A cause inferring device which infers causes with improved accuracy and efficiency. A phenomenon item (F) other than phenomenon items (A, B and C) for which frequency-of-occurrence data are already inputted is selected based on the degree of association data regarding cause items (2, 3 and 4) having...http://www.google.de/patents/US5950183?utm_source=gb-gplus-sharePatent US5950183 - Cause inferring device
