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Mads PoulsenView profile

Associate Professor

• Reading development
• Psycholinguistics
• Syntactic comprehension
• +5 more

Mads Poulsen is an Associate Professor in the Department of Nordic Studies and Linguistics at the University of Copenhagen's Faculty of Humanities. His academic work focuses on reading development and psycholinguistics, with particular emphasis on understanding the cognitive and linguistic processes that underpin reading comprehension and difficulties. His educational background includes: PhD in Linguistics from University of Copenhagen (2005) MA in Danish from University of Copenhagen (2001) BA in Danish from University of Copenhagen (1999) Poulsen's research primarily centers on reading development and psycholinguistics, with several key areas of investigation. His work on syntactic comprehension has revealed that children's ability to use word order information is as strong a correlate of reading comprehension as well-known prerequisites like decoding ability and vocabulary. He has conducted longitudinal studies on the correlation between lexical processing and reading, showing how different types of naming tasks relate to various aspects of reading. Poulsen was also involved in developing a web-based test for identifying reading difficulties for the Danish Ministry of Education, which is uniquely used from Grade 3 to university level. Additionally, he has developed and tested an app for computer-assisted instruction in early reading. Analysis of Poulsen's recent publications shows a consistent focus on the relationship between syntactic comprehension and reading ability. His work spans multiple methodologies including experimental studies, longitudinal research, systematic reviews, and practical interventions. The research demonstrates how syntactic processing, lexical access, and other linguistic factors contribute to reading comprehension across different age groups and language contexts. Poulsen is actively involved in teaching Linguistics I, Language and Psychology II, and Statistics in the BA program in Audiologopedics. He also teaches specialized courses in Audiologopedic data interpretation and Project design at the MA level, and supervises students in reading, psycholinguistics, and grammatically oriented logopedics. His research has been supported by grants including funding from the Danish Ministry of Education and an IRFD grant for intervention studies on syntax instruction.

Magnus PharaoView profile

Associate Professor

• Indigenous peoples politics and rights
• Language revitalization
• Mesoamerican linguistics
• +7 more

Magnus Pharao is an Associate Professor in the Department of Cross-Cultural and Regional Studies at the University of Copenhagen's Faculty of Humanities. His research focuses on indigenous Mexican languages, particularly Nahuatl, Otomi, Huichol, and Cora, with expertise spanning linguistic anthropology, historical linguistics, and language politics. Dr. Pharao earned his PhD in Anthropology from Brown University in 2016 with his dissertation 'Nahuatl Nation: Language Revitalization and Indigenous Resurgence in 21st Century Mexico.' His academic journey has established him as a leading scholar in three interconnected research domains: language politics and revitalization, Mesoamerican language history, and the relationship between language and landscape. His research examines the political dimensions of indigenous language revitalization, the historical spread and evolution of Mesoamerican languages, and how physical landscapes shape linguistic structures. His work combines ethnographic fieldwork, historical analysis, and computational methods to address complex questions about language, culture, and identity. Recent publications demonstrate his expertise in Nahuatl syntax, historical linguistics of Uto-Aztecan languages, and the political dimensions of language preservation. His scholarly output reveals a consistent focus on indigenous language documentation, historical linguistic reconstruction, and the sociopolitical contexts of language use. His work bridges traditional linguistic analysis with contemporary concerns about cultural sovereignty and linguistic diversity. Dr. Pharao has received significant research funding including: Marie Skłodowska-Curie Individual Postdoctoral Fellowship (2019-2023) for 'NaWaTL: Narrative, Writing, and the Teotihuacan Language' ERC-stg project: SUAHIST (Exploring the Deep History of Southern Uto-Aztecan Languages and Peoples) Sapere Aude Research Leader project 'Space and Environmental Adaptation in Language and Society' (Nahuatl Space Project) His academic contributions extend beyond traditional research through media engagement, public lectures, and participation in Wikipedia-related discussions about indigenous representation. He maintains an active presence in both scholarly and public discourse on indigenous languages and cultures. Dr. Pharao regularly presents at international conferences and workshops, sharing insights on Nahuatl language studies, historical linguistics, and indigenous sovereignty. His work demonstrates a commitment to both academic rigor and practical applications for language communities.

