-
Notifications
You must be signed in to change notification settings - Fork 0
/
Copy pathindex.html
986 lines (378 loc) · 22.7 KB
/
index.html
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
<!DOCTYPE html>
<html class="theme-next pisces use-motion" lang="">
<head>
<meta charset="UTF-8"/>
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1"/>
<meta name="theme-color" content="#222">
<meta http-equiv="Cache-Control" content="no-transform" />
<meta http-equiv="Cache-Control" content="no-siteapp" />
<link href="/lib/fancybox/source/jquery.fancybox.css?v=2.1.5" rel="stylesheet" type="text/css" />
<link href="/lib/font-awesome/css/font-awesome.min.css?v=4.6.2" rel="stylesheet" type="text/css" />
<link href="/css/main.css?v=5.1.4" rel="stylesheet" type="text/css" />
<link rel="apple-touch-icon" sizes="180x180" href="/images/apple-touch-icon-next.png?v=5.1.4">
<link rel="icon" type="image/png" sizes="32x32" href="/images/favicon-32x32-next.png?v=5.1.4">
<link rel="icon" type="image/png" sizes="16x16" href="/images/favicon-16x16-next.png?v=5.1.4">
<link rel="mask-icon" href="/images/logo.svg?v=5.1.4" color="#222">
<meta name="keywords" content="Hexo, NexT" />
<link rel="alternate" href="/atom.xml" title="zhouzhongmi" type="application/atom+xml" />
<meta property="og:type" content="website">
<meta property="og:title" content="zhouzhongmi">
<meta property="og:url" content="http://www.zhouzhongmi.com/index.html">
<meta property="og:site_name" content="zhouzhongmi">
<meta property="og:locale" content="default">
<meta name="twitter:card" content="summary">
<meta name="twitter:title" content="zhouzhongmi">
<script type="text/javascript" id="hexo.configurations">
var NexT = window.NexT || {};
var CONFIG = {
root: '/',
scheme: 'Pisces',
version: '5.1.4',
sidebar: {"position":"left","display":"post","offset":12,"b2t":false,"scrollpercent":false,"onmobile":false},
fancybox: true,
tabs: true,
motion: {"enable":true,"async":false,"transition":{"post_block":"fadeIn","post_header":"slideDownIn","post_body":"slideDownIn","coll_header":"slideLeftIn","sidebar":"slideUpIn"}},
duoshuo: {
userId: '0',
author: 'Author'
},
algolia: {
applicationID: '',
apiKey: '',
indexName: '',
hits: {"per_page":10},
labels: {"input_placeholder":"Search for Posts","hits_empty":"We didn't find any results for the search: ${query}","hits_stats":"${hits} results found in ${time} ms"}
}
};
</script>
<link rel="canonical" href="http://www.zhouzhongmi.com/"/>
<title>zhouzhongmi</title>
</head>
<body itemscope itemtype="http://schema.org/WebPage" lang="default">
<div class="container sidebar-position-left
page-home">
<div class="headband"></div>
<header id="header" class="header" itemscope itemtype="http://schema.org/WPHeader">
<div class="header-inner"><div class="site-brand-wrapper">
<div class="site-meta ">
<div class="custom-logo-site-title">
<a href="/" class="brand" rel="start">
<span class="logo-line-before"><i></i></span>
<span class="site-title">zhouzhongmi</span>
<span class="logo-line-after"><i></i></span>
</a>
</div>
<p class="site-subtitle"></p>
</div>
<div class="site-nav-toggle">
<button>
<span class="btn-bar"></span>
<span class="btn-bar"></span>
<span class="btn-bar"></span>
</button>
</div>
</div>
<nav class="site-nav">
<ul id="menu" class="menu">
<li class="menu-item menu-item-home">
<a href="/" rel="section">
<i class="menu-item-icon fa fa-fw fa-home"></i> <br />
