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Merlina, Nita, M.Kom., & Rahmat, Hidayat, S.Kom., 2012, Perancangan Sistem Pakar, Ghalia Indonesia, Yogyakarta.
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Levitin, Anany & Maria Levitin, 2011, Algorithmic Puzzles, Oxford University Press, Inc, New York. Supartha, 2014, Sistem Pakar Diagnosa Awal Penyakit Kulit Pada Sapi Bali dengan menggunakan metode Forward Chaining dan Certainty Factor, Semarang. I Komang Agoes Gelgel Aryawan, 2013, Aplikasi Sistem Pakar Diagnosa Kerusakan Pada Sepeda Motor 4 tak menggunakan Metode Certainty Factor berbasis Android, Bali. Decision Support and Business Intelligence Systems (Ninth ed.). Sistem Pakar & Pengembangannya (Pertama ed.). Expert Systems: Principles and Programming (Foourth ed.) Course Technology
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The test results show the comparison of Software and experts respectively 78.1% and 68.5%. The identification results are accompanied by Certainty Factor values that show the level of truth of the identification results. System test results show that the system is able to identify toxic gas poisoning based on the symptoms that exist even though these symptoms contain uncertainty which is presented together with the solution of solutions based on the results of identification using Certainty Factor. Software design method uses UML (Unified Modeling Language). The form of research used is a case study with the research method used is Research and Development (R & D), data collection methods in the form of primary data, namely interviews with an expert, while, secondary data is using documentation study methods.
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The best Certainty Factor value based on the highest Certainty Factor value to produce a more optimal level of trust. Certainty Factor method is the level of certainty of the system against a fact or rule to produce a diagnosis. The Toxic Gas Poisoning Identification Expert System adopts the Certainty Factor (CF) method to analyze based on the symptoms that occur.
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