Computer scienceData scienceNLPNLP metricsClassic NLP metrics

BLEU

Two systems

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In this task, you've got the single-sentence predictions from 2 different models and 2 references:

Model 1	The bubble tea is made with fresh tea, milk, and tapioca pearls, which give it a unique and chewy texture.
Model 2	Bubble tea is a cold, refreshing drink that is often decorated with toppings such as ice cream, cincau, or fruits.
References	The bubble tea consists of tea, milk, and tapioca pearls, which are chewy balls made from cassava starch. Bubble tea is typically served cold and is often decorated with toppings such as fruit, jelly, or ice cream.

Calculate the BLEU scores for the two described models. The output should be in the following format:

$\text{Answer}= \begin{cases} \text{BLEU}_{\text{model 1}} + 1, & \text{if }\ \text{the first model showed better BLEU scores }\ \\ \text{BLEU}_{\text{model 2}} + 2, & \text{otherwise} \end{cases}$

Round the answer up to the second decimal.

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