Before revision:  whereas, CNN recognizes high-level patterns of dominant units with respect to the sentence and thread context. The attention mechanism is applied on top of CNN to further highlight the high-level representations that capture any important units contributing to a desirable summary.
After revision:  whereas, CNN recognizes high-level patterns of dominant units with respect to the sentence and thread . Attention mechanism is applied on top of CNN to further highlight the high-level representations that capture any important units contributing to a desirable summary.