From b6ead2f8e5752d1fd147fbca34120775440ccb3e Mon Sep 17 00:00:00 2001
From: Anton Romanov <a.romanov@ulstu.ru>
Date: Sat, 22 Apr 2023 12:09:55 +0400
Subject: [PATCH] #10 -- add max smoothed time series

---
 .../controller/TimeSeriesController.java      |  6 ++++
 .../ulstu/service/MethodParamBruteForce.java  | 31 +++++++++++++++++++
 .../ru/ulstu/service/TimeSeriesService.java   |  6 +++-
 3 files changed, 42 insertions(+), 1 deletion(-)

diff --git a/src/main/java/ru/ulstu/controller/TimeSeriesController.java b/src/main/java/ru/ulstu/controller/TimeSeriesController.java
index 1248005..b97a2cb 100644
--- a/src/main/java/ru/ulstu/controller/TimeSeriesController.java
+++ b/src/main/java/ru/ulstu/controller/TimeSeriesController.java
@@ -91,4 +91,10 @@ public class TimeSeriesController {
     public ResponseEntity<List<TimeSeries>> getGroupedTendencies(@RequestBody List<TimeSeries> timeSeriesList) {
         return new ResponseEntity<>(timeSeriesService.getGroupedTendencies(timeSeriesList), HttpStatus.OK);
     }
+
+    @PostMapping("getMaxSmoothing")
+    @Operation(description = "Получить максимальное сглаживание временного ряда")
+    public ResponseEntity<ModelingResult> getMaxSmoothing(@RequestBody TimeSeries timeSeries) throws ModelingException, ExecutionException, InterruptedException, InvocationTargetException, NoSuchMethodException, InstantiationException, IllegalAccessException {
+        return new ResponseEntity<>(timeSeriesService.getMaxSmoothedTimeSeries(timeSeries), HttpStatus.OK);
+    }
 }
diff --git a/src/main/java/ru/ulstu/service/MethodParamBruteForce.java b/src/main/java/ru/ulstu/service/MethodParamBruteForce.java
index c8e76a9..57a31b5 100644
--- a/src/main/java/ru/ulstu/service/MethodParamBruteForce.java
+++ b/src/main/java/ru/ulstu/service/MethodParamBruteForce.java
@@ -9,6 +9,7 @@ import ru.ulstu.datamodel.ts.TimeSeriesValue;
 import ru.ulstu.method.Method;
 import ru.ulstu.method.MethodParamValue;
 import ru.ulstu.method.MethodParameter;
+import ru.ulstu.method.ftransform.FTransform;
 import ru.ulstu.score.ScoreMethod;
 import ru.ulstu.score.Smape;
 
@@ -163,6 +164,36 @@ class MethodParamBruteForce {
                 .orElse(null);
     }
 
+    public ModelingResult getMaxSmoothedTimeSeries(TimeSeries timeSeries) throws ExecutionException, InterruptedException, NoSuchMethodException, InvocationTargetException, InstantiationException, IllegalAccessException {
+        List<Future<ModelingResult>> results = new ArrayList<>();
+        List<ModelingResult> results2 = new CopyOnWriteArrayList<>();
+
+        Map<LocalDateTime, Double> tsValues = timeSeries.getValues().stream()
+                .collect(Collectors.toMap(TimeSeriesValue::getDate, TimeSeriesValue::getValue,
+                        (oldValue, newValue) -> oldValue, LinkedHashMap::new));
+        Method method = new FTransform();
+        List<List<MethodParamValue>> availableParameterValues = getAvailableParametersValues(timeSeries, method.getAvailableParameters());
+        List<MethodParamValue> parametersValue = availableParameterValues.get(availableParameterValues.size() - 1);
+        Method methodInstance = method.getClass().getDeclaredConstructor().newInstance();
+        if (methodInstance.canMakeModel(timeSeries, parametersValue)) {
+            results.add(executors.submit(() -> {
+                Model model = methodInstance.getModel(timeSeries, parametersValue);
+                return new ModelingResult(model.getTimeSeriesModel(),
+                        null,
+                        parametersValue,
+                        scoreMethod.getScore(tsValues, model.getTimeSeriesModel()),
+                        methodInstance);
+            }));
+
+        }
+        for (Future<ModelingResult> futureModelingResult : results) {
+            results2.add(futureModelingResult.get());
+        }
+        return results2.stream()
+                .min(Comparator.comparing(modelingResult -> modelingResult.getScore().getDoubleValue()))
+                .orElse(null);
+    }
+
     public ModelingResult getSmoothedTimeSeries(TimeSeries timeSeries, String methodClassName) throws ExecutionException, InterruptedException, NoSuchMethodException, InvocationTargetException, InstantiationException, IllegalAccessException, ModelingException {
         Method method = methods.stream()
                 .filter(m -> m.getClass().getSimpleName().equals(methodClassName))
diff --git a/src/main/java/ru/ulstu/service/TimeSeriesService.java b/src/main/java/ru/ulstu/service/TimeSeriesService.java
index d7b4920..dcc1c5b 100644
--- a/src/main/java/ru/ulstu/service/TimeSeriesService.java
+++ b/src/main/java/ru/ulstu/service/TimeSeriesService.java
@@ -40,6 +40,10 @@ public class TimeSeriesService {
         return methodParamBruteForce.getSmoothedTimeSeries(timeSeries, methodClassName);
     }
 
+    public ModelingResult getMaxSmoothedTimeSeries(TimeSeries timeSeries) throws ExecutionException, InterruptedException, InvocationTargetException, NoSuchMethodException, InstantiationException, IllegalAccessException, ModelingException {
+        return methodParamBruteForce.getMaxSmoothedTimeSeries(timeSeries);
+    }
+
     public List<Method> getAvailableMethods() {
         return methodParamBruteForce.getAvailableMethods();
     }
@@ -54,7 +58,7 @@ public class TimeSeriesService {
 
     public TimeSeries getGroupedTendencies(TimeSeries timeSeries) {
         try {
-            timeSeries = smoothTimeSeries(timeSeries, "FTransform").getTimeSeries();
+            timeSeries = getMaxSmoothedTimeSeries(timeSeries).getTimeSeries();
         } catch (Exception e) {
             e.printStackTrace();
         }
-- 
2.34.1