• Old Norse Studies
• Icelandic Linguistics
• Lexicography
• +2 more

Thordis Edda Johannesdottir serves as an Associate Professor in the Department of Nordic Studies and Linguistics at the Faculty of Humanities, University of Copenhagen, with additional affiliation to The Arnagmagnaean Commission—a renowned research unit for Old Norse manuscripts. Her research spans: Old Norse Studies: Analysis of medieval Icelandic language, literature, and cultural history Lexicography: Compilation of historical dictionaries and textual resources Digital Humanities: Development of computational tools for Norse linguistic corpora Icelandic Linguistics: Evolution of Icelandic syntax and phonology She actively contributes to academic discourse, recently participating as a panel member in the August 5, 2025 lecture "Innovations and Collaborations in Old Norse-Icelandic Lexicography and Digital Resources" alongside international scholars. No scientific awards, student advisement records, or grant details are documented in the provided materials.

Martin Gustaf EhrensvärdView profile

Associate Professor

• Linguistic Dating of Biblical Texts
• Biblical Hebrew Syntax
• Semitic Philology
• +4 more

Martin Gustaf Ehrensvärd is an Associate Professor at the University of Copenhagen, Faculty of Theology, specializing in Biblical Exegesis. With a PhD in Semitic Philology and professional certification as a coach (PCC), he brings a unique interdisciplinary perspective to his academic work. Coordinator of the master's programme in Religious Roots of Europe Teaching biblical and rabbinic Hebrew, classical Arabic, classical Syriac, and other Aramaic dialects Principal Investigator on the AI and Ancient Hebrew Texts project with computer scientist Anders Søgaard Co-author of the influential two-volume work "Linguistic Dating of Biblical Texts" (2008) Translator and editor of "Bibelen 2020" (The Bible 2020) Ehrensvärd's research focuses on linguistic dating of biblical texts, challenging traditional views that linguistic evidence can reliably date biblical compositions. He argues that stylistic choices rather than chronological development explain linguistic variations in biblical texts. His work has significantly contributed to debates about early Hebrew language history through analysis of the Dead Sea Scrolls and other ancient texts. His methodology has evolved to incorporate modern computational techniques, as evidenced by his current project applying machine learning to study ancient Hebrew texts. This represents a significant shift in biblical scholarship, bringing cutting-edge technology to longstanding questions. Ehrensvärd has served as editor for several academic journals including Scandinavian Journal of the Old Testament, Pennsylvania State University Press publications, and Hiphil Novum, demonstrating his standing in the academic community. His academic journey began with his dissertation at Aarhus University in 2002 titled "Studier i bibelsk hebraisk syntaks og datering" (Studies in Biblical Hebrew Syntax and Dating), which laid the foundation for his subsequent influential work in the field.

Kasper SiegismundView profile

Researcher

• Hebrew language
• The Old Testament
• Dead Sea Scrolls
• +10 more

Kasper Siegismund is a Guest Researcher and Postdoc at the Section of Biblical Exegesis within the Faculty of Theology at the University of Copenhagen. Since June 2021, he has been working on the AMRAM project (Apocalypticism: Manuscripts, Rewriting, and Authority Management), investigating early apocalyptic literature with a focus on the Aramaic composition known as 'Visions of Amram' found among the Dead Sea Scrolls. His research explores the tension between divine control and human choice in ancient Jewish writings. Dr. Siegismund received his PhD in June 2018 from the Faculty of Theology at the University of Copenhagen with a dissertation titled 'Studies in the Hebrew Verbal System: Hebrew as a System of Relative Tense and the Origins and Development of the Classical Consecutive Forms.' Prior to that, he earned his MA in Theology (cand.theol.) from the same institution in 2014. He has also completed practical theological pastoral education at Folkekirkens Pastoralseminarium in Copenhagen. His scholarly work spans biblical linguistics and theological interpretation, with particular expertise in Hebrew (biblical, inscriptions, Qumran, rabbinic) and Aramaic (primarily biblical and Qumran Aramaic). He also works extensively with other ancient Semitic languages including Syriac, Ethiopic, Ugaritic, Akkadian, and Arabic. His linguistic background extends to Indo-European languages, with reading knowledge of Gothic and Biblical Armenian in addition to Greek and Latin. His research consistently examines how grammatical structures convey theological concepts in ancient texts, particularly regarding divine sovereignty and human agency. Dr. Siegismund's recent publications reveal a cohesive scholarly trajectory focused on linguistic analysis of biblical texts. His work demonstrates methodological rigor in examining Hebrew verbal systems, Dead Sea Scrolls scholarship, and the interpretation of wisdom literature. A recurring thematic thread across his publications is the investigation of divine determinism and human choice in ancient Jewish thought, particularly as expressed through linguistic structures in biblical and apocryphal texts. Active researcher in the AMRAM project investigating early apocalyptic literature Contributor to digital edition of Amram manuscripts and commentary Author of multiple scholarly publications on Hebrew language and biblical interpretation Creator of educational resources including Hebrew grammar overviews and Classical Ethiopic materials Alongside his academic work, Dr. Siegismund has maintained pastoral ministry at Herstedøster Kirke, serving at 50% capacity from July 2019 to September 2021, and full-time from April 2024 to January 2025. His teaching experience includes courses on apocalyptic literature, wisdom literature, Old Testament studies, and language instruction in Biblical Hebrew and Classical Ethiopic, demonstrating his commitment to both scholarly research and practical theological education.

