Conference Paper

# Grading System Recommendations for Students using Fuzzy Mamdani Logic

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... Fuzzification is a process that places a crisp value, also called as a firm value, with a membership degree value of only 0 and 1 into a fuzzy set form with a membership degree value located in the range of values 0 to 1. In boolean logic, the result is always 0 or 1 (true or false), while in fuzzy logic, the result is somewhere between 0 and 1 [10]. The fuzzy set is a linguistic value that is then processed based on the membership function limits [11]. ...
... Defuzzification is the process of combining the outputs of the previous processes (fuzzification and inference) to produce a fuzzy output, which is transformed back into firm numbers [14]. In this study, defuzzification was carried out using the centroid method to calculate the crisp value with the centre point (y*) of the fuzzy region [10]. The formula for the centroid method is shown in (1) ...
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Counting is a material that is considered not easy for most elementary school students. Not only from the considerations that are considered challenging but also the influence of the teacher's teaching style which makes bored, and boring is also a problem. In this study, an educational game balloon shooter prime numbers were made. In game design, the Mamdani fuzzy algorithm is applied to calculate the jumrance of balloons with the input variables of remaining_balloon and remaining_time. The application of the Mamdani fuzzy algorithm is considered successful, as evidenced by the high percentage rate of appearance of all balloons, reaching 76.4%.
... Motode fuzzy yang digunakan pada penelitian ini menggunakan Metode Fuzzy Mamdani yang terdiri dari tiga tahapan: fuzzifikasi, mesin inferensi, dan defuzzifikasi [17] yang digunakan untuk merekomendasikan nilai kadar unsur hara Nitrogen (N), Fosfor (P), dan Kalium (K) yang terkandung dalam tanah. Rekomendasi diambil berdasarkan besar nilai NPK yang masuk dalam klasifikasi Rendah, Sedang, atau Tinggi. ...
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Profil kesuburan tanah merupakan hal yang penting dalam pertanian karena merupakan media utama dalam bercocok tanam. Penggunaan pupuk kimia dan pestisida secara terus menerus dan berlebihan akan dapat menimbulkan perubahan sifat fisika dan kimia tanah yang pada akhirnya akan dapat menyebabkan tanah menjadi kritis. Hal ini akan berpengaruh pada produktivitas hasil panen para petani. Salah satu upaya untuk mengetahui tingkat kesuburan tanah adalah melalui diagnosa unsur hara dalam tanah. Tujuan penelitian ini adalah untuk membuat pemodelan sistem optimalisasi deteksi kadar unsur hara dalam tanah menggunakan fuzzy. Melalui simulasi ini akan didapatkan data kadar unsur hara tanah dengan parameter unsur hara N (Nitrogen), P (Fosfor) , K (Kalium) menggunakan labview. Berdasarkan parameter tersebut kemudian dihasilkan berapa nilai kadar unsur hara NPK dalam tanah apakah rendah, sedang atau tinggi.
... In the Boolean system truth value, one represents the absolute truth value, and zero represents the absolute false value. i.e., one is true, and zero is false [2]. However, in the case of a fuzzy logic system, we have intermediate values, which are partially true and partially false. ...
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... The approach to solving this problem is by using the Fuzzy Mamdani algorithm implemented in the system. This algorithm has quite a fast execution time and uses less memory usage [8]. It also can be used for grading based on some input points. ...
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Over time, educational games that exist is increasing. It is very unfortunate that there are some educational games that are too focused on the educational aspect so that they forget their identity as games that aim to relieve fatigue. This research was conducted to avoid this problem. To provide an interesting experience from the game being played, the artificial intelligence system is implemented, the first one is Bezier Curve Algorithm. An algorithm that forms a curve trajectory that will become a cross motion of obstacles. Finite State Machine for the Non-Player Character (NPC) behavior. The last one is Fuzzy Mamdani algorithm, it is an algorithm that will be used in calculating the score in the game. By applying all the algorithm to some aspects of the game, there will be an interesting experience in every game play, because one gameplay will not be similar to the previous one. This game was developed on the Android platform. The test was conducted on 33 high school/vocational high school students with the age range (15-20 years). The results obtained, 97% of respondents agree that the game is interesting for them and 90.9% feel interested in Indonesian debate after playing the game.
... Based on these considerations and reasons, making equipment in the form of a prototype is necessary. Moreover, a tool to measure the level of turbidity of water with the fuzzy method [3,4,7,10,11] and a microcontroller still needs to improve the level of precision. so that it is obtained the water's turbidity level and as a guide for changing the water of ornamental fish aquariums. ...
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... By comparing FIS and HFIS, it is observed that the HFIS has higher classification performance. Khomeiny et al. [32] used the Mandani fuzzy method to construct a fuzzy reasoning system that provides teachers with scoring suggestions. The system took students' test scores and students' behavior scores as input, and output suggestions by combining fuzzy rules obtained from artificial summaries. ...
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