These products also address issues such as data discontinuity and sparseness. Sparseness of proxy records results in considerable uncertainty for earlier periods. Musically, the album utilizes ambience and instrumental sparseness as an extension of this theme. Because of the sparseness, a network visualization is an appropriate way to represent this dataset. Other studies have had difficulty classifying it, due to the sparseness of the original material. The flora of Sylt is shaped by the island's original sparseness. This represents the aspect of "sparseness" in SDM. In areas of language modeling, the Web has been used to address data sparseness. WordPerfect gained praise for its "look of sparseness" and clean display. They found that the sparseness of the coding increased with the size of the patch. The researchers believe that they have found evidence for sparseness, rather than for grandmother cells. The sparseness of the sets is concealed by camera angles and by the lighting. Additionally as stimulus size increased, so did the sparseness.