A Plan-Based Model for Response Generation in Collaborative Task-Oriented Dialogues

This paper presents a plan-based architecture for response generation in collaborative consultation dialogues, with emphasis on cases in which the system (consultant) and user (executing agent) disagree. Our work contributes to an overall system for collaborative problem-solving by providing a plan-based framework that captures the {\em Propose-Evaluate-Modify} cycle of collaboration, and by allowing the system to initiate subdialogues to negotiate proposed additions to the shared plan and to provide support for its claims. In addition, our system handles in a unified manner the negotiation of proposed domain actions, proposed problem-solving actions, and beliefs proposed by discourse actions. Furthermore, it captures cooperative responses within the collaborative framework and accounts for why questions are sometimes never answered.Comment: 8 pages, to appear in the Proceedings of AAAI-94. LaTeX source file, requires aaai.sty and epsf.tex. Figures included in separate file

Teaching practical theology: Implications for theological education with reference to Lonergan's theoretical framework

This paper argues that the effective teaching of theology is enhanced when the theological educator is aware of the educational implications of the task. The implementation of appropriate teaching-­learning strategies can facilitate student engagement and shift student horizons. Drawing on the work of Bernard Lonergan this paper explores the notion of teaching to promote a shift in students’ intellectual, moral and religious horizons. Lonergan’s thought and the student centred strategies of feminist theologian Rebecca Chopp are suggested as helpful approaches for teaching practical theology

Influence of Strings with Axionic Content on the Polarization of Extragalactic Sources

It is shown that the axion concentrated in electroweak strings which are consequently stabilized may produce a rotation of the polarization angle of radiation from extragalactic sources larger than that caused by a background field, and that axionic walls attached to global strings have an effect which depends on the frequency. We discuss the validity of the classical and quantum treatments of radiation and indicate that the latter produces conversion of linear into circular polarization. We describe possible anomalies in the observations which might suggest these influences of the axion.Comment: 11 pages, latex, no figure

Changing the rules at the drop of a hat: An ERP study of preschoolers\u27 set-shifting ability

We examined the neural correlates of set-shifting in 5-year-old children and examined whether the ease of switching was affected by varying the number of non-switch trials preceding a switch

Changing the rules at the drop of a hat: An ERP study of preschoolers\u27 set-shifting ability

We examined the neural correlates of set-shifting in 5-year-old children and examined whether the ease of switching was affected by varying the number of non-switch trials preceding a switch