Yet another successful International Conference on Knowledge Engineering and Knowledge Management 2014 (EKAW’14) (in Linköping, Sweden) has just concluded. It was packed with three keynotes, long ans short presentations, posters and demo session, and related workshops and PhD symposium. Big thanks to Patrick Lambrix for the excellent local organisation, and to Stefan Schlobach and Krzysztof Janowicz for putting an interesting programme together! The remainder of the post touches upon some highlights.
The first keynote was by Pascal Hitzler, who talked about ontology design patterns (ODPs) for large-scale data interchange and discovery. He emphasised the need for principled use of ODPs, including the development of a theory of patterns concerning generic vs specific modelling patterns, developing pattern languages and tools, and understanding and formalising relationships between patterns. It sort of did set the tone, and ODPs were a recurring item of the conference. Oscar Corcho gave a reflective and very entertaining keynote on ontology engineering (slides on slideshare). Not to mention the language and tool wars (DL and Protégé won), are you an alpha (philosopher—one term a day), beta, gamma, delta, or epsilon (schema.org contributor), or a ‘savage’ in the brave little world of knowledge management? He identified five deadlocks on communicating the message to ‘the masses’ (ontology reuse, inferences, lightweight vs heavyweight, tooling, multilingualism) and four recommendations; the one missing being on what to do with multilingualism. A lively discussion followed, and references to some of the aspects raised were returning throughout the conference and probably will afterwards as well. The third keynote was by philosopher Arianna Betti, who was basically putting forward the question what we can give her for helping her in the digital humanities on tracking scientific ideas, as described in humanities texts, over time—toward a computational history of ideas. The view from outside in a way was describing some requirements for us and generated some brainstorming afterward, as it does not seem unfeasible to do. A brief handout with some more precise ideas on where models would fit is available via here twitter account (direct link).
Unlike in my PhD student years where I typically tried to read at least a third of the papers before going to the conference, I’ve gotten in the habit of selecting papers to read based on the titles and presentations, and I haven’t read yet the ones I’m mentioning now, but they seem worth mentioning anyway (obviously with my bias and interests, daily intake-capacity, and time constraints writing this the evening before departure in the very early morning).
Several people at UCT are looking into crowdsourcing, and there were two papers about that, being one using pay-as-you-go alignments  and one Protégé plugin linked to CrowdFlower for ontology development that despite the CrowdFlower costs, ended up to being cheaper than a few manual experts . Somewhat related to that is Klink UM for extracting hierarchical and similarity relationships based on user feedback , and when we’re at it with relationships, there’s a paper on finding (improving) the semantics of relations, being DBpedia’s wikiPage wiki links , as well as how object properties are used in ontologies . The latter discovered that object properties are used quite differently when using ODPs vs not using ODPs: the former more often reuses a property and constrains it in an axiom, the latter uses more subtyping and domain and range axioms, and the latter appears to be computationally more efficient (so there are some interesting trade-offs to look into). Other considerations in modelling included further works on anti-patterns with results from real knowledge base development . Related to my own talk about the stuff ontology, was the paper on supply chains and traceability of datasets , which we possibly can combine in some way. The paper on clinical guidelines  will be passed on to one of my students, who’s trying to build one tailored to a low resource setting with less-skilled health workers, and we probably also will follow up on the study question generation paper  that used a knowledge base and template questions to generate natural language questions that the system also can answer, therewith automating to some extent interactive learning by the student. The latter also won the best demo award. The best paper award went to the paper on adaptive knowledge propagation in web ontologies .
The other activities
A conference would not be complete without some social event(s). There was even an extra social event the first evening: ice hockey, which was fun, not only because it was the first time I watched such a game in a stadium, but also because there’s a lot of action and it never gets dull, and to top it off, the Linköping team won. Really impressive was the ‘movie’ at Norrköping’s Visualiseringscenter, being the “cosmos 3D” interactive show narrated live by the centre’s director Prof. Anders Ynnerman. We were treated on a trip through space—navigating from the ISS to the outer boundary of the universe—that was all based on current data and scientific evidence. This was followed by a walk-and-play-around in the rest of the centre, and a tasty dinner where Patrick made a fun story out of the talking frog joke. As per usual, it was also a great opportunity to meet colleagues again, discuss, and plan follow-up research, as well as meeting new people and finally meeting others in person whom I only knew by papers. The next EKAW will be in 2016 Bologna, Italy (statistically less cold and dark than here, though the lights have their charm).
(note: in time, people will have their papers on their home pages; for now, most links are to the Springer version)
 I.F. Cruz, F. Loprete, M. Palmonari, C. Stroe and A. Taheri. Pay-As-You-Go Multi-user Feedback Model for Ontology Matching. EKAW’14. Springer LNAI 8876, 80-96.
 F. Hanika, G. Wohlgenannt and M. Sabou. The uComp Protégé Plugin: Crowdsourcing Enabled Ontology Engineering. EKAW’14. Springer LNAI 8876, 181-196.
 F. Osborne and E. Motta. Inferring Semantic Relations by User Feedback. EKAW’14. Springer LNAI 8876, 339-355.
 V. Presutti, S. Consoli, A.G. Nuzzolese, D.R. Recupero, A. Gangemi, I. Bannour and H. Zargayouna. Uncovering the Semantics of Wikipedia Pagelinks. EKAW’14. Springer LNAI 8876, 413-428.
 K. Hammar. Ontology Design Pattern Property Specialisation Strategies. EKAW’14. Springer LNAI 8876, 165-180
 V.K. Chaudhri, R. Katragadda, J. Shrager and M. Wessel. Inconsistency Monitoring in a Large Scientific Knowledge Base. EKAW’14. Springer LNAI 8876, 66-79
 M. Solanki and C. Brewster. A Knowledge Driven Approach towards the Validation of Externally Acquired Traceability Datasets in Supply Chain Business Processes. EKAW’14. Springer LNAI 8876, 503-518.
 V. Zamborlini, R. Hoekstra, M. da Silveira, C. Pruski, A. ten Teije and F. van Harmelen. A Conceptual Model for Detecting Interactions among Medical Recommendations in Clinical Guidelines: A Case-Study on Multimorbidity. EKAW’14. Springer LNAI 8876, 591-606.
 V.K. Chaudhri, P.E. Clark, A. Overholtzer and A. Spaulding. Question Generation from a Knowledge Base. EKAW’14. Springer LNAI 8876, 54-65
 P. Minervini, C. d’Amato, N. Fanizzi and F. Esposito. Adaptive Knowledge Propagation in Web Ontologies. EKAW’14. Springer LNAI 8876, 304-319.