Spoken Language Systems Lab


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L²F - INESC ID Lisboa

INESC ID's Spoken Language Systems Laboratory (L²F - Laboratório de sistemas de Língua Falada) was created in January 2001, bringing together several research groups which could potentially add relevant contributions to the area of computational processing of spoken language for Portuguese. The lab is integrated in the research unit of Interactive Intelligent Systems.

Gopala`s PhD thesis work


PT original (ASR+SMT subtitles)



More demos from L2F on YouTube: S2S translation VITHEA 3D office PT-STAR

Next events:

July 22nd, 2013 (Monday, 15h, room 020)
Liang Tian will present Word alignment based on Maximum Matching Method.

The 3rd Lisbon Machine Learning School - LxMLS 2013 will take place July 24th-31st at Instituto Superior Técnico. It is organized jointly by IST, the Instituto de Telecomunicações and the Spoken Language Systems Lab – L2F of INESC-ID.

July 30th, 2013 (Tuesday, 15:00)
Rui Correia will present his thesis proposal.

July 31st (Wednesday, 14:00)
Gopala Krishna Anumanchipalli will defend his PhD thesis.

Past events:

July 19th, 2013 (Friday, 15h, room 020)
Ahmed Hussen Abdelaziz presented Coupling Pattern Recognition and Signal Processing.

July 19th, 2013 (Friday, 14h, room 020)
Samer Al Moubayed presented Situated and embodied dialogues with the Furhat human-like robot head.

July 16th, 2013 (Tuesday, 15:00, IST Alameda)
Wang Ling presented his thesis proposal entitled Machine Translation in Microblogs

June 24th, 2013 (Monday, 14:30, IST Alameda)
Steve Young presented Spoken Dialogue Systems: Progress and Challenges

April 17th, 2013 (Wednesday, 10:00, IST Alameda)
Gerrit Bloothooft presented Named-entity recognition in the past

Participation in Conferences:

Dec 8-15, 2012
Luís Marujo and Wang Ling attended COLING 2012, the 24th International Conference on Computational Linguistics, in Mumbai, India.

Dec 2-5, 2012
João Miranda and Gopala Krishna Anumanchipalli attended SLT 2012, the 2012 IEEE Spoken Language Technology Workshop, in Miami, USA.

Oct 29-Nov 2, 2012
Paula Cristina Vaz attended CIKM 2012, the 21st ACM International Conference on Information and Knowledge Management, in Maui, USA.

Aug 4-9, 2013
Luísa Coheur attended ACL 2013.

New Master Theses Themes at L2F (2013/14)

Scientific Award - Fernando Batista was one the winners of the 2013 edition of the ISCTE-IUL scientific awards with the work "Bilingual Experiments on Automatic Recovery of Capitalization and Punctuation of Automatic Speech Transcripts" published in the IEEE Transactions on Audio, Speech, and Language Processing.

Alberto Abad Gareta and Anna Pompili have received a prize for their work on project VITHEA (Virtual Therapist for Aphasia treatment). Vithea.png

Fernando Batista and Ricardo Ribeiro took part in a experimental evaluation campaign on sentiment analysis based on short text opinions extracted from social media messages in the context of TASS - Workshop on Sentiment Analysis at SEPLN (satellite event of the SEPLN 2012 conference). The obtained results ranked them in
- 1st. place in "Trending topic coverage";
- 2nd. place in "Sentiment Analysis".

Scientific Award - Ricardo Ribeiro was one the winners of the 2012 edition of the ISCTE-IUL scientific awards with the work "Revisiting Centrality-as-Relevance: Support Sets and Similarity as Geometric Proximity" published in the Journal of Artificial Intelligence Research.

IEEE Fellow - Prof. Isabel Trancoso The Institute of Electrical and Electronics Engineers, IEEE, appointed Prof. Isabel Trancoso as a Fellow of this prestigious institution.

Research Opportunities - The Spoken Language Systems Lab is looking for students interested in pursuing a PhD in Language Technologies. Post-Doc positions are also open. The typical PhD program in our lab is held in cooperation with international Universities.

Voice Interaction

VoiceInteraction S.A. is a technology based company born in April 2008 as a spin-off from INESC-ID Lisboa. Its primary goal is to develop speech processing technologies. VoiceInteraction team is composed by researchers coming from INESC-ID Lisboa Spoken Language Systems Lab (L2F/INESC-ID) that have worked in the TECNOVOZ project (ADI/PRIME/03/165 - 2006/2008).