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A joint learning approach with knowledge injection for zero-shot cross-lingual hate speech detection
Endang Wahyu Pamungkas Valerio Basile Viviana Patti 《Information processing & management》2021,58(4):102544
Hate speech is an increasingly important societal issue in the era of digital communication. Hateful expressions often make use of figurative language and, although they represent, in some sense, the dark side of language, they are also often prime examples of creative use of language. While hate speech is a global phenomenon, current studies on automatic hate speech detection are typically framed in a monolingual setting. In this work, we explore hate speech detection in low-resource languages by transferring knowledge from a resource-rich language, English, in a zero-shot learning fashion. We experiment with traditional and recent neural architectures, and propose two joint-learning models, using different multilingual language representations to transfer knowledge between pairs of languages. We also evaluate the impact of additional knowledge in our experiment, by incorporating information from a multilingual lexicon of abusive words. The results show that our joint-learning models achieve the best performance on most languages. However, a simple approach that uses machine translation and a pre-trained English language model achieves a robust performance. In contrast, Multilingual BERT fails to obtain a good performance in cross-lingual hate speech detection. We also experimentally found that the external knowledge from a multilingual abusive lexicon is able to improve the models’ performance, specifically in detecting the positive class. The results of our experimental evaluation highlight a number of challenges and issues in this particular task. One of the main challenges is related to the issue of current benchmarks for hate speech detection, in particular how bias related to the topical focus in the datasets influences the classification performance. The insufficient ability of current multilingual language models to transfer knowledge between languages in the specific hate speech detection task also remain an open problem. However, our experimental evaluation and our qualitative analysis show how the explicit integration of linguistic knowledge from a structured abusive language lexicon helps to alleviate this issue. 相似文献
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Germano Lambert-Torres Carlos Henrique Valerio de Moraes Maurilio Pereira Coutinho Helga Gonzaga Martins Luiz Eduardo Borges da Silva 《European Journal of Engineering Education》2017,42(6):1296-1308
This paper describes a non-classical logic course primarily indicated for graduate students in electrical engineering and energy engineering. The content of this course is based on the vision that it is not enough for a student to indefinitely accumulate knowledge; it is necessary to explore all the occasions to update, deepen, and enrich that knowledge, adapting it to a complex world. Therefore, this course is not tied to theoretical formalities and tries at each moment to provide a practical view of the non-classical logic. In the real world, the inconsistencies are important and cannot be ignored because contradictory information brings relevant facts, sometimes modifying the entire result of the analysis. As consequence, the non-classical logics, such as annotated paraconsistent logic – APL, are efficiently framed in the approach of complex situations of the real world. In APL, the concepts of unknown, partial, ambiguous, and inconsistent knowledge are referred not to trivialise any system in analysis. This course presents theoretical and applicable aspects of APL, which are successfully used in decision-making structures. The course is divided into modules: Basic, 2vAPL, 3vAPL, 4vAPL, and Final Project. 相似文献
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Although recent research has highlighted that lesbian, gay, bisexual and transgender (LGBT) youths represent a resilient population, they still suffer from social stigma and oppression, being potentially at additional risk of developing negative mental health outcomes. One of the main environments where violence and harassment against this population are present is the school. Within school contexts, the impact that teachers can have on the educational experiences of LGBT youths seems to be a crucial point. This paper explored sexist, homophobic and transphobic attitudes among 438 pre-service teachers in relation to specific socio-demographic features. Results indicated that being male, heterosexual, conservative and currently religious were positively associated with sexist, homophobic, and transphobic attitudes and feelings, and having a LGBT friend was negatively associated with homophobic and transphobic attitudes and feelings. These results suggest the need to introduce specific training on the deconstruction of gender and sexual stereotypes and prejudices, to provide teachers with efficient tools to address diversity in the classrooms and to implement inclusive school policies. Suggestions for the implementation of good practices are provided. 相似文献
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Career progress in centralized academic systems: Social capital and institutions in France and Italy
We analyze the role of social capital in academic careers. We distinguish between ties with reputed scientists and laboratories (scientific and technical human capital) and ties with influential actors with respect to recruitment/promotion decisions (political capital). We use institution-wise bibliometric indicators to measure separately the two types of capital for a large sample of French and Italian academic physicists between 2000 and 2003/2005. Controlling for scientific productivity, seniority and gender issues, career progress is explained by: the scientist's affiliation to important public research organizations (scientific and technical human capital - France); his/her social ties with senior members of the discipline, who exercise control over careers (political capital - Italy), and the commitment to work with senior colleagues in his/her own university (political capital - Italy). Significant differences exist between the two countries also with respect to the importance of productivity, seniority, and gender. 相似文献
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Valerio Grementieri 《Higher Education in Europe》1998,23(2):169-175
Information technology gives precedence to the act of learning instead of to the arbitrary transfer of knowledge from teacher to learner. It has established a new educational paradigm that finally gives meaning to the human relationship with information. Just as people are finally beginning to think about basic ecological training or about the teaching of environmental friendliness, they need to plan ahead for mental ecology training, taken as the ability to maintain some sort of mental order when exposed to the chaos of the “multimedia” world. Computers, television, and multimedia exist and are increasingly becoming the preferred means of communication. Being able to understand and to control them and to use them thus becomes a basic right of all citizens and workers. 相似文献
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Lang H Stinson M Kavanagh F Liu Y Basile M 《Journal of deaf studies and deaf education》1999,4(1):16-27
Six learning style dimensions of the Grasha-Riechmann Student Learning Style Scales (GRSLSS) were examined in this study with 100 deaf college students. In addition, six corresponding scales of teaching emphases were administered to the 16 instructors of these students. Student mean scores were higher for the dependent, participative, collaborative, and independent dimensions than for the competitive and avoidant styles. The participative learning style correlated significantly with course achievement and course interest, which suggests that an emphasis on active learning may be desirable. For instructors, as with students, the mean scores for teaching emphases were found to be higher for the collaborative, dependent, participative, and independent dimensions. the similar patterns of results for students and teachers suggest a correspondence between the learning styles and the teaching emphases. 相似文献
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