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# はじめに 機械学習の初学の定番？のアヤメの分類をやってみました。 magicodeはipynbファイルをアップロードしてそのまま記事の載せられるようなので、試したかったというのが大きいのであま
7か月前
・3 min read
機械学習
scikit-learn
jupyter
Yoshi
クロスバリデーション: 推定値のパフォーマンスの評価
学習モデルの良し悪しは、予測関数のパラメーター自体を学習し、学習したものと同じデータでテストしたのでは判断することはできません。今見たサンプルのラベルを繰り返すだけのモデルは、100%正解なスコアを持
8か月前
・3 min read
Machine learning
scikit-learn
交差検証
Best Free Materials 4U
06 Figure Code
Many of the figures used throughout this text are created in-place by code that appears in print. In
15か月前
・56 min read
python
Matplotlib
Numpy
Best Free Materials 4U
05.15 Learning More
Further Machine Learning Resources This chapter has been a quick tour of machine learning in Python,
15か月前
・5 min read
python
Matplotlib
Numpy
Best Free Materials 4U
05.14 Image Features
Application: A Face Detection Pipeline This chapter has explored a number of the central concepts an
15か月前
・18 min read
python
Matplotlib
Numpy
Best Free Materials 4U
05.13 In Depth: Kernel Density Estimation
In the previous section we covered Gaussian mixture models (GMM), which are a kind of hybrid between
15か月前
・29 min read
python
Matplotlib
Numpy
Best Free Materials 4U
05.12 In Depth: Gaussian Mixtures
The k-means clustering model explored in the previous section is simple and relatively easy to under
15か月前
・21 min read
python
Matplotlib
Numpy
Best Free Materials 4U
05.11 In Depth: k-Means Clustering
In the previous few sections, we have explored one category of unsupervised machine learning models:
15か月前
・22 min read
python
Matplotlib
Numpy
Best Free Materials 4U
05.10 In Depth: Manifold Learning
We have seen how principal component analysis (PCA) can be used in the dimensionality reduction task
15か月前
・27 min read
python
Matplotlib
Numpy
Best Free Materials 4U
05.09 In Depth: Principal Component Analysis
Up until now, we have been looking in depth at supervised learning estimators: those estimators that
15か月前
・24 min read
python
Matplotlib
Numpy
Best Free Materials 4U
05.08 In Depth: Decision Trees and Random Forests
Previously we have looked in depth at a simple generative classifier (naive Bayes; see In Depth: Nai
15か月前
・17 min read
python
Matplotlib
Numpy
Best Free Materials 4U
05.07 In Depth: Support Vector Machines
Support vector machines (SVMs) are a particularly powerful and flexible class of supervised algorith
15か月前
・26 min read
python
Matplotlib
Numpy
Best Free Materials 4U
05.06 In Depth: Linear Regression
Just as naive Bayes (discussed earlier in In Depth: Naive Bayes Classification) is a good starting p
15か月前
・26 min read
python
Matplotlib
Numpy
Best Free Materials 4U
05.05 In Depth: Naive Bayes Classification
The previous four sections have given a general overview of the concepts of machine learning. In thi
15か月前
・16 min read
python
Matplotlib
Numpy
Best Free Materials 4U
05.04 Feature Engineering
The previous sections outline the fundamental ideas of machine learning, but all of the examples ass
15か月前
・16 min read
python
Matplotlib
Numpy
Best Free Materials 4U
05.03 Hyperparameters and Model Validation
In the previous section, we saw the basic recipe for applying a supervised machine learning model:
15か月前
・31 min read
python
Matplotlib
Numpy
Best Free Materials 4U
05.02 Introducing Scikit Learn
There are several Python libraries which provide solid implementations of a range of machine learnin
15か月前
・31 min read
python
Matplotlib
Numpy
Best Free Materials 4U
05.01 What Is Machine Learning
Before we take a look at the details of various machine learning methods, let's start by looking at
15か月前
・19 min read
python
Matplotlib
Numpy
Best Free Materials 4U
05 Machine Learning
In many ways, machine learning is the primary means by which data science manifests itself to the br
15か月前
・3 min read
python
Matplotlib
Numpy
Best Free Materials 4U
04.15 Further Resources
Matplotlib Resources A single chapter in a book can never hope to cover all the available features a
15か月前
・4 min read
python
