Implementasi Metode Certainty Factor Pada Sistem Pakar Diagnosis Penyakit Tanaman Kakao Berbasis Web

Cocoa is one of the agricultural commodities in West Nusa Tenggara. The problems often
experienced by cocoa farmers cannot be separated from various disturbing factors such as
disease, climate and errors in maintenance. Farmers' limited knowledge in diagnosing diseases
in cocoa plants often results in mistakes that result in crop failure. This research produces an
expert system that can diagnose diseases in cocoa plants and provide control solutions so that
farmers can carry out prevention and treatment efforts quickly and precisely. The Certaninty
Factor method is used because this method is suitable for measuring certainty in diagnosing
disease, apart from that, this method can only process two data in one calculation so that the
accuracy of the data can be maintained. The software development method used is Waterfall
with a design tool using the Unified Modeling Language Diagram. Functional testing has been
carried out using the Black Box Testing Method with 100% valid results and accuracy testing
with 20 cases resulted in an accuracy level of 100%.