// Derives QFunctions for the given value function and simulates the
// greedy policy for the given number of trials and steps per trial.
// Returns final value of every trial.
public ArrayList simulate(int trials, int steps, long rand_seed) {
ArrayList values = new ArrayList();
_r = new Random(rand_seed);
for (int trial = 1; trial <= trials; trial++) {
System.out.println("\n -----------\n Trial " + trial + "\n -----------");
// Initialize state
_state = new ArrayList();
_nVars = _mdp._alVars.size();
for (int c = 0; c < (_nVars << 1); c++) {
_state.add("-");
}
Iterator i = _mdp._alVars.iterator();
_vars = new TreeSet();
while (i.hasNext()) {
String s = (String) i.next();
if (!s.endsWith("\'")) {
Integer gid = (Integer) _mdp._tmVar2ID.get(s);
_vars.add(gid);
// Note: assign level (level is gid-1 b/c gids in order)
_state.set(gid.intValue() - 1, _r.nextBoolean() ? TRUE : FALSE);
}
}
// System.out.println(_mdp._context.printNode(_mdp._valueDD) + "\n" + _state);
double reward = _mdp._context.evaluate(_mdp._rewardDD, _state);
System.out.print(" " + PrintState(_state) + " " + MDP._df.format(reward));
// Run steps
for (int step = 1; step <= steps; step++) {
// Get action
Action a;
if (_bUseBasis) {
a = getBasisAction();
} else {
a = getAction();
}
// Execute action
executeAction(a);
// Update reward
reward =
(_mdp._bdDiscount.doubleValue() * reward)
+ _mdp._context.evaluate(_mdp._rewardDD, _state);
System.out.println(", a=" + a._sName);
System.out.print(
" " + PrintState(_state) + " " + MDP._df.format(reward) + ": " + "Step " + step);
}
values.add(new Double(reward));
System.out.println();
}
return values;
}
public void testNaNValues() throws ClassNotFoundException, IOException {
testWriteAndRead(
new ComplexClass(
rand.nextInt(),
rand.nextLong(),
"hello",
rand.nextBoolean(),
Double.NaN,
rand.nextFloat()));
}
public void testWritingRandomValue() throws ClassNotFoundException, IOException {
testWriteAndRead(
new ComplexClass(
rand.nextInt(),
rand.nextLong(),
Integer.toString(rand.nextInt()),
rand.nextBoolean(),
rand.nextDouble(),
rand.nextFloat()));
}
static void testCopyInputStreamToFile(int size) throws IOException {
Path tmpdir = createTempDirectory("blah");
Path source = tmpdir.resolve("source");
Path target = tmpdir.resolve("target");
try {
boolean testReplaceExisting = rand.nextBoolean();
// create source file
byte[] b = new byte[size];
rand.nextBytes(b);
write(source, b);
// target file might already exist
if (testReplaceExisting && rand.nextBoolean()) {
write(target, new byte[rand.nextInt(512)]);
}
// copy from stream to file
InputStream in = new FileInputStream(source.toFile());
try {
long n;
if (testReplaceExisting) {
n = copy(in, target, StandardCopyOption.REPLACE_EXISTING);
} else {
n = copy(in, target);
}
assertTrue(in.read() == -1); // EOF
assertTrue(n == size);
assertTrue(size(target) == size);
} finally {
in.close();
}
// check file
byte[] read = readAllBytes(target);
assertTrue(Arrays.equals(read, b));
} finally {
deleteIfExists(source);
deleteIfExists(target);
delete(tmpdir);
}
}
private InputStream generateData() {
final String LINE_SEPARATOR = System.getProperty("line.separator");
StringWriter writer = new StringWriter();
int maxMale = numGuests / 2;
int maxFemale = numGuests / 2;
int maleCount = 0;
int femaleCount = 0;
// init hobbies
List hobbyList = new ArrayList();
for (int i = 1; i <= maxHobbies; i++) {
hobbyList.add("h" + i);
}
Random rnd = new Random();
for (int i = 1; i <= numGuests; i++) {
char sex = rnd.nextBoolean() ? 'm' : 'f';
if (sex == 'm' && maleCount == maxMale) {
sex = 'f';
}
if (sex == 'f' && femaleCount == maxFemale) {
sex = 'm';
}
if (sex == 'm') {
maleCount++;
}
if (sex == 'f') {
femaleCount++;
}
List guestHobbies = new ArrayList(hobbyList);
int numHobbies = minHobbies + rnd.nextInt(maxHobbies - minHobbies + 1);
