,"cited_by_count":4},{"year":2013,"works_count":5,"oa_works_count":2,"cited_by_count":9},{"year":2014,"works_count":6,"oa_works_count":4,"cited_by_count":14},{"year":2015,"works_count":1,"oa_works_count":1,"cited_by_count":11},{"year":2016,"works_count":2,"oa_works_count":2,"cited_by_count":13},{"year":2017,"works_count":5,"oa_works_count":3,"cited_by_count":25},{"year":2018,"works_count":5,"oa_works_count":3,"cited_by_count":20},{"year":2019,"works_count":8,"oa_works_count":5,"cited_by_count":20},{"year":2020,"works_count":4,"oa_works_count":4,"cited_by_count":38},{"year":2021,"works_count":6,"oa_works_count":3,"cited_by_count":37},{"year":2022,"works_count":2,"oa_works_count":2,"cited_by_count":45},{"year":2023,"works_count":0,"oa_works_count":0,"cited_by_count":54},{"year":2024,"works_count":0,"oa_works_count":0,"cited_by_count":75},{"year":2025,"works_count":0,"oa_works_count":0,"cited_by_count":60},{"year":2026,"works_count":0,"oa_works_count":0,"cited_by_count":45}],"display_name_alternatives":["Hammar, K","Hammar, Karl","Karl Hammar"],"block_key":"k hammar","works_api_url":"https://api.openalex.org/works?filter=author.id:A5007635720","awards_count":0,"awards_api_url":"https://api.openalex.org/awards?filter=investigators.author.id:A5007635720","updated_date":"2026-11-14T11:48:19","created_date":"2016-06-24T00:00:00"}
