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The T5 framework can be utilized for tasks like evaluating the quality of a translation. The input is structured as a text string beginning with a task-specific prefix, such as 'Score the translation from English to Chinese.', followed by the source and target sentences. For instance, the input would be: `[CLS] Score the translation from English to Chinese. English: when in Rome, do as the Romans do. Chinese: 人 在 罗马 就 像 罗马 人 一样 做事 。`

Example of a T5 Translation Scoring Sample

A researcher wants to use a text-to-text model to evaluate the quality of a translation from French to Spanish. The source sentence is 'Bonjour, comment ça va ?' and the translated sentence is 'Hola, ¿cómo estás?'. Based on the standard input format for such tasks, which of the following strings should be provided to the model?

A data scientist is trying to use a text-to-text model to evaluate the quality of a translation from Spanish to English. They provide the following input string:

`[CLS] Spanish: ¿Dónde está la biblioteca? English: Where is the library?`

The model returns a poor, nonsensical score. Identify the critical missing component in the input string and explain why its absence causes the model to fail at the intended task.

Debugging a T5 Model Input

A data scientist is attempting to use a text-to-text model to score the quality of a translation from English to German. However, the model is producing unexpected and unhelpful results. Below is the exact input string they are providing to the model. Analyze this input, identify at least two distinct structural errors based on the standard format for this type of task, and explain how to correct them to create a valid input string.

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