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9 results on '"Okorafor, Ekpe"'

1. Recommender Systems

Author

Okorafor, Ekpe

Subjects
Machine Learning, Recommender systems
Abstract

Description of recommender systems in 2019 CODATA-RDA Research Data Science School in Trieste, Italy

Published
2019
Full Text
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2. A curriculum for foundational Research Data Science skills for Early Career Researchers

Author

Shanahan, Hugh, Quick, Rob, Alfaro Córdoba, Marcela, Clement, Gail, Bezuidenhout, Louise, Shanmugasundaram, Venkat, Jones, Sarah, Ashley, Kevin, Diggs, Stephen, Gillespie, Colin, El Jadid, Sara, Sorokina, Maria, Barlow, Roger, Okorafor, Ekpe, Sipos, Gergely, Costantini, Alessandro, and Short, Hannah

Subjects
RDA Recommendation, Data Science, CODATA, Early Career Researchers
Abstract

This recommendation describes the curriculum and example materials to give Early Career Researchers (ECR’s) the foundational skills in Data Science to work with their data. This curriculum combines technical skills, such as Software Carpentry with responsible research practices such as Open and Responsible Research. This curriculum is composed of: a set of curriculum specifications for the modules run in this curriculum, an example timetable for a 10-day intensive training event, a diagram to show how these modules are connected, a spreadsheet of links to example materials that implements this, metadata for the submission, an impact statement, a document discussing the maintenance plan of the materials. The purpose of this curriculum is to be deliberately broad and shallow to be delivered over approximately 70 contact hours. It could also form the basis for a much deeper programme which will not be explored further. In 2016 we ran one school in Trieste, Italy. In 2017 we ran two, Trieste and São Paulo, Brazil. In 2018 we ran three, Trieste, São Paulo and Kigali, Rwanda. In 2019 we will run fourschools (Addis Ababa, Ethiopia, Trieste, Abuja, Nigeria and San José in Costa Rica). At the end of this year approximately 400 students will have been taught on four continents using the curriculum developed here. Note: The submission package is available athttp://doi.org/10.5281/zenodo.3478590&nbsp

Published
2019

3. Investigating Causality Effect of Tax Measures on Dividend Policy of Quoted Companies in Nigeria Stock Exchange: 2000-2011

Author

Chichi, Onuorah, Anastasia, Okay, Okorafor, Ekpe, Chichi, Onuorah, Anastasia, and Okay, Okorafor, Ekpe

Abstract

The performance of taxes measures on quoted companies in Nigeria has gained little or no attention from the empirical point of view. This study looked at the causal relationship of variable indicators of taxes on pooled dividend policy of sectors specifics in the Nigerian Stock Market covering quoted period of 12 years. Granger Causality Test Statistic was employed to evaluate the causality effect of Pooled Corporate Tax (PCTX), Pooled Earnings Per Share (PREH) and Pooled Return Earnings Per Share (PEPS) on Pooled Dividend Payment Policy (PDPT) in Nigeria. The OLS empirical results from the study showed that the results of the estimated pool model indicated that PCTX was negatively related to PDPT while PEPS and PREH were positively related to PDPT. The result also shows that there is overall statistical significance among PEPS, PREH and PDPT, and about 78.2% analysis indicated model fit while 70% of the exogenous variables can explain the endogenous variable. Granger Causality Test Statistic was employed to evaluate the causality effect of Pooled Corporate Tax (PCTX), Pooled Earnings Per Share (PREH) and Pooled Return Earnings Per Share (PEPS) on Pooled Dividend Payment Policy (PDPT) in Nigeria and the result revealed that PDPT granger causes PEPS and PCTX in the short. The study recommended that there should be a total aggressive and positive performance in the various quoted companies of especially in the construction sector. Also suggested that genuine record of market performance of the quoted companies should be guided and use as reliable record based for future performance. Keywords: Pooled Data, Granger, Dividend Policy, tax, Performance.

Published
2013

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