scholarly journals Corpus-based dictionaries for sentiment analysis of specialized vocabularies

Author(s):  
Douglas R. Rice ◽  
Christopher Zorn

AbstractContemporary dictionary-based approaches to sentiment analysis exhibit serious validity problems when applied to specialized vocabularies, but human-coded dictionaries for such applications are often labor-intensive and inefficient to develop. We demonstrate the validity of “minimally-supervised” approaches for the creation of a sentiment dictionary from a corpus of text drawn from a specialized vocabulary. We demonstrate the validity of this approach in estimating sentiment from texts in a large-scale benchmarking dataset recently introduced in computational linguistics, and demonstrate the improvements in accuracy of our approach over well-known standard (nonspecialized) sentiment dictionaries. Finally, we show the usefulness of our approach in an application to the specialized language used in US federal appellate court decisions.

1994 ◽  
Vol 29 (3) ◽  
pp. 281-288 ◽  
Author(s):  
A. Siepe

The floodplain of the Upper Rhine and its biocoenoses have, through different river-regulatory activities over the last 175 years, undergone large scale degradation. At the same time flood protection for the downstream inhabitants has been greatly reduced. For reasons of flood protection, the “Polder Altenheim” in Baden-Württemberg, Germany southwest of Strasbourg, France, with so called retention flooding, was put into operation in 1987. The original floodplain had been diked for the previous 17 years, during which no flooding occurred. Since 1989 “ecological flooding” also is carried out. This has assisted in the regeneration of floodplain biotopes and promoted the floodplain biotic communities and the readaption of the bioceonosis to a regular flooding regime. The creation of new floodplain biotopes of early succession stages, particularly through geomorphodynamic processes, has followed the more than ten flood ocassions and typical biotic communities have colonised these sites. This will be presented together with selected examples of terrestrial and limnical species and communities. The following species and communities will be discussed: kingfisher Alcedo atthis, carabid communities (Coleoptera), the red alga Hildenbrandia rivularis (Rhodophyceae), the freshwater snail Theodoxus fluviatilis (Neritacea) and the freshwater bug Aphelocheirus aestivalis (Hydrocorisae).


2021 ◽  
Vol 62 ◽  
pp. 142-157
Author(s):  
James Rogers ◽  
Amanda Müller ◽  
Frank E. Daulton ◽  
Paul Dickinson ◽  
Cosmin Florescu ◽  
...  
Keyword(s):  

2021 ◽  
pp. 1-14
Author(s):  
Hamed Zargari ◽  
Morteza Zahedi ◽  
Marziea Rahimi

Words are one of the most essential elements of expressing sentiments in context although they are not the only ones. Also, syntactic relationships between words, morphology, punctuation, and linguistic phenomena are influential. Merely considering the concept of words as isolated phenomena causes a lot of mistakes in sentiment analysis systems. So far, a large amount of research has been conducted on generating sentiment dictionaries containing only sentiment words. A number of these dictionaries have addressed the role of combinations of sentiment words, negators, and intensifiers, while almost none of them considered the heterogeneous effect of the occurrence of multiple linguistic phenomena in sentiment compounds. Regarding the weaknesses of the existing sentiment dictionaries, in addressing the heterogeneous effect of the occurrence of multiple intensifiers, this research presents a sentiment dictionary based on the analysis of sentiment compounds including sentiment words, negators, and intensifiers by considering the multiple intensifiers relative to the sentiment word and assigning a location-based coefficient to the intensifier, which increases the covered sentiment phrase in the dictionary, and enhanced efficiency of proposed dictionary-based sentiment analysis methods up to 7% compared to the latest methods.


