Table 8 BLEU-4 score by sentence length.

From: Deep neural architectures for Kashmiri-English machine translation

Sentence length

BLEU-4 (RNN)

BLEU-4 (attention)

BLEU-4 (transformer)

Short (≤ 8 words)

0.215

0.248

0.285

Medium (9–15 words)

0.188

0.233

0.271

Long (> 15 words)

0.141

0.207

0.264