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severinsimmler avatar severinsimmler commented on June 7, 2024

Maybe via loss function?

image

See also: https://www.diva-portal.org/smash/get/diva2:1680166/FULLTEXT01.pdf

And also:

chaine/chaine/_core/crfsuite/lib/crf/src/train_l2sgd.c

Lines 179 to 197 in 3a2626b

/* Loop for instances. */
sum_loss = 0.;
for (i = 0; i < N; ++i)
{
const crfsuite_instance_t *inst = dataset_get(trainset, i);
/* Update various factors. */
eta = 1 / (lambda * (t0 + t));
decay *= (1.0 - eta * lambda);
gain = eta / decay;
/* Compute the loss and gradients for the instance. */
gm->set_weights(gm, w, decay);
gm->set_instance(gm, inst);
gm->objective_and_gradients(gm, &loss, w, gain, inst->weight);
sum_loss += loss;
++t;
}

from chaine.

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