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Table of Contents Improving classification performance with Mel Frequency Cepstral Coefficients 193 Summary 197 Chapter 10: Computer Vision – Pattern Recognition 199 Introducing image processing 199 Loading and displaying images 200 Basic image processing 201 Thresholding 202 Gaussian blurring 205 Filtering for different effects 207 Adding salt and pepper noise 207 Putting the center in focus 208 Pattern recognition 210 Computing features from images 211 Writing your own features 212 Classifying a harder dataset 215 Local feature representations 216 Summary 219 Chapter 11: Dimensionality Reduction 221 Sketching our roadmap 222 Selecting features 222 Detecting redundant features using filters 223 Correlation 223 Mutual information 225 Asking the model about the features using wrappers 230 Other feature selection methods 232 Feature extraction 233 About principal component analysis (PCA) 233 Sketching PCA 234 Applying PCA 234 Limitations of PCA and how LDA can help 236 Multidimensional scaling (MDS) 237 Summary 240 Chapter 12: Big(ger) Data 241 Learning about big data 241 Using jug to break up your pipeline into tasks 242 About tasks 242 Reusing partial results 245 Looking under the hood 246 Using jug for data analysis 246 [ v ]
Table of Contents Using Amazon Web Services (AWS) 248 Creating your first machines 250 Installing Python packages on Amazon Linux 253 Running jug on our cloud machine 254 Automating the generation of clusters with starcluster 255 Summary 259 Appendix: Where to Learn More about Machine Learning 261 Online courses 261 Books 261 Q&A sites 262 Blogs 262 Data sources 263 Getting competitive 263 What was left out 264 Summary 264 Index 265 [ vi ]
Page 2 and 3: Building Machine Learning Systems w
Page 4 and 5: Credits Authors Willi Richert Luis
Page 6 and 7: Luis Pedro Coelho is a Computationa
Page 8 and 9: Maurice HT Ling completed his PhD.
Page 10 and 11: Table of Contents Preface 1 Chapter
Page 12 and 13: Table of Contents Tuning the instan
Page 16 and 17: Preface You could argue that it is
Page 18 and 19: Preface What you need for this book
Page 20: Downloading the example code You ca
Page 23 and 24: Getting Started with Python Machine
Page 48 and 49: Learning How to Classify with Real-
Page 50 and 51: Chapter 2 We are using Matplotlib;
Page 52 and 53: Chapter 2 The last few lines select
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Page 56 and 57: Chapter 2 We can play around with t
Page 58 and 59: Chapter 2 Features and feature engi
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Clustering - Finding Related Posts
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Chapter 3 How to do it More robust
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Chapter 3 This means that the first
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Chapter 3 ... post = posts[i] ... i
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Chapter 3 If you have a clear pictu
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Chapter 3 Extending the vectorizer
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Chapter 3 0.0 >>> print(tfidf("b",
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Chapter 3 Flat clustering divides t
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Because the cluster centers are mov
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Chapter 3 'D:\\data\\379\\raw\\comp
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As we have learned previously, we w
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Chapter 3 Position Similarity Excer
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Chapter 3 But before you go there,
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Topic Modeling For those who are in
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Topic Modeling Sparsity means that
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Topic Modeling Although daunting at
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Topic Modeling … for tj,v in t:
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Topic Modeling Finally, we build th
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Topic Modeling Alternatively, we ca
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Topic Modeling Topic modeling was f
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Classification - Detecting Poor Ans
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Classification II - Sentiment Analy
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Chapter 6 Getting to know the Bayes
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Using Naive Bayes to classify Given
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Chapter 6 This denotation "" leads
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Chapter 6 Similarly, we do this for
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Chapter 6 A quick look at the previ
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Chapter 6 To keep our experimentati
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Chapter 6 Y = np.zeros(Y.shape[0])
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Chapter 6 ° ° Experiment with whe
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Chapter 6 We have to be patient whe
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Chapter 6 First, we define a range
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Chapter 6 Determining the word type
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Chapter 6 Successfully cheating usi
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Chapter 6 Our first estimator Now w
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Chapter 6 for d in documents: allca
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Regression - Recommendations You ha
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Chapter 7 The preceding graph shows
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Chapter 7 Root mean squared error a
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Penalized regression The important
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Chapter 7 P greater than N scenario
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Chapter 7 So, we can see that the d
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Chapter 7 Fortunately, scikit-learn
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[ 161 ] Chapter 7 The loading of th
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Chapter 7 Summary In this chapter,
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Regression - Recommendations Improv
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Weights Regression - Recommendation
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Classification III - Music Genre Cl
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Chapter 9 Matplotlib provides the c
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[ 185 ] Chapter 9
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Chapter 9 def create_fft(fn): sampl
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Chapter 9 ax.set_yticks(range(len(g
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Chapter 9 On the left-hand side gra
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[ 193 ] Chapter 9 Improving classif
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We get the following promising resu
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Chapter 9 Summary In this chapter,
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Computer Vision - Pattern Recogniti
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Dimensionality Reduction Sketching
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Dimensionality Reduction However, t
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Dimensionality Reduction To underst
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Dimensionality Reduction In order t
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Dimensionality Reduction Asking the
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Dimensionality Reduction n_ feature
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Dimensionality Reduction Sketching
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Dimensionality Reduction Limitation
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Dimensionality Reduction Now, MDS t
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Dimensionality Reduction Of course,
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Big(ger) Data • Your algorithms c
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Big(ger) Data sleep(4) return 2*x @
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Big(ger) Data Looking under the hoo
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Big(ger) Data def write_result(ofna
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Big(ger) Data Amazon Web Services i
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Big(ger) Data In EC2 parlance, a ru
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Big(ger) Data In this system, pip i
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Big(ger) Data Keys, keys, and more
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Big(ger) Data We can use the same j
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Where to Learn More about Machine L
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• Machined Learnings at http://ww
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Index A AcceptedAnswerId attribute
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F false negative 41 false positive
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inary matrix of recommendations, us
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sklearn.naive_bayes package 127 skl
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NumPy Beginner's Guide - Second Edi
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