added tracker & settings

teng-ml/main.py

@@ -13,9 +13,14 @@ import torch
 import torch.nn as nn
 import torch.nn.utils.rnn as rnn_utils
 from torch.utils.data import DataLoader
+import json
+import time
+import pickle
 
 from .util.transform import ConstantInterval, Normalize
 from .util.data_loader import load_datasets, LabelConverter
+from .util.epoch_tracker import EpochTracker
+from .util.settings import MLSettings
 
 def test_interpol():
     file = "/home/matth/data/2023-04-27_glass_8.2V_179mm000.csv"
@@ -40,90 +45,111 @@ if __name__ == "__main__":
         if torch.backends.mps.is_available()
         else "cpu"
     )
-    print(f"Using device: {device}")
+
 
     labels = LabelConverter(["foam", "glass", "kapton", "foil", "cloth", "rigid_foam"])
     t_const_int = ConstantInterval(0.01)
     t_norm = Normalize(0, 1)
-    train_set, test_set = load_datasets("/home/matth/Uni/TENG/testdata", labels, voltage=8.2, transforms=[t_const_int], train_to_test_ratio=0.7, random_state=42)
+    transforms = [ t_const_int, t_norm ]
+    st = MLSettings(num_features=1,
+                    num_layers=1,
+                    hidden_size=1,
+                    bidirectional=True,
+                    transforms=transforms,
+                    num_epochs=40,
+                    batch_size=3,
+                    labels=labels,
+                )
+
+    print(f"Using device: {device}")
+
+
+    train_set, test_set = load_datasets("/home/matth/Uni/TENG/data", labels, voltage=8.2, transforms=st.transforms, train_to_test_ratio=0.7, random_state=42)
 
     # train_loader = iter(DataLoader(train_set))
     # test_loader = iter(DataLoader(test_set))
-    train_loader = iter(DataLoader(train_set, batch_size=3, shuffle=True))
-    test_loader = iter(DataLoader(test_set, batch_size=3, shuffle=True))
-# , dtype=torch.float32
-    sample = next(train_loader)
-    print(sample)
-
-    feature_count = 1
-
+    train_loader = DataLoader(train_set, batch_size=st.batch_size, shuffle=True)
+    test_loader = DataLoader(test_set, batch_size=st.batch_size, shuffle=True)
 
     class RNN(nn.Module):
-        def __init__(self, input_size, hidden_size, num_layers, num_classes, if_bidirectional):
+        def __init__(self, input_size, hidden_size, num_layers, num_classes, bidirectional):
             super(RNN, self).__init__()
             self.num_layers = num_layers
             self.hidden_size = hidden_size
-            self.if_bidirectional = if_bidirectional
-            self.lstm = nn.LSTM(input_size, hidden_size, num_layers, batch_first=True, bidirectional=if_bidirectional)
+            self.is_bidirectional = bidirectional
+            self.lstm = nn.LSTM(input_size, hidden_size, num_layers, batch_first=True, bidirectional=bidirectional)
             # x = (batch_size, sequence, feature)
 
-            if if_bidirectional == True:
+            if bidirectional == True:
               self.fc = nn.Linear(hidden_size * 2, num_classes)
             else:
               self.fc = nn.Linear(hidden_size, num_classes)
 
+            self.softmax = nn.Softmax(dim=1)
 
         def forward(self, x):
             # x: batches, length, features
-            print(f"forward pass")
-            D = 2 if self.if_bidirectional == True else 1
+            # print(f"forward pass")
+            D = 2 if self.is_bidirectional == True else 1
 
-            print(f"x({x.shape})=...")
+            # print(f"x({x.shape})=...")
             batch_size = x.shape[0]
-            print(f"batch_size={batch_size}")
+            # print(f"batch_size={batch_size}")
 
             h0 = torch.zeros(D * self.num_layers, batch_size, self.hidden_size).to(device)
-            print(f"h0({h0.shape})=...")
+            # print(f"h1({h0.shape})=...")
             c0 = torch.zeros(D * self.num_layers, batch_size, self.hidden_size).to(device)
             x.to(device)
             _, (h_n, _) = self.lstm(x, (h0, c0))
-            print(f"h_n({h_n.shape})=...")
+            # print(f"h_n({h_n.shape})=...")
             final_state  = h_n.view(self.num_layers, D, batch_size, self.hidden_size)[-1]     # num_layers, num_directions, batch, hidden_size
-            print(f"final_state({final_state.shape})=...")
+            # print(f"final_state({final_state.shape})=...")
 
