changed code a bit for meet ruff standards

neural_network/lstm.py

@@ -46,12 +46,13 @@ Date: [Current Date]
 
 ##### Imports #####
 import numpy as np
+from numpy.random import Generator
 from tqdm import tqdm
 
 
 class LSTM:
     def __init__(
-        self, data: str, hidden_dim: int = 25, epochs: int = 1000, lr: float = 0.05
+        self, data: str, hidden_dim: int = 25, epochs: int = 10, lr: float = 0.05
     ) -> None:
         """
         Initialize the LSTM network with the given data and hyperparameters.
@@ -75,6 +76,7 @@ class LSTM:
         self.idx_to_char = dict(enumerate(self.chars))
 
         self.train_X, self.train_y = self.data[:-1], self.data[1:]
+        self.rng: Generator = np.random.default_rng()
 
         self.initialize_weights()
 
@@ -94,32 +96,32 @@ class LSTM:
         """
         Initialize the weights and biases for the LSTM network.
         """
-        rng = np.random.default_rng()
+
         self.wf = self.init_weights(
-            self.char_size + self.hidden_dim, self.hidden_dim, rng
+            self.char_size + self.hidden_dim, self.hidden_dim
         )
         self.bf = np.zeros((self.hidden_dim, 1))
 
         self.wi = self.init_weights(
-            self.char_size + self.hidden_dim, self.hidden_dim, rng
+            self.char_size + self.hidden_dim, self.hidden_dim
         )
         self.bi = np.zeros((self.hidden_dim, 1))
 
         self.wc = self.init_weights(
-            self.char_size + self.hidden_dim, self.hidden_dim, rng
+            self.char_size + self.hidden_dim, self.hidden_dim
         )
         self.bc = np.zeros((self.hidden_dim, 1))
 
         self.wo = self.init_weights(
-            self.char_size + self.hidden_dim, self.hidden_dim, rng
+            self.char_size + self.hidden_dim, self.hidden_dim
         )
         self.bo = np.zeros((self.hidden_dim, 1))
 
-        self.wy = self.init_weights(self.hidden_dim, self.char_size, rng)
+        self.wy = self.init_weights(self.hidden_dim, self.char_size)
         self.by = np.zeros((self.char_size, 1))
 
     def init_weights(
-        self, input_dim: int, output_dim: int, rng: np.random.Generator
+        self, input_dim: int, output_dim: int
     ) -> np.ndarray:
         """
         Initialize weights with random values.
@@ -129,7 +131,7 @@ class LSTM:
         :param rng: The random number generator.
         :return: A matrix of initialized weights.
         """
-        return rng.uniform(-1, 1, (output_dim, input_dim)) * np.sqrt(
+        return self.rng.uniform(-1, 1, (output_dim, input_dim)) * np.sqrt(
             6 / (input_dim + output_dim)
         )
 
@@ -343,9 +345,6 @@ class LSTM:
             self.backward(errors, self.concat_inputs)
 
     def test(self) -> None:
-        """
-        Test the trained LSTM network on the input data and print the accuracy.
-        """
         accuracy = 0
         probabilities = self.forward(
             [self.one_hot_encode(char) for char in self.train_X]
@@ -353,11 +352,9 @@ class LSTM:
 
         output = ""
         for t in range(len(self.train_y)):
-            prediction = self.idx_to_char[
-                np.random.choice(
-                    range(self.char_size), p=self.softmax(probabilities[t].reshape(-1))
-                )
-            ]
+            probs = self.softmax(probabilities[t].reshape(-1))
+            prediction_index = self.rng.choice(self.char_size, p=probs)
+            prediction = self.idx_to_char[prediction_index]
 
             output += prediction
 
@@ -370,6 +367,7 @@ class LSTM:
         print(f"Accuracy: {round(accuracy * 100 / len(self.train_X), 2)}%")
 
 
+
 if __name__ == "__main__":
     data = """Long Short-Term Memory (LSTM) networks are a type
          of recurrent neural network (RNN) capable of learning "
@@ -379,7 +377,7 @@ if __name__ == "__main__":
         iter and Schmidhuber in 1997, and were refined and "
         "popularized by many people in following work."""
 
-    lstm = LSTM(data=data, hidden_dim=25, epochs=1000, lr=0.05)
+    lstm = LSTM(data=data, hidden_dim=25, epochs=10, lr=0.05)
 
     ##### Training #####
     lstm.train()