Richard Khoury

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Identifying the intended topic that underlies a user’s query can benefit a large range of applications, from search engines to question-answering systems. However, query classification remains a difficult challenge due to the variety of queries a user can ask, the wide range of topics users can ask about, and the limited amount of information that can be(More)
In recent years, the free online encyclopaedia Wikipedia has become a standard resource to exploit to build knowledge base for various Natural Language Processing applications. In this paper, we exploit that resource to design a new query classification system. We explain and justify the steps we take to extract information from Wikipedia into a structured(More)
Molecular strands composed of alternating 2,6-diaminopyridine and 2,6-pyridinedicarbonyl units have been designed to self-organize into single stranded helical structures upon forming intramolecular hydrogen bonds. Pentameric strands 11, 12, and 14, heptameric strands 1 and 20, and undecameric strand 15 have been synthesized using stepwise convergent(More)
Recommendation Services (RS) are an essential part of online marketing campaigns. They make it possible to automatically suggest advertisements and promotions that fit the interests of individual users. Social networking websites, and the Web 2.0 in general, offer a collaborative online platform where users socialize, interact and discuss topics of interest(More)
The challenge of sentiment analysis consists in automatically determining whether a text is positive or negative in tone. Part of the difficulty in this task stems from the fact that the same words or sentences can have very different sentimental meaning given their context. In our work, we further focus on news articles, which tend to use a more neutral(More)
The condensation of the two oligoheterocyclic aldehydes 8 and 16 with the bis-hydrazine 17 gives the bis-hydrazones 1 and 2. These molecular strands are shown to adopt helical conformations of 1.5 and 2.5 turns, respectively. The helical shape of 1 has been confirmed and structurally characterized by X-ray crystallography. The results indicate that the(More)
— This paper describes the joint submission by Laval University and Lakehead University to the TREC 2015 Dynamic Domain track. We submitted four runs for the main track and one run for the judged-only track. In our view, the Dynamic Domain process can be separated into two phases: a traditional static information retrieval phase to generate an initial set(More)
  • Richard Khoury
  • The 3rd Canadian Conference on Computer and Robot…
  • 2006
This study deals with the design of an enhanced selfreferencing algorithm for a typical hand-held 3D sensor. The enhancement we propose takes the form of a new algorithm which forms and matches triangles out of the scatter of observed reference points and the sensor’s list of reference points. Three different techniques to select which triangles to(More)