排序方式： 共有17条查询结果，搜索用时 15 毫秒
1.
Edgardo Ferretti Leticia Cagnina Viviana Paiz Sebastián Delle Donne Rodrigo Zacagnini Marcelo Errecalde 《Information processing & management》2018,54(6):1169-1181
In this work, we present the first quality flaw prediction study for articles containing the two most frequent verifiability flaws in Spanish Wikipedia: articles which do not cite any references or sources at all (denominated Unreferenced) and articles that need additional citations for verification (so-called Refimprove). Based on the underlying characteristics of each flaw, different state-of-the-art approaches were evaluated. For articles not citing any references, a well-established rule-based approach was evaluated and interesting findings show that some of them suffer from Refimprove flaw instead. Likewise, for articles that need additional citations for verification, the well-known PU learning and one-class classification approaches were evaluated. Besides, new methods were compared and a new feature was also proposed to model this latter flaw. The results showed that new methods such as under-bagged decision trees with sum or majority voting rules, biased-SVM, and centroid-based balanced SVM, perform best in comparison with the ones previously published. 相似文献
2.
Ojeda-Romano Gabriela Fernández-Marcial Viviana Wilkinson Clare Stengler A. Erik 《Higher Education》2022,84(4):801-825
As key elements in research and development systems, higher education institutions have been taking a leading role when it comes to communicating science and technology, but their performance has been inconsistent so far. In this critical and comparative study of the UK public engagement model and the Spanish scientific culture model, eighteen practitioners from higher education institutions across both regions were interviewed. A mixed qualitative data analysis has been performed identifying similarities and differences that unravelled the science communication management model in the two different higher education systems. This article provides evidence on how the institutionalisation of science communication is strongly influenced by key driving forces in the higher education context as well as the policies of administrations and other agents.
相似文献3.
Valenzuela Viviana Aisenson Gabriela Duarte Maria Eduarda 《International Journal for Educational and Vocational Guidance》2022,22(3):689-711
International Journal for Educational and Vocational Guidance - This article presents results of a study examining the experience of a group of socially vulnerable teenagers integrated into a... 相似文献
4.
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
5.
Lina Viviana Melo-Niño Florentina Cañada Vicente Mellado 《Research in Science Education》2017,47(1):25-48
We explore the initial characterization of the pedagogical content knowledge of four, in-service, Colombian pre-university secondary education physics teachers on the concept of electric field. Two of them teach the content in English as a second language. The aim of the study was to obtain an image of the participants’ teaching of electric field and the inherent complexities that go with that. The results revealed that factors which involved their personal educational models, such as, how they interpret their school’s curriculum, the relationship they see between physics and mathematics, the most effective strategies for teaching physics, and the time they have available to develop the topic played a significant role. The teachers considered it essential to establish new strategies that would motivate the pupils by helping them visualize the electric field. 相似文献
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Aisenson Gabriela Legaspi Leandro Pablo María Valenzuela Viviana Czerniuk Renee Miguelez Violeta Vicente Moulia Lourdes Larriba Gerardo Solano Lila Alonso Diego Eduardo 《International Journal for Educational and Vocational Guidance》2022,22(3):739-758
International Journal for Educational and Vocational Guidance - This article presents results of an investigation that explored the school pathways of young Argentine unskilled workers without a... 相似文献
8.
M. Francisca del Río Maria Ines Susperreguy Katherine Strasser Viviana Salinas 《Early education and development》2017,28(8):939-955
The current study analyzed maternal and paternal differential influences on numeracy performance in kindergarten children. Participants were 180 Chilean children from backgrounds of low and high socioeconomic status (SES), their mothers, and their fathers. A path analysis was used to explore the influences of both maternal and paternal numeracy practices on children’s numeracy performance and the influences of maternal and paternal expectations and anxiety on those activities. Research Findings: Results showed that mothers and fathers who endorse higher numeracy expectations for their children and who report lower levels of math anxiety also report engaging more frequently in advanced numeracy practices with their children. Mothers’—but not fathers’—engagement in numeracy practices at home predicted children’s numeracy performance. Also, low-SES mothers engaged more frequently in numeracy practices with their children, and mothers in general engaged more often in numeracy activities with girls than with boys. Practice or Policy: These findings improve understanding of how maternal and paternal processes relate differently to numeracy performance in kindergarten children. Moreover, these results highlight the need to take into account parents’ numeracy attitudes and practices, as well as their SES, when designing interventions directed at increasing family support for math achievement. 相似文献
9.
Caputo Andrea Fregonese Chiara Langher Viviana 《International Journal for Educational and Vocational Guidance》2020,20(2):263-292
International Journal for Educational and Vocational Guidance - The purpose of this research was to develop and validate a new instrument, the Dynamic Career Scale (DCS), which measures four... 相似文献
10.
Beth Herbel-Eisenmann David Wagner Viviana Cortes 《Educational Studies in Mathematics》2010,75(1):23-42
In this article, we introduce the lexical bundle, defined by corpus linguists as a group of three or more words that frequently
recur together, in a single group, in a particular register (Biber, Johansson, Leech, Conrad, & Finegan, 2006; Cortes, English for Specific Purposes 23:397–423, 2004). Attention to lexical bundles helps to explore hegemonic practices in mathematics classrooms because lexical bundles play
an important role in structuring discourse and are often treated as “common sense” ways of interacting. We narrow our findings
and discussion to a particular type of lexical bundle (called a “stance bundle” or bundles that relate to feelings, attitudes,
value judgments, or assessments) because it was the most significant type found. Through comparing our corpus from secondary
mathematics classrooms with two other corpora (one from university classrooms (not including mathematics classrooms) and one
from conversations), we show that most of the stance bundles were particular to secondary mathematics classrooms. The stance
bundles are interpreted through the lens of interpersonal positioning, drawing on ideas from systemic functional linguistics.
We conclude by suggesting additional research that might be done, discussing limitations of this work, and pointing out that
the findings warrant further attention to interpersonal positioning in mathematics classrooms. 相似文献