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Priec
2026-03-12 15:20:07 +01:00
parent f0b2073caa
commit 2174d4e506
4 changed files with 844 additions and 69 deletions
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name = "powerfmt"
version = "0.2.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "439ee305def115ba05938db6eb1644ff94165c5ab5e9420d1c1bcedbba909391"
[[package]]
name = "ppmd-rust"
version = "1.4.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "efca4c95a19a79d1c98f791f10aebd5c1363b473244630bb7dbde1dc98455a24"
[[package]] [[package]]
name = "ppv-lite86" name = "ppv-lite86"
version = "0.2.21" version = "0.2.21"
@@ -1906,6 +2269,19 @@ version = "1.0.17"
source = "registry+https://github.com/rust-lang/crates.io-index" source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "3eb8486b569e12e2c32ad3e204dbaba5e4b5b216e9367044f25f1dba42341773" checksum = "3eb8486b569e12e2c32ad3e204dbaba5e4b5b216e9367044f25f1dba42341773"
[[package]]
name = "py_literal"
version = "0.4.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "102df7a3d46db9d3891f178dcc826dc270a6746277a9ae6436f8d29fd490a8e1"
dependencies = [
"num-bigint",
"num-complex",
"num-traits",
"pest",
"pest_derive",
]
[[package]] [[package]]
name = "quote" name = "quote"
version = "1.0.45" version = "1.0.45"
@@ -1921,6 +2297,12 @@ version = "5.3.0"
source = "registry+https://github.com/rust-lang/crates.io-index" source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "69cdb34c158ceb288df11e18b4bd39de994f6657d83847bdffdbd7f346754b0f" checksum = "69cdb34c158ceb288df11e18b4bd39de994f6657d83847bdffdbd7f346754b0f"
[[package]]
name = "r-efi"
version = "6.0.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "f8dcc9c7d52a811697d2151c701e0d08956f92b0e24136cf4cf27b57a6a0d9bf"
[[package]] [[package]]
name = "rand" name = "rand"
version = "0.9.2" version = "0.9.2"
@@ -1928,7 +2310,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "6db2770f06117d490610c7488547d543617b21bfa07796d7a12f6f1bd53850d1" checksum = "6db2770f06117d490610c7488547d543617b21bfa07796d7a12f6f1bd53850d1"
dependencies = [ dependencies = [
"rand_chacha", "rand_chacha",
"rand_core", "rand_core 0.9.5",
] ]
[[package]] [[package]]
@@ -1938,9 +2320,15 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "d3022b5f1df60f26e1ffddd6c66e8aa15de382ae63b3a0c1bfc0e4d3e3f325cb" checksum = "d3022b5f1df60f26e1ffddd6c66e8aa15de382ae63b3a0c1bfc0e4d3e3f325cb"
dependencies = [ dependencies = [
"ppv-lite86", "ppv-lite86",
"rand_core", "rand_core 0.9.5",
] ]
[[package]]
name = "rand_core"
version = "0.6.4"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "ec0be4795e2f6a28069bec0b5ff3e2ac9bafc99e6a9a7dc3547996c5c816922c"
[[package]] [[package]]
name = "rand_core" name = "rand_core"
version = "0.9.5" version = "0.9.5"
@@ -2175,6 +2563,40 @@ dependencies = [
"serde_core", "serde_core",
] ]
[[package]]
name = "sha1"
version = "0.10.6"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "e3bf829a2d51ab4a5ddf1352d8470c140cadc8301b2ae1789db023f01cedd6ba"
dependencies = [
"cfg-if",
"cpufeatures",
"digest",
]
[[package]]
name = "sha2"
version = "0.10.9"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "a7507d819769d01a365ab707794a4084392c824f54a7a6a7862f8c3d0892b283"
dependencies = [
"cfg-if",
"cpufeatures",
"digest",
]
[[package]]
name = "shlex"