Matplotlib
Numpy
Best Free Materials 4U
04.14 Visualization With Seaborn
Matplotlib has proven to be an incredibly useful and popular visualization tool, but even avid users
15か月前
・20 min read
python
Matplotlib
Numpy
Best Free Materials 4U
04.13 Geographic Data With Basemap
One common type of visualization in data science is that of geographic data. Matplotlib's main tool
15か月前
・22 min read
python
Matplotlib
Numpy
Best Free Materials 4U
04.12 Three Dimensional Plotting
Matplotlib was initially designed with only two-dimensional plotting in mind. Around the time of the
15か月前
・12 min read
python
Matplotlib
Numpy
Best Free Materials 4U
04.11 Settings and Stylesheets
Matplotlib's default plot settings are often the subject of complaint among its users. While much is
15か月前
・10 min read
python
Matplotlib
Numpy
Best Free Materials 4U
04.10 Customizing Ticks
Matplotlib's default tick locators and formatters are designed to be generally sufficient in many co
15か月前
・11 min read
python
Matplotlib
Numpy
Best Free Materials 4U
04.09 Text and Annotation
Creating a good visualization involves guiding the reader so that the figure tells a story. In some
15か月前
・14 min read
python
Matplotlib
Numpy
Best Free Materials 4U
04.08 Multiple Subplots
Sometimes it is helpful to compare different views of data side by side. To this end, Matplotlib has
15か月前
・9 min read
python
Matplotlib
Numpy
Best Free Materials 4U
04.07 Customizing Colorbars
Plot legends identify discrete labels of discrete points. For continuous labels based on the color o
15か月前
・12 min read
python
Matplotlib
Numpy
Best Free Materials 4U
04.06 Customizing Legends
Plot legends give meaning to a visualization, assigning meaning to the various plot elements. We pre
15か月前
・8 min read
python
Matplotlib
Numpy
Best Free Materials 4U
04.05 Histograms, Binnings, and Density
A simple histogram can be a great first step in understanding a dataset. Earlier, we saw a preview o
15か月前
・7 min read
python
Matplotlib
Numpy
Best Free Materials 4U
04.04 Density and Contour Plots
Sometimes it is useful to display three-dimensional data in two dimensions using contours or color-c
15か月前
・7 min read
python
Matplotlib
Numpy
Best Free Materials 4U
04.03 Errorbars
Visualizing Errors For any scientific measurement, accurate accounting for errors is nearly as impor
15か月前
・7 min read
python
Matplotlib
Numpy
Best Free Materials 4U
04.02 Simple Scatter Plots
Another commonly used plot type is the simple scatter plot, a close cousin of the line plot. Instead
15か月前
・7 min read
python
Matplotlib
Numpy
Best Free Materials 4U
04.01 Simple Line Plots
Perhaps the simplest of all plots is the visualization of a single function $y = f(x)$. Here we will
15か月前
・10 min read
python
Matplotlib
Numpy
Best Free Materials 4U
04 Introduction To Matplotlib
Visualization with Matplotlib We'll now take an in-depth look at the Matplotlib package for visualiz
15か月前
・15 min read
python
Matplotlib
Numpy
Best Free Materials 4U
03.13 Further Resources
In this chapter, we've covered many of the basics of using Pandas effectively for data analysis. Sti
15か月前
・3 min read
python
Matplotlib
Numpy
Best Free Materials 4U
03.12 Performance Eval and Query
As we've already seen in previous sections, the power of the PyData stack is built upon the ability
15か月前
・14 min read
python
Matplotlib
Numpy
Best Free Materials 4U
03.11 Working with Time Series
Pandas was developed in the context of financial modeling, so as you might expect, it contains a fai
15か月前
・38 min read
python
Matplotlib
Numpy
Best Free Materials 4U
03.10 Working With Strings
One strength of Python is its relative ease in handling and manipulating string data. Pandas builds
15か月前
・23 min read
python
Matplotlib
Numpy
Best Free Materials 4U
03.09 Pivot Tables
We have seen how the GroupBy abstraction lets us explore relationships within a dataset. A pivot tab
15か月前
・18 min read
python
Matplotlib
Numpy
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