TF-IDF scoring

Precision and recall

Precision = Relevant retrieved instances / All retrieved instances

BLEU

BLEU = exp(Σ(w_t * log(p_t)))

Batch normalization

Batch normalization formula: Y = (X - μ) / σ * γ + β

Normal distribution

Normal distribution PDF formula

PageRank

PageRank formula: PR(A) = (1-d) + d Σ(PR(C)/L(C))

convolution (f * g)(t) = ∫f(τ)g(t-τ)dτ

(f * g)(t) = ∫f(τ)g(t-τ)dτ