Home
</a>
</li>
<li class="menu-item menu-item-about">
<a href="/about/" rel="section">
<i class="menu-item-icon fa fa-fw fa-user"></i> <br />
About
</a>
</li>
<li class="menu-item menu-item-tags">
<a href="/tags/" rel="section">
<i class="menu-item-icon fa fa-fw fa-tags"></i> <br />
Tags
</a>
</li>
<li class="menu-item menu-item-categories">
<a href="/categories/" rel="section">
<i class="menu-item-icon fa fa-fw fa-th"></i> <br />
Categories
</a>
</li>
<li class="menu-item menu-item-archives">
<a href="/archives/" rel="section">
<i class="menu-item-icon fa fa-fw fa-archive"></i> <br />
Archives
</a>
</li>
</ul>
</nav>
</div>
</header>
<main id="main" class="main">
<div class="main-inner">
<div class="content-wrap">
<div id="content" class="content">
<section id="posts" class="posts-expand">
<article class="post post-type-normal" itemscope itemtype="http://schema.org/Article">
<div class="post-block">
<link itemprop="mainEntityOfPage" href="http://www.zhouzhongmi.com/2018/05/20/Introduction-to-Functional-Interfaces-–-A-concept-recreated-in-Java-8/">
<span hidden itemprop="author" itemscope itemtype="http://schema.org/Person">
<meta itemprop="name" content="Mi Zhou">
<meta itemprop="description" content="">
<meta itemprop="image" content="/images/avatar.gif">
</span>
<span hidden itemprop="publisher" itemscope itemtype="http://schema.org/Organization">
<meta itemprop="name" content="zhouzhongmi">
</span>
<header class="post-header">
<h1 class="post-title" itemprop="name headline">
<a class="post-title-link" href="/2018/05/20/Introduction-to-Functional-Interfaces-–-A-concept-recreated-in-Java-8/" itemprop="url">Introduction to Functional Interfaces – A concept recreated in Java 8</a></h1>
<div class="post-meta">
<span class="post-time">
<span class="post-meta-item-icon">
<i class="fa fa-calendar-o"></i>
</span>
<span class="post-meta-item-text">Posted on</span>
<time title="Post created" itemprop="dateCreated datePublished" datetime="2018-05-20T06:32:41+00:00">
2018-05-20
</time>
</span>
</div>
</header>
<div class="post-body" itemprop="articleBody">
<h2 id="Introduction-to-Functional-Interfaces-–-A-concept-recreated-in-Java-8"><a href="#Introduction-to-Functional-Interfaces-–-A-concept-recreated-in-Java-8" class="headerlink" title="Introduction to Functional Interfaces – A concept recreated in Java 8"></a>Introduction to Functional Interfaces – A concept recreated in Java 8</h2><p><a href="https://sanaulla.info/2013/03/21/introduction-to-functional-interfaces-a-concept-recreated-in-java-8/" target="_blank" rel="noopener">原文地址</a></p>
<p><strong><em>Interpreted by zhouzhongmi</em></strong></p>
<p>全世界的Java开发者都至少使用过一次下面的接口:</p>
<ul>
<li>java.lang.Runnable</li>
<li>java.awt.event.ActionListener</li>
<li>java.util.Comparator</li>
<li>java.concurrent.Callable</li>
</ul>
<p>这些接口具有一个共同的特点，那就是每个接口定义中只声明了一个方法，在JDK中有很多这样的接口，并且java开发者定义了更多这样的接口，这些方法也叫作单抽象方法接口(<strong>S</strong>ingle <strong>A</strong>bstract <strong>M</strong>ethod interfaces,<strong>SAM</strong> interfaces)，实现这类接口的一个匿名的内部类是使用这类接口的一个常用方式：</p>
<pre><code>public class AnonymousInnerClassTest {
public static void main(String[] args) {
new Thread(new Runnable() {
@Override
public void run() {
System.out.println("A thread created and running ...");
}
}).start();
}
}