             if D == 1:
-              X = final_state.squeeze()
+                X = final_state.squeeze()  # TODO what if batch_size == 1
             elif D == 2:
               h_1, h_2 = final_state[0], final_state[1]  # forward & backward pass
-              #X = h_1 + h_2                # Add both states
-              X = torch.cat((h_1, h_2), 1)         # Concatenate both states, X-size: (Batch, hidden_size * 2）
+              #X = h_1 + h_2                        # Add both states
+              X = torch.cat((h_1, h_2), 1)          # Concatenate both states, X-size: (Batch, hidden_size * 2）
             else:
                 raise ValueError("D must be 1 or 2")
+            # print(f"X({X.shape})={X}")
             output = self.fc(X) # fully-connected layer
-            print(f"out({output.shape})={output}")
-
+            # print(f"out({output.shape})={output}")
+            output = self.softmax(output)
+            # print(f"out({output.shape})={output}")
             return output
 
-    model=RNN(input_size=1, hidden_size=8, num_layers=3, num_classes=18, if_bidirectional=True).to(device)
+    model=RNN(input_size=st.num_features, hidden_size=st.hidden_size, num_layers=st.num_layers, num_classes=len(labels), bidirectional=st.bidirectional).to(device)
     loss_func = torch.nn.CrossEntropyLoss()
     optimizer = torch.optim.Adam(model.parameters(), lr=0.02)
     scheduler = torch.optim.lr_scheduler.ExponentialLR(optimizer, gamma=0.95)
 
-    print(model)
+    print(f"model:", model)
+    print(f"loss_func={loss_func}")
+    print(f"optimizer={optimizer}")
+    print(f"scheduler={scheduler}")
+
+
+
+    epoch_tracker = EpochTracker(labels)
+
+    print(f"train_loader")
+    for i, (data, y) in enumerate(train_loader):
+        print(y)
+        print(f"{i:3} - {torch.argmax(y, dim=1, keepdim=False)}")
+
 
 # training 
-    for ep in range(40):
-        train_correct = 0
-        train_total = 0
-        val_correct = 0
-        val_total = 0
-        for data, y in train_loader:
+    epoch_tracker.train_begin()
+    for ep in range(st.num_epochs):
+        for i, (data, y) in enumerate(train_loader):
+            # print(data, y)
             # data = batch, seq, features
-            print(ep, "Train")
             # print(f"data({data.shape})={data}")
             x = data[:,:,[2]].float()   # select voltage data
-            print(f"x({x.shape}, {x.dtype})=...")
-            print(f"y({y.shape}, {y.dtype})=...")
+            # print(f"x({x.shape}, {x.dtype})=...")
+            # print(f"y({y.shape}, {y.dtype})=...")
             # length = torch.tensor([x.shape[1] for _ in range(x.shape[0])], dtype=torch.int64)
             # print(f"length({length.shape})={length}")
             # batch_size = x.shape[0]
@@ -134,6 +160,7 @@ if __name__ == "__main__":
             # print(data.batch_sizes[0])
             # print(data)
             out = model(x)
+            # print(f"out({out.shape}={out})")
             loss = loss_func(out, y)
             # print(loss)
 
@@ -141,28 +168,54 @@ if __name__ == "__main__":
             loss.backward()         # backpropagation, compute gradients
             optimizer.step()        # apply gradients
 
-            predicted = torch.max(torch.nn.functional.softmax(out), 1)[1]
-            train_total += y.size(0)
-            train_correct += (predicted == y).sum().item()
-
+            # predicted = torch.max(torch.nn.functional.softmax(out), 1)[1]
+            predicted = torch.argmax(out, dim=1, keepdim=False)  # -> [ label_indices ]
+            correct = torch.argmax(y, dim=1, keepdim=False)  # -> [ label_indices ]
+            # print(f"predicted={predicted}, correct={correct}")
+            # train_total += y.size(0)
+            # train_correct += (predicted == correct).sum().item()
+            epoch_tracker.train(correct, predicted)
+        epoch_tracker.next_epoch(loss)
+        print(epoch_tracker.get_last_epoch_summary_str())
         scheduler.step()
+    t_end = time.time()
 
-        for data, y in test_loader:
-            print(ep, "Test")
-            x = data[:,:,[2]]
-            print(f"x({x.shape})={x}")
-            # length = torch.tensor(x.shape[1], dtype=torch.int64)
-            # print(f"length={length}")
-            # batch_size = x.shape[0]
-            # print(f"batch_size={batch_size}")
-            # v = x.view(batch_size, -1, feature_count)
-            # data = rnn_utils.pack_padded_sequence(v.type(torch.FloatTensor), length, batch_first=True).to(device)
+    with torch.no_grad():
+        for i, (data, y) in enumerate(test_loader):
+            # print(ep, "Test")
+            x = data[:,:,[2]].float()
             out = model(x)
             loss = loss_func(out, y)
 
