Update README.md

README.md

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-# Efficient Conformer: Progressive Downsampling and Grouped Attention for Automatic Speech Recognition [Paper](https://arxiv.org/abs/2109.01163)**
+# Efficient Conformer: Progressive Downsampling and Grouped Attention for Automatic Speech Recognition [Paper](https://arxiv.org/abs/2109.01163)
 
 ## Efficient Conformer Encoder
 Inspired from previous works done in Automatic Speech Recognition and Computer Vision, the Efficient Conformer encoder is composed of three encoder stages where each stage comprises a number of Conformer blocks using grouped attention. The encoded sequence is progressively downsampled and projected to wider feature dimensions, lowering  the amount of computation while achieving better performance. Grouped multi-head attention reduce attention complexity by grouping neighbouring time elements along the feature dimension before applying scaled dot-product attention.