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- W2099161509 abstract "This paper presents the evaluations of the field trials of two information inquiry systems that use different speech technologies and different human–machine interfaces. The first system, RAILTEL, uses isolated word recognition and system driven dialogue. The second system, Dialogos, understands spontaneous speech and implements a mixed initiative dialogue strategy. Both systems allow access to the Italian Railway timetable by using the telephone over the public network. RAILTEL and Dialogos were tested in extensive field trials by inexperienced subjects. Moreover, a comparative trial with a limited number of subjects was performed in order to gain some insights on the impact of the different speech technologies on users' behaviour. The paper will provide a brief description of the two systems, details of the experimental set up of the trials, and the discussion of the results. Ce papier présente les évaluations, sur des données d'exploitation (terrain), de deux serveurs d'information qui utilisent des technologies vocales et des interfaces homme–machine différentes. Le premier système, RAILTEL, utilise la reconnaissance de mots isolés et un dialogue contraint. Le second système, Dialogos, comprend la parole spontanée et implante une stratégie de dialogue avec initiative mixte. Les deux systèmes permettent l'accès à une base de données italienne d'horaires de trains à travers le réseau téléphonique publique. RAILTEL et Dialogos ont été testés par des utilisateurs non expérimentés dans de larges essais terrain. De plus, des essais comparatifs sur un nombre limité d'usagers ont été effectués afin d'évaluer l'impact des différentes technologies vocales sur le comportement des utilisateurs. Ce papier décrit brièvement les deux systèmes et plus en détail les protocoles expérimentaux. Les résultats des expériences sont discutés." @default.
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- W2099161509 title "Field trial evaluations of two different information inquiry systems" @default.
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- W2099161509 doi "https://doi.org/10.1016/s0167-6393(97)00041-1" @default.
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