/**
* metodo che stampa la classifica su pdf
*
* @param ranks lista di coppie (squadra, punteggio)
* @param isConcluse flag vero se la classifica � definitiva
* @param doc documento pdf su cui stampare
* @throws DocumentException sollevata quando si verificano errori di stampa su pdf
*/
private void printRanking(List<Pair<TeamEntity, Integer>> ranks, Boolean isConcluse, Document doc)
throws DocumentException {
// tabella pdf, 3 colonne
PdfPTable table = new PdfPTable(3);
// cella
PdfPCell cell;
// aggiungi le celle di intestazione
table.setHeaderRows(1);
table.getDefaultCell().setHorizontalAlignment(Element.ALIGN_CENTER);
table.getDefaultCell().setVerticalAlignment(Element.ALIGN_MIDDLE);
table.setWidthPercentage(100);
table.setWidths(new float[] {0.2f, 1, 0.2f});
table.addCell("Posizione");
table.addCell("Squadra");
table.addCell("Punteggio");
Integer position = 0;
Integer oldPoints = Integer.MAX_VALUE;
Integer newPoints;
for (Iterator<Pair<TeamEntity, Integer>> it = ranks.iterator(); it.hasNext(); ) {
Pair<TeamEntity, Integer> coppia = it.next();
newPoints = coppia.getSecond();
// se non � un parimerito avanza di posizione
if (newPoints < oldPoints) {
oldPoints = newPoints;
position++;
}
// stampa la posizione
table.addCell(position.toString());
// stampa il nome della squadra
cell = new PdfPCell(new Phrase(coppia.getFirst().getName()));
cell.setHorizontalAlignment(Element.ALIGN_LEFT);
table.addCell(cell);
// stampa il punteggio
table.addCell(newPoints.toString());
}
// aggiungi il titolo al pdf
doc.add(
new Phrase(
new Chunk(
"\nClassifica " + (isConcluse ? "definitiva" : "provvisoria"),
FontFactory.getFont(FontFactory.HELVETICA, 16, Font.BOLD))));
// aggiungi la tabella al pdf
doc.add(table);
}
public ImageRecord[] calculateOutputs(ImageRecord[] inputs) throws ScaleNotMatchException {
this.inputs = inputs;
for (int i = 0; i < outMapSize; i++) {
Double[][] z =
new Double[outputSize.GetLeftElement()][outputSize.GetRightElement()]; // 初始化输出图像
for (int j = 0; j < inputs.length; j++) {
ImageRecord input = inputs[j];
z =
MathUtils.addArrays(
z, MathUtils.conv(input.getImage(), kernels[j][i].getKernel(), "valid")); // 图像卷积
}
z = MathUtils.AddConstantToArray(z, b[i]);
z = MathUtils.SigmoidForImage(z);
outputs[i] = new ImageRecord(z, -999);
}
return outputs;
}
public ImageRecord[] update(ImageRecord[] deltas, Integer batchSize, Double learningRate)
throws ScaleNotMatchException {
int imageSize = deltas.length;
ImageRecord[] deltaResult = new ImageRecord[this.inMapSize];
for (int i = 0; i < imageSize; i++)
deltas[i] =
new ImageRecord(
MathUtils.MatrixElementMultiply(
deltas[i].getImage(),
MathUtils.MatrixElementMultiply(
outputs[i].getImage(),
MathUtils.ContantMinusArray(outputs[i].getImage(), 1.0))),
-999);
this.d = deltas; // 保存卷积层的灵敏度
for (int i = 0; i < inMapSize; i++) {
Double[][] image = new Double[inputSize.GetLeftElement()][inputSize.GetRightElement()];
for (int j = 0; j < inputSize.GetLeftElement(); j++)
for (int k = 0; k < inputSize.GetRightElement(); k++) image[j][k] = 0.0;
for (int j = 0; j < imageSize; j++) {
image =
MathUtils.addArrays(
image,
MathUtils.conv(deltas[j].getImage(), kernels[i][j].getRotatedKernel(), "full"));
}
deltaResult[i] = new ImageRecord(image, -999);
}
calculateGradient();
this.batchCount += 1;
// 按batchsize更新权重
if (this.batchCount == batchSize - 1) {
updateWeight(learningRate);
this.batchCount = 0;
}
return deltaResult;
}
public ConvLayer(
Pair<Integer, Integer> inputSize,
Integer inMapSize,
Integer outMapSize,
Integer kernelSize,
String activationFunction) {
super();
type = "Convolutional Layer";
this.activationFunction = activationFunction;
this.inputSize = new Pair<Integer, Integer>(inputSize);
this.outputSize =
new Pair<Integer, Integer>(
inputSize.GetLeftElement() - kernelSize + 1,
inputSize.GetRightElement() - kernelSize + 1);
this.inMapSize = inMapSize;
this.kernelSize = kernelSize;
this.outMapSize = outMapSize;
this.fan_in = inMapSize * (kernelSize * kernelSize); // 该卷积层的一个map对应的卷积核权重数
this.fan_out = outMapSize * (kernelSize * kernelSize); // 该卷积层的卷积核权重数
this.outputs = new ImageRecord[outMapSize];
init_Kernels();
init_b();
}
private static void startSession() {
Session session = Session.getInstance(true);
Pair<BigInteger, BigInteger> privateKeys = session.getPrivateKey();
System.out.println("");
System.out.println("Private key x: " + privateKeys.getFirst());
System.out.println("Private key y: " + privateKeys.getSecond());
System.out.println("");
System.out.println("Please introduce message to sign:");
String text = null;
while (text == null) {
try {
text = (new BufferedReader(new InputStreamReader(System.in))).readLine();
} catch (IOException e) {
e.printStackTrace();
}
}
Pair<BigInteger, BigInteger> signature =
DSA.sign(
true,
text,
session.getGlobalKeyG(),
session.getGlobalKeyP(),
session.getGlobalKeyQ(),
privateKeys.getFirst());
System.out.println(
"Signature (r,s): (" + signature.getFirst() + ", " + signature.getSecond() + ")");
System.out.println("");
System.out.println("Do you want to verify a message?");
System.out.println(" 1.Yes (y)");
System.out.println(" 2.No (press enter)");
String alg = null;
try {
alg = (new BufferedReader(new InputStreamReader(System.in))).readLine();
} catch (IOException e) {
e.printStackTrace();
}
switch (alg) {
case "y":
verifyMessage();
break;
default:
System.out.println("Bye!");
System.exit(1);
break;
}
}
