AUTOMATIC SELECTION OF ITEMS FOR A COMPUTERIZED GRAPHICAL ADVERTISEMENT DISPLAY USING A COMPUTER-GENERATED MULTIDIMENSIONAL VECTOR SPACE

A computer accesses a multidimensional vector space that comprises embeddings of catalog item embeddings, each catalog item having one or more item attributes and corresponding item attribute values, and embeddings of associated item attribute values. An identification of one or more seed catalog items is received. Embeddings of each of one or more seed catalog items and embeddings of associated item attribute values are identified within the vector space. For each one of the seed catalog items, for each of the item attributes of the seed catalog item, an item representation in the vector space is located based upon a combination of the embedding of the seed catalog item and of an embedding of an item attribute value representing an item attribute value that is similar to the corresponding item attribute value of the seed catalog item. For each item representation, one or more embeddings of candidate catalog items that are close to the product representation are selected. For each item representation, the seed catalog items and one or more candidate catalog items are selected for display.