Information handling

An information handling method in which information items are mapped to respective nodes in an array of nodes by mutual similarity of said information items, such that similar information items map to nodes at similar positions in said array of nodes;

• a mapping relationship being defined between feature data relating to an information item and nodes in said array of nodes;
• said method comprising the steps of:
• (a) for each of a group of information items, detecting feature data representing each of a set of properties of that information item;
• and
• (b) for the ensemble of feature data corresponding to said group of information items, defining a mapping between said feature data and nodes in said array of nodes;
• in which said set of properties includes one or more properties selected from the list comprising:
• hue statistical distribution;
• luminance statistical distribution;
• brightness statistical distribution;
• colour component statistical distribution;
• image shape;
• face detection statistics;
• audio power;
• audio sub-band powers;
• audio brightness;
• audio bandwidth;
• audio pitch;
• audio mel-frequency properties;
• and
• colour space pixel position properties

An information handling system in which information items are mapped to respective nodes in an array of nodes by mutual similarity of said information items, such that similar information items map to nodes at similar positions in said array of nodes;

• a mapping relationship being defined between feature data relating to an information item and nodes in said array of nodes;
• said system comprising:
• a first detector to detect feature data representing each of a set of properties of each of a group of information items;
• a second detector to detect more significant and less significant properties within the ensemble of feature data corresponding to said group of information items;
• logic to associate said feature data relating to more significant properties so as to generate a reduced feature vector for each information item;
• and
• mapping logic to define a mapping between said reduced feature vectors and nodes in said array of nodes.

An information handling system in which information items are mapped to respective nodes in an array of nodes by mutual similarity of said information items, such that similar information items map to nodes at similar positions in said array of nodes;

• a mapping relationship being defined between feature data relating to an information item and nodes in said array of nodes;
• said system comprising:
• a detector to detect, for each of a group of information items, feature data representing each of a set of properties of that information item;
• and
• mapping logic, operable in respect of the ensemble of feature data corresponding to said group of information items, to define a mapping between said feature data and nodes in said array of nodes;
• in which said set of properties includes one or more properties selected from the list comprising:
• hue statistical distribution;
• luminance statistical distribution;
• brightness statistical distribution;
• colour component statistical distribution;
• image shape;
• face detection statistics;
• audio power;
• audio sub-band powers;
• audio brightness;
• audio bandwidth;
• audio pitch;
• audio mel-frequency properties;
• and
• colour space pixel position properties.