Hans Peter HalvorsonView profile

Professor

• Philosophy of Physics
• Philosophy of Science
• Logic
• +3 more

Hans Peter Halvorson serves as a Professor in the Department of Science Education at the University of Copenhagen, Denmark, with his academic base at Jagtvej 155A, 2200 København N. His publicly listed contact details include a direct phone line (+4535320261) and professional email address (hans.halvorson@ind.ku.dk), reflecting an active institutional affiliation. With 50 documented research outputs spanning diverse publication types, Halvorson maintains a robust scholarly presence in theoretical philosophy and science education. Halvorson's research program centers on foundational questions in the philosophy of physics and philosophy of science, characterized by rigorous analytical engagement with logical empiricism, the structure of scientific theories, and quantum mechanical interpretations. His work critically examines objectivity in physical descriptions, theory equivalence, and the philosophical implications of modern physics, often through historical analysis of pivotal figures like John Bell and Niels Bohr. The publication of his 2020 textbook "How Logic Works: A User's Guide" demonstrates his commitment to formal logic education alongside specialized theoretical contributions. Analysis of his 2020-2024 publications reveals consistent methodological coherence, with recurring emphasis on the interplay between logical frameworks and physical theory construction. His scholarship frequently addresses translatability between theoretical systems, the status of theoretical entities, and quantum foundational debates, appearing in high-impact venues like Mind , Synthese , and the Journal for General Philosophy of Science . This output pattern indicates sustained engagement with core epistemological questions in physical science. No scientific awards, honors, or fellowships are explicitly documented in the source material, suggesting either omission in the scraped content or absence of such recognitions in the public profile. Similarly, the text provides no indication of external research funding mechanisms or grant-supported projects that might underpin his scholarly activities. Regarding academic mentorship, the available documentation lacks any enumeration of doctoral or master's students supervised by Halvorson. This absence contrasts with typical senior faculty profiles but may reflect selective presentation in the source material. Institutional context also omits details about research teams, laboratory facilities, or collaborative networks within the Department of Science Education, leaving his operational research environment undefined in this particular snapshot.

Henrik HovmarkView profile

Associate Professor

• semantics
• cognitive linguistics
• dialectology
• +5 more

Henrik Hovmark is an Associate Professor in the Department of Nordic Studies and Linguistics at the Faculty of Humanities, University of Copenhagen, where he has been a core faculty member since 2017. He serves as leading co-editor of the Dictionary of Danish Insular Dialects (Ømålsordbogen) and specializes in the intersection of linguistic theory, dialect documentation, and socio-cultural analysis. Education: PhD in Humanities (2007), University of Copenhagen. Dissertation: "Danish Directional Adverbs and Spatial Orientation" cand.mag. et art. (1996), University of Copenhagen (French, Danish/pedagogy, Latin) Merit exams in French, Université Charles de Gaulle Lille III (1991-92) Student degree, Thisted Gymnasium (1985) Research Interests: Dr. Hovmark's work centers on cognitive linguistics , particularly spatial language and the socio-culturally embedded conceptualization of place. His research examines how language shapes mental maps, constructs identity through place, and preserves cultural knowledge in dialects. He combines historical lexicography with cutting-edge digital humanities approaches to analyze Danish dialects, with special focus on insular communities. His scholarship bridges theoretical linguistics and practical dictionary compilation. Publication Trends: His recent output (2015-2023) reveals three converging trajectories: (1) Digital transformation of dialect archives (e.g., digitization challenges), (2) Socio-dialectology examining gender and urban/rural identity through language, and (3) Cognitive analysis of spatial language evolution. These strands collectively demonstrate how linguistic structures encode cultural relationships to place, with increasing emphasis on interdisciplinary methodologies connecting linguistics to anthropology and digital humanities. Scientific Awards: None reported in available sources. Advising and Grants: While specific advising relationships and grant funding details are not documented in the provided materials, his leadership roles in major editorial projects (Ømålsordbogen, LexicoNordica) indicate substantial research management experience. His conference organization activities suggest active mentorship within Nordic lexicography circles. Labs and Teams: Hovmark is central to the Ømålsordbogen research collective at the University of Copenhagen, which documents endangered Danish island dialects. He collaborates internationally through the Nordic Association for Lexicography (where he served as President 2013-2017) and co-organizes the LexicoNordica symposia series, fostering cross-border research on dictionary science and dialect preservation.

