Evaluation of Bitcoin Price Changes Before and After Covid-19 by Machine Learning, Time Series Analysis and Deep Learning Algorithms

Year 2020, Volume: 13 Issue: 3, 341 - 355, 31.07.2020

Uğur Kaya Fırat Akba İhsan Medeni Tunç Medeni

https://doi.org/10.17671/gazibtd.648424

Cited By: 3

Abstract

Blockchain technology, which has been become quite widespread in use recently, has become very popular with the Internet technology. Bitcoin, which has been developed with blockchain technology, is the virtual currency that holds the most market volume among virtual currencies. Due to the lack of a central authority that controls the virtual currency markets, this market is open to price manipulations and external interventions, so that guidance is needed for the end-investor to invest. Recently, a number of methods have started to be been used to meet this need.
In this study, various forecasting and classification methods about fluctuation in Bitcoin prices were evaluated together using machine learning, time-series analysis and deep learning methods. In this context, two separate datasets have been created based on the Bitcoin closing prices and up-to-down trends before and after the coronavirus pandemic. The success of forecasting and classification methods on these two datasets were evaluated and compared. As a result of the comparisons, Support Vector Machines method for the study conducted with the data before the pandemic, and ARIMA method for the study conducted with the data after the pandemic, had the most successful results.

Keywords

forecasting, Long-Short Term Memory(LSTM) algorithm, Auto Regressive Integrated Moving Average(ARIMA) method, Support Vector Machines(SVM) algorithm, bitcoin, blockchain technology, cryptocurrency, virtual currency, coronavirus

Covid-19 Öncesi ve Sonrasındaki Bitcoin Fiyat Değişimlerinin Makine Öğrenmesi, Zaman Serileri Analizi ve Derin Öğrenme Yöntemleriyle Değerlendirilmesi

Abstract

Son zamanlarda kullanımı oldukça yaygınlaşan blokzinciri teknolojisinin, İnternet teknolojisi ile beraber adı sıkça anılır olmaya başlamıştır. Blokzinciri teknolojisiyle geliştirilen Bitcoin, sanal para birimleri arasında en çok piyasa hacmini elinde bulunduran sanal para birimidir. Sanal para piyasalarının kontrolünü elinde bulunduran bir merkezi otoritenin olmaması sebebiyle fiyat manipülasyonlarına ve dışarıdan müdahalelere açık olan bu pazarda, en uçtaki yatırımcının yatırım yapabilmesi açısından yol gösterimine ihtiyaç duyulmaktadır. Son zamanlarda bu ihtiyacı karşılamak amacıyla birtakım yöntemler kullanılmaya başlanmıştır. Bu çalışmada makine öğrenmesi, zaman serileri analizi ve derin öğrenme yöntemleri kullanılarak Bitcoin fiyatlarındaki dalgalanma hakkında çeşitli tahminleme ve sınıflama yöntemleri beraber olarak değerlendirilmiştir. Bu bağlamda, koronavirüs pandemisi öncesi ve sonrasındaki Bitcoin kapanış fiyatları ve düşüş-yükseliş eğilimleri baz alınarak iki ayrı veri kümesi oluşturulmuştur. Bu veri kümeleri üzerinde tahmin ve sınıflama yöntemleri değerlendirilerek, başarıları karşılaştırılmıştır. Karşılaştırmalar sonucunda, pandemi öncesi verilerle yapılan çalışmada Destek Vektör Makineleri, pandemi sonrası verilerle yapılan çalışmada ise ARIMA en başarılı sonuçları vermiştir.

Keywords

tahminleme, Uzun Kısa Süreli Bellek Ağları(LSTM) algoritması, Bütünleşik Otoregresif Hareketli Ortalama(ARIMA) yöntemi, Destek Vektör Makineleri(SVM) algoritması, bitcoin, blokzinciri teknolojisi, kriptopara, sanal para, koronavirüs

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