16. The method of claim 14 , wherein determining dimensions of the image display environment comprises: determining a distribution score that is indicative of the distribution of quality scores of the images that are responsive to the search query; determining a product of the distribution score and the image intent score; and determining a number of rows of images to display in the image display environment from the product of the distribution score and the image intent score.
14. The method of claim 13 , further comprising: determining an image intent score for the search query; and generating the image insertion request when the image intent score exceeds an intent threshold.