Marie Herget ChristensenView profile

Associate Professor

• Syntax
• Functional grammar
• Language variation and change
• +4 more

Marie Herget Christensen is an Associate Professor in the Department of Nordic Studies and Linguistics (NorS) at the University of Copenhagen's Faculty of Humanities. She serves as a language psychology lecturer and researcher, with extensive teaching responsibilities across multiple academic programs including language psychology, Danish, audiology, and linguistics. Current position: Studielektor på sprogpsykologi (2024-present) Previous positions: Undervisningsassistent på sprogpsykologi (2022-2024), Postdoc on 'Truslers sprog og genre' project (2020-2022), External lecturer on Danish program (2019-2020) Her educational background includes a PhD in Danish grammar from the University of Copenhagen (2019), a cand. Mag. in Linguistics (2013), and a University Pedagogicum (2024). Christensen's research focuses on the intersection of grammatical structure and language use in various contexts. Her primary research areas include syntax, functional grammar, language variation and change, corpus linguistics, experimental linguistics, forensic linguistics, and atypical interaction. She leads innovative research applying functional grammar to examine how individuals with schizophrenia describe their auditory hallucinations and other psychotic symptoms. Her previous work on the 'Truslers sprog og genre' project investigated grammatical features of threatening communications through quantitative language analysis of a threat corpus she helped develop. Her publication record shows significant activity in forensic linguistics and Danish syntax, with multiple publications in 2023-2025 focusing on threatening communications, sentence splitting constructions, and grammatical analysis. Her research demonstrates a consistent thread connecting theoretical linguistics with practical applications in clinical and forensic contexts. Christensen has supervised over 20 theses and bachelor projects, developing specialized courses including 'Atypisk kommunikation: interaktion blandt, med og om neurodivergente sprogbrugere' for the language psychology master's program and 'Videregående Pragmatik' for the Danish master's program. She also created the 'Basisgrammatik' course for first-year Danish students. Teaching areas: Atypical interaction, advanced pragmatics, introduction to language psychology, basic grammar, semantics, and pragmatics Supervision focus: Language psychology, atypical interaction, functional grammar She is affiliated with the Sprogpsykologi research group at NorS, where she conducts both teaching and research activities. Her work bridges theoretical linguistics with practical applications in clinical psychology and forensic contexts, particularly through her analysis of language patterns in threatening communications and atypical interaction scenarios.

