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      Analisis Kecekungan Harga Saham TLKM Menggunakan Visibility Graph dengan Pendekatan Maximum Clique dan Induced Path

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      Date
      2026
      Author
      Anggraeni, Aura Dwi
      Septyanto, Fendy
      Budiarti, Retno
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      Abstract
      Penelitian ini menganalisis pola kecekungan harga saham PT Telekomunikasi Indonesia Tbk (TLKM) menggunakan metode Visibility Graph dengan pendekatan Maximum Clique dan Induced Path. Data yang digunakan berupa harga penutupan mingguan periode 1 Januari 2007 hingga 1 Januari 2025 sebanyak 933 observasi. Data ditransformasikan menjadi graf dan dianalisis menggunakan algoritma Bron Kerbosch. Hasil menunjukkan terdapat 17 Maximum Clique dengan ukuran maksimum 14 simpul yang membentuk pola cekung ke atas, mengindikasikan fase kenaikan harga dengan percepatan. Sementara itu, Induced Path terpanjang terdiri dari 10 simpul yang menunjukkan pola cembung ke bawah, mencerminkan fase penurunan yang melandai. Analisis 150 periode terakhir menunjukkan pergerakan harga berada pada fase konsolidasi dengan tren penurunan yang relatif stabil. Temuan ini menunjukkan bahwa Visibility Graph mampu memberikan interpretasi geometris terhadap dinamika harga saham.
       
      This study analyzes the concavity patterns of the stock price of PT Telekomunikasi Indonesia Tbk (TLKM) using the Visibility Graph method with Maximum Clique and Induced Path approaches. The data used consist of weekly closing prices from January 1, 2007, to January 1, 2025, totaling 933 observations. The data are transformed into a graph and analyzed using the Bron–Kerbosch algorithm. The results show that there are 17 Maximum Cliques with a maximum size of 14 nodes, forming a concave upward pattern, which indicates a phase of price increase with acceleration. Meanwhile, the longest Induced Path consists of 10 nodes, forming a concave downward pattern, reflecting a decelerating downward trend. Analysis of the last 150 periods indicates that the price movement is in a consolidation phase with a relatively stable downward trend. These findings suggest that the Visibility Graph method can provide a geometric interpretation of stock price dynamics.
       
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      http://repository.ipb.ac.id/handle/123456789/174314
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      Copyright © 2020 Library of IPB University
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      Contact Us | Send Feedback
      Indonesia DSpace Group 
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