Tuberculosis Disease Diagnosis Expert System Method of Certainty Factor

Nowadays computers are widely used in the medical world to aid in the diagnosis of a disease. The most frequently encountered Penyakityang adalahpenyakitTuberculosis. Therefore, prevention of tuberculosis disease begins with diagnosing dini.Salah a technique in diagnosing tuberculosis disease is an expert system. Therefore research inibertujuan construct an expert system that is used for early diagnosis of Tuberculosis disease by gejalayang in anguish. The system displays the amount of credence to the possibility of disease symptoms yangdiderita users. The value of these beliefs using Certainty Factor, because the CF is able to determine the value of trust in a greater uncertainty and be able to demonstrate absolute confidence.


Introduction
The expert system is a computer-based system that uses knowledge, facts or reasoning techniques in solving problems that normally can only be resolved by an expert in the field of tertentu.Oleh Therefore, in the medical world, many emerging applications of expert systems. This expert system is able to diagnose a variety of diseases in humans, one tuberculosis. [1] Tuberculosis is an infectious disease caused by bacteria Mikobakterium tuberculosis. This bacteria is very difficult treated and takes time to treat it. These bacteria are often found in the lungs compared to elsewhere in the body. [2] Sometimes society does not want to consult a doctor and tend to ignore it. The reason that easel is cost, shame, the length of the queues and the fear of fear when exposed to the disease have more severe. For some people, to see a doctor need not cost you a little bit not to mention having to buy medicine and must undergo a check that is not a short queue. In addition, the limitations of the lung specialist makinmemperburuk this state. That's why we need a system that can help the community in diagnosing disease will Tuberculosissehingga that people can more easily consult to anticipate the impact worse. The system is not to replace the position of an expert, but to popularize the knowledge and experience of an expert. One system is able to assist the diagnosis is an expert system. to see a doctor need not cost you a little bit not to mention having to buy medicine and must undergo a check that is not a short queue. In addition, the limitations of the lung specialist makinmemperburuk this state. That's why we need a system that can help the community in diagnosing disease will Tuberculosissehingga that people can more easily consult to anticipate the impact worse. The system is not to replace the position of an expert, but to popularize the knowledge and experience of an expert. One system is able to assist the diagnosis is an expert system. to see a doctor need not cost you a little bit not to mention having to buy medicine and must undergo a check that is not a short queue. In addition, the limitations of the lung specialist makinmemperburuk this state. That's why we need a system that can help the community in diagnosing disease will Tuberculosissehingga that people can more easily consult to anticipate the impact worse. The system is not to replace the position of an expert, but to popularize the knowledge and experience of an expert. One system is able to assist the diagnosis is an expert system. That's why we need a system that can help the community in diagnosing disease will Tuberculosissehingga that people can more easily consult to anticipate the impact worse. The system is not to replace the position of an expert, but to popularize the knowledge and experience of an expert. One system is able to assist the diagnosis is an expert system. That's why we need a system that can help the community in diagnosing disease will Tuberculosissehingga that people can more easily consult to anticipate the impact worse. The system is not to replace the position of an expert, but to popularize the knowledge and experience of an expert. One system is able to assist the diagnosis is an expert system. [3] An expert system is a part of artificial intelligence in the form of an information system with the knowledge of experts so that it can be used as a media consulting for anyone in need. Knowledge of experts in this system is used as a base by an expert system in answering questions or consultation. One method to deal with uncertainty iscertainty Factor. [4]certainty Factoris a measure of certainty to a fact or rule.
Certainty Factor provides a concept (MB) is the belief hypothesis is affected by symptoms and (MD) is the uncertainty hypothesis that is affected by the symptoms. This method was chosen because it can display the value of the percentage of confidence in the fact that identified, but it is also this method in sekalihitung can only handle two data alone so that its accuracy is maintained. [5] 2. Theory

Certainty Factor (Certainty Factor)
The : hypothesis e : Event / facts In one case there will be more than one size of the increase in trust in accordance with many of the symptoms that are owned by hypothesis, so the formula MB and MD as follows: [6]

Research methods
This method describes the methods to be used in the study, then used a method Certanty Factor To help the preparation of this study, the need for a clear framework arrangement in phases, the following research framework:

Identification of problems
Data collection Data analysis CF counting system design system implementation Systems testing

Analysis and Results
Analysis GrandMed datadi Hospital is located at Jl. Medan -Lubukpakam Km. 25 No. 66 Lubukpakam District of Deli Serdang and conducted interviews to physicians who are experts in tuberculosis. [7]

Rule Tuberculosis with Certainty Factor Method
Production rule is usually written in the form of if-then. Rule inidapat connected impliksi two parts, namely jikadanmaka. If the premise section filled with the part then also be true. A rule consists of clauses. There is a premise clauses and clauses So on a rule. A rule consists of some of the more than one premise and conclusion. Between the premise and the conclusion may be associated with "OR" or "AND".
The ygtersedia rule base in the rules that form the pair state action "IF (IF) met or circumstances occur THEN (THEN)" adalahsebagai follows:     Then the value of the percentage level of user confidence in tuberculosis based on the above cases are: Percentage = CF Disease * 100 = 0.9993200148 * 100 = 99.93% From the results of the process using the method of Certainty Factor above, it can be seen that the patient "Great Possibilities" underwent pulmonary tuberculosis disease-paru with 99.93% confidence value.