</code></pre><p>在Java8中，这类被重新创造的单方法接口被叫做<strong>Functional interfaces</strong>(函数式接口)，它们能用Lambda表达式、方法引用和构造函数引用进行表示(作者会在随后的博客中讨论这两个主题)。 这里引入了一个注解<strong>@FunctionalInterface</strong>，用于在编译期检测修饰的接口是否是一个函数式接口。 让我们来看看只有单个抽象方法的函数是接口：</p>
<pre><code>@FunctionalInterface
public interface SimpleFuncInterface {
public void doWork();
}
</code></pre><p>在声明了单抽象方法的接口中，即使同时声明了来自java.lang.Object中的抽象方法，也仍然是函数式接口：</p>
<pre><code>@FunctionalInterface
public interface SimpleFuncInterface {
public void doWork();
public String toString();
public boolean equals(Object o);
}
</code></pre><p>当你在函数式接口中声明了另外的抽象方法时，编译器或IDE会提示错误：<br><img src="https://sanaulla.files.wordpress.com/2013/03/funcinterface_error1.jpg" alt=""></p>
<p>当子接口继承了函数式接口后，没有添加任何抽象方法，那么子接口也是函数式接口。 接口如果只有一个抽象方法和若干个默认方法，仍然可以称作是函数式接口。</p>
<pre><code>@FunctionalInterface
public interface ComplexFunctionalInterface extends SimpleFuncInterface {
default public void doSomeWork(){
System.out.println("Doing some work in interface impl...");
}
default public void doSomeOtherWork(){
System.out.println("Doing some other work in interface impl...");
}
}
</code></pre><p>上面的接口仍然是一个合法的函数式接口。 下面让我们来看看lambda表达式和匿名内部类如何实现函数式接口：</p>
<pre><code>/*
* Implementing the interface by creating an
* anonymous inner class versus using
* lambda expression.
*/
public class SimpleFunInterfaceTest {
public static void main(String[] args) {
carryOutWork(new SimpleFuncInterface() {
@Override
public void doWork() {
System.out.println("Do work in SimpleFun impl...");
}
});
carryOutWork(() -> System.out.println("Do work in lambda exp impl..."));
}
public static void carryOutWork(SimpleFuncInterface sfi){
sfi.doWork();
}
}
</code></pre><p>输出为：</p>
<pre><code>Do work in SimpleFun impl...
Do work in lambda exp impl...
</code></pre><p>如果你使用的IDE支持lambda表达式语法检测，那么像上面那样在使用匿名内部类时会进行提示：<br><img src="https://sanaulla.files.wordpress.com/2013/03/funcinterface_hint.jpg" alt=""></p>
<p>上面只是对Java8中函数式接口概念及其如何使用lambda实现的一个简短介绍。</p>
</div>
<footer class="post-footer">
<div class="post-eof"></div>
</footer>
</div>
</article>
<article class="post post-type-normal" itemscope itemtype="http://schema.org/Article">
<div class="post-block">
<link itemprop="mainEntityOfPage" href="http://www.zhouzhongmi.com/2018/05/14/Support-vector-machine/">
<span hidden itemprop="author" itemscope itemtype="http://schema.org/Person">
<meta itemprop="name" content="Mi Zhou">
<meta itemprop="description" content="">
<meta itemprop="image" content="/images/avatar.gif">
</span>
<span hidden itemprop="publisher" itemscope itemtype="http://schema.org/Organization">
<meta itemprop="name" content="zhouzhongmi">
</span>
<header class="post-header">
<h1 class="post-title" itemprop="name headline">
<a class="post-title-link" href="/2018/05/14/Support-vector-machine/" itemprop="url">Support vector machine</a></h1>
<div class="post-meta">
<span class="post-time">
<span class="post-meta-item-icon">
<i class="fa fa-calendar-o"></i>
</span>
<span class="post-meta-item-text">Posted on</span>
<time title="Post created" itemprop="dateCreated datePublished" datetime="2018-05-14T09:00:22+00:00">
2018-05-14
</time>
</span>
</div>
</header>
<div class="post-body" itemprop="articleBody">
<h2 id="支持向量机（SVM）"><a href="#支持向量机（SVM）" class="headerlink" title="支持向量机（SVM）"></a>支持向量机（SVM）</h2><h3 id="本质"><a href="#本质" class="headerlink" title="本质"></a>本质</h3><p>将低维线性不可分样本空间映射到高维线性可分的空间，找到最优的线性分类面（hyper plane），借助核函数进行低维到高维空间的映射，以及将高维空间内向量的内积简化为低维空间向量的内积运算。</p>