for (int j = 0; j < numHobbies; j++) {
int hobbyIndex = rnd.nextInt(guestHobbies.size());
String hobby = (String) guestHobbies.get(hobbyIndex);
writer.write(
"(guest (name n" + i + ") (sex " + sex + ") (hobby " + hobby + "))" + LINE_SEPARATOR);
guestHobbies.remove(hobbyIndex);
}
}
writer.write("(last_seat (seat " + numSeats + "))" + LINE_SEPARATOR);
writer.write(LINE_SEPARATOR);
writer.write("(context (state start))" + LINE_SEPARATOR);
return new ByteArrayInputStream(writer.getBuffer().toString().getBytes());
}
Item() {
z = rand.nextBoolean();
b = (byte) rand.nextInt();
c = (char) rand.nextInt();
s = (short) rand.nextInt();
i = rand.nextInt();
f = rand.nextFloat();
j = rand.nextLong();
d = rand.nextDouble();
zary = new boolean[ARRAYLEN];
bary = new byte[ARRAYLEN];
cary = new char[ARRAYLEN];
sary = new short[ARRAYLEN];
iary = new int[ARRAYLEN];
fary = new float[ARRAYLEN];
jary = new long[ARRAYLEN];
dary = new double[ARRAYLEN];
oary = new Object[ARRAYLEN];
for (int i = 0; i < ARRAYLEN; i++) {
zary[i] = rand.nextBoolean();
bary[i] = (byte) rand.nextInt();
cary[i] = (char) rand.nextInt();
sary[i] = (short) rand.nextInt();
iary[i] = rand.nextInt();
fary[i] = rand.nextFloat();
jary[i] = rand.nextLong();
dary[i] = rand.nextDouble();
oary[i] = new Integer(rand.nextInt());
}
char[] strChars = new char[STRLEN];
for (int i = 0; i < STRLEN; i++) {
strChars[i] = (char) rand.nextInt();
}
str = new String(strChars);
}
public void testNullValues() throws ClassNotFoundException, IOException {
testWriteAndRead(
new ComplexClass(
rand.nextInt(), rand.nextLong(), null, rand.nextBoolean(), null, rand.nextFloat()));
}
public void nextLevel() {
boolean loaded = false;
final GameBoard boardView = (GameBoard) this.findViewById(R.id.gameBoard);
this.level++;
AssetManager am = getResources().getAssets();
try {
List<String> allTutoLevels =
new LinkedList<String>(Arrays.asList(am.list("levels/tutorial")));
// if(addMsg){
// allTutoLevels.addAll(Arrays.asList(am.list("msg")));
// }
Log.d(TAG, allTutoLevels.toString());
for (String name : allTutoLevels) {
if (name.startsWith(this.level + ".")) {
BufferedReader br =
new BufferedReader(new InputStreamReader(am.open("levels/tutorial/" + name)));
String line;
String levelJSON = "";
while ((line = br.readLine()) != null) {
levelJSON += line + "\n";
}
br.close();
game.initGame(
levelJSON, boardView.getMeasuredWidth() / 60, boardView.getMeasuredHeight() / 60);
loaded = true;
}
}
} catch (IOException e) {
e.printStackTrace();
}
if (!loaded) {
Random r = new Random();
List<String> allLevels = new ArrayList<>();
try {
allLevels = Arrays.asList(am.list("levels"));
} catch (IOException e) {
}
if (r.nextBoolean() && !allLevels.isEmpty() && allLevels.size() != allDoneLevels.size()) {
try {
int nLevel;
do {
nLevel = r.nextInt(allLevels.size());
} while (allDoneLevels.contains(allLevels.get(nLevel)));
String name = allLevels.get(nLevel);
BufferedReader br = new BufferedReader(new InputStreamReader(am.open("levels/" + name)));
String line;
String levelJSON = "";
while ((line = br.readLine()) != null) {
levelJSON += line + "\n";
}
br.close();
allDoneLevels.add(name);
game.initGame(
levelJSON, boardView.getMeasuredWidth() / 60, boardView.getMeasuredHeight() / 60);
} catch (IOException e) {
this.game.initGame(
level, boardView.getMeasuredWidth() / 60, boardView.getMeasuredHeight() / 60);
}
} else {
this.game.initGame(
level, boardView.getMeasuredWidth() / 60, boardView.getMeasuredHeight() / 60);
}
}
// am.close();
boardView.setGame(this.game);
boardView.invalidate();
boardView.getHowdyShadeView().invalidate();
Toast.makeText(this, this.level + "", Toast.LENGTH_SHORT).show();
Log.i(
TAG,
"Max tiles : "
+ (boardView.getMeasuredWidth() / 60) * (boardView.getMeasuredHeight() / 60));
}
static boolean heads() {
return rand.nextBoolean();
}
public static Vector<Double> trainNode(