version = "1.3.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "0fda2ff0d084019ba4d7c6f371c95d8fd75ce3524c3cb8fb653a3023f6323e64"
[[package]]
name = "simd-adler32"
version = "0.3.8"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "e320a6c5ad31d271ad523dcf3ad13e2767ad8b1cb8f047f75a8aeaf8da139da2"
[[package]] [[package]]
name = "slab" name = "slab"
version = "0.4.12" version = "0.4.12"
@@ -2233,6 +2655,12 @@ version = "0.11.1"
source = "registry+https://github.com/rust-lang/crates.io-index" source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "7da8b5736845d9f2fcb837ea5d9e2628564b3b043a70948a3f0b778838c5fb4f" checksum = "7da8b5736845d9f2fcb837ea5d9e2628564b3b043a70948a3f0b778838c5fb4f"
[[package]]
name = "subtle"
version = "2.6.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "13c2bddecc57b384dee18652358fb23172facb8a2c51ccc10d74c157bdea3292"
[[package]] [[package]]
name = "syn" name = "syn"
version = "2.0.117" version = "2.0.117"
@@ -2302,6 +2730,26 @@ dependencies = [
"crossbeam-channel", "crossbeam-channel",
] ]
[[package]]
name = "time"
version = "0.3.47"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "743bd48c283afc0388f9b8827b976905fb217ad9e647fae3a379a9283c4def2c"
dependencies = [
"deranged",
"js-sys",
"num-conv",
"powerfmt",
"serde_core",
"time-core",
]
[[package]]
name = "time-core"
version = "0.1.8"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "7694e1cfe791f8d31026952abf09c69ca6f6fa4e1a1229e18988f06a04a12dca"
[[package]] [[package]]
name = "tiny-keccak" name = "tiny-keccak"
version = "2.0.2" version = "2.0.2"
@@ -2359,6 +2807,24 @@ dependencies = [
"rustc-hash 2.1.1", "rustc-hash 2.1.1",
] ]
[[package]]
name = "typed-path"
version = "0.12.3"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "8e28f89b80c87b8fb0cf04ab448d5dd0dd0ade2f8891bae878de66a75a28600e"
[[package]]
name = "typenum"
version = "1.19.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "562d481066bde0658276a35467c4af00bdc6ee726305698a55b86e61d7ad82bb"
[[package]]
name = "ucd-trie"
version = "0.1.7"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "2896d95c02a80c6d6a5d6e953d479f5ddf2dfdb6a244441010e373ac0fb88971"
[[package]] [[package]]
name = "unicode-ident" name = "unicode-ident"
version = "1.0.24" version = "1.0.24"
@@ -2439,6 +2905,15 @@ dependencies = [
"wit-bindgen", "wit-bindgen",
] ]
[[package]]
name = "wasip3"
version = "0.4.0+wasi-0.3.0-rc-2026-01-06"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "5428f8bf88ea5ddc08faddef2ac4a67e390b88186c703ce6dbd955e1c145aca5"
dependencies = [
"wit-bindgen",
]
[[package]] [[package]]
name = "wasm-bindgen" name = "wasm-bindgen"
version = "0.2.114" version = "0.2.114"
@@ -2498,6 +2973,40 @@ dependencies = [
"unicode-ident", "unicode-ident",
] ]
[[package]]
name = "wasm-encoder"
version = "0.244.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "990065f2fe63003fe337b932cfb5e3b80e0b4d0f5ff650e6985b1048f62c8319"
dependencies = [
"leb128fmt",
"wasmparser",
]
[[package]]
name = "wasm-metadata"
version = "0.244.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "bb0e353e6a2fbdc176932bbaab493762eb1255a7900fe0fea1a2f96c296cc909"
dependencies = [
"anyhow",
"indexmap",
"wasm-encoder",
"wasmparser",
]
[[package]]
name = "wasmparser"
version = "0.244.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "47b807c72e1bac69382b3a6fb3dbe8ea4c0ed87ff5629b8685ae6b9a611028fe"
dependencies = [
"bitflags",
