Recording medium storing conversion program and conversion device

A recording medium storing a conversion program for converting a biological signal generated in association with a human activity into an instruction signal for activating a robot, where executing of the conversion program causing one or more computers to perform operations comprising operations as:

• an acquisition unit configured to sequentially acquire feature vectors for a biological signal;
• a unit data storage unit configured to store unit data which associates an identifier of a unit, a representative value corresponding to a feature vector belonging to the unit, and energy corresponding to the feature vector belonging to the unit;
• a class data storage unit configured to store class data that associates an identifier of a class with an identifier of a unit included in the class;
• a unit attribute update unit configured to attenuate energy of the unit as time elapses, and specify a unit associated with a representative value approximating a new feature vector acquired by the acquisition unit, and update a representative value and energy of the specified unit based on the new feature vector;
• a unit update unit configured to delete from the unit data, data related to an identifier of a unit satisfying a predetermined condition due to attenuation of the energy, and when the acquisition unit acquires a plurality of similar feature vectors outside a predetermined range of a representative value of the unit of the unit data within a predetermined time, add to the unit data, data associating an identifier of a new unit with a representative value and energy of the new unit;
• a class update unit configured to, when there is another unit having an attribute within a predetermined range of an attribute of the new unit, add an identifier of the new unit in the class data as an identifier of a unit included in a class having the identifier of the other unit associated therewith, when there is no unit having an attribute within a predetermined range of an attribute of the new unit, add data associating an identifier of a new class with an identifier of the new unit to the class data, and when the unit data has no data related to an identifier of a unit associated with the class identifier in the class data, delete the class identifier from the class data;
• a motion update unit configured to update motion data by associating, with an identifier of a class acquired after updating the class data, an identifier of a motion corresponding to the class;
• and
• an instruction output unit configured to, when the acquisition unit acquires a feature vector, specify an identifier of a class including a unit to which the acquired feature vector belongs, and output an instruction signal corresponding to the specified identifier of the class by referring to the motion data.