At an internship with Beth Sundheim at SPAWAR, I worked on
several
projects related to multi-lingual text processing and named entity
recognition, including a study derived from the TDT 2002 link detection
task, comparing the relative value of general lexical features,
temporal expressions, and named entities for the identification of
event-based topics, and comparing the published temporal expression
vector spaces to some I developed.
Lucien Carroll. 2005. Topic Detection Using Time
Expressions. Work carried out under the supervision of Beth
Sundheim,
as part of an internship with the SDSU Research
Foundation.
In collaboration with Erin
Stevenson and Rebecca
Colavin, I worked on developing a system to distinguish
degrees of bias in politically oriented websites, approaching it from
two directions: as a language classification problem, like
distinguishing subjective language from objective language; and as a
network partitioning problem, using position within the hyperlink
network to identify affiliation. We harvested the test corpus from the
internet, and hand-annotated the target classes. For the linguistic
approach we used standard machine learning methods with
linguistically-informed features, and for the network approach we used
mathematical methods from social network analysis.
Lucien Carroll, Erin
Stevenson, and Rebecca
Colavin.
2005. Website Bias Estimation with Combined Language Modeling and
Network Analysis. Work carried out under the supervision of Rob Malouf.
Presented by Erin at the 28th Linguistics Students Association
Colloquium at
SDSU, April 16, 2005. slides
other
slides
Hannah
Rohde, Rebecca
Colavin, Lara
Taylor and I worked on the problem
of semantic role labeling, as proposed in the CoNLL 2005 Shared Task.
We implemented a system that derived a wide variety of rule-based
syntactic and semantic features for the sentences in the CoNLL 2005
corpus, to train a conditional random fields model of the target series
of semantic role labels.
Hannah
Rohde, Lucien Carroll, Rebecca Colavin,
and Lara
Taylor. 2005. Head-Noun Proto-Properties for Semantic Role
Labeling. Part of an attempted entry in the CoNLL 2005 Shared Task,
under the supervision of Rob Malouf.
Presented by Hannah at the 28th Linguistics
Students Association Colloquium at SDSU, April 16, 2005.
slides