From 93b10cea14d6414344e5287a6b07c776edfd476a Mon Sep 17 00:00:00 2001 From: MRIDUL JAIN <105979087+Spinachboul@users.noreply.github.com> Date: Sun, 14 Jan 2024 11:13:16 +0530 Subject: [PATCH] Update tensor_prod.md --- docs/src/tensor_prod.md | 44 +++++++++++++++++++++++++++-------------- 1 file changed, 29 insertions(+), 15 deletions(-) diff --git a/docs/src/tensor_prod.md b/docs/src/tensor_prod.md index e6518e17..b6e56f51 100644 --- a/docs/src/tensor_prod.md +++ b/docs/src/tensor_prod.md @@ -14,14 +14,16 @@ using Plots default() ``` -# Generating Data and Plotting +Generating Data and Plotting ```@example tensor function tensor_product_function(x, a) return prod(cos.(a * π * xi) for xi in x) end +``` -# Generate training and test data +Generate training and test data +```@example tensor function generate_data(n, lb, ub, a) x_train = sample(n, lb, ub, SobolSample()) y_train = tensor_product_function(x_train, a) @@ -31,16 +33,20 @@ function generate_data(n, lb, ub, a) return x_train, y_train, x_test, y_test end +``` -# Visualize training data and the true function +Visualize training data and the true function +```example tensor function plot_data_and_true_function(x_train, y_train, x_test, y_test, a, lb, ub) xs = range(lb, ub, length=1000) plot(xs, tensor_product_function.(xs, a), label="True Function", legend=:top) scatter!(x_train, repeat([y_train], length(x_train)), label="Training Points", xlims=(lb,ub), ylims=(-1,1)) scatter!(x_test, repeat([y_test], length(x_test)), label="Test Points") end +``` -# Generate data and plot +Generate data and plot +```@example tensor n = 30 lb = -5.0 ub = 5.0 @@ -50,25 +56,27 @@ x_train, y_train, x_test, y_test = generate_data(n, lb, ub, a) plot_data_and_true_function(x_train, y_train, x_test, y_test, a, lb, ub) ``` -# Training various Surrogates -Now let's train various surrogate models and evaluate their performance on the test data +Training various Surrogates -``` -# Train different surrogate models +```@example tensor function train_surrogates(x_train, y_train, lb, ub, alpha=2.0, n=6) loba = LobachevskySurrogate(x_train, y_train, lb, ub, alpha=alpha, n=n) krig = Kriging(x_train, y_train, lb, ub) return loba, krig end +``` -# Evaluate and compare surrogate model performances +Evaluate and compare surrogate model performances +```@example tensor function evaluate_surrogates(loba, krig, x_test) loba_pred = loba.(x_test) krig_pred = krig.(x_test) return loba_pred, krig_pred end +``` -# Plot surrogate predictions against the true function +Plot surrogate predictions against the true function +```@example tensor function plot_surrogate_predictions(loba_pred, krig_pred, x_test, y_test, a, lb, ub) xs = collect(x_test) # Convert x_test to an array plot(xs, tensor_product_function.(xs, a), label="True Function", legend=:top) @@ -76,28 +84,34 @@ function plot_surrogate_predictions(loba_pred, krig_pred, x_test, y_test, a, lb, plot!(collect(x_test), krig_pred, seriestype=:scatter, label="Kriging") plot!(collect(x_test), fill(y_test, length(x_test)), seriestype=:scatter, label="Sampled points") # Use fill to create an array of the same length as x_test end +``` -# Train surrogates and evaluate their performance +Train surrogates and evaluate their performance +```@example tensor lb, ub = minimum(x_train), maximum(x_train) loba, krig = train_surrogates(x_train, y_train, lb, ub) loba_pred, krig_pred = evaluate_surrogates(loba, krig, x_test) +``` -# Plotting Results +Plotting Results +```@example tensor plot_surrogate_predictions(loba_pred, krig_pred, x_test, y_test, 2.0, lb, ub) ``` -# Reporting the best Surrogate Model +Reporting the best Surrogate Model To determine the best surrogate, you can compare their accuracy and performance metrics on the test data. For instance, you can calculate and compare the mean squared error (MSE) or any other relevant metric -``` +```@example tensor using Statistics # Evaluate performance metrics function calculate_performance_metrics(pred, true_vals) return mean((pred .- true_vals).^2) end +``` -# Compare surrogate model performances +Compare surrogate model performances +```@example tensor mse_loba = calculate_performance_metrics(loba_pred, y_test) mse_krig = calculate_performance_metrics(krig_pred, y_test)