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ÇѱÛÁ¦¸ñ(Korean Title) ¿ª¼ø ¿öÅ© Æ÷¿öµå °ËÁõÀ» ÀÌ¿ëÇÑ ¾ÏȣȭÆó °¡°Ý ¿¹Ãø
¿µ¹®Á¦¸ñ(English Title) An Accurate Cryptocurrency Price Forecasting using Reverse Walk-Forward Validation
ÀúÀÚ(Author) ÀÓ¼ÒÇö   ÀüÁØö   So-hyun Lim   Jun-chul Chun   ¾ÈÇö   Àå¹éö   Hyun Ahn   Baekcheol Jang  
¿ø¹®¼ö·Ïó(Citation) VOL 23 NO. 04 PP. 0045 ~ 0055 (2022. 08)
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(Korean Abstract)
¾ÏȣȭÆó ½ÃÀåÀÇ ±Ô¸ð´Â ³¯ÀÌ °¥¼ö·Ï Ä¿Á®°¡°í ÀÖÀ¸¸ç, ´ëÇ¥ÀûÀÎ ¾ÏȣȭÆóÀÎ ºñÆ®ÄÚÀÎÀÇ °æ¿ì ½Ã°¡ÃѾ×ÀÌ 500Á¶¸¦ ³Ñ¾î¼¹´Ù. ÀÌ¿¡ µû¶ó ¾ÏȣȭÆóÀÇ °¡°ÝÀ» ¿¹ÃøÇÏ·Á´Â ¿¬±¸µµ ¸¹ÀÌ ÀÌ·ç¾îÁ³À¸¸ç, À̵éÀº ´ëºÎºÐ Áֽİ¡°ÝÀ» ¿¹ÃøÇÏ´Â ¹æ¹ý·Ð°ú À¯»ç¼ºÀ» ¶ç´Â ¿¬±¸µéÀÌ´Ù. ÇÏÁö¸¸ ¼±Ç࿬±¸¸¦ ºñÃç ºÃÀ» ¶§ Áֽİ¡°Ý¿¹Ãø°ú ´Þ¸® ¾ÏȣȭÆó °¡°Ý ¿¹ÃøÀº ¸Ó½Å·¯´×ÀÇ Á¤È®µµ°¡ ¿ìÀ§¿¡ ÀÖ´Â »ç·Ê°¡ ¸¹´Ù´Â Á¡, °³³äÀûÀ¸·Î Áֽİú ´Þ¸® ¾ÏȣȭÆó´Â ¼ÒÀ¯·Î ÀÎÇÑ ¼öµ¿Àû ¼ÒµæÀÌ ¾ø´Ù´Â Á¡, Åë°èÀûÀ¸·Î ½Ã°¡ÃÑ¾× ´ëºñ ÇÏ·ç °Å·¡·®ÀÇ ºñÀ²À» »ìÆìºÃÀ» ¶§ ¾ÏȣȭÆó°¡ ÁÖ½Ä ´ëºñ ÃÖ¼Ò 3¹èÀÌ»ó ³ô´Ù´Â Á¡ÀÌ µµÃâµÇ¾ú´Ù. À̸¦ ÅëÇØ ¾ÏȣȭÆó °¡°Ý ¿¹Ãø ¿¬±¸¿¡´Â ÁÖ½Ä °¡°Ý ¿¹Ãø°ú ´Ù¸¥ ¹æ¹ý·ÐÀÌ Àû¿ëµÇ¾î¾ß ÇÔÀ» º» ³í¹®¿¡¼­ ÁÖÀåÇÏ¿´´Ù. ¿ì¸®´Â ±âÁ¸¿¡ ÁÖ°¡ µö·¯´× ¿¹Ãø¿¡ »ç¿ëµÇ´ø ¿öÅ© Æ÷¿öµå °ËÁõ¸¦ ÀÀ¿ëÇÑ ¿ª¼ø ¿öÅ© Æ÷¿öµå °ËÁõÀ» Á¦¾ÈÇÏ¿´´Ù. ¿ª¼ø ¿öÅ© Æ÷¿öµå °ËÁõÀº ¿öÅ© Æ÷¿öµå °ËÁõ°ú ´Þ¸® °ËÁõ µ¥ÀÌÅͼÂÀ» Å×½ºÆ® µ¥ÀÌÅͼ¿¡ ½Ã°è¿­»óÀ¸·Î ¹Ù·Î ¾Õ¿¡ ºÎºÐÀ¸·Î °íÁ¤½ÃÄѳõ°í, ÈƷõ¥ÀÌÅ͸¦ ÈÆ·Ã µ¥ÀÌÅͼ¿¡ ½Ã°è¿­»óÀ¸·Î ¹Ù·Î ¾Õ ºÎºÐºÎÅÍ ¼­¼­È÷ ÈÆ·Ã µ¥ÀÌÅͼÂÀÇ Å©±â¸¦ ´Ã·Á°¡¸é¼­ °ËÁõ¿¡ ´ëÇÑ Á¤È®µµ¸¦ ÃøÁ¤ÇÑ´Ù. ÃøÁ¤µÈ ¸ðµç °ËÁõ Á¤È®µµ Áß °¡Àå ³ôÀº Á¤È®µµ¸¦ º¸ÀÌ´Â ÈÆ·Ã µ¥ÀÌÅͼÂÀÇ Å©±â¿¡ ¸ÂÃç¼­ ÈÆ·Ã µ¥ÀÌÅ͸¦ Àý»è½ÃŲ µÚ °ËÁõ µ¥ÀÌÅÍ¿Í ÇÕÃļ­ ½ÇÇè µ¥ÀÌÅÍ¿¡ ´ëÇÑ Á¤È®µµ¸¦ ÃøÁ¤ÇÏ¿´´Ù. ºÐ¼®¸ðµ¨·Î´Â ·ÎÁö½ºÆ½ ȸ±ÍºÐ¼®°ú SVMÀ» »ç¿ëÇßÀ¸¸ç, ¿ì¸®°¡ Á¦¾ÈÇÑ ¿ª¼ø ¿öÅ© Æ÷¿öµå °ËÁõÀÇ ½Å·Ú¼ºÀ» À§Çؼ­ ºÐ¼® ¸ðµ¨ ³»ºÎÀûÀ¸·Îµµ L1, L2, rbf, polyµîÀÇ ´Ù¾çÇÑ ¾Ë°í¸®Áò°ú Á¤±ÔÈ­ ÆĶó¹ÌÅ͸¦ Àû¿ëÇÏ¿´´Ù. ±× °á°ú ¸ðµç ºÐ¼®¸ðµ¨¿¡¼­ ±âÁ¸ ¿¬±¸º¸´Ù Çâ»óµÈ Á¤È®µµ¸¦ º¸ÀÓÀÌ È®ÀεǾúÀ¸¸ç, Æò±ÕÀûÀ¸·Îµµ 1.23%pÀÇ Á¤È®µµ »ó½ÂÀ» º¸¿´´Ù. ¼±Ç࿬±¸¸¦ ÅëÇØ ¾ÏȣȭÆó °¡°Ý ¿¹ÃøÀÇ Á¤È®µµ°¡ ´ëºÎºÐ 50%~60%»çÀÌ¿¡¼­ ¸Ó¹«¸£´Â °É °¨¾ÈÇÒ ¶§ ÀÌ´Â »ó´çÇÑ Á¤È®µµ °³¼±ÀÌ´Ù.
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(English Abstract)
