| <!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="This module implements the data loader."><meta name="keywords" content="rust, rustlang, rust-lang, input"><title>gbdt::input - Rust</title><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceSerif4-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../FiraSans-Regular.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../FiraSans-Medium.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceCodePro-Regular.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceSerif4-Bold.ttf.woff2"><link rel="preload" as="font" type="font/woff2" crossorigin href="../../SourceCodePro-Semibold.ttf.woff2"><link rel="stylesheet" href="../../normalize.css"><link rel="stylesheet" href="../../rustdoc.css" id="mainThemeStyle"><link rel="stylesheet" href="../../ayu.css" disabled><link rel="stylesheet" href="../../dark.css" disabled><link rel="stylesheet" href="../../light.css" id="themeStyle"><script id="default-settings" ></script><script src="../../storage.js"></script><script defer src="../../main.js"></script><noscript><link rel="stylesheet" href="../../noscript.css"></noscript><link rel="alternate icon" type="image/png" href="../../favicon-16x16.png"><link rel="alternate icon" type="image/png" href="../../favicon-32x32.png"><link rel="icon" type="image/svg+xml" href="../../favicon.svg"></head><body class="rustdoc mod"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="mobile-topbar"><button class="sidebar-menu-toggle">☰</button><a class="sidebar-logo" href="../../gbdt/index.html"><div class="logo-container"><img class="rust-logo" src="../../rust-logo.svg" alt="logo"></div></a><h2></h2></nav><nav class="sidebar"><a class="sidebar-logo" href="../../gbdt/index.html"><div class="logo-container"><img class="rust-logo" src="../../rust-logo.svg" alt="logo"></div></a><h2 class="location"><a href="#">Module input</a></h2><div class="sidebar-elems"><section><ul class="block"><li><a href="#structs">Structs</a></li><li><a href="#enums">Enums</a></li><li><a href="#functions">Functions</a></li></ul></section></div></nav><main><div class="width-limiter"><nav class="sub"><form class="search-form"><div class="search-container"><span></span><input class="search-input" name="search" autocomplete="off" spellcheck="false" placeholder="Click or press ‘S’ to search, ‘?’ for more options…" type="search"><div id="help-button" title="help" tabindex="-1"><a href="../../help.html">?</a></div><div id="settings-menu" tabindex="-1"><a href="../../settings.html" title="settings"><img width="22" height="22" alt="Change settings" src="../../wheel.svg"></a></div></div></form></nav><section id="main-content" class="content"><div class="main-heading"><h1 class="fqn">Module <a href="../index.html">gbdt</a>::<wbr><a class="mod" href="#">input</a><button id="copy-path" onclick="copy_path(this)" title="Copy item path to clipboard"><img src="../../clipboard.svg" width="19" height="18" alt="Copy item path"></button></h1><span class="out-of-band"><a class="srclink" href="../../src/gbdt/input.rs.html#1-579">source</a> · <a id="toggle-all-docs" href="javascript:void(0)" title="collapse all docs">[<span class="inner">−</span>]</a></span></div><details class="rustdoc-toggle top-doc" open><summary class="hideme"><span>Expand description</span></summary><div class="docblock"><p>This module implements the data loader.</p> |
| <p>Currently we support to kind of input format: csv format and libsvm data format.</p> |
| <h2 id="example"><a href="#example">Example</a></h2><h3 id="libsvm-format"><a href="#libsvm-format">LibSVM format</a></h3> |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>gbdt::input::InputFormat; |
| <span class="kw">use </span>gbdt::input; |
| <span class="kw">let </span>test_file = <span class="string">"data/xgb_binary_logistic/agaricus.txt.test"</span>; |
| <span class="kw">let </span><span class="kw-2">mut </span>fmt = input::InputFormat::txt_format(); |
| fmt.set_feature_size(<span class="number">126</span>); |
| fmt.set_delimeter(<span class="string">' '</span>); |
| <span class="kw">let </span>test_data = input::load(test_file, fmt);</code></pre></div> |
| <h3 id="csv-format"><a href="#csv-format">CSV format</a></h3> |
| <div class="example-wrap"><pre class="rust rust-example-rendered"><code><span class="kw">use </span>gbdt::input::InputFormat; |
| <span class="kw">use </span>gbdt::input; |
| <span class="kw">let </span>test_file = <span class="string">"data/xgb_multi_softmax/dermatology.data.test"</span>; |
| <span class="kw">let </span><span class="kw-2">mut </span>fmt = InputFormat::csv_format(); |
| fmt.set_feature_size(<span class="number">34</span>); |
| <span class="kw">let </span>test_data = input::load(test_file, fmt);</code></pre></div> |
| </div></details><h2 id="structs" class="small-section-header"><a href="#structs">Structs</a></h2><div class="item-table"><div class="item-row"><div class="item-left module-item"><a class="struct" href="struct.InputFormat.html" title="gbdt::input::InputFormat struct">InputFormat</a></div><div class="item-right docblock-short">The input file format struct.</div></div></div><h2 id="enums" class="small-section-header"><a href="#enums">Enums</a></h2><div class="item-table"><div class="item-row"><div class="item-left module-item"><a class="enum" href="enum.FileFormat.html" title="gbdt::input::FileFormat enum">FileFormat</a></div><div class="item-right docblock-short">This enum type defines the data file format.</div></div></div><h2 id="functions" class="small-section-header"><a href="#functions">Functions</a></h2><div class="item-table"><div class="item-row"><div class="item-left module-item"><a class="fn" href="fn.infer.html" title="gbdt::input::infer fn">infer</a></div><div class="item-right docblock-short">Function used for input file type inference. This can help recognize the file format. |
| If the file is in csv type, this function also helps to check whether the csv file has |
| header.</div></div><div class="item-row"><div class="item-left module-item"><a class="fn" href="fn.load.html" title="gbdt::input::load fn">load</a></div><div class="item-right docblock-short">Load file with certain input format.</div></div><div class="item-row"><div class="item-left module-item"><a class="fn" href="fn.load_csv.html" title="gbdt::input::load_csv fn">load_csv</a></div><div class="item-right docblock-short">Load csv file.</div></div><div class="item-row"><div class="item-left module-item"><a class="fn" href="fn.load_txt.html" title="gbdt::input::load_txt fn">load_txt</a></div><div class="item-right docblock-short">Load txt file.</div></div></div></section></div></main><div id="rustdoc-vars" data-root-path="../../" data-current-crate="gbdt" data-themes="ayu,dark,light" data-resource-suffix="" data-rustdoc-version="1.66.0-nightly (5c8bff74b 2022-10-21)" ></div></body></html> |
