11 citations · 14 across the 5 of their papers we have counts for
5 papers
Modeling stock price dynamics on the Ghana Stock Exchange: A Geometric Brownian Motion approach
Dennis Lartey Quayesam, Anani Lotsi, Felix Okoe Mettle
Modeling financial data often relies on assumptions that may prove insufficient or unrealistic in practice. The Geometric Brownian Motion (GBM) model is frequently employed to repr…
Joint Large Deviation principle for empirical measures of the d-regular random graphs
U. Ibrahim, A. Lotsi, K. Doku-Amponsah
For a regular random model, we assign to vertices state spins. From this model, we define the \emph{empirical co-operate measure}, which enumerates the number of co-operati…
Network estimation in State Space Model with L1-regularization constraint
Anani Lotsi, Ernst Wit
Biological networks have arisen as an attractive paradigm of genomic science ever since the introduction of large scale genomic technologies which carried the promise of elucidatin…
State-space modeling of dynamic genetic networks
Anani Lotsi, Ernst Wit
The genomic reality is a highly complex and dynamic system. The recent development of high-throughput technologies has enabled researchers to measure the abundance of many genes (i…
High dimensional Sparse Gaussian Graphical Mixture Model
Anani Lotsi, Ernst Wit
This paper considers the problem of networks reconstruction from heterogeneous data using a Gaussian Graphical Mixture Model (GGMM). It is well known that parameter estimation in t…