Results 21 to 30 of about 4,303,369 (356)

Deep Neural Networks for Behavioral Credit Rating

open access: yesEntropy, 2020
Logistic regression is the industry standard in credit risk modeling. Regulatory requirements for model explainability have halted the implementation of more advanced, non-linear machine learning algorithms, even though more accurate predictions would ...
Andro Merćep   +3 more
doaj   +1 more source

Challenges of integrated variance estimation in emerging stock markets [PDF]

open access: yesZbornik radova Ekonomskog fakulteta u Rijeci : časopis za ekonomsku teoriju i praksu, 2019
Estimating integrated variance, using high frequency data, requires modelling experience and data crunching skills. Although intraday returns have attracted much attention in recent years, handling these data is challenging because of their ...
Josip Arnerić, Mario Matković
doaj   +1 more source

Responsible Research and Innovation in the Context of University Technology Transfer

open access: yesActa Universitatis Lodziensis. Folia Oeconomica, 2017
The term „Responsible Research and Innovation (RRI)” has been increasingly used for over a decade. The RRI concept is not currently well defined. The theory of RRI is not developed enough and there are still conceptual divergences.
Jerzy Piotr Gwizdała, Karol Śledzik
doaj   +1 more source

Energy efficiency performance in RIS-based integrated satellite–aerial–terrestrial relay networks with deep reinforcement learning

open access: yesEURASIP Journal on Advances in Signal Processing, 2023
Integrated satellite–aerial–terrestrial relay networks (ISATRNs) play a vital role in next-gen networks, particularly those with high-altitude platforms (HAP).
Jiao Li   +5 more
doaj   +1 more source

A New Data-Driven Distributionally Robust Portfolio Optimization Method Based on Wasserstein Ambiguity Set

open access: yesIEEE Access, 2021
Since optimal portfolio strategy depends heavily on the distribution of uncertain returns, this article proposes a new method for the portfolio optimization problem with respect to distribution uncertainty.
Ningning Du, Yankui Liu, Ying Liu
doaj   +1 more source

Testing 65 Equity Indexes for Normal Distribution of Returns [PDF]

open access: yesJournal of Economics and Management, 2018
Aim/purpose - The primary aim of the paper is to verify the hypothesis on the normal distributions of 65 stock index returns, while the secondary aims are to examine normal distributions for specific years (for six indexes) and for bull and bear markets (
Krzysztof Borowski
doaj   +1 more source

Financial Performance and Working Capital Management Practices in the Retail Sector: Empirical Evidence from South Africa

open access: yesRisks, 2022
This study examines the relationship between the financial performance and working capital management practices of South African retail firms listed on the Johannesburg Stock Exchange.
Garikai Mandipa, Athenia Bongani Sibindi
doaj   +1 more source

Analysing Quantiles in Models of Forward Term Rates

open access: yesRisks, 2023
The class of forward-LIBOR market models can, under certain volatility structures, produce unrealistically high long-dated forward rates, particularly for maturities and tenors beyond the liquid market calibration instruments.
Thomas A. McWalter   +2 more
doaj   +1 more source

The impact of income diversification on the stability of listed Jordanian commercial banks during the COVID-19 pandemic [PDF]

open access: yesBanks and Bank Systems, 2023
This study investigates the impact of the COVID-19 pandemic on the relationship between income diversification and bank stability among Jordanian commercial banks listed on the Amman Stock Exchange (ASE), using a panel Autoregressive Distributed-Lagged ...
Abdallah Khaled Al-Habashneh   +2 more
doaj   +1 more source

Political Risk, Economic Risk, and Financial Risk [PDF]

open access: yesFinancial Analysts Journal, 1996
Given the increasingly global nature of investment portfolios, an understanding of country risk is very important. This article addresses the economic content of five different measures of country risk: four measures from the International Country Risk Guide's political-, financial-, economic-, and composite-risk indexes and one from Institutional ...
Claude B. Erb   +2 more
openaire   +1 more source

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