import tensorflow as tf
from tensorflow.keras.models import Sequential
from tensorflow.keras.layers import Embedding, LSTM, Dense, Flatten

def create_text_neural_network(vocab_size, embedding_dim, input_length, num_classes):
    model = Sequential([
        Embedding(input_dim=vocab_size, output_dim=embedding_dim, input_length=input_length),
        LSTM(128, return_sequences=True),
        LSTM(128),
        Dense(64, activation='relu'),
        Dense(num_classes, activation='softmax')
    ])
    model.compile(optimizer='adam', loss='sparse_categorical_crossentropy', metrics=['accuracy'])
    return model

def create_gating_network(input_shape, num_experts):
    model = Sequential([
        Flatten(input_shape=input_shape),
        Dense(128, activation='relu'),
        Dense(num_experts, activation='softmax')
    ])
    model.compile(optimizer='adam', loss='categorical_crossentropy', metrics=['accuracy'])
    return model