Alexander Savochkin AlexanderSavochkin
AlexanderSavochkin
/ mlt_gradient_for_sample.cpp
Created
December 3, 2015 07:26
Piece of code for calculation of likehood gradient in multinomial logistic regression for one training sample
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| void MultinomialLogRelModel::gradientForSample(const valarray<double>& sample_features, int label, valarray<double>& gradient) const | |
| { | |
| double sum_exp = 0.0; | |
| valarray<double> features(0.0, (num_sample_features + 1) * num_classes); | |
| valarray<double> gradient_add(0.0, (num_sample_features + 1) * num_classes); | |
| for (int k = 0; k < num_classes; ++k) | |
| { | |
| featurize(sample_features, k, features); | |
| double wf = inner_product(begin(model_weights), end(model_weights), begin(features), 0.0); |
AlexanderSavochkin
/ essentials-mlr.h
Last active
November 30, 2015 05:04
Multinomial logistic regression model header file
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| class MultinomialLogRelModel | |
| { | |
| //Основные параметры модели | |
| int num_classes; //Количество классов | |
| int num_sample_features; //Количество признаков в объектах | |
| valarray<double> model_weights; //Веса модели | |
| double regularization_coeff; //Коэффициент регуляризации | |
| double learning_rate; //Параметр шага в методе градиентного спуска | |
| public: | |
| ... |
AlexanderSavochkin
/ formula-parser-rules.jj
Last active
November 23, 2015 07:14
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| //Правило ELEMENT -> elementToken | |
| //Находит символ химического элемента, возвращает | |
| //соответствующий объект класса Element | |
| ChemSubStructure Element(): {Token t;} { | |
| t = <ELEMENT> { return new Element( t.image ); } | |
| } | |
| //Правило ELEMENTARYGROUP -> elementaryGroupToken | |
| //Находит "стандартную" группу атомов (SO4, CO3, OH), | |
| //возвращает соответствующий объект класса ElementaryGroup |
AlexanderSavochkin
/ formula-scanner.jj
Created
November 19, 2015 06:28
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| TOKEN: { "(" | ")" | | |
| <NUM: (["0"-"9"])+> | | |
| <ELEMENT: ( "H" | "He" | "Li" | "Be" | "B" | "C" | "N" | "O" | "F" | "Ne" | | |
| "Na" | "Mg" | "Al" | "Si" | "P" | "S" | "Cl" | "Ar" | | |
| "K" | "Ca" | "Sc" | "Ti" | "V" | "Cr" | "Mn" | "Fe" | "Co" | "Ni" | "Cu" | "Zn" | "Ga" | "Ge" | "As" | "Se" | "Br" | "Kr" | | |
| "Rb" | "Sr" | "Y" | "Zr" | "Nb" | "Mo" | "Tc" | "Ru" | "Rh" | "Pd" | "Ag" | "Cd" | "In" | "Sn" | "Sb" | "Te" | "I" | "Xe" | | |
| "Cs" | "Ba" | "Hf" | "Ta" | "W" | "Re" | "Os" | "Ir" | "Pt" | "Au" | "Hg" | "Tl" | "Pb" | "Bi" | "Po" | "At" | "Rn" | |
| "La" | "Ce" | "Pr" | "Nd" | "Pm" | "Sm" | "Eu" | "Gd" | "Tb" | "Dy" | "Ho" | "Er" | "Tm" | "Yb" | "Lu" | | |
| "Ac" | "Th" | "Pa" | "U" | "Np" | "Pu" | "Am" | "Cm" | "Bk" | "Cf" | "Es" | "Fm" | "Md" | "No" | "Lr")> | | |
| <ELEMENTARYGROUP: ("OH" | |
AlexanderSavochkin
/ javacc-fragment-pom.xml
Created
October 29, 2015 07:12
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| <build> | |
| <plugins> | |
| <plugin> | |
| <groupId>org.codehaus.mojo</groupId> | |
| <artifactId>javacc-maven-plugin</artifactId> | |
| <version>2.6</version> | |
| <dependencies> | |
| <dependency> | |
| <groupId>net.java.dev.javacc</groupId> | |
| <artifactId>javacc</artifactId> |
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| void PrintSymbol(short code, ColorRGB *colorRGB) | |
| { | |
| for (unsigned short y = 0; y < 8; ++y) { | |
| for (unsigned short x = 0; x < 8; ++x) | |
| { | |
| if (font8x8_basic[code][y] & (1 << x)) | |
| Colorduino.SetPixel(7-x, y, colorRGB->r, colorRGB->g, colorRGB->b); | |
| else | |
| Colorduino.SetPixel(7-x, y, 0, 0, 0); | |
| } |
AlexanderSavochkin
/ DigitsFont.ino
Created
July 21, 2015 06:00
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| //Font | |
| char font8x8_basic[10][8] = { | |
| { 0x3E, 0x63, 0x73, 0x7B, 0x6F, 0x67, 0x3E, 0x00}, // U+0030 (0) | |
| { 0x0C, 0x0E, 0x0C, 0x0C, 0x0C, 0x0C, 0x3F, 0x00}, // U+0031 (1) | |
| { 0x1E, 0x33, 0x30, 0x1C, 0x06, 0x33, 0x3F, 0x00}, // U+0032 (2) | |
| { 0x1E, 0x33, 0x30, 0x1C, 0x30, 0x33, 0x1E, 0x00}, // U+0033 (3) | |
| { 0x38, 0x3C, 0x36, 0x33, 0x7F, 0x30, 0x78, 0x00}, // U+0034 (4) | |
| { 0x3F, 0x03, 0x1F, 0x30, 0x30, 0x33, 0x1E, 0x00}, // U+0035 (5) | |
| { 0x1C, 0x06, 0x03, 0x1F, 0x33, 0x33, 0x1E, 0x00}, // U+0036 (6) | |
| { 0x3F, 0x33, 0x30, 0x18, 0x0C, 0x0C, 0x0C, 0x00}, // U+0037 (7) |
AlexanderSavochkin
/ ColorShieldApi.ino
Created
July 21, 2015 05:49
Arduino ColorShield API description
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| //В заголовочном файле Colorduino.h определяется структура pixelRGB, | |
| typedef struct pixelRGB { | |
| unsigned char r; | |
| unsigned char g; | |
| unsigned char b; | |
| } PixelRGB; | |
| //...а так же класс ColorduinoObject, | |
| class ColorduinoObject { | |
| ... |
AlexanderSavochkin
/ SimpleThermometer.ino
Last active
May 28, 2024 18:06
Simple arduino 2-sensors (DS18B20) termometer + I2C LCD sketch
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| //I2C bus support | |
| #include <Wire.h> | |
| //I2C | |
| #include <LiquidCrystal_I2C.h> | |
| //OneWire bus suport | |
| #include <OneWire.h> | |
| //DS18B20 temperature sensor support | |
| #include <DallasTemperature.h> | |
| //DS18B20 sensor pin | |
| #define ONE_WIRE_BUS 8 |
AlexanderSavochkin
/ hardware_serial_ino.ino
Created
July 23, 2014 23:04
Arduino hardware serial interconnection example
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| enum { LED_PIN = 13 }; | |
| void setup() | |
| { | |
| pinMode(LED_PIN, OUTPUT); | |
| Serial.begin(9600); | |
| } | |
| void loop() | |
| { |