14. One or more computer-readable storage media comprising computer executable instructions for automatically synthesizing products into an on-line catalog, the computer executable instructions including instructions for automatically synthesizing information corresponding to existing products into the on-line catalog, comprising: obtaining, from a plurality of incoming data sources, incoming information corresponding to an existing product in the on-line catalog, the incoming information including attribute names and corresponding attribute values and excluding a product name and a product identifier of the existing product; determining a source-to-source attribute correspondence comprising determining a correspondence between a first incoming attribute name included in a first incoming product schema of a first incoming data source and a second incoming attribute name included in a second incoming product schema of a second incoming data source; segmenting and normalizing the incoming information; clustering the segmented and normalized incoming information according to, in part, the source-to-source attribute correspondence so that each cluster corresponds to a different product; extracting one or more attribute names and corresponding attribute values corresponding to a particular cluster corresponding to a particular existing product, and including the extracted one or more attribute names and attribute values in the catalog schema; fusing the extracted one or more attribute names and attribute values with other attribute names and attribute values in the catalog schema corresponding to the particular existing product, including determining one or more representative attribute names and corresponding representative attribute values; updating, with the representative catalog attribute value, a particular entry in the on-line catalog corresponding to the particular existing product; and displaying the one or more representative attribute names and corresponding representative attribute values in an entry of the on-line catalog corresponding to the particular existing product.
14. One or more computer-readable storage media comprising computer executable instructions for automatically synthesizing products into an on-line catalog, the computer executable instructions including instructions for automatically synthesizing information corresponding to existing products into the on-line catalog, comprising: obtaining, from a plurality of incoming data sources, incoming information corresponding to an existing product in the on-line catalog, the incoming information including attribute names and corresponding attribute values and excluding a product name and a product identifier of the existing product; determining a source-to-source attribute correspondence comprising determining a correspondence between a first incoming attribute name included in a first incoming product schema of a first incoming data source and a second incoming attribute name included in a second incoming product schema of a second incoming data source; segmenting and normalizing the incoming information; clustering the segmented and normalized incoming information according to, in part, the source-to-source attribute correspondence so that each cluster corresponds to a different product; extracting one or more attribute names and corresponding attribute values corresponding to a particular cluster corresponding to a particular existing product, and including the extracted one or more attribute names and attribute values in the catalog schema; fusing the extracted one or more attribute names and attribute values with other attribute names and attribute values in the catalog schema corresponding to the particular existing product, including determining one or more representative attribute names and corresponding representative attribute values; updating, with the representative catalog attribute value, a particular entry in the on-line catalog corresponding to the particular existing product; and displaying the one or more representative attribute names and corresponding representative attribute values in an entry of the on-line catalog corresponding to the particular existing product. 17. The one or more computer-readable storage media of claim 14 , wherein the computer-executable instructions for obtaining the incoming information from the plurality of incoming data sources comprise computer-executable instructions for obtaining unstructured data and structured data in a plurality of different incoming schemas from: a review sentiment, a rating, an offer for sale, a review helpfulness indicator, click data, an image, a Frequently Asked Question (FAQ), a question and answer, a related product, a rank, specification information, a video, a price prediction signal, a recommendation, a product hierarchy, a product scorecard, an opinion index, and a product manual via at least one of feed ingestion or website extraction.