• Linguistics
• German Linguistics
• General Linguistics
• +23 more

Klaus Geyer is an Associate Professor and Head of Studies in the Department of Cultural and Linguistic Studies at the University of Southern Denmark (SDU), Faculty of Humanities. He holds a Dr. phil. in German and General Linguistics from Christian-Albrechts-University of Kiel and has previously held academic positions at the University of Erfurt, Vilnius Pedagogical University, Bielefeld University, and the University of Flensburg. His current research and teaching focus on linguistic structures in social and digital contexts. His academic qualifications include: Dr. phil. in German and General Linguistics, Christian-Albrechts-University of Kiel (2001) Magister Artium in General Linguistics, Nordic, and German Philology, Christian-Albrechts-University of Kiel (1998) Studies in Nordic, German Philology, and Geography at Friedrich-Alexander University Erlangen-Nürnberg (1990–1994) Studies in Nordic and General Linguistics at the University of Gothenburg (1992) Klaus Geyer's research interests are broad and interdisciplinary, focusing on the interface between language, society, and media. His work encompasses sociolinguistics, grammar, phonetics, and digital communication. He investigates how language is used in organizational settings, how minorities manage linguistic identity, and how grammar reflects information structure. A significant portion of his recent research analyzes online hate speech , particularly in Danish social media, using corpus-based methods to uncover patterns of xenophobia and evidential practices such as hyperlinking. He also explores challenges in audiovisual translation , especially regarding dialects in Scandinavian media, and contributes to phonological studies on diphthongs and language documentation. His recent publications reveal a strong trend toward digital discourse analysis, with a focus on hate speech in Facebook and online Danish media. These works combine corpus linguistics, pragmatics, and sociolinguistics to examine how language functions as a tool of exclusion and evidence in public discourse. His research often employs multimodal and cross-linguistic approaches, reflecting a deep engagement with both theoretical and applied linguistics. Klaus Geyer is actively involved in multiple research projects, including: Xperohs: Towards Balance and Boundaries in Public Discourse – as project leader, examining expression and perception of online hate speech (2018–2023) Towards Balance and Boundaries in Public Discourse – ongoing project on online hate speech Patientologie - Human Health – as CoI, exploring health communication during the COVID-19 pandemic He has also served as a peer reviewer, journal editor, and member of academic committees, including the Deutsche Forschungsgemeinschaft research network on argumentative learning texts. He regularly delivers guest lectures and participates in international conferences, contributing to academic and public discourse on language and society. Klaus Geyer leads and teaches courses such as "Was ist Deutsch?", "Videnskabsteori II", and "Hvad er tysk?", reflecting his commitment to education in German linguistics and research methodology. His academic fingerprint includes strong engagement with corpus linguistics, evidentiality, online hate speech, and audiovisual translation, positioning him as a key figure in contemporary linguistic research on digital communication and social discourse.

Ken Ramshøj ChristensenView profile

Associate Professor

• Language Processing
• Psycholinguistics
• Neurolinguistics
• +5 more

Ken Ramshøj Christensen serves as Associate Professor in the Department of English at Aarhus University's School of Communication and Culture, conducting interdisciplinary research at the nexus of linguistic theory, cognitive science, and neuroscience. His core expertise spans sentence processing of syntactic constraints—particularly island phenomena —using fMRI and behavioral methodologies, alongside investigations into negation neurology and supernatural belief systems in secular contexts. Current work emphasizes experimental validation of extraction constraints across Danish-English bilingualism and large-scale quantitative analysis of cultural belief patterns. Analysis of his 15 most recent publications (2022-2025) reveals sustained focus on syntactic island processing with growing interdisciplinary integration of cognitive anthropology. Methodologically, he bridges theoretical syntax with empirical neuroscience through controlled experimentation and corpus analysis. Christensen's research is supported by major funded projects: Language in the Brain (2009-2013): fMRI investigation of syntactic processing neural correlates At the Edge of Language (2020-2024): Experimental syntax project examining grammatical boundaries through behavioral studies These initiatives facilitate cross-departmental collaboration with neuroscientists and cognitive scientists while supporting graduate mentoring in experimental linguistics.

Torben BraünerView profile

Professor

• Hybrid Logic
• Computational Logic
• Cognitive Psychology
• +7 more

Torben Braüner is a Professor in the Department of People and Technology Programming, Logic and Intelligent Systems at Roskilde University, Denmark. His work bridges formal logic and cognitive psychology with significant contributions to autism spectrum disorder research. He maintains an active research program with 97 publications and multiple funded projects. Professor Braüner's research spans several interconnected domains: Development and application of hybrid logic systems Formal reasoning and proof theory Cognitive psychology, particularly Theory of Mind phenomena Autism Spectrum Disorder (ASD) diagnostic approaches Linguistic recursion and language development in neurodiverse populations Temporal logic and philosophical implications of formal systems His recent publications demonstrate a strong interdisciplinary trajectory, combining sophisticated logical frameworks with empirical psychological research. The majority of his work since 2019 focuses on applying hybrid logic to model cognitive processes in ASD populations, particularly analyzing false-belief tasks and linguistic recursion patterns. His research shows increasing collaboration with cognitive scientists and psychologists, reflecting the maturation of this interdisciplinary field. Professor Braüner has secured significant research funding including: VELUX FONDEN for 'Hybrid-Logical Proofs at Work in Cognitive Psychology' (2014-2019) The Danish Natural Science Research Council for 'HYLOCORE: Hybrid Logic, Computation, and Reasoning Methods' (2009-2013) The Danish Natural Science Research Council for 'HyLoMOL: Hybrid Logic Meets Other Logics' (2005-2008) His academic engagement includes regular presentations at major conferences such as the European Conference on Artificial Intelligence and the Nordic Logic Summer School, demonstrating his active role in both logic and cognitive science communities.

