Client playlist generation

A music service provider, comprising:

• storage media configured to maintain media asset relationship data that identifies music tracks;
• a communication device configured to communicate projection vectors to a client device that is configured to utilize the projection vectors to generate an automatic playlist for any one of the music tracks that is selected as a starting music track of the automatic playlist;
• at least a memory and a processor that implement an asset model generation service configured to:
• determine track-to-track relationships from the media asset relationship data to identify similar music tracks that can be included in the automatic playlist of the similar music tracks;
• generate the projection vectors of the track-to-track relationships for each of the music tracks utilizing random projection, each projection vector for a music track initialized to a dimension length for elements of the projection vector that identifies the similar music tracks, and for each of the similar music tracks:
• apply a hashing algorithm to a track identifier that is unique to a similar music track to derive an integer number;
• generate a series of random number from a numbers for the track identifier from the integer number that is unique to a similar music track, the series of random number numbers that are generated corresponding to the dimension length of the projection vector;
• generate a product by multiplying one of the random number numbers by a weight of the track-to-track relationship between the music track and the similar music track, the weight of the track-to-track relationship indicating a similarity between the music track and the similar music track;
• add the product to the projection vector for the music track at a next position index in the projection vector, the product being added to the projection vector as an element of the projection vector;
• and
• quantize the product for each element of the projection vector for the music track to produce a binary representation of the elements as either zero (0) or positive one (+1).

A client device, comprising:

• a storage media configured to maintain a library of music tracks and projection vectors of track-to-track relationships for each of the music tracks, a projection vector for a music track identifying similar music tracks;
• at least a memory and a processor that implement a playlist generator configured to:
• communicate a request to a music service provider for the projection vectors when the client device is on-line and configured for communication with the music service provider;
• receive the projection vectors from the music service provider that generates the projection vectors of the track-to-track relationships for each of the music tracks by random projection, each projection vector for a music track initialized to a dimension length for elements of the projection vector that identifies the similar music tracks, and for each of the similar music tracks:
• apply a hashing algorithm to a track identifier that is unique to a similar music track to derive an integer number;
• utilize a random number generator to generate a series of random numbers between negative one (−1) and positive one (+1) for the similar music track from the integer number, the series of random numbers that are generated corresponding to the dimension length of the projection vector;
• generate a product by multiplying one of the random numbers by a weight of the track-to-track relationship between the music track and the similar music track, the weight of the track-to-track relationship indicating a similarity between the music track and the similar music track;
• and
• add the product to the projection vector for the music track at a next position index in the projection vector;
• quantize the product for each element of the projection vector for the music track to produce a binary representation of the elements;
• and
• utilize the projection vectors to generate an automatic playlist for any one of the music tracks that is selected as a starting music track of the automatic playlist, the automatic playlist configured to be generated when the client device is off-line from the music service provider.