String filename,
int outputRepresentation,
String inputRepresentation,
int filter,
double learningRate,
int epochs) {
Vector<Double> node = null; // initialize node to null
double error = 1; // initialize error
double output = 0; // initialize output
Vector<Double> trainError = new Vector<Double>();
double meansq = 0;
String binTarget = "";
String binaryRep = "";
int target;
openFile(filename); // open our file for training
firstRead = true;
int targetCounter = 0;
while ((target = readFileIntoInputVector(inputRepresentation))
!= -2) { // while we have not reached out end of file error
if (outputRepresentation == 4) {
binTarget = Integer.toBinaryString(target); // convert target to binary
int[] targetArray = new int[4]; // array to hold binary ints
for (int h = 0; h < targetArray.length; h++) { // add binary elements to int array
try {
targetArray[targetArray.length - h - 1] =
Character.digit(binTarget.charAt(binTarget.length() - h - 1), 10);
} catch (IndexOutOfBoundsException e) { // if there is empty spaces, fill with zeros
targetArray[targetArray.length - h - 1] = 0;
}
}
target = targetArray[filter];
binTarget = "";
for (int i = 0; i < targetArray.length; i++) {
binTarget = binTarget + targetArray[i];
}
}
if ((filter == target && outputRepresentation == 10) || outputRepresentation != 10) {
if (node == null) {
node = new Vector<Double>();
for (int i = 0; i < inputs.size(); i++) { // for each input
double randWeight = 1; // initialize random weight
while (randWeight > 0.15) // while out random isn't less than 0.15
randWeight = random.nextDouble(); // get a new random double
if (random.nextBoolean()) randWeight = randWeight * -1; // randomly set to negative
node.addElement(new Double(randWeight)); // store random weight
}
}
targetCounter++;
// train for number of epochs
for (int i = 0; i < epochs; i++) { // for each epoch
double weightedSum = 0; // set/reset the weighted sum to 0
for (int j = 0; j < inputs.size(); j++) {
weightedSum += (inputs.elementAt(j) * node.elementAt(j)); // calculate weighted sum
}
output = activation(weightedSum); // retrieve output
if (outputRepresentation == 1 || outputRepresentation == 10) output = output * 10;
else if (outputRepresentation == 4) { // each node must have a whole number
if (output > 0.5) output = 1;
else output = 0;
}
error = target - output; // calculate error
if (i == epochs - 1) {
if (outputRepresentation == 4) {
if (filter == 0) {
allOutputs.ensureCapacity(targetCounter);
allOutputs.add(Integer.toString((int) output));
} else {
allOutputs.set(
targetCounter - 1, allOutputs.get(targetCounter - 1) + ((int) output));
}
}
trainError.add(error);
if (Math.round(error) == 0 && outputRepresentation != 4) {
trainCountCorrect++;
} else if (outputRepresentation == 4 && filter == 3) {
if (allOutputs.get(targetCounter - 1).equals(binTarget)) {
trainCountCorrect++;
}
}
}
for (int k = 0; k < inputs.size(); k++) { // for each input
double derivative =
(1.64872 * Math.exp(weightedSum))
/ (Math.pow(1.64872 + Math.exp(weightedSum), 2)); // calculate new weights
double newWeight =
node.elementAt(k)
+ (learningRate * inputs.elementAt(k) * error * derivative); // cont.
node.setElementAt(newWeight, k); // update weights
}
}
}
inputs.clear();
}
errorVect.addElement((Vector<Double>) trainError.clone());
trainError.clear();
if (outputRepresentation == 4 && filter == 3)
System.out.println(
"Training Percent: " + (100 * (double) trainCountCorrect / (double) targetCounter));
if (outputRepresentation == 10 && filter == 9)
System.out.println(
"Training Percent: " + (10 * (double) trainCountCorrect / (double) targetCounter));
if (outputRepresentation == 1)
System.out.println(
"Training Percent: " + (100 * (double) trainCountCorrect / (double) targetCounter));
closeFile();
return node; // node is now trained for an epoch
}