Results 111 to 120 of about 69,262 (283)

Numerical Aspects to Estimate the Generalized Hyperbolic Probability Distribution

Journal of Finance & Economics, 2013
In this paper we present numerical aspects of a modified EM algorithm of maximum likelihood to estimate the generalized hyperbolic probability distribution. The estimation is considering the parameter λ of the modified Bessel function of third order as a no constrained parameter. A suitable starting point for the numerical method is proposed to reduce
openaire   +1 more source

PAIR: Reconstructing Single‐Cell Open‐Chromatin Landscapes for Transcription Factor Regulome Mapping

Advanced Science, EarlyView.
scATAC‐seq analysis is often constrained by limited sequencing depth, extreme sparsity, and pervasive technical missingness. PAIR is a probabilistic framework that restores scATAC‐seq accessibility profiles by directly modeling the native cell–peak bipartite structure of chromatin accessibility.
Yanchi Su, Qi Qi, Yi Fan, Yubo Wang, Gaoyang Hao, Ka‐Chun Wong, Yunhe Wang, Xiangtao Li   +7 more
wiley   +1 more source

The L-distribution and skew generalizations [PDF]

Leptokurtic or platykurtic distributions can, for example, be generated by applying certain non-linear transformations to a Gaussian random variable. Within this work we focus on the class of so-called power transformations which are determined by their ...
Fischer, Matthias J.
core   +3 more sources

Bioinspired Morphology‐Decoupled Soft Gripper with Enhanced Bidirectional Grasping Capability

Advanced Science, EarlyView.
Inspired by biological predation, a novel gripper decouples cross‐modal grasping via dual morphological configurations. Synergistically integrating hybrid rigid and soft coupled fingers with a metamaterial palm, the system performs active compliant grasping for static objects and passive cage capture for dynamic targets.
Yedong Huang, Dazhong Yu, Baijin Mao, Fangming Li, Juntian Qu   +4 more
wiley   +1 more source

A Proper Directional Spreading Function (DSF) For Waves Climate of Hormuz Strait Zone

نشریه مهندسی دریا, 2015
In this article by evaluating the performance of standard Directional Spreading Functions (DSFs) with those of field DSs at the Strait of Hormuz, such standard DSFs have been calibrated.
Reza Gharangian, Mehdi Shafieefar, Roozbeh Panahi   +2 more
doaj  

Cross-Commodity Analysis and Applications to Risk management [PDF]

, 2007
The understanding of joint asset return distributions is an important ingredient for managing risks of portfolios. While this is a well-discussed issue in fixed income and equity markets, it is a challenge for energy commodities.
Börger, Reik, Cartea, Álvaro, Kiesel, Rüdiger, Schindlmayr, Gero   +3 more
core   +1 more source

Revisiting Target‐Aware de novo Molecular Generation with TarPass: Between Rational Design and Texas Sharpshooter

Advanced Science, EarlyView.
TarPass provides a rigorous benchmark for target‐aware de novo molecular generation by jointly evaluating protein‐ligand interactions, molecular plausibility, and drug‐likeness on 18 well‐studied targets. Results show that current models often fail to consistently surpass random baseline in target‐specific enrichment, while post hoc multi‐tier virtual ...
Rui Qin, Zijie Chen, Yurong Li, Meijing Fang, Longji Shen, Yilong Su, Odin Zhang, Qinghan Wang, Qun Su, Jike Wang, Tingjun Hou, Yu Kang   +11 more
wiley   +1 more source

Modelling Co-movements and Tail Dependency in the International Stock Market via Copulae [PDF]

This paper examines international equity market co-movements using time-varying copulae. We examine distributions from the class of Symmetric Generalized Hyperbolic (SGH) distributions for modelling univariate marginals of equity index returns.
Eckhard Platen, Katja Ignatieva
core  

Data‐Driven Modeling of Composition–Processing–Microstructure Relations for Recycled Aluminum Cast Alloys

Advanced Science, EarlyView.
Interpretable machine learning reveals how composition and processing govern the formation and microstructural burden of Fe‐rich intermetallic compounds in recycled Al–Si–Fe–Mn alloys. By separating morphology selection from morphology‐conditioned burden partitioning, this framework shows that identical Fe contents can yield different intermetallic ...
Jaemin Wang, Waleed Mohammed, Dierk Raabe   +2 more
wiley   +1 more source

Thermosolutal Marangoni convective flow of MHD tangent hyperbolic hybrid nanofluids with elastic deformation and heat source

Open Physics
In this work, the Marangoni convective flow of magnetohydrodynamic tangent hyperbolic (Fe3O4−Cu/{{\rm{F}}{{\rm{e}}}_{3}{\rm{O}}}_{4}-{\rm{Cu}}/ethylene glycol) hybrid nanofluids over a plate dipped in a permeable material with heat absorption/generation,
Zhou Xiangning, Qureshi Muhammad Amer, Khan Nargis, Jamshed Wasim, Mohamed Isa Siti Suzilliana Putri, Balakrishnan Nanthini, Hussain Syed M.   +6 more
doaj   +1 more source