-            predicted = torch.max(torch.nn.functional.softmax(out), 1)[1]
-            val_total += y.size(0)
-            val_correct += (predicted == y).sum().item()
+            predicted = torch.argmax(out, dim=1, keepdim=False)  # -> [ label_indices ]
+            correct = torch.argmax(y, dim=1, keepdim=False)  # -> [ label_indices ]
+            # print(f"predicted={predicted}, correct={correct}")
+            # val_total += y.size(0)
+            # val_correct += (predicted == correct).sum().item()
 
-        print("epoch: ", ep + 1, 'Accuracy of the Train: %.2f %%' % (100 * train_correct / train_total), 'Accuracy of the Test: %.2f %%' % (100 * val_correct / val_total))
+            epoch_tracker.test(correct, predicted)
+
+        # print(f"train_total={train_total}, val_total={val_total}")
+        # if train_total == 0: train_total = -1
+        # if val_total == 0: val_total = -1
+
+        # print(f"epoch={ep+1:3}: Testing accuracy={100 * val_correct / val_total:.2f}")
+    # print(f"End result: Training accuracy={100 * train_correct / train_total:.2f}%, Testing accuracy={100 * val_correct / val_total:.2f}, training took {t_end - t_begin:.2f} seconds")
+
+    epoch_tracker.get_test_statistics()
+    # epoch_tracker.()
+
+    # print(epoch_tracker.get_training_summary_str())
+    print(epoch_tracker.get_training_count_per_label())
+
+    model_name = st.get_name()
+    # save the settings, results and model
+    with open(model_name + "_settings.pkl", "wb") as file:
+        pickle.dump(st, file)
+
+    with open(model_name + "_results.pkl", "wb") as file:
+        pickle.dump(epoch_tracker, file)
+
+    with open(model_name + "_model.pkl", "wb") as file:
+        pickle.dump(model, file)
 

teng-ml/util/data_loader.py

@@ -7,7 +7,7 @@ import pandas as pd
 from sklearn.model_selection import train_test_split
 
 # groups: date, name, voltage, distance, index
-re_filename = r"(\d{4}-\d{2}-\d{2})_([a-zA-Z]+)_(\d{1,2}(?:\.\d*)?)V_(\d+(?:\.\d*)?)mm(\d+).csv"
+re_filename = r"(\d{4}-\d{2}-\d{2})_([a-zA-Z_]+)_(\d{1,2}(?:\.\d*)?)V_(\d+(?:\.\d*)?)mm(\d+).csv"
 
 class LabelConverter:
     def __init__(self, class_labels):
@@ -26,6 +26,9 @@ class LabelConverter:
     def __contains__(self, value):
         return value in self.class_labels
 
+    def __len__(self):
+        return len(self.class_labels)
+
     def get_labels(self):
         return self.class_labels.copy()
 
@@ -43,7 +46,7 @@ class Datasample:
         self.data = None
 
     def __repr__(self):
-        size = self.data.size if self.data else "Unknown"
+        size = self.data.size if self.data is not None else "Unknown"
         return f"{self.label}-{self.index}: dimension={size}, recorded at {self.date} with U={self.voltage}V, d={self.distance}mm"
 
     def _load_data(self):
@@ -52,7 +55,7 @@ class Datasample:
 
     def get_data(self):
         """[[timestamps, idata, vdata]]"""
-        if not self.data:
+        if self.data is None:
             self._load_data()
         return self.data
 
@@ -68,13 +71,14 @@ class Dataset:
 
     def __getitem__(self, index):
         data, label = self.datasamples[index].get_data(), self.datasamples[index].label_vec
+        # print(f"loading dataset {self.datasamples[index]}")
         if type(self.transforms) == list:
             for t in self.transforms:
                 data = t(data)
         elif self.transforms:
             data = self.transforms(data)
         # TODO
-        return data[:400], label
+        return data[:2000], label
 
     def __len__(self):
         return len(self.datasamples)

