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Implementation of code from p001 and p002 in MySQL #173

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Implementation of code from p001 and p002 in MySQL #173

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af7ef14
Implementation of code from p001 in MySQL
piotrw Dec 5, 2021
afef295
Change database name to underscore_case
piotrw Dec 6, 2021
f86c196
Implementation of code from p002 in MySQL
piotrw Dec 6, 2021
aaff6b2
renaming columns
piotrw Dec 12, 2021
d52151e
renaming columns
piotrw Dec 12, 2021
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40 changes: 40 additions & 0 deletions MySQL/p001-Basic-Neuron-3-inputs.sql
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Original file line number Diff line number Diff line change
@@ -0,0 +1,40 @@
--
-- Creates a basic neuron with 3 inputs.
--
-- Associated YT NNFS tutorial: https://www.youtube.com/watch?v=Wo5dMEP_BbI
--

DROP DATABASE IF EXISTS `p001_basic_neuron_3_inputs`;
CREATE DATABASE `p001_basic_neuron_3_inputs`;

USE `p001_basic_neuron_3_inputs`;

CREATE TABLE `inputs`
(
`0` DOUBLE NOT NULL,
`1` DOUBLE NOT NULL,
`2` DOUBLE NOT NULL
);

CREATE TABLE `weights`
(
`0` DOUBLE NOT NULL,
`1` DOUBLE NOT NULL,
`2` DOUBLE NOT NULL
);

CREATE TABLE `bias`
(
`0` DOUBLE NOT NULL
);

INSERT INTO `inputs` (`0`, `1`, `2`) VALUES ( 1.2, 5.1, 2.1 );
INSERT INTO `weights` (`0`, `1`, `2`) VALUES ( 3.1, 2.1, 8.7 );
INSERT INTO `bias` (`0`) VALUES ( 3.0 );

SELECT (
( SELECT `inputs`.`0` FROM inputs ) * ( SELECT `weights`.`0` FROM weights ) +
( SELECT `inputs`.`1` FROM inputs ) * ( SELECT `weights`.`1` FROM weights ) +
( SELECT `inputs`.`2` FROM inputs ) * ( SELECT `weights`.`2` FROM weights ) +
( SELECT `bias`.`0` FROM bias )
) AS output;
52 changes: 52 additions & 0 deletions MySQL/p002-Basic-Neuron-Layer.sql
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Original file line number Diff line number Diff line change
@@ -0,0 +1,52 @@
--
-- Creates a simple layer of neurons, with 4 inputs.
--
-- Associated YT NNFS tutorial: https://www.youtube.com/watch?v=lGLto9Xd7bU
--

DROP DATABASE IF EXISTS `p002_basic_neuron_layer`;
CREATE DATABASE `p002_basic_neuron_layer`;

USE `p002_basic_neuron_layer`;

CREATE TABLE `inputs` ( `0` DOUBLE NOT NULL, `1` DOUBLE NOT NULL, `2` DOUBLE NOT NULL, `3` DOUBLE NOT NULL );

CREATE TABLE `weights1` ( `0` DOUBLE NOT NULL, `1` DOUBLE NOT NULL, `2` DOUBLE NOT NULL, `3` DOUBLE NOT NULL );
CREATE TABLE `weights2` ( `0` DOUBLE NOT NULL, `1` DOUBLE NOT NULL, `2` DOUBLE NOT NULL, `3` DOUBLE NOT NULL );
CREATE TABLE `weights3` ( `0` DOUBLE NOT NULL, `1` DOUBLE NOT NULL, `2` DOUBLE NOT NULL, `3` DOUBLE NOT NULL );

CREATE TABLE `bias1` ( `0` DOUBLE NOT NULL );
CREATE TABLE `bias2` ( `0` DOUBLE NOT NULL );
CREATE TABLE `bias3` ( `0` DOUBLE NOT NULL );

INSERT INTO `inputs` (`0`, `1`, `2`, `3`) VALUES ( 1, 2, 3, 2.5 );

INSERT INTO `weights1` (`0`, `1`, `2`, `3`) VALUES ( 0.2, 0.8, -0.5, 1 );
INSERT INTO `weights2` (`0`, `1`, `2`, `3`) VALUES ( 0.5, -0.91, 0.26, -0.5 );
INSERT INTO `weights3` (`0`, `1`, `2`, `3`) VALUES ( -0.26, -0.27, 0.17, 0.87 );

INSERT INTO `bias1` (`0`) VALUES (2);
INSERT INTO `bias2` (`0`) VALUES (3);
INSERT INTO `bias3` (`0`) VALUES (0.5);

SELECT (
( SELECT `inputs`.`0` FROM inputs ) * ( SELECT `weights1`.`0` FROM weights1 ) +
( SELECT `inputs`.`1` FROM inputs ) * ( SELECT `weights1`.`1` FROM weights1 ) +
( SELECT `inputs`.`2` FROM inputs ) * ( SELECT `weights1`.`2` FROM weights1 ) +
( SELECT `inputs`.`3` FROM inputs ) * ( SELECT `weights1`.`3` FROM weights1 ) +
( SELECT `bias1`.`0` FROM bias1 )
) AS `1`,
(
( SELECT `inputs`.`0` FROM inputs ) * ( SELECT `weights2`.`0` FROM weights2 ) +
( SELECT `inputs`.`1` FROM inputs ) * ( SELECT `weights2`.`1` FROM weights2 ) +
( SELECT `inputs`.`2` FROM inputs ) * ( SELECT `weights2`.`2` FROM weights2 ) +
( SELECT `inputs`.`3` FROM inputs ) * ( SELECT `weights2`.`3` FROM weights2 ) +
( SELECT `bias2`.`0` FROM bias2 )
) AS `2`,
(
( SELECT `inputs`.`0` FROM inputs ) * ( SELECT `weights3`.`0` FROM weights3 ) +
( SELECT `inputs`.`1` FROM inputs ) * ( SELECT `weights3`.`1` FROM weights3 ) +
( SELECT `inputs`.`2` FROM inputs ) * ( SELECT `weights3`.`2` FROM weights3 ) +
( SELECT `inputs`.`3` FROM inputs ) * ( SELECT `weights3`.`3` FROM weights3 ) +
( SELECT `bias3`.`0` FROM bias3 )
) AS `3`