33 citations · 49 across the 11 of their papers we have counts for
13 papers
BioSEN: A Bio-acoustic Signal Enhancement Network for Animal Vocalizations
Tianyu Song, Ton Viet Ta, Ngamta Thamwattana +2
Most work in audio enhancement targets human speech, while bioacoustics is less studied due to noisy recordings and the distinct traits of animal sounds. To fill this gap, we adapt…
Mathematical Models for Fish Schooling
Linh Thi Hoai Nguyen, Ton Viet Ta, Atsushi Yagi
This note reviews our mathematical models for fish schooling, considered in free space, and in space with obstacle and food resource. These models are performed by stochastic diffe…
Quantifying Fish School Fragmentation under Predation Using Stochastic Differential Equations
Junyi Qi, Thorkil Casse, Masayoshi Harada +2
This study builds upon our previously proposed stochastic differential equation (SDE)-based model to further investigate fish school fragmentation under predation. Specifically, we…
Deep learning-based method for weather forecasting: A case study in Itoshima
Yuzhong Cheng, Linh Thi Hoai Nguyen, Akinori Ozaki +1
Accurate weather forecasting is of paramount importance for a wide range of practical applications, drawing substantial scientific and societal interest. However, the intricacies o…
MPSA-DenseNet: A novel deep learning model for English accent classification
Tianyu Song, Linh Thi Hoai Nguyen, Ton Viet Ta
This paper presents three innovative deep learning models for English accent classification: Multi-DenseNet, PSA-DenseNet, and MPSE-DenseNet, that combine multi-task learning and t…
A Geometrical Structure for Predator-Avoidance Fish Schooling
Aditya Dewanto Hartono, Ton Viet Ta, Linh Thi Hoai Nguyen
This paper conducts a numerical study of a geometrical structure called -school for predator-avoidance fish schools, based on our previous mathematical model. Our results show t…
A Stochastic Differential Equation Model for Predator-Avoidance Fish Schooling
Aditya Dewanto Hartono, Linh Thi Hoai Nguyen, Ton Viet Ta
This paper presents a system of stochastic differential equations (SDEs) as mathematical model to describe the spatial-temporal dynamics of predator-prey system in an artificial aq…
Obstacle avoiding patterns and cohesiveness of fish school
Linh Thi Hoai Nguyen, Viet Ton Ta, Atsushi Yagi
This paper is devoted to studying obstacle avoiding patterns and cohesiveness of fish school. First, we introduce a model of stochastic differential equations (SDEs) for describing…
A sustainability condition for stochastic forest model
Ton Viet Ta, Linh Thi Hoai Nguyen, Atsushi Yagi
A stochastic forest model of young and old age class trees is studied. First, we prove existence, uniqueness and boundedness of global nonnegative solutions. Second, we investigate…
A stochastic differential equation model for foraging behavior of fish schools
Ton Viet Ta, Linh Thi Hoai Nguyen
We present a novel model of stochastic differential equations for foraging behavior of fish schools in space including obstacles. We then study the model numerically. Three configu…
Dynamics of a stochastic ratio-dependent predator-prey model
Nguyen Thi Hoai Linh, Ta Viet Ton
In this paper, we consider a stochastic ratio-dependent predator-prey model. We firstly prove the existence, uniqueness and positivity of the solutions. Then, the boundedness of mo…
Existence and stability of periodic solutions of a Lotka-Volterra system
Nguyen Thi Hoai Linh, Ta Hong Quang, Ta Viet Ton
In this paper, we study a Lotka-Volterra model which contains two prey and one predator with the Beddington-DeAngelis functional responses. First, we establish a set of sufficient…
Flocking and non-flocking behavior in a stochastic Cucker-Smale system
Ta Viet Ton, Nguyen Thi Hoai Linh, Atsushi Yagi
We first present a new stochastic version of the Cucker-Smale model of the emergent behavior in flocks in which the mutual communication between individuals is affected by random f…