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def custom_loss(y_true, y_pred): | ||
def custom_loss_wrapper(normFac=1): | ||
''' | ||
cutmoized loss function to improve the recoil response, | ||
customized loss function to improve the recoil response, | ||
by balancing the response above one and below one | ||
''' | ||
import tensorflow.keras.backend as K | ||
import tensorflow as tf | ||
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px_truth = K.flatten(y_true[:, 0]) | ||
py_truth = K.flatten(y_true[:, 1]) | ||
px_pred = K.flatten(y_pred[:, 0]) | ||
py_pred = K.flatten(y_pred[:, 1]) | ||
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pt_truth = K.sqrt(px_truth*px_truth + py_truth*py_truth) | ||
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#px_truth1 = px_truth / pt_truth | ||
#py_truth1 = py_truth / pt_truth | ||
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# using absolute response | ||
# upar_pred = (px_truth1 * px_pred + py_truth1 * py_pred)/pt_truth | ||
upar_pred = K.sqrt(px_pred * px_pred + py_pred * py_pred) - pt_truth | ||
pt_cut = pt_truth > 0. | ||
upar_pred = tf.boolean_mask(upar_pred, pt_cut) | ||
pt_truth_filtered = tf.boolean_mask(pt_truth, pt_cut) | ||
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#filter_bin0 = pt_truth_filtered < 50. | ||
filter_bin0 = tf.logical_and(pt_truth_filtered > 50., pt_truth_filtered < 100.) | ||
filter_bin1 = tf.logical_and(pt_truth_filtered > 100., pt_truth_filtered < 200.) | ||
filter_bin2 = tf.logical_and(pt_truth_filtered > 200., pt_truth_filtered < 300.) | ||
filter_bin3 = tf.logical_and(pt_truth_filtered > 300., pt_truth_filtered < 400.) | ||
filter_bin4 = pt_truth_filtered > 400. | ||
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upar_pred_pos_bin0 = tf.boolean_mask(upar_pred, tf.logical_and(filter_bin0, upar_pred > 0.)) | ||
upar_pred_neg_bin0 = tf.boolean_mask(upar_pred, tf.logical_and(filter_bin0, upar_pred < 0.)) | ||
upar_pred_pos_bin1 = tf.boolean_mask(upar_pred, tf.logical_and(filter_bin1, upar_pred > 0.)) | ||
upar_pred_neg_bin1 = tf.boolean_mask(upar_pred, tf.logical_and(filter_bin1, upar_pred < 0.)) | ||
upar_pred_pos_bin2 = tf.boolean_mask(upar_pred, tf.logical_and(filter_bin2, upar_pred > 0.)) | ||
upar_pred_neg_bin2 = tf.boolean_mask(upar_pred, tf.logical_and(filter_bin2, upar_pred < 0.)) | ||
upar_pred_pos_bin3 = tf.boolean_mask(upar_pred, tf.logical_and(filter_bin3, upar_pred > 0.)) | ||
upar_pred_neg_bin3 = tf.boolean_mask(upar_pred, tf.logical_and(filter_bin3, upar_pred < 0.)) | ||
upar_pred_pos_bin4 = tf.boolean_mask(upar_pred, tf.logical_and(filter_bin4, upar_pred > 0.)) | ||
upar_pred_neg_bin4 = tf.boolean_mask(upar_pred, tf.logical_and(filter_bin4, upar_pred < 0.)) | ||
#upar_pred_pos_bin5 = tf.boolean_mask(upar_pred, tf.logical_and(filter_bin5, upar_pred > 0.)) | ||
#upar_pred_neg_bin5 = tf.boolean_mask(upar_pred, tf.logical_and(filter_bin5, upar_pred < 0.)) | ||
norm = tf.reduce_sum(pt_truth_filtered) | ||
dev = tf.abs(tf.reduce_sum(upar_pred_pos_bin0) + tf.reduce_sum(upar_pred_neg_bin0)) | ||
dev += tf.abs(tf.reduce_sum(upar_pred_pos_bin1) + tf.reduce_sum(upar_pred_neg_bin1)) | ||
dev += tf.abs(tf.reduce_sum(upar_pred_pos_bin2) + tf.reduce_sum(upar_pred_neg_bin2)) | ||
dev += tf.abs(tf.reduce_sum(upar_pred_pos_bin3) + tf.reduce_sum(upar_pred_neg_bin3)) | ||
dev += tf.abs(tf.reduce_sum(upar_pred_pos_bin4) + tf.reduce_sum(upar_pred_neg_bin4)) | ||
#dev += tf.abs(tf.reduce_sum(upar_pred_pos_bin5) + tf.reduce_sum(upar_pred_neg_bin5)) | ||
dev /= norm | ||
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loss = 0.5*K.mean((px_pred - px_truth)**2 + (py_pred - py_truth)**2) | ||
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#loss += 200.*dev | ||