teng-ml/util/epoch_tracker.py

@@ -0,0 +1,83 @@
+from ..util.data_loader import LabelConverter
+import time
+import torch
+
+class EpochTracker:
+    """
+    Track progress through epochs and generate statistics
+    """
+    def __init__(self, labels: LabelConverter):
+        # Training
+        self.accuracy = []
+        self.loss = []
+        self.times = []  # timestamps for each epoch end
+        self.trainings = []
+        self.training_indices = [[]]  # epoch, batch_nr, (correct_indices, predicted_indices), ind:ex_nr
+        self._current_epoch = 0
+
+        self.labels = labels
+
+        # Testing
+        self.tests = []  # (correct_indices, predicted_indices)
+
+    def train_begin(self):
+        """for time tracking"""
+        self.times.append(time.time())
+
+    # TRAINING
+    def train(self, correct_indices: torch.Tensor, predicted_indices: torch.Tensor):
+        self.training_indices[self._current_epoch].append((correct_indices, predicted_indices))
+
+    def next_epoch(self, loss):
+        self.times.append(time.time())
+        self.loss.append(loss)
+        correct_predictions = 0
+        total_predictions = 0
+        for predicted_indices, correct_indices in self.training_indices[self._current_epoch]:
+            correct_predictions += (predicted_indices == correct_indices).sum().item()
+            total_predictions += predicted_indices.size(0)
+        accuracy = 100 * correct_predictions / total_predictions
+        self.accuracy.append(accuracy)
+        self._current_epoch += 1
+        self.training_indices.append([])
+
+    def get_last_epoch_summary_str(self):
+        """call after next_epoch()"""
+        return f"Epoch {self._current_epoch:3}: Accuracy={self.accuracy[-1]:.2f}, Loss={self.loss[-1]:.3f}, Training duration={self.times[-1] - self.times[0]:.2f}s"
+    def get_last_epoch_summary(self):
+        """
+        @returns accuracy, loss, training time
+        """
+        return self.accuracy[-1], self.loss[-1], self.times[-1] - self.times[0]
+
+    def get_training_count_per_label(self):
+        count_per_label = [ 0 for _ in range(len(self.labels)) ]
+        for i in range(len(self.training_indices)):
+            for j in range(len(self.training_indices[i])):
+                for k in range(self.training_indices[i][j][0].size(0)):
+                    # epoch, batch_nr, 0 = correct_indices, correct_index_nr
+                    count_per_label[self.training_indices[i][j][0][k]] += 1
+        return count_per_label
+
+    def __len__(self):
+        return len(self.accuracy)
+
+    def __getitem__(self, idx):
+        return (self.accuracy[idx], self.loss[idx])
+
+    # TESTING
+    def test(self, correct_indices: torch.Tensor, predicted_indices: torch.Tensor):
+        """
+        @param correct_indices and predicted_indices: 1 dim Tensor
+        """
+        for i in range(correct_indices.size(0)):
+            self.tests.append((correct_indices[i], predicted_indices[i]))
+
+
+    def get_test_statistics(self):
+        # label i, label_j was predicted when label_i was correct 
+        statistics = [ [ 0 for _ in range(len(self.labels))] for _ in range(len(self.labels)) ]
+        for corr, pred in self.tests:
+            statistics[corr][pred] += 1
+        print(statistics)
+        return statistics

teng-ml/util/settings.py

@@ -0,0 +1,35 @@
+from ..util.data_loader import LabelConverter
+
+class MLSettings:
+    """
+    Manage model and training settings for easy saving and loading
+    """
+    def __init__(self,
+                 num_features=1,
+                 num_layers=1,
+                 hidden_size=1,
+                 bidirectional=True,
+                 transforms=[],
+                 num_epochs=10,
+                 batch_size=5,
+                 labels=LabelConverter([]),
+             ):
+        self.num_features = num_features
+        self.num_layers = num_layers
+        self.hidden_size = hidden_size
+        self.num_epochs = num_epochs
+        self.bidirectional = bidirectional
+        self.transforms = transforms
+        self.batch_size = batch_size
+        self.labels = labels
+
+    def get_name(self):
+        """
+        F = num_features
+        L = num_layers
+        H = hidden_size
+        B = bidirectional
+        T = #transforms
+        E = #epochs
+        """
+        return f"F{self.num_features}L{self.num_layers}H{self.hidden_size}B{'1' if self.bidirectional else '0'}T{len(self.transforms)}"

teng-ml/util/transform.py

@@ -20,6 +20,9 @@ class Normalize:
         a -= self.low
         return a
 
+    def __repr__(self):
+        return f"Normalize(low={self.low}, high={self.high})"
+
 
 class ConstantInterval:
     """
@@ -49,3 +52,6 @@ class ConstantInterval:
         # sug_interval = 0.5 * avg_interval
         # print(f"Average interval: {avg_interval}, Suggestion: {sug_interval}")
 
+    def __repr__(self):
+        return f"ConstantInterval(interval={self.interval})"
+