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Calibration of European option pricing model using a hybrid structure based on the optimized artificial neural network and Black-Scholes model [PDF]

open access: yesMathematics and Modeling in Finance
‎This study suggests a novel approach for calibrating European option pricing model by a hybrid model based on the optimized artificial neural network and Black-Scholes model‎.
Farshid Mehrdoust, Maryam Noorani
doaj   +1 more source

Pricing VXX Options With Observable Volatility Dynamics From High‐Frequency VIX Index

open access: yesJournal of Futures Markets, Volume 45, Issue 7, Page 771-801, July 2025.
ABSTRACT This paper develops a discrete‐time joint analytical framework for pricing volatility index (VIX) and VXX options consistently. We show that our framework is more flexible than continuous‐time VXX models as it allows the information contained in the high‐frequency VIX index to be incorporated for the joint pricing of VIX and VXX options, and ...
Shan Lu
wiley   +1 more source

Almost sure and moment stability properties of fractional order Black-Scholes model

open access: yes, 2013
We deal with the stability problem of the fractional order Black-Scholes model driven by fractional Brownian motion (fBm). First, necessary and sufficient conditions are established for almost sure asymptotic stability and pth moment asymptotic stability
Caibin Zeng, YangQuan Chen, Qigui Yang
semanticscholar   +1 more source

Patterns and Drivers of Phylogenetic Beta Diversity in the Forests and Savannas of Africa

open access: yesJournal of Biogeography, Volume 52, Issue 7, July 2025.
ABSTRACT Aim Studying beta diversity, or the variation in species composition among communities, can give insights into plant community assembly over space and time. If different biomes show contrasting large‐scale beta‐diversity patterns, this can indicate divergent evolutionary histories or ecological processes that then drive species turnover among ...
Mathew Rees   +5 more
wiley   +1 more source

Convergence Numerically of Trinomial Modelin European Option Pricing

open access: yesInternational Research Journal of Business Studies, 2014
A European option is a financial contract which gives its holder a right (but not an obligation) to buy or sell an underlying asset from writer at the time of expiry for a pre-determined price.
Entit Puspita   +2 more
doaj  

Modeling the Implied Volatility Smirk in China: Do Non‐Affine Two‐Factor Stochastic Volatility Models Work?

open access: yesJournal of Futures Markets, Volume 45, Issue 6, Page 612-636, June 2025.
ABSTRACT In this paper, we investigate alternative one‐factor and two‐factor continuous‐time models with both affine and non‐affine variance dynamics for the Chinese options market. Through extensive empirical analysis of the option panel fit and diagnostics, we find that it is necessary to include both the non‐affine feature and the multi‐factor ...
Yifan Ye, Zheqi Fan, Xinfeng Ruan
wiley   +1 more source

‘I Use ChatGPT, but Should I?’ A Multi‐Method Analysis of Students' Practices and Attitudes Towards AI in Higher Education

open access: yesEuropean Journal of Education, Volume 60, Issue 2, June 2025.
ABSTRACT Artificial intelligence (AI) tools have the potential to revolutionise educational practices, but their use raises ethical and organisational concerns for higher education institutions (HEIs). We investigated Italian students' perception and usage of AI tools at the University of Udine using questionnaires (N = 531) with fixed and open‐ended ...
Manuela Farinosi, Claudio Melchior
wiley   +1 more source

Sapflow Database Reveals Density‐Dependent Competition Among Woody Plants at Global Scale

open access: yesEcology Letters, Volume 28, Issue 6, June 2025.
Though limiting resources differ among systems, water is limiting in most arid and many mesic systems, potentially allowing for direct measurement of competition by measurement of water uptake. Here, we examine a global database of sapflow measurements, the SapFluxNet database, for signs of density‐dependent competition for water.
Trevor Roberts, Niall P. Hanan
wiley   +1 more source

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