"hashbrown 0.15.5",
"indexmap",
"semver",
]
[[package]] [[package]]
name = "web-sys" name = "web-sys"
version = "0.3.91" version = "0.3.91"
@@ -2830,6 +3339,88 @@ name = "wit-bindgen"
version = "0.51.0" version = "0.51.0"
source = "registry+https://github.com/rust-lang/crates.io-index" source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "d7249219f66ced02969388cf2bb044a09756a083d0fab1e566056b04d9fbcaa5" checksum = "d7249219f66ced02969388cf2bb044a09756a083d0fab1e566056b04d9fbcaa5"
dependencies = [
"wit-bindgen-rust-macro",
]
[[package]]
name = "wit-bindgen-core"
version = "0.51.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "ea61de684c3ea68cb082b7a88508a8b27fcc8b797d738bfc99a82facf1d752dc"
dependencies = [
"anyhow",
"heck",
"wit-parser",
]
[[package]]
name = "wit-bindgen-rust"
version = "0.51.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "b7c566e0f4b284dd6561c786d9cb0142da491f46a9fbed79ea69cdad5db17f21"
dependencies = [
"anyhow",
"heck",
"indexmap",
"prettyplease",
"syn",
"wasm-metadata",
"wit-bindgen-core",
"wit-component",
]
[[package]]
name = "wit-bindgen-rust-macro"
version = "0.51.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "0c0f9bfd77e6a48eccf51359e3ae77140a7f50b1e2ebfe62422d8afdaffab17a"
dependencies = [
"anyhow",
"prettyplease",
"proc-macro2",
"quote",
"syn",
"wit-bindgen-core",
"wit-bindgen-rust",
]
[[package]]
name = "wit-component"
version = "0.244.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "9d66ea20e9553b30172b5e831994e35fbde2d165325bec84fc43dbf6f4eb9cb2"
dependencies = [
"anyhow",
"bitflags",
"indexmap",
"log",
"serde",
"serde_derive",
"serde_json",
"wasm-encoder",
"wasm-metadata",
"wasmparser",
"wit-parser",
]
[[package]]
name = "wit-parser"
version = "0.244.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "ecc8ac4bc1dc3381b7f59c34f00b67e18f910c2c0f50015669dde7def656a736"
dependencies = [
"anyhow",
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"serde",
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"serde_json",
"unicode-xid",
"wasmparser",
]
[[package]] [[package]]
name = "xml-rs" name = "xml-rs"
@@ -2857,8 +3448,140 @@ dependencies = [
"syn", "syn",
] ]
[[package]]
name = "zeroize"
version = "1.8.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
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dependencies = [
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name = "zeroize_derive"
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"quote",
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]
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name = "zip"
version = "0.6.6"
source = "registry+https://github.com/rust-lang/crates.io-index"
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dependencies = [
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"byteorder",
"bzip2 0.4.4",
"constant_time_eq 0.1.5",
"crc32fast",
"crossbeam-utils",
"flate2",
"hmac",
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name = "zip"
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2
hod_1/Cargo.toml
View File

@@ -8,3 +8,5 @@ burn = { version = "0.20.1", default-features = false, features = ["ndarray"] }
burn-ndarray = "0.20.1" burn-ndarray = "0.20.1"
clap = { version = "4.5.60", features = ["derive"] } clap = { version = "4.5.60", features = ["derive"] }
ndarray = "0.17.2" ndarray = "0.17.2"
npyz = { version = "0.8.4", features = ["npz"] }