<p>其中，在寻找最优分类面时，根据间距最小，推导出目标函数和约束条件，继而转化为二次优化问题，在原问题满足KKT条件时，获得原优化问题的对偶问题，求解对偶问题获得局部或全局最优解，即可求得原问题的局部或全局最优解。</p>
<h3 id="分析步骤"><a href="#分析步骤" class="headerlink" title="分析步骤"></a>分析步骤</h3><ol>
<li>使用<strong>R^n</strong>维向量描述样本特征，也即是样本特征向量的选取和归一化；</li>
<li>根据样本类别设置分类标签；</li>
<li>选取核函数和对应模型参数；</li>
<li>对测试数据进行模型训练和交叉验证，评价模型效果；</li>
<li>对未知数据进行预测；</li>
</ol>
</div>
<footer class="post-footer">
<div class="post-eof"></div>
</footer>
</div>
</article>
<article class="post post-type-normal" itemscope itemtype="http://schema.org/Article">
<div class="post-block">
<link itemprop="mainEntityOfPage" href="http://www.zhouzhongmi.com/2018/05/14/hello-world/">
<span hidden itemprop="author" itemscope itemtype="http://schema.org/Person">
<meta itemprop="name" content="Mi Zhou">
<meta itemprop="description" content="">
<meta itemprop="image" content="/images/avatar.gif">
</span>
<span hidden itemprop="publisher" itemscope itemtype="http://schema.org/Organization">
<meta itemprop="name" content="zhouzhongmi">
</span>
<header class="post-header">
<h1 class="post-title" itemprop="name headline">
<a class="post-title-link" href="/2018/05/14/hello-world/" itemprop="url">Hello World</a></h1>
<div class="post-meta">
<span class="post-time">
<span class="post-meta-item-icon">
<i class="fa fa-calendar-o"></i>
</span>
<span class="post-meta-item-text">Posted on</span>
<time title="Post created" itemprop="dateCreated datePublished" datetime="2018-05-14T05:57:36+00:00">
2018-05-14
</time>
</span>
</div>
</header>
<div class="post-body" itemprop="articleBody">
<p>Welcome to <a href="https://hexo.io/" target="_blank" rel="noopener">Hexo</a>! This is your very first post. Check <a href="https://hexo.io/docs/" target="_blank" rel="noopener">documentation</a> for more info. If you get any problems when using Hexo, you can find the answer in <a href="https://hexo.io/docs/troubleshooting.html" target="_blank" rel="noopener">troubleshooting</a> or you can ask me on <a href="https://github.com/hexojs/hexo/issues" target="_blank" rel="noopener">GitHub</a>.</p>
<h2 id="Quick-Start"><a href="#Quick-Start" class="headerlink" title="Quick Start"></a>Quick Start</h2><h3 id="Create-a-new-post"><a href="#Create-a-new-post" class="headerlink" title="Create a new post"></a>Create a new post</h3><figure class="highlight bash"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">$ hexo new <span class="string">"My New Post"</span></span><br></pre></td></tr></table></figure>
<p>More info: <a href="https://hexo.io/docs/writing.html" target="_blank" rel="noopener">Writing</a></p>
<h3 id="Run-server"><a href="#Run-server" class="headerlink" title="Run server"></a>Run server</h3><figure class="highlight bash"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">$ hexo server</span><br></pre></td></tr></table></figure>
<p>More info: <a href="https://hexo.io/docs/server.html" target="_blank" rel="noopener">Server</a></p>
<h3 id="Generate-static-files"><a href="#Generate-static-files" class="headerlink" title="Generate static files"></a>Generate static files</h3><figure class="highlight bash"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">$ hexo generate</span><br></pre></td></tr></table></figure>
<p>More info: <a href="https://hexo.io/docs/generating.html" target="_blank" rel="noopener">Generating</a></p>
