feat: closes #40

logic/models/train/train.go

@@ -17,6 +17,9 @@ import (
 	. "git.andr3h3nriqu3s.com/andr3/fyp/logic/utils"
 )
 
+const EPOCH_PER_RUN = 20;
+const MAX_EPOCH = 100
+
 func MakeDefenition(db *sql.DB, model_id string, target_accuracy int) (id string, err error) {
 	id = ""
 	rows, err := db.Query("insert into model_definition (model_id, target_accuracy) values ($1, $2) returning id;", model_id, target_accuracy)
@@ -34,6 +37,7 @@ func MakeDefenition(db *sql.DB, model_id string, target_accuracy int) (id string
 type ModelDefinitionStatus int
 
 const (
+	MODEL_DEFINITION_STATUS_CANCELD_TRAINING                       = -4
 	MODEL_DEFINITION_STATUS_FAILED_TRAINING                        = -3
 	MODEL_DEFINITION_STATUS_PRE_INIT         ModelDefinitionStatus = 1
 	MODEL_DEFINITION_STATUS_INIT                                   = 2
@@ -104,7 +108,8 @@ func generateCvs(c *Context, run_path string, model_id string) (count int, err e
 	return
 }
 
-func trainDefinition(c *Context, model *BaseModel, definition_id string) (accuracy float64, err error) {
+func trainDefinition(c *Context, model *BaseModel, definition_id string, load_prev bool) (accuracy float64, err error) {
+	c.Logger.Warn("About to start training definition")
 	accuracy = 0
 	layers, err := c.Db.Query("select layer_type, shape from model_definition_layer where def_id=$1 order by layer_order asc;", definition_id)
 	if err != nil {
@@ -153,6 +158,9 @@ func trainDefinition(c *Context, model *BaseModel, definition_id string) (accura
 		return
 	}
 
+	// Copy result around
+	result_path := path.Join("savedData", model.Id, "defs", definition_id)
+
 	if err = tmpl.Execute(f, AnyMap{
 		"Layers":           got,
 		"Size":             got[0].Shape,
@@ -160,7 +168,10 @@ func trainDefinition(c *Context, model *BaseModel, definition_id string) (accura
 		"RunPath":          run_path,
 		"ColorMode":        model.ImageMode,
 		"Model":            model,
+		"EPOCH_PER_RUN":    EPOCH_PER_RUN,
 		"DefId":            definition_id,
+		"LoadPrev":         load_prev,
+		"LastModelRunPath": path.Join(getDir(), result_path, "model.keras"),
 	}); err != nil {
 		return
 	}
@@ -172,9 +183,6 @@ func trainDefinition(c *Context, model *BaseModel, definition_id string) (accura
 		return
 	}
 
-	// Copy result around
-	result_path := path.Join("savedData", model.Id, "defs", definition_id)
-
 	if err = os.MkdirAll(result_path, os.ModePerm); err != nil {
 		return
 	}
@@ -183,6 +191,10 @@ func trainDefinition(c *Context, model *BaseModel, definition_id string) (accura
 		return
 	}
 
+	if err = exec.Command("cp", "-r", path.Join(run_path, "model.keras"), path.Join(result_path, "model.keras")).Run(); err != nil {
+		return
+	}
+
 	accuracy_file, err := os.Open(path.Join(run_path, "accuracy.val"))
 	if err != nil {
 		return
@@ -194,7 +206,7 @@ func trainDefinition(c *Context, model *BaseModel, definition_id string) (accura
 		return
 	}
 
-	fmt.Println(string(accuracy_file_bytes))
+	c.Logger.Info("Model finished training!", "accuracy", accuracy)
 
 	accuracy, err = strconv.ParseFloat(string(accuracy_file_bytes), 64)
 	if err != nil {
@@ -205,8 +217,25 @@ func trainDefinition(c *Context, model *BaseModel, definition_id string) (accura
 	return
 }
 
+func remove[T interface{}](lst []T, i int) []T {
+	lng := len(lst)
+	if i >= lng {
+		return []T{}
+	}
+
+	if i+1 >= lng {
+		return lst[:lng-1]
+	}
+
+	if i == 0 {
+		return lst[1:]
+	}
+
+	return append(lst[:i], lst[i+1:]...)
+}
+
 func trainModel(c *Context, model *BaseModel) {
-	definitionsRows, err := c.Db.Query("select id, target_accuracy from model_definition where status=$1 and model_id=$2", MODEL_DEFINITION_STATUS_INIT, model.Id)
+	definitionsRows, err := c.Db.Query("select id, target_accuracy, epoch from model_definition where status=$1 and model_id=$2", MODEL_DEFINITION_STATUS_INIT, model.Id)
 	if err != nil {
 		c.Logger.Error("Failed to trainModel!Err:")
 		c.Logger.Error(err)
@@ -218,13 +247,14 @@ func trainModel(c *Context, model *BaseModel) {
 	type row struct {
 		id              string
 		target_accuracy int
+		epoch           int
 	}
 
 	definitions := []row{}
 
 	for definitionsRows.Next() {
 		var rowv row
-		if err = definitionsRows.Scan(&rowv.id, &rowv.target_accuracy); err != nil {
+		if err = definitionsRows.Scan(&rowv.id, &rowv.target_accuracy, &rowv.epoch); err != nil {
 			c.Logger.Error("Failed to train Model Could not read definition from db!Err:")
 			c.Logger.Error(err)
 			ModelUpdateStatus(c, model.Id, FAILED_TRAINING)
@@ -239,30 +269,58 @@ func trainModel(c *Context, model *BaseModel) {
 		return
 	}
 