zip = { version = "8.2.0", features = ["deflate"] }

96
hod_1/src/lib.rs
View File

@@ -1,63 +1,57 @@
use burn::tensor::Tensor; use burn::tensor::Tensor;
use std::collections::HashMap; use burn::tensor::linalg::diag;
use std::fs::File; use burn::tensor::Shape;
use std::io::{BufRead, BufReader};
pub type B = burn_ndarray::NdArray<f64>; pub type B = burn_ndarray::NdArray<f64>;
// Funkcia na načítanie a zarovnanie dát fn l2_norm(v: Tensor<B, 1>) -> f64 {
pub fn load_and_align(data_path: &str, model_path: &str) -> (Vec<f64>, Vec<f64>) { v.clone()
let mut counts = HashMap::new(); .mul(v) // element-wise: v_i * v_i
let mut total_count = 0.0; .sum() // suma všetkých v_i^2
.sqrt() // odmocnina
let file_p = File::open(data_path).expect("Nepodarilo sa otvoriť dáta"); .into_scalar() // na f32
for line in BufReader::new(file_p).lines() {
let point = line.unwrap().trim().to_string();
if point.is_empty() { continue; }
*counts.entry(point).or_insert(0.0) += 1.0;
total_count += 1.0;
}
let mut model_map = HashMap::new();
let file_q = File::open(model_path).expect("Nepodarilo sa otvoriť model");
for line in BufReader::new(file_q).lines() {
let l = line.unwrap();
let parts: Vec<&str> = l.split('\t').collect();
if parts.len() >= 2 {
model_map.insert(parts[0].to_string(), parts[1].parse::<f64>().unwrap());
}
}
let mut p_vals = Vec::new();
let mut q_vals = Vec::new();
for (point, count) in counts.iter() {
p_vals.push(count / total_count);
q_vals.push(*model_map.get(point).unwrap_or(&0.0));
}
(p_vals, q_vals)
} }
pub fn entropy(p: Tensor<B, 1>) -> f64 { /// Input: [N, 784], Output: [N, 784]
let zero_mask = p.clone().equal_elem(0.0); pub fn center(x: Tensor<B, 2>) -> Tensor<B, 2> {
let p_safe = p.clone().mask_fill(zero_mask, 1.0); let mean = x.clone().mean_dim(0);
let terms = p * p_safe.log(); x.sub(mean)
-terms.sum().into_scalar()
} }
pub fn cross_entropy(p: Tensor<B, 1>, q: Tensor<B, 1>) -> f64 { /// Input: [N, 784], Output: [784, 784]
let zero_mask_q = q.clone().equal_elem(0.0); pub fn covariance(x: Tensor<B, 2>) -> Tensor<B, 2> {
let p_exists = p.clone().greater_elem(0.0); let cen = center(x);
if p_exists.bool_and(zero_mask_q.clone()).any().into_scalar() { let transpose = cen.clone().transpose();
return f64::INFINITY; let n = cen.dims()[0] as f64;
let mul = transpose.matmul(cen);
mul.div_scalar(n - 1.0)
}
pub fn total_variance(x: Tensor<B, 2>) -> f64 {
let cov: Tensor<B, 2> = covariance(x);
let diag: Tensor<B, 1> = diag(cov);
let sum = diag.sum().into_scalar();
sum
}
/// Input: [784, 784], scalar, Output: [784]
pub fn power_iteration(cov: Tensor<B, 2>, iterations: usize) -> (Tensor<B, 1>, f64) {
let n = cov.dims()[0];
let device = cov.device();
let mut v: Tensor<B, 1> = Tensor::ones(Shape::new([n]), &device);
let mut s: f64 = 0.0;
for _ in 0..iterations {
let v_new_2d = cov.clone().matmul(v.reshape([n, 1]));
let v_new = v_new_2d.squeeze::<1>();
s = l2_norm(v_new.clone());
v = v_new.div_scalar(s);
} }
let q_safe = q.mask_fill(zero_mask_q, 1.0); return (v, s);
let terms = p * q_safe.log();
-terms.sum().into_scalar()
} }
pub fn kl_div2(p: Tensor<B, 1>, q: Tensor<B, 1>) -> f64 { /// Input: [784, 784], [784], Output: f32
let ce = cross_entropy(p.clone(), q); pub fn explained_variance(total_var: f64, s: f64) -> f64 {
let e = entropy(p); s / total_var
let result = ce - e;
if result < 0.0 { 0.0 } else { result }
} }

86
