5. The system of claim 2 , wherein determining an insertion score comprises: determining central tendency score from relevance scores of images that are to be displayed in the image display environment, each relevance score being a measure of relevance of a corresponding image to the search query.
6. The system of claim 5 , wherein determining an insertion score further comprises: determining an image intent score for the search query; and determining the insertion score from the image intent score and the central tendency score.