Sachin Chandrasekara

10 Questions 12 Answers 0 Followers

Questions related from Sachin Chandrasekara

What are the potential causes of NaN values in accuracy metrics, especially when working with time series forecasting models in R?

I am working with a time series dataset using the `fable` package (R). I have fitted several models (e.g., ARIMA) and generated forecasts. The accuracy calculation is resulting in NaN values, and...

17 January 2024 7,602 2 View

How can I solve a system of one ODE and two PDEs within the same mathematical model using numerical methods and Machine Learning?

I am working on a research project involving a system of differential equations with one ordinary differential equation (ODE) and two partial differential equations (PDEs). I would like to...

06 November 2023 5,901 4 View

How to Select Optimal Parameter for MACD Signal Indicator in Multivariate Time Series Analysis Data ?

I am conducting a research project involving the use of the MACD (Moving Average Convergence Divergence) signal indicator for analyzing multivariate time series data, possibly for trading...

12 October 2023 9,289 1 View

Why are most of my forecasts values linear and not capturing the seasonality in time series forecasting?

Need urgent help regarding this. I am currently working on a project involving multiple time series forecasting using R. For the forecasting process, I have monthly data available from 2019 up to...

16 May 2023 7,514 4 View

What are the methods for outliers detection and outliers treatment for time series analysis?

I have been assigned the task of performing business sales forecasting using time series analysis. However, before starting the forecasting process, I need to identify and treat the outliers in...

25 April 2023 3,847 4 View

How to find equilibrium points of a system of ODEs require solving a set of non-linear equations by python or Matlab ?

I have a system of non-linear differential equations that explains the behaviour of some of the cancer cells. Looking for help identifying the equilibrium points and eigenvalues of this model in...

16 January 2023 745 2 View

How to solve this error "Invalid python interpreter selected" prompt in VS Code ?

I have been attempting to set up my Python workspace on VS Code, but the programme keeps telling me that I need to instal Python because it doesn't seem to recognise that I already have Python...

02 January 2023 3,898 6 View

How to solving a systems of Ordinary Differential Equations (ODE) using numerical methods in Java Programming ?

I'm trying to write a java programme that will solve the system of ordinary differential equations using the Runge-Kutta fourth-order (RK4) technique. I need to solve a system of five equations....

02 December 2022 6,812 10 View

How to Insert Google Scholar icon and Researchgate icon by using Latex (Overleaf) ?

Using Latex, I want to insert the Google Scholar icon and Researchgate in my CV. I used the following command, but it doesn't appear researchgate icon. Link works....

10 November 2022 385 6 View

How I can solve this modeller error ?

I am trying to do simple modelling similar to the basic tutorial given on the modeller's website following error occurs while I compile in the same directory. FATAL ERROR: Cannot open file...

28 October 2022 7,337 2 View