no code implementations • ICML 2020 • samuel cohen, Rendani Mbuvha, Tshilidzi Marwala, Marc Deisenroth
Gaussian processes (GPs) are nonparametric Bayesian models that have been applied to regression and classification problems.
1 code implementation • 8 Apr 2023 • Rendani Mbuvha, David I. Adelani, Tendani Mutavhatsindi, Tshimangadzo Rakhuhu, Aluwani Mauda, Tshifhiwa Joshua Maumela, Andisani Masindi, Seani Rananga, Vukosi Marivate, Tshilidzi Marwala
Named Entity Recognition (NER) plays a vital role in various Natural Language Processing tasks such as information retrieval, text classification, and question answering.
no code implementations • 17 Nov 2022 • Rendani Mbuvha, Julien Yise Peniel Adounkpe, Wilson Tsakane Mongwe, Mandela Houngnibo, Nathaniel Newlands, Tshilidzi Marwala
We show by simulating missingness in a testing period that GESS forecasts have a significant bias that results in low predictive skill over the ten Beninese stations.
no code implementations • 10 Oct 2021 • Lukasz Machowski, Tshilidzi Marwala
By using agent-based simulation and NanoVC repos for agent arbitration, we are able to create a simulated environment where patterns developed by people are used to transform working prototypes into templates that data can be fed through to create the robots that create the production code.
no code implementations • 5 Jul 2021 • Wilson Tsakane Mongwe, Rendani Mbuvha, Tshilidzi Marwala
The Riemannian Manifold Hamiltonian Monte Carlo algorithm improves on Hamiltonian Monte Carlo by taking into account the local geometry of the target, which is beneficial for target densities that may exhibit strong correlations in the parameters.
no code implementations • 12 Jun 2021 • Rendani Mbuvha, Patience Zondo, Aluwani Mauda, Tshilidzi Marwala
We use gradient boosting machines and logistic regression to predict academic throughput at a South African university.
1 code implementation • 14 Feb 2021 • samuel cohen, Rendani Mbuvha, Tshilidzi Marwala, Marc Peter Deisenroth
Gaussian processes (GPs) are nonparametric Bayesian models that have been applied to regression and classification problems.
no code implementations • 6 Jan 2020 • Rendani Mbuvha, Illyes Boulkaibet, Tshilidzi Marwala
We present an Automatic Relevance Determination prior Bayesian Neural Network(BNN-ARD) weight l2-norm measure as a feature importance statistic for the model-x knockoff filter.
no code implementations • 21 Oct 2019 • Daniel Muller, Tshilidzi Marwala
Over the years, many economic theories were developed to resolve the paradox and explain gaps in the economic value theory in the evaluation of economic decisions, the subjective utility of the expected outcomes, and risk aversion as observed in the game of the St. Petersburg Paradox.
no code implementations • 14 Jun 2019 • Rendani Mbuvha, Illyes Boulkaibet, Tshilidzi Marwala
Credit risk modelling is an integral part of the global financial system.
no code implementations • 13 Feb 2019 • Tshilidzi Marwala
Rationality has two elements and these are the use of relevant information and the efficient processing of such information.
no code implementations • 25 Dec 2018 • Tshilidzi Marwala
Rationality is defined as the use of complete information, which is processed with a perfect biological or physical brain, in an optimized fashion.
no code implementations • 16 Dec 2018 • Tshilidzi Marwala
This paper studies the question on whether machines can be rational.
no code implementations • 21 Jul 2018 • Bo Xing, Tshilidzi Marwala
There are generally three types of artificial intelligence and these are machine learning, evolutionary programming and soft computing.
no code implementations • 13 Feb 2018 • Tshilidzi Marwala, Bo Xing
It is undeniable that artificial intelligence (AI) and blockchain concepts are spreading at a phenomenal rate.
no code implementations • 18 Sep 2017 • Satyakama Paul, Madhur Hasija, Tshilidzi Marwala
Protests and agitations are an integral part of every democratic civil society.
no code implementations • 29 Mar 2017 • Tshilidzi Marwala
The theory of rational choice assumes that when people make decisions they do so in order to maximize their utility.
no code implementations • 20 Mar 2017 • Tshilidzi Marwala, Evan Hurwitz
This book studies the impact of artificial intelligence on economic theories, a subject that has not been extensively studied.
no code implementations • 1 Jul 2016 • Collins Leke, Tshilidzi Marwala
This deep learning technique is then used as part of the objective function for the swarm intelligence technique in order to estimate the missing data after a supervised fine-tuning phase by minimizing an error function based on the interrelationship and correlation between features in the dataset.
no code implementations • 4 Dec 2015 • Collins Leke, Tshilidzi Marwala, Satyakama Paul
In this article, considering arbitrary and monotone missing data patterns, we hypothesize that the use of deep neural networks built using autoencoders and denoising autoencoders in conjunction with genetic algorithms, swarm intelligence and maximum likelihood estimator methods as novel data imputation techniques will lead to better imputed values than existing techniques.
no code implementations • 10 Oct 2015 • Tshilidzi Marwala, Evan Hurwitz
When human agents come together to make decisions, it is often the case that one human agent has more information than the other.
no code implementations • 16 Sep 2015 • Pramod Kumar Parida, Tshilidzi Marwala, Snehashish Chakraverty
A major problem of causal inference is the arrangement of dependent nodes in a directed acyclic graph (DAG) with path coefficients and observed confounders.
no code implementations • 8 Apr 2014 • Tshilidzi Marwala
This paper introduces the concept of rational countefactuals which is an idea of identifying a counterfactual from the factual (whether perceived or real) that maximizes the attainment of the desired consequent.
no code implementations • 10 Aug 2013 • Satyakama Paul, Andreas Janecek, Fernando Buarque de Lima Neto, Tshilidzi Marwala
In this paper, we propose a new methodology based on the Negative Selection Algorithm that belongs to the field of Computational Intelligence, specifically, Artificial Immune Systems to identify takeover targets.
no code implementations • 9 Jun 2013 • Tshilidzi Marwala
Rational decision making involves using information which is almost always imperfect and incomplete together with some intelligent machine which if it is a human being is inconsistent to make decisions.
no code implementations • 26 May 2013 • Tshilidzi Marwala
Rational decision making involves using information which is almost always imperfect and incomplete as well as some intelligent machine which if it is a human being is inconsistent to make decisions.