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vw_example.h
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1 /*
2  * Copyright (c) 2009 Yahoo! Inc. All rights reserved. The copyrights
3  * embodied in the content of this file are licensed under the BSD
4  * (revised) open source license.
5  *
6  * This program is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License as published by
8  * the Free Software Foundation; either version 3 of the License, or
9  * (at your option) any later version.
10  *
11  * Written (W) 2011 Shashwat Lal Das
12  * Copyright (C) 2011 Berlin Institute of Technology and Max-Planck-Society.
13  */
14 
15 #ifndef _VW_EXAMPLE_H__
16 #define _VW_EXAMPLE_H__
17 
18 #include <shogun/lib/DataType.h>
19 #include <shogun/lib/common.h>
20 #include <shogun/lib/v_array.h>
23 
24 namespace shogun
25 {
26 
32 class VwFeature
33 {
34 public:
37 
39  uint32_t weight_index;
40 
48  bool operator==(VwFeature j) { return weight_index == j.weight_index; }
49 };
50 
56 class VwExample
57 {
58 public:
62  VwExample();
63 
67  ~VwExample();
68 
73  void reset_members();
74 
75 public:
78 
85 
100 
105 
109  bool sorted;
110 };
111 
112 }
113 #endif // _VW_EXAMPLE_H__
uint32_t weight_index
Hashed index in weight vector.
Definition: vw_example.h:39
uint32_t vw_size_t
vw_size_t typedef to work across platforms
Definition: vw_constants.h:24
vw_size_t num_features
Number of features.
Definition: vw_example.h:87
float32_t total_sum_feat_sq
Total sum of square of features.
Definition: vw_example.h:104
float64_t sum_feat_sq[256]
Sum of square of features.
Definition: vw_example.h:102
float32_t loss
Loss.
Definition: vw_example.h:93
vw_size_t pass
Pass.
Definition: vw_example.h:89
v_array< vw_size_t > indices
Array of namespaces.
Definition: vw_example.h:82
Class VwLabel holds a label object used by VW.
Definition: vw_label.h:32
double float64_t
Definition: common.h:48
float32_t final_prediction
Final prediction.
Definition: vw_example.h:91
v_array< char > tag
Tag.
Definition: vw_example.h:80
vw_size_t example_counter
Example counter.
Definition: vw_example.h:107
bool sorted
Whether features are sorted by weight index.
Definition: vw_example.h:109
Example class for VW.
Definition: vw_example.h:56
float32_t example_t
t value for this example
Definition: vw_example.h:99
float float32_t
Definition: common.h:47
float32_t global_weight
Global weight.
Definition: vw_example.h:97
One feature in VW.
Definition: vw_example.h:32
float32_t x
Feature value.
Definition: vw_example.h:36
all of classes and functions are contained in the shogun namespace
Definition: class_list.h:16
VwLabel * ld
Label object.
Definition: vw_example.h:77
float32_t eta_round
Learning rate for this round.
Definition: vw_example.h:95
bool operator==(VwFeature j)
Definition: vw_example.h:48
v_array< VwFeature > atomics[256]
Array of features.
Definition: vw_example.h:84

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