SYSTEM DETERMINES THE SENTIMENT ORIENTA-WHAT COUNTRY DISREGARDS...
2008) system determines the sentiment orienta-
What country disregards the importance of the Kyoto
Protocol?
13
F
O
tion with two estimated language models for the
¿Por qué la guerra es negativa?
positive versus negative categories. The
What country is thought to have rejected the Kyoto
Protocol due to corruption?
14
F
O
QUANTA (Li, 2008) system detects the opinion
¿Por qué Bush se retiró del Protocolo de Kyoto?
What alternative environmental friendly resources do
holder, the object and the polarity of the opinion
people suggest to use instead of gas en the future?
O
15
F/
using a semantic labeler based on PropBank
3
and
¿Cuál fue la posición de EEUU sobre el Protocolo de
Kyoto?
some manually defined patterns.
Is Arnold Schwarzenegger pro or against the reduction
16
F/
of CO2 emissions?
Evaluation
¿Qué piensa Bush sobre el cambio climático?
What American politician supports the reduction of
CO2 emissions?
17
F
O
In order to carry out our evaluation, we em-
¿Qué impresión da Bush?
What improvements are proposed to the Kyoto Proto-
ployed a corpus of blog posts presented in
18
F/
col?
(Boldrini et al., 2009). It is a collection of blog
¿Qué piensa China del calentamiento global?
What is Bush accused of as far as political measures
entries in English, Spanish and Italian. However,
are concerned?
19
F/
for this research we used the first two languages.
¿Cuál es la opinión de Rusia sobre el Protocolo de
We annotated it using EmotiBlog (Balahur et al.,
What initiative of an international body is thought to be