Using Collaborative Filtering For Dealing With Missing Values In Nuclear Safeguards Evaluation

Nuclear safeguards evaluation aims to verify that countries are not misusing nuclear programs for nuclear weapons purposes. Experts of the International Atomic Energy Agency (IAEA) carry out an evaluation process in which several hundred so findicat ors are assessed according to the information obtained from different sources, such as State declarations, on-site inspections, IAEA non-safeguards databases and other open sources. These assessments are synthesized in a hierarchical way to obtain a global assessm ent. Much information and many sources of information related to nuclear safeguards the imputed values.