hod_1/src/main.rs
View File

@@ -1,30 +1,86 @@
use burn::tensor::{backend::Backend, Tensor}; use burn::tensor::backend::Backend;
use burn::tensor::Tensor;
use clap::Parser; use clap::Parser;
// Nahraď 'hod_1' názvom tvojho projektu v Cargo.toml use hod_1::{covariance, explained_variance, power_iteration, total_variance, B};
use hod_1::{load_and_align, entropy, cross_entropy, kl_div2, B}; use std::fs::File;
use std::io::Read;
#[derive(Parser, Debug)] #[derive(Parser, Debug)]
#[command(author, version, about, long_about = None)] #[command(author, version, about, long_about = None)]
struct Args { struct Args {
#[arg(long = "data_path")] #[arg(long = "examples", default_value = "1024")]
data_path: String, examples: usize,
#[arg(long = "iterations", default_value = "64")]
iterations: usize,
}
#[arg(long = "model_path")] fn load_mnist(examples: usize, device: &<B as Backend>::Device) -> Tensor<B, 2> {
model_path: String, let file = File::open("mnist.npz").expect("Cannot open mnist.npz");
let mut archive = zip::ZipArchive::new(file).expect("Cannot read zip");
// Print all available array names so you can see what's inside
eprintln!("Arrays in mnist.npz:");
for i in 0..archive.len() {
eprintln!(" {}", archive.by_index(i).unwrap().name());
}
// Try the most common key names used for MNIST train images
let candidates = [
"train_images.npy",
"train.images.npy",
"x_train.npy",
"images.npy",
];
let mut bytes = Vec::new();
let mut found_name = "";
for name in &candidates {
if archive.by_name(name).is_ok() {
archive
.by_name(name)
.unwrap()
.read_to_end(&mut bytes)
.expect("Failed to read entry");
found_name = name;
break;
}
}
assert!(!bytes.is_empty(), "Could not find train images — check the printed names above and update candidates[]");
eprintln!("Loaded from: {found_name}");
// Parse the .npy header to get the shape
let npy = npyz::NpyFile::new(&bytes[..]).expect("Cannot parse npy");
let shape = npy.shape().to_vec();
eprintln!("Raw array shape: {shape:?}");
// MNIST is stored as uint8 (0–255); we normalise to [0.0, 1.0]
let raw: Vec<u8> = npy.into_vec().expect("Failed to read as u8 — dtype mismatch?");
let n = examples.min(shape[0] as usize);
let pixels = raw.len() / shape[0] as usize; // 784 = 1*28*28, regardless of how axes are ordered
let data: Vec<f64> = raw[..n * pixels]
.iter()
.map(|&p| p as f64 / 255.0)
.collect();
eprintln!("Loaded {n} examples, {pixels} pixels each");
let tensor_data = burn::tensor::TensorData::new(data, [n, pixels]);
Tensor::<B, 2>::from_data(tensor_data, device)
} }
fn main() { fn main() {
let args = Args::parse(); let args = Args::parse();
let device = <B as Backend>::Device::default(); let device = <B as Backend>::Device::default();
// Použijeme funkciu z lib.rs let x = load_mnist(args.examples, &device);
let (p_vec, q_vec) = load_and_align(&args.data_path, &args.model_path);
let p = Tensor::<B, 1>::from_data(p_vec.as_slice(), &device); let cov = covariance(x.clone());
let q = Tensor::<B, 1>::from_data(q_vec.as_slice(), &device); let total_var = total_variance(x.clone());
let (_pc, s) = power_iteration(cov, args.iterations);
let ev = explained_variance(total_var, s);
// Výpočty println!("Total variance: {:.2}", total_var);
println!("{}", entropy(p.clone())); println!("Explained variance: {:.2}%", 100.0 * ev);
println!("{}", cross_entropy(p.clone(), q.clone()));
println!("{}", kl_div2(p, q));
} }