class="sd">    - `Exploring the Limits of Transfer Learning with a Unified Text-to-Text</span>
<span class="sd">      Transformer &lt;https://arxiv.org/abs/1910.10683&gt;`__</span>
<span class="sd">    - https://github.com/google-research/text-to-text-transfer-transformer</span>

<span class="sd">    **Paper Abstract:**</span>

<span class="sd">    *Transfer learning, where a model is first pre-trained on a data-rich task</span>
<span class="sd">    before being fine-tuned on a downstream task, has emerged 