Noise mitigation in vector space representations of item collections

A computer program product, comprising:

• a non-transitory computer-readable storage device having computer-executable program instructions embodied thereon that when executed by a computer cause the computer to mitigate noise in vector space representations of item collections, the computer-executable program instructions comprising:
• computer-executable program instructions to receive a collection of items, each item characterized by a plurality of features;
• computer-executable program instructions to prepare a first vector space representative of the collection, wherein each item in the first vector space is represented by a vector that is a function of the features characterizing the item;
• computer-executable program instructions to first identify, based on information characteristic of the first vector space, at least one of:
• items contributing to first vector space noise, and
• features contributing to first vector space noise;
• computer-executable program instructions to first weight the first identified items and features to decrease the influence of the first identified items and features on vector spaces representative of the collection;
• computer-executable program instructions to prepare a second vector space representative of the collection based on the first weighted items and features.

A system to mitigate noise in vector space representations of item collections, the system comprising:

• a storage device;
• and
• a processor communicatively coupled to the storage device, wherein the processor executes application code instructions that are stored in the storage device to cause the system to:
• receive a collection of items, each item characterized by a plurality of features;
• prepare a first vector space representative of the collection, wherein each item in the first vector space is represented by a vector that is a function of the features characterizing the item;
• first identify, based on information characteristic of the first vector space, at least one of:
• items contributing to first vector space noise, and
• features contributing to first vector space noise;
• first weight the first identified items and features to decrease the influence of the first identified items and features on vector spaces representative of the collection;
• prepare a second vector space representative of the collection based on the first weighted items and features.