loss += 5000.*dev | ||
return loss | ||
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def custom_loss(y_true, y_pred): | ||
import tensorflow.keras.backend as K | ||
import tensorflow as tf | ||
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px_truth = K.flatten(y_true[:, 0]) | ||
py_truth = K.flatten(y_true[:, 1]) | ||
px_pred = K.flatten(y_pred[:, 0]) | ||
py_pred = K.flatten(y_pred[:, 1]) | ||
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pt_truth = K.sqrt(px_truth*px_truth + py_truth*py_truth) | ||
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#px_truth1 = px_truth / pt_truth | ||
#py_truth1 = py_truth / pt_truth | ||
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# using absolute response | ||
# upar_pred = (px_truth1 * px_pred + py_truth1 * py_pred)/pt_truth | ||
upar_pred = K.sqrt(px_pred * px_pred + py_pred * py_pred) - pt_truth | ||
pt_cut = pt_truth > 0. | ||
upar_pred = tf.boolean_mask(upar_pred, pt_cut) | ||
pt_truth_filtered = tf.boolean_mask(pt_truth, pt_cut) | ||
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#filter_bin0 = pt_truth_filtered < 50./normFac | ||
filter_bin0 = tf.logical_and(pt_truth_filtered > 50./normFac, pt_truth_filtered < 100./normFac) | ||
filter_bin1 = tf.logical_and(pt_truth_filtered > 100./normFac, pt_truth_filtered < 200./normFac) | ||
filter_bin2 = tf.logical_and(pt_truth_filtered > 200./normFac, pt_truth_filtered < 300./normFac) | ||
filter_bin3 = tf.logical_and(pt_truth_filtered > 300./normFac, pt_truth_filtered < 400./normFac) | ||
filter_bin4 = pt_truth_filtered > 400./normFac | ||
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upar_pred_pos_bin0 = tf.boolean_mask(upar_pred, tf.logical_and(filter_bin0, upar_pred > 0.)) | ||
upar_pred_neg_bin0 = tf.boolean_mask(upar_pred, tf.logical_and(filter_bin0, upar_pred < 0.)) | ||
upar_pred_pos_bin1 = tf.boolean_mask(upar_pred, tf.logical_and(filter_bin1, upar_pred > 0.)) | ||
upar_pred_neg_bin1 = tf.boolean_mask(upar_pred, tf.logical_and(filter_bin1, upar_pred < 0.)) | ||
upar_pred_pos_bin2 = tf.boolean_mask(upar_pred, tf.logical_and(filter_bin2, upar_pred > 0.)) | ||
upar_pred_neg_bin2 = tf.boolean_mask(upar_pred, tf.logical_and(filter_bin2, upar_pred < 0.)) | ||
upar_pred_pos_bin3 = tf.boolean_mask(upar_pred, tf.logical_and(filter_bin3, upar_pred > 0.)) | ||
upar_pred_neg_bin3 = tf.boolean_mask(upar_pred, tf.logical_and(filter_bin3, upar_pred < 0.)) | ||
upar_pred_pos_bin4 = tf.boolean_mask(upar_pred, tf.logical_and(filter_bin4, upar_pred > 0.)) | ||
upar_pred_neg_bin4 = tf.boolean_mask(upar_pred, tf.logical_and(filter_bin4, upar_pred < 0.)) | ||
#upar_pred_pos_bin5 = tf.boolean_mask(upar_pred, tf.logical_and(filter_bin5, upar_pred > 0.)) | ||
#upar_pred_neg_bin5 = tf.boolean_mask(upar_pred, tf.logical_and(filter_bin5, upar_pred < 0.)) | ||
norm = tf.reduce_sum(pt_truth_filtered) | ||
dev = tf.abs(tf.reduce_sum(upar_pred_pos_bin0) + tf.reduce_sum(upar_pred_neg_bin0)) | ||
dev += tf.abs(tf.reduce_sum(upar_pred_pos_bin1) + tf.reduce_sum(upar_pred_neg_bin1)) | ||
dev += tf.abs(tf.reduce_sum(upar_pred_pos_bin2) + tf.reduce_sum(upar_pred_neg_bin2)) | ||
dev += tf.abs(tf.reduce_sum(upar_pred_pos_bin3) + tf.reduce_sum(upar_pred_neg_bin3)) | ||
dev += tf.abs(tf.reduce_sum(upar_pred_pos_bin4) + tf.reduce_sum(upar_pred_neg_bin4)) | ||
#dev += tf.abs(tf.reduce_sum(upar_pred_pos_bin5) + tf.reduce_sum(upar_pred_neg_bin5)) | ||
dev /= norm | ||
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loss = 0.5*normFac**2*K.mean((px_pred - px_truth)**2 + (py_pred - py_truth)**2) | ||
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#loss += 200.*dev | ||
loss += 5000.*dev | ||
return loss | ||
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return custom_loss |