Task: Question Generation
Input (English): We notice that the concatenation consistently outperforms the gated-attention mechanism for both training and testing instructions. We suspect that the gated-attention is useful in the scenarios where objects are described in terms of multiple attributes, but it has no to harming effect when it comes to the order connectors.
Output (English): Why they conclude that the usage of Gated-Attention provides no competitive advantage against concatenation in this setting?