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Journals and Conferences
Data Set Used
The Carnegie Mellon Communicator system helps users create complex travel itineraries through a conversational interface. Itineraries consist of (multi-leg) flights, hotel and car reservations and are built from actual travel information for North America, obtained from the Web. The system manages dialog using a schema-based approach. Schemas correspond to… (More)
The two current approaches to language generation, template-based and rule-based (linguistic) NLG, have limitations when applied to spoken dialogue systems, in part because they were developed for text generation. In this paper, we propose a new corpus-based approach to natural language generation, specifically designed for spoken dialogue systems.
We present "look-to-talk", a gaze-aware interface for directing a spoken utterance to a software agent in a multi-user collaborative environment. Through a prototype and a Wizard-of-Oz (Woz) experiment, we show that "look-to-talk" is indeed a natural alternative to speech and other paradigms.
The Carnegie Mellon Communicator is a telephone-based dialog system that supports planning in a travel domain. The implementation of such a system requires two complimentary components, an architecture capable of managing interaction and the task, as well as a knowledge base that captures the speech, language and task characteristics specific to the domain.… (More)
On the Semantic Web, the types of resources and the semantic relationships between resources are defined in an ontology. By using that information, the accuracy of information retrieval can be improved. In this paper, we present effective ranking and search techniques considering the semantic relationships in an ontology. Our technique retrieves top-k… (More)
Systems for tracking faces using computer vision have recently become practical for human-computer interface applications. We are developing prototype systems for face-responsive interaction, exploring three different interface paradigms: direct manipulation, gazemediated agent dialog, and perceptually-driven remote presence. We consider the characteristics… (More)
The utility of vision-based face tracking for dual pointing tasks is evaluated. We first describe a 3-D face tracking technique based on real-time parametric motion-stereo, which is non-invasive, robust, and self-initialized. The tracker provides a real-time estimate of a “frontal face ray” whose intersection with the display surface plane is used as a… (More)
We propose a rapid prototyping method for discovering user-driven application opportunities for personal informatics. The key idea here is that our discovery is realized by empowering users themselves to figure out and express the meaningful information they want to capture and interpret through the prototypes we provide, in an economical and effective way.… (More)
We propose a generative model of a group EEG analysis, based on appropriate kernel assumptions on EEG data. We derive the variational inference update rule using various approximation techniques. The proposed model outperforms the current state-of-the-art algorithms in terms of common pattern extraction. The validity of the proposed model is tested on the… (More)