Conventional speech recognition systems are based on Gaussian hidden Markov models
(HMMs). Discriminative techniques such as log-linear modeling have been investigated in …

In this paper, we present improvements of our state-of-the-art concept tagger based on
conditional random fields. Statistical models have been optimized for three tasks of varying …

After a brief overview of voice portal technology, with special attention paid to Polish, we
discuss some aspects of user-centered design and its influence on usability of the proposed …

One of the primary uses for computer dialog systems is automated telephone services and
call centers. This paper explores the prospect of employing such a system in the call center …

We present a project of constructing an electronic dictionary of Polish urban proper names.
The dictionary describes inflection and variants of proper names and links them with city …

In the paper we present a method of automatic annotation of transliterated spontaneous
human-human dialogues on the level of domain attributes. It has been used for the …

In this paper, we present state-of-the art concept tagging results on a new corpus for Polish
SLU. For this language, it is the first large-scale corpus (~ 200 different concepts) which has …

In the paper we present the method of automatic recognition and annotation of proper
names which occur in dialogs gathered at the Warsaw city transportation information center …

This paper discusses the main aspects of the user-center design for developing a voice
portal and the impact it had while creating such a system in the Warsaw city transportation …

The paper concerns construction of the Polish spontaneous spoken dialogs corpus built
within the LUNA project. It elaborates on the process of collecting conversations, their …