<h3 id="Deploy-to-remote-sites"><a href="#Deploy-to-remote-sites" class="headerlink" title="Deploy to remote sites"></a>Deploy to remote sites</h3><figure class="highlight bash"><table><tr><td class="gutter"><pre><span class="line">1</span><br></pre></td><td class="code"><pre><span class="line">$ hexo deploy</span><br></pre></td></tr></table></figure>
<p>More info: <a href="https://hexo.io/docs/deployment.html" target="_blank" rel="noopener">Deployment</a></p>
</div>
<footer class="post-footer">
<div class="post-eof"></div>
</footer>
</div>
</article>
</section>
</div>
</div>
<div class="sidebar-toggle">
<div class="sidebar-toggle-line-wrap">
<span class="sidebar-toggle-line sidebar-toggle-line-first"></span>
<span class="sidebar-toggle-line sidebar-toggle-line-middle"></span>
<span class="sidebar-toggle-line sidebar-toggle-line-last"></span>
</div>
</div>
<aside id="sidebar" class="sidebar">
<div class="sidebar-inner">
<section class="site-overview-wrap sidebar-panel sidebar-panel-active">
<div class="site-overview">
<div class="site-author motion-element" itemprop="author" itemscope itemtype="http://schema.org/Person">
<p class="site-author-name" itemprop="name">Mi Zhou</p>
<p class="site-description motion-element" itemprop="description"></p>
</div>
<nav class="site-state motion-element">
<div class="site-state-item site-state-posts">
<a href="/archives/">
<span class="site-state-item-count">3</span>
<span class="site-state-item-name">posts</span>
</a>
</div>
<div class="site-state-item site-state-tags">
<span class="site-state-item-count">1</span>
<span class="site-state-item-name">tags</span>
</div>
</nav>
<div class="feed-link motion-element">
<a href="/atom.xml" rel="alternate">
<i class="fa fa-rss"></i>
RSS
</a>
</div>
</div>
</section>
</div>
</aside>
</div>
</main>
<footer id="footer" class="footer">
<div class="footer-inner">
<div class="copyright">© <span itemprop="copyrightYear">2018</span>
<span class="with-love">
<i class="fa fa-user"></i>
</span>
<span class="author" itemprop="copyrightHolder">Mi Zhou</span>
</div>
<div class="powered-by">Powered by <a class="theme-link" target="_blank" href="https://hexo.io">Hexo</a></div>
<span class="post-meta-divider">|</span>
<div class="theme-info">Theme — <a class="theme-link" target="_blank" href="https://github.com/iissnan/hexo-theme-next">NexT.Pisces</a> v5.1.4</div>
</div>
</footer>
<div class="back-to-top">
<i class="fa fa-arrow-up"></i>
</div>
</div>
<script type="text/javascript">
if (Object.prototype.toString.call(window.Promise) !== '[object Function]') {
window.Promise = null;
}
</script>
<script type="text/javascript" src="/lib/jquery/index.js?v=2.1.3"></script>
<script type="text/javascript" src="/lib/fastclick/lib/fastclick.min.js?v=1.0.6"></script>
<script type="text/javascript" src="/lib/jquery_lazyload/jquery.lazyload.js?v=1.9.7"></script>
<script type="text/javascript" src="/lib/velocity/velocity.min.js?v=1.2.1"></script>
<script type="text/javascript" src="/lib/velocity/velocity.ui.min.js?v=1.2.1"></script>
<script type="text/javascript" src="/lib/fancybox/source/jquery.fancybox.pack.js?v=2.1.5"></script>
<script type="text/javascript" src="/js/src/utils.js?v=5.1.4"></script>
<script type="text/javascript" src="/js/src/motion.js?v=5.1.4"></script>
<script type="text/javascript" src="/js/src/affix.js?v=5.1.4"></script>
<script type="text/javascript" src="/js/src/schemes/pisces.js?v=5.1.4"></script>
<script type="text/javascript" src="/js/src/bootstrap.js?v=5.1.4"></script>
</body>
</html>