#96 -- Fix time series generation

src/main/java/ru/ulstu/extractor/generation/model/GenerationForm.java

@@ -2,11 +2,12 @@ package ru.ulstu.extractor.generation.model;
 
 public class GenerationForm {
     private int tsLength;
-    private int min;
-    private int max;
-    private int base;
-    private int baseTendency;
-    private int tendencyDynamic;
+    private double min;
+    private double max;
+    private double base;
+    private double baseTendency;
+    private double tendencyDynamic;
+    private double randomWeight;
 
     public int getTsLength() {
         return tsLength;
@@ -16,43 +17,51 @@ public class GenerationForm {
         this.tsLength = tsLength;
     }
 
-    public int getMin() {
+    public double getMin() {
         return min;
     }
 
-    public void setMin(int min) {
+    public void setMin(double min) {
         this.min = min;
     }
 
-    public int getMax() {
+    public double getMax() {
         return max;
     }
 
-    public void setMax(int max) {
+    public void setMax(double max) {
         this.max = max;
     }
 
-    public int getBase() {
+    public double getBase() {
         return base;
     }
 
-    public void setBase(int base) {
+    public void setBase(double base) {
         this.base = base;
     }
 
-    public int getBaseTendency() {
+    public double getBaseTendency() {
         return baseTendency;
     }
 
-    public void setBaseTendency(int baseTendency) {
+    public void setBaseTendency(double baseTendency) {
         this.baseTendency = baseTendency;
     }
 
-    public int getTendencyDynamic() {
+    public double getTendencyDynamic() {
         return tendencyDynamic;
     }
 
-    public void setTendencyDynamic(int tendencyDynamic) {
+    public void setTendencyDynamic(double tendencyDynamic) {
         this.tendencyDynamic = tendencyDynamic;
     }
+
+    public double getRandomWeight() {
+        return randomWeight;
+    }
+
+    public void setRandomWeight(double randomWeight) {
+        this.randomWeight = randomWeight;
+    }
 }

src/main/java/ru/ulstu/extractor/generation/service/GenerationService.java

@@ -18,7 +18,6 @@ import java.util.List;
 public class GenerationService {
     private final TimeSeriesService timeSeriesService;
     private final BranchService branchService;
-    private final static double RANDOM_WEIGHT = 0.1;
 
     public GenerationService(TimeSeriesService timeSeriesService,
                              BranchService branchService) {
@@ -44,18 +43,20 @@ public class GenerationService {
         double newValue;
         int maxTryCount = 10;
         do {
+            double oneStepDiff = generationForm.getRandomWeight() * (Math.random() - 0.5) * (generationForm.getMax() - generationForm.getMin()) / (generationForm.getTsLength() + 10);
             if (timeSeriesValues.isEmpty()) {
                 if (generationForm.getBaseTendency() > 0) {
-                    newValue = 0.1 * Math.random() * (generationForm.getMax() - generationForm.getMin());
+                    newValue = 0.1 * (generationForm.getRandomWeight() > 0.0 ? oneStepDiff : 1.0) * (generationForm.getMax() - generationForm.getMin());
+                } else if (generationForm.getBaseTendency() < 0) {
+                    newValue = generationForm.getMax() - 0.1 * (generationForm.getRandomWeight() > 0.0 ? oneStepDiff : 1.0) * (generationForm.getMax() - generationForm.getMin());
                 } else {
-                    newValue = generationForm.getMax() - 0.1 * Math.random() * (generationForm.getMax() - generationForm.getMin());
+                    newValue = generationForm.getBase();
                 }
             } else {
                 newValue = timeSeriesValues.get(timeSeriesValues.size() - 1).getValue()
-                        + Math.random() * generationForm.getBaseTendency()
-                        * ((generationForm.getMax() - generationForm.getMin()) / generationForm.getTsLength())
-                        * generationForm.getTendencyDynamic()
-                        + RANDOM_WEIGHT * (Math.random() - 0.5) * (generationForm.getMax() - generationForm.getMin());
+                        + (generationForm.getRandomWeight() > 0.0 ? oneStepDiff : 1.0) * generationForm.getBaseTendency()
+                        * ((generationForm.getMax() - generationForm.getMin()) / (generationForm.getTsLength() + 10))
+                        * generationForm.getTendencyDynamic();
             }
             maxTryCount--;
         } while (((newValue <= generationForm.getMin())

src/main/resources/templates/generation.html

@@ -56,6 +56,14 @@
                 <input type="text" class="form-control  m-1" th:field="*{tendencyDynamic}">
             </div>
         </div>
+        <div class="row">
+            <div class="col-md-4 col-sm-12">
+                Величина шума
+            </div>
+            <div class="col-md-6 col-sm-12">
+                <input type="text" class="form-control  m-1" th:field="*{randomWeight}">
+            </div>
+        </div>
         <div class="row">
             <div class="col-md-4 col-sm-12">
                 <input type="submit" class="btn btn-outline-success form-control" value="Сгенерировать временные ряды"/>