Ethnomathematics elements in Batik Bali using backpropagation method

Abstract

Abstract. Batik is one of traditional arts that has been established by the UNESCO as Indonesia's cultural heritage. Batik has varieties and motifs, and each motifs has its own uniqueness but seems similar, that makes it difficult to identify. This study aims to develop an application that can identify typical batik Bali with etnomatematics elements on it. Etnomatematics is a study that shows relation between culture and mathematics concepts. Etnomatematics in Batik Bali is more to geometrical concept in line of strong Balinese culture element. The identification process is use backpropagation method. Steps of backpropagation methods are image processing (including scalling and tresholding image process). Next step is insert the processed image to an artificial neural network. This study resulted an accuracy of identification of batik Bali that has Etnomatematics elements on it.

Ethnomathematics: Pranatamangsa System and the Birth-Death Ceremonial in Yogyakarta

“…Furthermore, there are several ethnics which implemented of Ethnomathematics in their life in Cipatujah, West Java, for example, they apply the traditional mathematical concept in the way they determine the time to sail for fishing, and the way they construct their houses (Kusuma, Dewanto, Ruchjana, & Abdullah, 2017). The motifs of batik are an Ethnomathematics context related to lines, angles, triangles, quadrilaterals, circles, and transformation geometry, which exist in several cultures in Indonesia (Risdiyanti & Prahmana, 2018;Lestari, Irawan, Rahayu, & Parwati, 2018;Pramudita & Rosnawati, 2019;Irawan, Lestari, Rahayu, & Wulan, 2019). However, few researchers have explored mathematical modeling in Yogyakarta's literature.…”

Exploring Mathematical Concepts and Philosophical Values in Jember Batik

“…Several studies about ethnomathematics have been carried out on several types of batik in different locations in Indonesia. such as the research conducted by Arwanto (2017) on the typical Cirebon Trusmi batik, which shows that in Cirebon Cirebon batik contains mathematical elements, including geometric concepts of symmetry, transformation (reflection, translation, and rotation), and congruence.While Lestari, et al (2018) in their research results show thatethnomathematics in Batik Bali is more to geometrical concept in line of strong Balinese culture element. Tresnadi, et al (2015) findings suggest that the values found in Indonesian batik ornaments in the Nitiki game clearly show thepatterns of how traditional culture of batik survives and thrives in Indonesian society, as well asshow the flexibility of batik against the current development of modern culture, including itsintegration as culture-based content in interactive media.Therefore, the researcher wants to show how the results of ethnomathematics exploration in Jember batik and what mathematical concepts are contained in the batik motifs that are made and reveal the philosophical value contained therein.…”

Pengembangan Soal Numerasi Berbasis Konteks Nilai Budaya Primbon Jawa

“…Beberapa penelitian tentang etnomatematika menjadi topik menarik diantaranya penggunaan motif batik berkaitan dengan garis, sudut, segitiga, segiempat, lingkaran, dan geometri transformasi berdasarkan kebudayaan di Indonesia (Risdiyanti, et. al, 2019;Lestari, et. al., 2018;Irawan, et.…”