PLearn 0.1
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00001 // -*- C++ -*- 00002 00003 // PLearn (A C++ Machine Learning Library) 00004 // Copyright (C) 1998 Pascal Vincent 00005 // Copyright (C) 1999,2000 Pascal Vincent, Yoshua Bengio and University of Montreal 00006 // 00007 00008 // Redistribution and use in source and binary forms, with or without 00009 // modification, are permitted provided that the following conditions are met: 00010 // 00011 // 1. Redistributions of source code must retain the above copyright 00012 // notice, this list of conditions and the following disclaimer. 00013 // 00014 // 2. Redistributions in binary form must reproduce the above copyright 00015 // notice, this list of conditions and the following disclaimer in the 00016 // documentation and/or other materials provided with the distribution. 00017 // 00018 // 3. The name of the authors may not be used to endorse or promote 00019 // products derived from this software without specific prior written 00020 // permission. 00021 // 00022 // THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR 00023 // IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 00024 // OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN 00025 // NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 00026 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED 00027 // TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 00028 // PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 00029 // LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 00030 // NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 00031 // SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 00032 // 00033 // This file is part of the PLearn library. For more information on the PLearn 00034 // library, go to the PLearn Web site at www.plearn.org 00035 00036 00037 00038 /* ******************************************************* 00039 * $Id: NistDB.h 8231 2007-11-07 20:50:01Z nouiz $ 00040 * AUTHORS: Pascal Vincent 00041 * This file is part of the PLearn library. 00042 ******************************************************* */ 00043 00044 00047 #ifndef NistDB_INC 00048 #define NistDB_INC 00049 00050 #include <plearn/vmat/VMat.h> 00051 00052 namespace PLearn { 00053 using namespace std; 00054 00055 00056 class NistDB: public VMatrix 00057 { 00058 protected: 00059 // TODO: use PStream? 00060 mutable ifstream imagef; 00061 mutable ifstream labelf; 00062 mutable unsigned char buf[28*28]; 00063 00064 public: 00065 00066 NistDB(bool train); 00067 00068 virtual real get(int i, int j) const; 00069 virtual void getSubRow(int i, int j, Vec v) const; 00070 }; 00071 00072 inline void loadMNIST(VMat& training_set, VMat& test_set) 00073 { 00074 training_set = new NistDB(true); 00075 test_set = new NistDB(false); 00076 } 00077 00078 } // end of namespace PLearn 00079 00080 00081 #endif 00082 00083 00084 /* 00085 Local Variables: 00086 mode:c++ 00087 c-basic-offset:4 00088 c-file-style:"stroustrup" 00089 c-file-offsets:((innamespace . 0)(inline-open . 0)) 00090 indent-tabs-mode:nil 00091 fill-column:79 00092 End: 00093 */ 00094 // vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=79 :