Zobrazeno 1 - 10
of 110
pro vyhledávání: '"van Zyl, Terence"'
Autor:
Nundlall, Taeisha, Van Zyl, Terence L
Socially responsible investors build investment portfolios intending to incite social and environmental advancement alongside a financial return. Although Mean-Variance (MV) models successfully generate the highest possible return based on an investo
Externí odkaz:
http://arxiv.org/abs/2305.12364
Autor:
Bullah, Sonia, van Zyl, Terence L.
Multi-objective portfolio optimisation is a critical problem researched across various fields of study as it achieves the objective of maximising the expected return while minimising the risk of a given portfolio at the same time. However, many studi
Externí odkaz:
http://arxiv.org/abs/2304.06675
Autor:
van Zyl, Terence L.
Meta-learning, decision fusion, hybrid models, and representation learning are topics of investigation with significant traction in time-series forecasting research. Of these two specific areas have shown state-of-the-art results in forecasting: hybr
Externí odkaz:
http://arxiv.org/abs/2303.11000
Missing data is a common concern in health datasets, and its impact on good decision-making processes is well documented. Our study's contribution is a methodology for tackling missing data problems using a combination of synthetic dataset generation
Externí odkaz:
http://arxiv.org/abs/2211.02856
In many lower-and-middle income countries including South Africa, data access in health facilities is restricted due to patient privacy and confidentiality policies. Further, since clinical data is unique to individual institutions and laboratories,
Externí odkaz:
http://arxiv.org/abs/2210.17161
Real-world optimisation problems typically have objective functions which cannot be expressed analytically. These optimisation problems are evaluated through expensive physical experiments or simulations. Cheap approximations of the objective functio
Externí odkaz:
http://arxiv.org/abs/2210.17149
Context-aware recommendation systems improve upon classical recommender systems by including, in the modelling, a user's behaviour. Research into context-aware recommendation systems has previously only considered the sequential ordering of items as
Externí odkaz:
http://arxiv.org/abs/2210.10652
Portfolio management is a multi-period multi-objective optimisation problem subject to a wide range of constraints. However, in practice, portfolio management is treated as a single-period problem partly due to the computationally burdensome hyper-pa
Externí odkaz:
http://arxiv.org/abs/2209.13528
Autor:
Bhana, Nimesh, van Zyl, Terence L.
Language Models such as BERT have grown in popularity due to their ability to be pre-trained and perform robustly on a wide range of Natural Language Processing tasks. Often seen as an evolution over traditional word embedding techniques, they can pr
Externí odkaz:
http://arxiv.org/abs/2206.14574
Lower-and-middle income countries are faced with challenges arising from a lack of data on cause of death (COD), which can limit decisions on population health and disease management. A verbal autopsy(VA) can provide information about a COD in areas
Externí odkaz:
http://arxiv.org/abs/2204.12169