Bayu Priyambadha

Ontology and semantic matching for diabetic food recommendations

Foods recommendation for diabetes patients is indispensable for controlling blood sugar levels. Currently, the foods preparation is done by a nutrition expert. The patients dependence on the nutrition experts is very high, thus the selection of foods could not be done independently. The Automation system to determine foods combination for diabetic patients is needed to solve these problems. In this study, the automation system has been designed and implemented. The technologies used in this research are the OWL and SWRL. There are few researches that explore an automation process of foods recommendation for diabetes patients using the technology of OWL and SWRL. Domain knowledge based on Ontology is needed to process foods composition automatically. However, using SWRL and OWL technology is not enough, because the accuracy of the words required. A semantic ontology understanding was added using weighted tree similarity method to specify the composition of foods for diabetic patients. 73% data were able to be correctly predicted by this method.

Case study on semantic clone detection based on code behavior

The activities of copy and paste fragments of code from a source code into the other source code, with or without modification, are known as the code cloning. The process is often done by software developers because its easier than generate code manually. In the other hand, this behavior leads to the increasing of effort to maintenance the code. Research on detecting the presence of cloning has been done. Detection of cloned semantically is a detection method that still needs a deepening. One of the detection methods of semantic cloning is based on the behavior of the code. The code behavior detected by looking at input, output and the effects of the method. Methods with the same input, output and effect will show that the function of the method is the same. However, the detection method based on input, output and effect could not be used in a void method and method without parameters. There is no explanations about input, output and effect in that kind of methods. In this case, the solution is needed to find the input, output and the effects of the method. This research is a concern on how to find an input, output and effect in void and non-parameterized method. Detection of input, output and effects done using PDG (Program Dependence Graph). The result is used to reconstruct void and non-parameterizes method. Trial is performed on each method (without exception) using random input data to get the behavior methods. Trial is done using small size source code from jDraw. From the result of the trial process, can be concluded that semantic clone detection using the methods behavior approach is sound very promising. This method can also detect type 1, type 2 and type 3 clone beside the semantic clone itself with an accuracy about 89%.

Implementasi Sensor Cahaya Sebagai Pengontrol Keseimbangan Robot Beroda Dua Menggunakan Kontroler PID

Abstrak Dengan menggabungkan Sistem Kontrol, sensor dan motor Servo diharapkan Robot segway dapat direalisasikan. Dalam penelitian ini Sistem Kontrol yang digunakan adalah metode PID, sedangkan sensor yang akan digunakan adalah cahaya yang merepresentasikan sudut kemiringan terhadap bumi. Dengan input berupa Error sudut dan Del Error sudut terhadap bumi maka didapatkan hasil PID kontroller berupa angular rate yang digunakan untuk mengontrol kedua rodanya. Robot Segway memiliki rise time/fall time, settling time dan Robot Segway mampu mencapai kesetimbangannya kembali (steady state) setelah mendapatkan gangguan dari luar. Kata kunci : Robot kesetimbangan, sensor cahaya, PID kontroler Abstract By combining the Control System, sensors and Servos motors are expected to Segway can be realized. In this research use the PID method, while the sensor to be used is the light that represents the elevation angle of the earth. With the input is angel Error and angel Del Error of the earth then the results obtained in the form of angular rate PID Controller is used to Control the two wheels. Segway Robot has a rise time / fall time, settling time and Segway Robot can reach the balance again (steady state) after get a outside disturbance. Keywords : Self -balancing robot, light sensor, PID Controller