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seminar

SEMINAR

Karin Hedberg will defend her MLT masters thesis.

The opponent is Resa Khezri and the examiner is Professor Lars Borin.

Date: 2016-09-29 10:30 - 12:00

Location: T340, FLoV, Olof Wijksgatan 6

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Abstract syntax trees are an alternative representation to syntactic structures commonly found in NLP systems. This representation allows for sharing of structures across languages, making it well suited to serve as a translation interlingua. Grammatical Framework is a grammar formalism that captures cross-linguistic generalizations through the use of abstract syntax. The Resource Grammar Library (GF-RGL) in GF implements multilingual grammars for over 30 languages.

Universal Dependencies (UDs) is a parallel effort to use shared structures to analyse sentences in different languages. The set of part-of-speech tags and functions are shared across languages. The linguistic data available from this project is annotated data i.e. sentences annotated with UD structures in over 40 languages.

The main contribution of this thesis is to bridge these two representations: despite the similar motivation behind these two efforts, the representations used vary significantly. Hence, we propose a conversion method to convert the abstract syntax trees in GF to the structures used in UD. We find that the correspondence between GF-RGL and UD is significant, and the differences between the two raise interesting questions about the level of abstraction. We also present practical applications to our method: (1) the use of GF parser as a dependency parser and (2) to bootstrap UD treebanks from GF treebanks.

Another topic addressed in this thesis is the problem of out-of-vocabulary words that comes up in symbolic systems. We address this problem in the context of part-of-speech tagging and statistical dependency parsing. We propose a simple method to use a distributional thesaurus to replace unknown words and show through empirical evaluation that our method improves both overall accuracies and accuracies for unknown words. Our method is generic and can be adapted to fit other NLP systems.

The discussion leader is Filip Ginter, University of Turku.

Date: 2016-09-15 10:00 - 12:00

Location: HC2, Hörsalsvägen 14

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SEMINAR

(This seminar will be held in Swedish.)

Som en specialinriktning inom logopedi görs undersökningar av språkfunktion hos personer med sviktande eller nedsatt mental förmåga. Kraven på metod är höga och det krävs god förmåga till observation av språkligt och kommunikativt beteende. Undersökningen aktualiseras när en person genomgår minnesutredning p.g.a. misstanke om demenssjukdom och den logopediska insatsen kan då vara en bit i ett stort pussel. På Karolinska Universitetssjukhuset har vi utvecklat och prövat testmetoder för att kunna beskriva patienters språkliga funktion och öka förståelsen av de besvär som patient och/eller omgivning noterat. Ett flertal vetenskapliga studier har genomförts och fördjupat kunskapen om språkliga funktioners samband med tänkande. Ett testbatteri (SLUM) har prövats på ett standardiserat sätt under fem års tid och är nu utvärderat. SLUM presenteras kort och med extra fokus på hur testresultat och observationer kan användas för att beskriva och påvisa avvikande språkligt beteende associerat med sjukdomsdiagnos. Eftersom ett specialintresse är semantik kommer detta vara i fokus.

Ing-Mari Tallberg [1,2]

  1. Funktionsområde Logopedi, Funktion Hälsoprofessioner, Karolinska Universitetssjukhuset, Stockholm, Sweden
  2. Enheten för Logopedi, (CLINTEC), Karolinska Institutet, Stockholm, Sweden

Date: 2016-10-06 10:30 - 12:00

Location: Lennart Torstenssonsgatan 8, L307

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SEMINAR

The Master's Programme in Language Technology welcomes you to the upcoming thesis defence:

13.00-14.30 Tessa Koelewijn. Thesis: ENTITY RELATION EXTRACTION. Exploring the Use of Coreference Resolution in a Distant Supervision Approach to Automated Relation Extraction
Examiner: Lars Borin
Supervisor: Richard Johansson
Opponent: Sophie Chesney

Date: 2016-06-14 13:00 - 14:30

Location: C430, Humanisten

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SEMINAR

The Master's Programme in Language Technology welcomes you to the upcoming thesis defences:

10.30-12.00 Wafia Adouane. Thesis: AUTOMATIC DETECTION OF UNDERRESOURCED LANGUAGES. Dialectal Arabic Short Texts
Examiner: Staffan Larsson
Supervisors: Richard Johansson, Nasredine Semmar and Alan Said (Recorded Future)
Opponent: Karin Hedberg

13.00-14.30 Sophie Chesney. Thesis: TF-REL: LINGUISTICALLY MOTIVATED TERM WEIGHTING . From Relevance to Keyword Extraction Examiner: Lars Borin
Supervisors: Simon Dobnik, Magnus Sahlgren
Opponent: Tessa Koelewijn

14.30-16.00 Stian Rødven Eide. Thesis: MEANINGFUL CONNECTIONS. On Prolog, Pengines and the Semantic Web Examiner: Staffan Larsson
Supervisors: Torbjörn Lager, Simon Dobnik
Opponent: Anna Ehrlemark

Date: 2016-06-13 10:30 - 16:00

Location: C430, Humanisten

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SEMINAR

The Master's Programme in Language Technology welcomes you to the upcoming thesis defences:

10.30-12.00 Anna Ehrlemark. Thesis: SEEK AND FIND. A retrieval approach to construction search
Examiner: Simon Dobnik
Supervisors: Richard Johansson, Benjamin Lyngfelt
Opponent: Wafia Adouane

13.00-14.30 Lorena Llozhi. Thesis: SWELL LIST. A list of productive vocabulary generated from second language learners' essays
Examiner: Benjamin Lyngfelt
Supervisors: Elena Volodina, Ildikó Pilán
Opponent: Erik de Graaf

14.30-16.00 Erik de Graaf. Thesis: KILLE . Learning Objects and Spatial Relations with Kinect
Examiner: Simon Dobnik
Supervisors: Richard Johansson
Opponent: Lorena Llozhi

Date: 2016-06-08 10:30 - 16:00

Location: C444, Humanisten

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SEMINAR

For more information and abstract, see here: http://clasp.gu.se/news-events/e/?eventId=3175157459

Date: 2016-06-16 15:15 - 17:00

Location: Seminar room, Dicksonsgatan 4

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SEMINAR

Recently headlines in newspapers have warned of the dangers of Artificial Intelligence (AI) to humanity. In this seminar, we will attempt to clarify some confusion and misunderstanding surrounding this by giving an update on the current state of the science and technology of AI. We will also highlight imminent threats to the general economy and society arising as consequences of pervasive automation.

Link to the event: https://www.chalmers.se/en/centres/GoCAS/Events/Pages/default.aspx

Date: 2016-05-11 15:00 - 17:00

Location: HA1, Hörsalsvägen 4

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SEMINAR

For more information and abstract, see here: http://clasp.gu.se/news-events/e/?eventId=3175156622

Date: 2016-05-12 15:15 - 17:00

Location: Seminar room, Dicksonsgatan 4

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SEMINAR

For more information and abstract, see here: http://clasp.gu.se/news-events/e/?eventId=3175156598

Date: 2016-05-04 15:15 - 17:00

Location: Seminar room, Dicksonsgatan 4

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