Author(s):  
Usman Naseem ◽  
Imran Razzak ◽  
Matloob Khushi ◽  
Peter W. Eklund ◽  
Jinman Kim

Symmetry ◽  
2019 ◽  
Vol 11 (1) ◽  
pp. 115 ◽  
Author(s):  
Yaocheng Zhang ◽  
Wei Ren ◽  
Tianqing Zhu ◽  
Ehoche Faith

The development of mobile internet has led to a massive amount of data being generated from mobile devices daily, which has become a source for analyzing human behavior and trends in public sentiment. In this paper, we build a system called MoSa (Mobile Sentiment analysis) to analyze this data. In this system, sentiment analysis is used to analyze news comments on the THAAD (Terminal High Altitude Area Defense) event from Toutiao by employing algorithms to calculate the sentiment value of the comment. This paper is based on HowNet; after the comparison of different sentiment dictionaries, we discover that the method proposed in this paper, which use a mixed sentiment dictionary, has a higher accuracy rate in its analysis of comment sentiment tendency. We then statistically analyze the relevant attributes of the comments and their sentiment values and discover that the standard deviation of the comments’ sentiment value can quickly reflect sentiment changes among the public. Besides that, we also derive some special models from the data that can reflect some specific characteristics. We find that the intrinsic characteristics of situational awareness have implicit symmetry. By using our system, people can obtain some practical results to guide interaction design in applications including mobile Internet, social networks, and blockchain based crowdsourcing.


2017 ◽  
Vol 6 (1) ◽  
Author(s):  
Andrew J Reagan ◽  
Christopher M Danforth ◽  
Brian Tivnan ◽  
Jake Ryland Williams ◽  
Peter Sheridan Dodds

2021 ◽  
Vol 30 (2) ◽  
pp. 149-179
Author(s):  
Andrey Vershinin

The article examines the issue of exercising the freedom of association in political parties in Russia in a comparative analysis with the leading democratic countries of the world. Modern democracies cannot be imagined without political parties, which are the representors of the interests of their voters in legislative bodies and local government bodies. The development of civil society and the entire political system in the country depends on how the freedom of association in political parties and the access of parties to participate in elections is realized. The development of legislation on political parties in the Russian Federation proceeded unevenly. In the first years after the adoption of the Constitution the legislative body did not introduce strict requirements for parties. The adoption of a special federal law on political parties in 2001 became a turning point in the development of the party system. The author identifies two large blocks of restrictions on the creation of parties. The first is legislative restrictions, the second is the restrictions that arise from the unfair activities of legislative and law enforcement agencies. In this work, legislative restrictions are compared with restrictions in other democracies, as well as based on legal positions developed by the European Court of Human Rights. The author comes to the opinion that some restrictions on the creation of parties are not necessary now, in the meantime they significantly narrow the possibilities of party creation and political competition. First, we are talking about a ban on the creation of regional parties. The Constitutional Court in its legal positions indicated that this restriction is temporary and will be lifted over time. Within the framework of this work, the author will give suggestions on changing the approach to the creation of political parties in Russia, which should affect the emergence of new strong parties at different levels of public authority. The author believes that a system of “controlled multiparty system” has developed in Russia, which is implemented both in changing the legislation on political parties based on the interests of the “party in power” and the practice of the registration body, which prevents the formation of new parties claiming to redistribute the existing distribution of forces. Based on the analysis of the legislation on political parties, law enforcement practice, decisions of the Constitutional Court of the Russian Federation, the ECHR and the legislation of foreign countries, the author proposes approaches to reforming the existing party system, which include small cosmetic changes and large-scale changes in approaches to the creation of parties.


Author(s):  
Alice Taylor

The underlying rationale for prohibiting discrimination continues to be subject to significant debate. This debate leads to a lack of clarity with respect to the kinds of harms anti-discrimination law is designed to prevent and the kinds of behaviours it is designed to capture. A frequent criticism of the Australian courts’ approach to discrimination law is that it fails to grapple with the underlying purpose of anti-discrimination law. The consequence of this failure is a jurisprudence that is underdeveloped. This paper makes a different argument. This article argues that the Australian courts can and do give a purposive interpretation to anti-discrimination law but the purpose that the courts draw on lacks an underpinning coherence or consistency. This paper will make this argument by considering three recent Australian appellate court decisions on disability discrimination to consider the different ways in which the court exhibits an understanding of the purpose of anti-discrimination law.


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