-	for _, def := range definitions {
+	toTrain := len(definitions)
+	firstRound := true
+	var newDefinitions = []row{}
+	copy(newDefinitions, definitions)
+	for {
+		for i, def := range definitions {
 			ModelDefinitionUpdateStatus(c, def.id, MODEL_DEFINITION_STATUS_TRAINING)
-		accuracy, err := trainDefinition(c, model, def.id)
+			accuracy, err := trainDefinition(c, model, def.id, !firstRound)
 			if err != nil {
-			c.Logger.Error("Failed to train definition!Err:")
+				c.Logger.Error("Failed to train definition!Err:", "err", err)
-			c.Logger.Error(err)
 				ModelDefinitionUpdateStatus(c, def.id, MODEL_DEFINITION_STATUS_FAILED_TRAINING)
+				toTrain = toTrain - 1
+				newDefinitions = remove(newDefinitions, i)
 				continue
 			}
+			def.epoch += EPOCH_PER_RUN
 
 			int_accuracy := int(accuracy * 100)
 
-		if int_accuracy < def.target_accuracy {
+			if int_accuracy >= def.target_accuracy {
+				c.Logger.Info("Found a definition that reaches target_accuracy!")
+				_, err = c.Db.Exec("update model_definition set accuracy=$1, status=$2, epoch=$3 where id=$4", int_accuracy, MODEL_DEFINITION_STATUS_TRANIED, def.epoch, def.id)
+				if err != nil {
+					c.Logger.Error("Failed to train definition!Err:\n", "err", err)
+					ModelUpdateStatus(c, model.Id, FAILED_TRAINING)
+					return
+				}
+
+				_, err = c.Db.Exec("update model_definition set status=$1 where id!=$2 and model_id=$3 and status!=$4", MODEL_DEFINITION_STATUS_CANCELD_TRAINING, def.id, model.Id, MODEL_DEFINITION_STATUS_FAILED_TRAINING)
+				if err != nil {
+					c.Logger.Error("Failed to train definition!Err:\n", "err", err)
+					ModelUpdateStatus(c, model.Id, FAILED_TRAINING)
+					return
+				}
+
+				toTrain = 0
+				break
+			}
+
+			if def.epoch > MAX_EPOCH {
 				fmt.Printf("Failed to train definition! Accuracy less %d < %d\n", int_accuracy, def.target_accuracy)
 				ModelDefinitionUpdateStatus(c, def.id, MODEL_DEFINITION_STATUS_FAILED_TRAINING)
+				toTrain = toTrain - 1
+				newDefinitions = remove(newDefinitions, i)
 				continue
 			}
 
-		_, err = c.Db.Exec("update model_definition set accuracy=$1, status=$2 where id=$3", int_accuracy, MODEL_DEFINITION_STATUS_TRANIED, def.id)
+		}
-		if err != nil {
+		copy(definitions, newDefinitions)
-			fmt.Printf("Failed to train definition!Err:\n")
+		firstRound = false
-			fmt.Println(err)
+		if toTrain == 0 {
-			ModelUpdateStatus(c, model.Id, FAILED_TRAINING)
+			break
-			return
 		}
 	}
 

sql/models.sql

@@ -40,7 +40,6 @@ create table if not exists model_data_point (
     status_message text
 );
 
--- drop table if exists model_definition; 
 -- drop table if exists model_definition; 
 create table if not exists model_definition (
     id uuid primary key default gen_random_uuid(),

views/models/edit.html

@@ -434,19 +434,36 @@
             {{/* TODO improve this */}}
             Training the model...<br/>
             {{/* TODO Add progress status on definitions */}}
+            <table>
+                <thead>
+                    <tr>
+                        <th>
+                            Status
+                        </th>
+                        <th>
+                            EpochProgress
+                        </th>
+                        <th>
+                            Accuracy
+                        </th>
+                    </tr>
+                </thead>
+                <tbody>
                     {{ range .Defs}}
-                <div>
+                        <tr>
-                    <div>
+                            <td>
                                 {{.Status}}
-                    </div>
+                            </td>
-                    <div>
+                            <td>
                                 {{.EpochProgress}}
-                    </div>
+                            </td>
-                    <div>
+                            <td>
                                 {{.Accuracy}}
-                    </div>
+                            </td>
-                </div>
+                        </tr>
                     {{ end }}
+                </tbody>
+            </table>
             {{/* TODO Add ability to stop training */}}
         </div>
       {{/* Model Ready */}}

views/py/python_model_template.py

@@ -93,6 +93,10 @@ val_ds = list_ds.take(val_size)
 dataset = prepare_dataset(train_ds)
 dataset_validation   = prepare_dataset(val_ds)
 
+
+{{ if .LoadPrev }}
+model = tf.keras.saving.load_model('{{.LastModelRunPath}}')
+{{ else }}
 model = keras.Sequential([
     {{- range .Layers }}
     {{- if eq .LayerType 1}}
@@ -106,13 +110,14 @@ model = keras.Sequential([
     {{- end }}
     {{- end }}
 ])
+{{ end }}
 
 model.compile(
     loss=losses.SparseCategoricalCrossentropy(),
     optimizer=tf.keras.optimizers.Adam(),
     metrics=['accuracy'])
 
-his = model.fit(dataset, validation_data= dataset_validation, epochs=50, callbacks=[NotifyServerCallback()])
+his = model.fit(dataset, validation_data= dataset_validation, epochs={{.EPOCH_PER_RUN}}, callbacks=[NotifyServerCallback()])
 
 acc = his.history["accuracy"]
 
@@ -120,6 +125,6 @@ f = open("accuracy.val", "w")
 f.write(str(acc[-1]))
 f.close()
 
-tf.saved_model.save(model, "model")
 
-# model.save("model.keras", save_format="tf")
+tf.saved_model.save(model, "model")
+model.save("model.keras")