A rule-based expert system for the diagnosis of biotic damage on Pinus sylvestris.
1992
Vaekevae J. | Saaremaa H.
A consultative expert system was built to aid in the diagnosis of biotic damage on Scots pine (Pinus sylvestris). Diagnostic knowledge from experts and books was transferred to about 250 production rules concerning 48 damaging agents. Uncertainties were taken into consideration by certain factors. The diagnosis is based on site factors, tree characteristics, date, observations of symptoms and damage, and, in some cases, insect descriptions. This paper presents the functioning and rule structure of the system and the results of qualitative evaluations. Diagnosis was reasonably correct in 81% of 63 test cases tried by experts. Of the 25 test users, 84% considered the system at least fairly successful with typical cases, and 77% of them found the system at least quite useful in their own work. Narrowness of expertise, slowness and lack of pictures were considered as the system's shortcomings.
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