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VwAdaptiveLearner.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  * Adaptation of Vowpal Wabbit v5.1.
13  * Copyright (C) 2011 Berlin Institute of Technology and Max-Planck-Society.
14  */
15 
16 #ifndef _VW_ADAPTIVE_H__
17 #define _VW_ADAPTIVE_H__
18 
21 
22 namespace shogun
23 {
32 {
33 public:
38 
45  CVwAdaptiveLearner(CVwRegressor* regressor, CVwEnvironment* vw_env);
46 
50  virtual ~CVwAdaptiveLearner();
51 
58  virtual void train(VwExample* &ex, float32_t update);
59 
65  virtual const char* get_name() const { return "VwAdaptiveLearner"; }
66 
67 private:
80  void quad_update(float32_t* weights, VwFeature& page_feature,
81  v_array<VwFeature> &offer_features, vw_size_t mask,
82  float32_t update, float32_t g, VwExample* ex, vw_size_t& ctr);
83 };
84 }
85 
86 #endif // _VW_ADAPTIVE_H__
uint32_t vw_size_t
vw_size_t typedef to work across platforms
Definition: vw_constants.h:26
virtual const char * get_name() const
Class CVwEnvironment is the environment used by VW.
Definition: VwEnvironment.h:41
void(* update)(float *foo, float bar)
Definition: JLCoverTree.h:529
Class v_array taken directly from JL's implementation.
VwAdaptiveLearner uses an adaptive subgradient technique to update weights.
Base class for all VW learners.
Definition: VwLearner.h:35
Regressor used by VW.
Definition: VwRegressor.h:37
Example class for VW.
Definition: vw_example.h:58
virtual void train(VwExample *&ex, float32_t update)
float float32_t
Definition: common.h:49
One feature in VW.
Definition: vw_example.h:34
all of classes and functions are contained in the shogun namespace
Definition: class_list.h:18

SHOGUN Machine Learning Toolbox - Documentation