output
20132025
most citedCorrelation and Network Topologies in Global and Local Stock Indices

107 citations

12 papers

cs.AI2025★ 1 cited

A Survey on Foundation Models for Personalized Federated Intelligence

Yu Qiao, Huy Q. Le, Avi Deb Raha +7

The rise of large language models (LLMs), such as ChatGPT, Gemini, and Grok, has reshaped the AI landscape. As prominent instances of foundational models (FMs), they exhibit remark…

cs.CL2025★ 11 cited

Hybrid Machine Learning Model for Detecting Bangla Smishing Text Using BERT and Character-Level CNN

Gazi Tanbhir, Md. Farhan Shahriyar, Khandker Shahed +2

Smishing is a social engineering attack using SMS containing malicious content to deceive individuals into disclosing sensitive information or transferring money to cybercriminals.…

cs.CR2024★ 2 cited

A Data-Driven Predictive Analysis on Cyber Security Threats with Key Risk Factors

Fatama Tuz Johora, Md Shahedul Islam Khan, Esrath Kanon +3

Cyber risk refers to the risk of defacing reputation, monetary losses, or disruption of an organization or individuals, and this situation usually occurs by the unconscious use of…

eess.IV2023

Unleashing Modified Deep Learning Models in Efficient COVID19 Detection

Md Aminul Islam, Shabbir Ahmed Shuvo, Mohammad Abu Tareq Rony +2

The COVID19 pandemic, a unique and devastating respiratory disease outbreak, has affected global populations as the disease spreads rapidly. Recent Deep Learning breakthroughs may…

cs.LG2023★ 33 cited

Prognosis and Treatment Prediction of Type-2 Diabetes Using Deep Neural Network and Machine Learning Classifiers

Md. Kowsher, Mahbuba Yesmin Turaba, Tanvir Sajed +1

Type 2 Diabetes is a fast-growing, chronic metabolic disorder due to imbalanced insulin activity.The motion of this research is a comparative study of seven machine learning classi…

cs.SE2022★ 5 cited

An Empirical Study of Package Management Issues via Stack Overflow

Syful Islam, Raula Gaikovina Kula, Christoph Treude +3

The package manager (PM) is crucial to most technology stacks, acting as a broker to ensure that a verified dependency package is correctly installed, configured, or removed from a…

cs.CL2020

DeepHateExplainer: Explainable Hate Speech Detection in Under-resourced Bengali Language

Md. Rezaul Karim, Sumon Kanti Dey, Tanhim Islam +6

The exponential growths of social media and micro-blogging sites not only provide platforms for empowering freedom of expressions and individual voices, but also enables people to…

q-fin.GN2018★ 52 cited

State and Network Structures of Stock Markets around the Global Financial Crisis

Jae Woo Lee, Ashadun Nobi

We consider the effects of the 2008 global financial crisis on the global stock market before, during, and after the crisis. We generate complex networks from a cross-correlation m…

physics.soc-ph2015★ 18 cited

State and group dynamics of world stock market by principal component analysis

Ashadun Nobi, Jae Woo Lee

We study the dynamic interactions and structural changes in global financial indices in the years 1998-2012. We apply a principal component analysis (PCA) to cross-correlation coef…

q-fin.ST2014★ 107 cited

Correlation and Network Topologies in Global and Local Stock Indices

Ashadun Nobi, Sungmin Lee, Doo Hwan Kim +1

This study examined how the correlation and network structure of 30 global indices and 145 local Korean indices belonging to the KOSPI 200 have changed during the 13-year period, 2…

q-fin.GN2013★ 4 cited

Network Topologies of Financial Market During the Global Financial Crisis

Ashadun Nobi, Seong Eun Maeng, Gyeong Gyun Ha +1

We consider the effects of the global financial crisis through a local Korean financial market around the 2008 crisis. We analyze 185 individual stock prices belonging to the KOSPI…

q-fin.ST2013★ 42 cited

Random Matrix Theory and Cross-correlations in Global Financial Indices and Local Stock Market Indices

Ashadun Nobi, Seong Eun Maeng, Gyeong Gyun Ha +1

We analyzed cross-correlations between price fluctuations of global financial indices (20 daily stock indices over the world) and local indices (daily indices of 200 companies in t…