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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/config.h>
19 
20 #include <shogun/lib/DataType.h>
21 #include <shogun/lib/common.h>
22 #include <shogun/lib/v_array.h>
25 
26 namespace shogun
27 {
28 
34 class VwFeature
35 {
36 public:
39 
41  uint32_t weight_index;
42 
50  bool operator==(VwFeature j) { return weight_index == j.weight_index; }
51 };
52 
58 class VwExample
59 {
60 public:
64  VwExample();
65 
69  ~VwExample();
70 
75  void reset_members();
76 
77 public:
80 
87 
102 
107 
111  bool sorted;
112 };
113 
114 }
115 #endif // _VW_EXAMPLE_H__
uint32_t weight_index
Hashed index in weight vector.
Definition: vw_example.h:41
uint32_t vw_size_t
vw_size_t typedef to work across platforms
Definition: vw_constants.h:26
vw_size_t num_features
Number of features.
Definition: vw_example.h:89
float32_t total_sum_feat_sq
Total sum of square of features.
Definition: vw_example.h:106
float64_t sum_feat_sq[256]
Sum of square of features.
Definition: vw_example.h:104
float32_t loss
Loss.
Definition: vw_example.h:95
vw_size_t pass
Pass.
Definition: vw_example.h:91
v_array< vw_size_t > indices
Array of namespaces.
Definition: vw_example.h:84
Class VwLabel holds a label object used by VW.
Definition: vw_label.h:34
double float64_t
Definition: common.h:50
float32_t final_prediction
Final prediction.
Definition: vw_example.h:93
v_array< char > tag
Tag.
Definition: vw_example.h:82
vw_size_t example_counter
Example counter.
Definition: vw_example.h:109
bool sorted
Whether features are sorted by weight index.
Definition: vw_example.h:111
Example class for VW.
Definition: vw_example.h:58
float32_t example_t
t value for this example
Definition: vw_example.h:101
float float32_t
Definition: common.h:49
float32_t global_weight
Global weight.
Definition: vw_example.h:99
One feature in VW.
Definition: vw_example.h:34
float32_t x
Feature value.
Definition: vw_example.h:38
all of classes and functions are contained in the shogun namespace
Definition: class_list.h:18
VwLabel * ld
Label object.
Definition: vw_example.h:79
float32_t eta_round
Learning rate for this round.
Definition: vw_example.h:97
bool operator==(VwFeature j)
Definition: vw_example.h:50
v_array< VwFeature > atomics[256]
Array of features.
Definition: vw_example.h:86

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