• Programming Languages
• Compiler Technology
• Reversible Computation
• +5 more

Torben Ægidius Mogensen is an Associate Professor at the Department of Computer Science, University of Copenhagen, where he leads research in the Programming Languages and Theory of Computation section. His office is located at Universitetsparken 5, Copenhagen. His primary research focuses on: Automatic program analysis and transformation (especially partial evaluation and semi-inversion) Compiler technology for functional languages Domain-specific language design Reversible computing systems and languages Algorithms, complexity theory, and automata theory Applications in graphics and fractal generation His recent publications demonstrate a strong focus on reversible computation systems, including specialized programming languages like Hermes for encryption, reversible processor architectures, and functional programming extensions. His textbook publications on compiler design (2024) and programming language implementation (2022) indicate significant contributions to computer science education and foundational knowledge. He teaches courses on compilers, programming language technology, and game development, and maintains active research collaborations internationally. He is fluent in Danish and English, with working knowledge of German and Romanian.

• Machine Learning
• Natural Language Processing
• Medical Data Analysis
• +4 more

Mads Nielsen is a Professor at the University of Copenhagen's Department of Computer Science (DIKU), affiliated with the Pioneer AI (P1AI) section and the Machine Learning research group. His work spans theoretical and applied machine learning, with applications in natural language processing, medical data analysis, remote sensing, sustainability, and computational biology. His research group actively participates in the SCIENCE AI Centre and TreeSense, focusing on remote sensing and deep learning for global tree resources. DIKU provides access to a powerful compute cluster, enabling advanced research in these domains. The Machine Learning Section, where he is a member, emphasizes interdisciplinary collaboration and addresses challenges in information retrieval, biological data modeling, and climate-related sustainability through AI-driven solutions. Contact: madsn@di.ku.dk | Location: Øster Voldgade 3, København K, Denmark.

Liselotte Kruse HansenView profile

Part-Time Lecturer

• Lexicography
• French Language Studies
• Business Communication
• +3 more

Liselotte Kruse Hansen is a Part-Time Lecturer at Aarhus University , affiliated with the School of Communication and Culture . Her work focuses on lexicography and French-Danish bilingual terminology, particularly in business communication contexts. She contributed to the development of a French-Danish property dictionary (Ejendomsordbogen) in collaboration with Ordbogen.com, emphasizing digital lexicography tools and multilingual resources. Her research interests include digital humanities, terminology research, and cross-linguistic analysis. While no scientific awards are explicitly listed, her projects reflect significant contributions to lexicographical methodologies. She has no listed advisees or grants in the provided data. Her professional activities include academic writing and collaborative projects in lexicography, leveraging her expertise in French and Danish linguistic structures.

• Computability Theory
• Rewriting
• Lambda Calculus
• +3 more

Jakob Grue Simonsen is a Professor and Department Chair at the Department of Computer Science (DIKU), University of Copenhagen. He holds a Dr. Scient., PhD, and MBA. His research focuses on the mathematics of computation, including computability theory, term rewriting, lambda calculus, complexity hierarchies, and symbolic dynamics, with applications in information retrieval and human-computer interaction. His primary research explores infinite computational processes and their finite representations, alongside practical work in neural hashing, fact-checking systems, and quantum language models. Previously, he contributed to constructive mathematics and biocomputing. An analysis of his 15 most recent publications (2015–2022) reveals strong emphasis on: Theoretical computability and game-theoretic models Neural networks for NLP (BERT, semantic hashing) Fact verification and explainable AI methodologies Efficient retrieval algorithms and recommendation systems Awards: RTA 2004 Best Paper Award CHI '13 Honorable Mention CHI '14 Honorable Mention