"""
Script that trains GraphConv models on qm7 dataset.
"""
from __future__ import print_function
from __future__ import division
from __future__ import unicode_literals

import numpy as np

np.random.seed(123)
import tensorflow as tf

tf.random.set_seed(123)
import deepchem as dc

# Load Tox21 dataset
tasks, datasets, transformers = dc.molnet.load_qm7(featurizer='GraphConv',
                                                   move_mean=True)
train_dataset, valid_dataset, test_dataset = datasets

# Fit models
metric = [
    dc.metrics.Metric(dc.metrics.mean_absolute_error, mode="regression"),
    dc.metrics.Metric(dc.metrics.pearson_r2_score, mode="regression")
]

# Batch size of models
batch_size = 64

model = dc.models.GraphConvModel(len(tasks),
                                 batch_size=batch_size,
                                 learning_rate=0.001,
                                 mode="regression")

# Fit trained model
model.fit(train_dataset, nb_epoch=50)

print("Evaluating model")
train_scores = model.evaluate(train_dataset, metric, transformers)
valid_scores = model.evaluate(valid_dataset, metric, transformers)
