ftir_mlp_plain/
plain.rs

1// Copyright (C) 2024 Hallvard Høyland Lavik
2
3use neurons::{activation, network, objective, optimizer, plot, tensor};
4
5use std::{
6    fs::File,
7    io::{BufRead, BufReader},
8};
9
10fn data(
11    path: &str,
12) -> (
13    (
14        Vec<tensor::Tensor>,
15        Vec<tensor::Tensor>,
16        Vec<tensor::Tensor>,
17    ),
18    (
19        Vec<tensor::Tensor>,
20        Vec<tensor::Tensor>,
21        Vec<tensor::Tensor>,
22    ),
23    (
24        Vec<tensor::Tensor>,
25        Vec<tensor::Tensor>,
26        Vec<tensor::Tensor>,
27    ),
28) {
29    let reader = BufReader::new(File::open(&path).unwrap());
30
31    let mut x_train: Vec<tensor::Tensor> = Vec::new();
32    let mut y_train: Vec<tensor::Tensor> = Vec::new();
33    let mut class_train: Vec<tensor::Tensor> = Vec::new();
34
35    let mut x_test: Vec<tensor::Tensor> = Vec::new();
36    let mut y_test: Vec<tensor::Tensor> = Vec::new();
37    let mut class_test: Vec<tensor::Tensor> = Vec::new();
38
39    let mut x_val: Vec<tensor::Tensor> = Vec::new();
40    let mut y_val: Vec<tensor::Tensor> = Vec::new();
41    let mut class_val: Vec<tensor::Tensor> = Vec::new();
42
43    for line in reader.lines().skip(1) {
44        let line = line.unwrap();
45        let record: Vec<&str> = line.split(',').collect();
46
47        let mut data: Vec<f32> = Vec::new();
48        for i in 0..571 {
49            data.push(record.get(i).unwrap().parse::<f32>().unwrap());
50        }
51        match record.get(573).unwrap() {
52            &"Train" => {
53                x_train.push(tensor::Tensor::single(data));
54                y_train.push(tensor::Tensor::single(vec![record
55                    .get(571)
56                    .unwrap()
57                    .parse::<f32>()
58                    .unwrap()]));
59                class_train.push(tensor::Tensor::one_hot(
60                    record.get(572).unwrap().parse::<usize>().unwrap() - 1, // For zero-indexed.
61                    28,
62                ));
63            }
64            &"Test" => {
65                x_test.push(tensor::Tensor::single(data));
66                y_test.push(tensor::Tensor::single(vec![record
67                    .get(571)
68                    .unwrap()
69                    .parse::<f32>()
70                    .unwrap()]));
71                class_test.push(tensor::Tensor::one_hot(
72                    record.get(572).unwrap().parse::<usize>().unwrap() - 1, // For zero-indexed.
73                    28,
74                ));
75            }
76            &"Val" => {
77                x_val.push(tensor::Tensor::single(data));
78                y_val.push(tensor::Tensor::single(vec![record
79                    .get(571)
80                    .unwrap()
81                    .parse::<f32>()
82                    .unwrap()]));
83                class_val.push(tensor::Tensor::one_hot(
84                    record.get(572).unwrap().parse::<usize>().unwrap() - 1, // For zero-indexed.
85                    28,
86                ));
87            }
88            _ => panic!("> Unknown class."),
89        }
90    }
91
92    // let mut generator = random::Generator::create(12345);
93    // let mut indices: Vec<usize> = (0..x.len()).collect();
94    // generator.shuffle(&mut indices);
95
96    (
97        (x_train, y_train, class_train),
98        (x_test, y_test, class_test),
99        (x_val, y_val, class_val),
100    )
101}
102
103fn main() {
104    // Load the ftir dataset
105    let ((x_train, y_train, class_train), (x_test, y_test, class_test), (x_val, y_val, class_val)) =
106        data("./examples/datasets/ftir.csv");
107
108    let x_train: Vec<&tensor::Tensor> = x_train.iter().collect();
109    let y_train: Vec<&tensor::Tensor> = y_train.iter().collect();
110    let class_train: Vec<&tensor::Tensor> = class_train.iter().collect();
111
112    let x_test: Vec<&tensor::Tensor> = x_test.iter().collect();
113    let y_test: Vec<&tensor::Tensor> = y_test.iter().collect();
114    let class_test: Vec<&tensor::Tensor> = class_test.iter().collect();
115
116    let x_val: Vec<&tensor::Tensor> = x_val.iter().collect();
117    let y_val: Vec<&tensor::Tensor> = y_val.iter().collect();
118    let class_val: Vec<&tensor::Tensor> = class_val.iter().collect();
119
120    println!("Train data {}x{}", x_train.len(), x_train[0].shape,);
121    println!("Test data {}x{}", x_test.len(), x_test[0].shape,);
122    println!("Validation data {}x{}", x_val.len(), x_val[0].shape,);
123
124    vec!["REGRESSION", "CLASSIFICATION"]
125        .iter()
126        .for_each(|method| {
127            // Create the network
128            let mut network = network::Network::new(tensor::Shape::Single(571));
129
130            network.dense(128, activation::Activation::ReLU, false, None);
131            network.dense(256, activation::Activation::ReLU, false, None);
132            network.dense(128, activation::Activation::ReLU, false, None);
133
134            if method == &"REGRESSION" {
135                network.dense(1, activation::Activation::Linear, false, None);
136                network.set_objective(objective::Objective::RMSE, None);
137            } else {
138                network.dense(28, activation::Activation::Softmax, false, None);
139                network.set_objective(objective::Objective::CrossEntropy, None);
140            }
141
142            network.set_optimizer(optimizer::Adam::create(0.001, 0.9, 0.999, 1e-8, None));
143
144            println!("{}", network);
145
146            // Train the network
147            let (train_loss, val_loss, val_acc);
148            if method == &"REGRESSION" {
149                println!("> Training the network for regression.");
150
151                (train_loss, val_loss, val_acc) = network.learn(
152                    &x_train,
153                    &y_train,
154                    Some((&x_val, &y_val, 50)),
155                    16,
156                    500,
157                    Some(100),
158                );
159            } else {
160                println!("> Training the network for classification.");
161
162                (train_loss, val_loss, val_acc) = network.learn(
163                    &x_train,
164                    &class_train,
165                    Some((&x_val, &class_val, 50)),
166                    16,
167                    500,
168                    Some(100),
169                );
170            }
171            plot::loss(
172                &train_loss,
173                &val_loss,
174                &val_acc,
175                &format!("PLAIN : FTIR : {}", method),
176                &format!("./output/ftir/mlp-{}.png", method.to_lowercase()),
177            );
178
179            if method == &"REGRESSION" {
180                // Use the network
181                let prediction = network.predict(x_test.get(0).unwrap());
182                println!(
183                    "Prediction. Target: {}. Output: {}.",
184                    y_test[0].data, prediction.data
185                );
186            } else {
187                // Validate the network
188                let (val_loss, val_acc) = network.validate(&x_test, &class_test, 1e-6);
189                println!(
190                    "Final validation accuracy: {:.2} % and loss: {:.5}",
191                    val_acc * 100.0,
192                    val_loss
193                );
194
195                // Use the network
196                let prediction = network.predict(x_test.get(0).unwrap());
197                println!(
198                    "Prediction. Target: {}. Output: {}.",
199                    class_test[0].argmax(),
200                    prediction.argmax()
201                );
202            }
203        });
204}
ftir_mlp_plain/plain.rs

ftir_mlp_plain/
plain.rs
