th TSD 2009was the 12 eventin the series of InternationalConferenceson Text, Speech andDialoguesupportedbytheInternationalSpeechCommunicationAssociation(ISCA) ? and Czech Society for Cybernetics and Informatics (CSKI). This year, TSD was held in Plzen ? (Pilsen), in the Primavera Conference Center, during September 13-17, 2009 and it was organized by the University of West Bohemia in Plzen ? in cooperation with Masaryk University of Brno, Czech Republic. Like its predecessors, TSD 2009 hi- lighted to both the academic and scienti?c world the importance of text and speech processing and its most recent breakthroughsin current applications. Both experienced researchers and professionals as well as newcomers to the text and speech processing ?eld, interested in designing or evaluating interactive software, developing new int- action technologies, or investigatingoverarchingtheories of text and speech processing found in the TSD conference a forum to communicate with people sharing similar - terests. The conference is an interdisciplinary forum, intertwining research in speech and language processing with its applications in everyday practice. We feel that the mixture of different approaches and applications offered a great opportunity to get - quaintedwith currentactivitiesin all aspects oflanguagecommunicationand to witness the amazing vitality of researchers from developing countries too. This year's conference was partially oriented toward semantic processing, which was chosen as the main topic of the conference. All invited speakers (Frederick Jelinek, Louise Guthrie, Roberto Pieraccini, Tilman Becker, and Elmar Not .. h) gave lectures on thenewestresultsintherelativelybroadandstillunexploredareaofsemanticprocessing.