L2F is actively involved in many areas of spoken language research and development, including speech recognition, speech synthesis, speech coding, speech understanding, audio indexation, multimodal dialogue systems, language and dialect identification, and speech-to-speech machine translation, among others. By bringing together researchers from the area of natural language processing, the lab acquired expertise in areas such as natural language database interfaces, natural language generation, alternative syntactic and semantic processing paradigms, summarization, named entity retrieval, question answering, etc., which are also extremely relevant to the development of spoken language systems.
The expertise in these core technologies is integrated into 3 main research strands: semantic processing of multimedia contents, spoken/multimodal dialogue systems and speech-to-speech translation. The original focus on European Portuguese has now been broadened to encompass all varieties of Portuguese. Two application areas also deserve our special attention: e-learning and e-inclusion, namely in the development of alternative and augmentative communication tools for people with special needs.