The size of the cryptocurrency market is growing. For example, market capitalization of bitcoin exceeded 500 trillion won. Accordingly, many studies have been conducted to predict the price of cryptocurrency, and most of them have similar methodology of predicting stock prices. However, unlike stock price predictions, machine learning become best model in cryptocurrency price predictions, conceptually cryptocurrency has no passive income from ownership, and statistically, cryptocurrency has at least three times higher liquidity than stocks. Thats why we argue that a methodology different from stock price prediction should be applied to cryptocurrency price prediction studies. We propose Reverse Walk-forward Validation (RWFV), which modifies Walk-forward Validation (WFV). Unlike WFV, RWFV measures accuracy for Validation by pinning the Validation dataset directly in front of the Test dataset in time series, and gradually increasing the size of the Training dataset in front of it in time series. Train data were cut according to the size of the Train dataset with the highest accuracy among all measured Validation accuracy, and then combined with Validation data to measure the accuracy of the Test data. Logistic regression analysis and Support Vector Machine (SVM) were used as the analysis model, and various algorithms and parameters such as L1, L2, rbf, and poly were applied for the reliability of our proposed RWFV. As a result, it was confirmed that all analysis models showed improved accuracy compared to existing studies, and on average, the accuracy increased by 1.23%p. This is a significant improvement in accuracy, given that most of the accuracy of cryptocurrency price prediction remains between 50% and 60% through previous studies.
Å°¿öµå(Keyword) ¸ÞÀÌÅ©¾÷ º¯È¯   Àû´ëÀû »ý¼º ½Å°æ¸Á   °æ»çÁöÇâ È÷½ºÅä±×·¥   ºäƼ°Õ   ¼Õ½Ç ÇÔ¼ö   ¾È¸é ºÐÇÒ   Makeup Transfer   Generative Adversarial Networks   Histogram of Gradient   BeautyGAN   Loss function   Facial segmentation   ¾ÏȣȭÆó   °¡°Ý¿¹Ãø   ¸Ó½Å·¯´×   Cryptocurrency   Price prediction   Machine learning  
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