نتایج جستجو برای: semantic orientation

تعداد نتایج: 208878  

2011
Cheng-Ru Li Chi-Hsin Yu Hsin-Hsi Chen

The semantic orientation of terms is fundamental for sentiment analysis in sentence and document levels. Although some Chinese sentiment dictionaries are available, how to predict the orientation of terms automatically is still important. In this paper, we predict the semantic orientation of terms of E-HowNet. We extract many useful features from different sources to represent a Chinese term in...

Journal: :Procesamiento del Lenguaje Natural 2009
Fermín L. Cruz José Antonio Troyano Jiménez F. Javier Ortega Carlos G. Vallejo

In this paper we explain the building of an English lexicon of adjectives and their semantic orientations. Rather than defining the semantic orientation of a term as a single value, we induce many real values representing the semantic orientation of that term being used in different domains. The automatic building of this resource has been based on the construction of graphs from conjunctive ex...

ژورنال: اعتیاد پژوهی 2022

Objective: The present research aimed to discover the semantic system of addiction from the perspective of marijuana users. Method: The research method was grounded theory in which semi-structured interviews were conducted with 20 young people in the city of Rasht who had a history of marijuana use, and the data were collected by theoretical-purposive sampling and analyzed with open, axial, and...

Journal: :Journal of experimental psychology. Human perception and performance 1997
G W Humphreys M Boucart

Whether attention to a local part of a visual display can prevent access to semantic information in form matching tasks with objects was studied. A first picture containing a line segment (the reference) was followed by 2 lateral objects also containing a line segment (a target and a distractor). Participants matched the line segments according to either their orientation or color. Effects of s...

2004
Hugh Glaser Harith Alani Les Carr Sam Chapman Fabio Ciravegna Alexiei Dingli Nicholas Gibbins Stephen Harris Monica M. C. Schraefel Nigel Shadbolt

In this paper we reflect on the lessons learned from deploying the award winning [1] Semantic Web application, CS AKTiveSpace. We look at issues in service orientation and modularisation, harvesting, and interaction design for supporting this 10million-triple-based application. We consider next steps for the application, based on these lessons, and propose a strategy for expanding and improving...

Journal: :Neuropsychologia 2004
D Pins M E Meyer J Foucher G Humphreys M Boucart

The present study sought to assess neural correlates of implicit identification of objects by means of fMRI, using tasks that require matching of the physical properties of objects. Behavioural data suggests that there is automatic access to object identity when observers attend to a physical property of the form of an object (e.g. the object's orientation) and no evidence for semantic processi...

2006
Hiroya Takamura Takashi Inui Manabu Okumura

We propose models for semantic orientations of phrases as well as classification methods based on the models. Although each phrase consists of multiple words, the semantic orientation of the phrase is not a mere sum of the orientations of the component words. Some words can invert the orientation. In order to capture the property of such phrases, we introduce latent variables into the models. T...

2011
Fermín L. Cruz José Antonio Troyano Jiménez F. Javier Ortega Fernando Enríquez

In most tasks related to opinion mining and sentiment analysis, it is necessary to compute the semantic orientation (i.e., positive or negative evaluative implications) of certain opinion expressions. Recent works suggest that semantic orientation depends on application domains. Moreover, we think that semantic orientation depends on the specific targets (features) that an opinion is applied to...

2006
Maite Taboada Caroline Anthony Kimberly D. Voll

We describe and compare different methods for creating a dictionary of words with their corresponding semantic orientation (SO). We tested how well different dictionaries helped determine the SO of entire texts. To extract SO for each individual word, we used a common method based on pointwise mutual information. Mutual information between a set of seed words and the target words was calculated...

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