{"id":25295,"date":"2024-10-26T09:53:46","date_gmt":"2024-10-26T09:53:46","guid":{"rendered":"http:\/\/atmokpo.com\/w\/?p=25295"},"modified":"2024-11-26T08:02:14","modified_gmt":"2024-11-26T08:02:14","slug":"%eb%94%a5-%eb%9f%ac%eb%8b%9d%ec%9d%84-%ec%9d%b4%ec%9a%a9%ed%95%9c-%ec%9e%90%ec%97%b0%ec%96%b4-%ec%b2%98%eb%a6%ac-%eb%84%a4%ea%b1%b0%ed%8b%b0%eb%b8%8c-%ec%83%98%ed%94%8c%eb%a7%81%ec%9d%84-%ec%9d%b4","status":"publish","type":"post","link":"https:\/\/atmokpo.com\/w\/25295\/","title":{"rendered":"\ub525 \ub7ec\ub2dd\uc744 \uc774\uc6a9\ud55c \uc790\uc5f0\uc5b4 \ucc98\ub9ac, \ub124\uac70\ud2f0\ube0c \uc0d8\ud50c\ub9c1\uc744 \uc774\uc6a9\ud55c Word2Vec \uad6c\ud604(Skip-Gram with Negative Sampling, SGNS)"},"content":{"rendered":"<p>\uc790\uc5f0\uc5b4 \ucc98\ub9ac(Natural Language Processing, NLP)\ub294 \ucef4\ud4e8\ud130\uac00 \uc778\uac04\uc758 \uc5b8\uc5b4\ub97c \uc774\ud574\ud558\uace0 \ucc98\ub9ac\ud558\ub294 \uae30\uc220\uc744 \ub9d0\ud569\ub2c8\ub2e4. \ucd5c\uadfc \uba87 \ub144\uac04 \ub525 \ub7ec\ub2dd \uae30\uc220\uc758 \ubc1c\uc804\uc73c\ub85c \uc790\uc5f0\uc5b4 \ucc98\ub9ac\uc758 \uc131\ub2a5\uc774 \ub208\uc5d0 \ub744\uac8c \ud5a5\uc0c1\ub418\uc5c8\uc2b5\ub2c8\ub2e4. \ubcf8 \uae00\uc5d0\uc11c\ub294 \ub525 \ub7ec\ub2dd\uc744 \ud65c\uc6a9\ud55c \uc790\uc5f0\uc5b4 \ucc98\ub9ac\uc758 \ud55c \uac00\uc9c0 \uae30\ubc95\uc778 Word2Vec\uc758 Skip-Gram \ubaa8\ub378\uacfc \uadf8 \uad6c\ud604 \ubc29\ubc95\uc778 \ub124\uac70\ud2f0\ube0c \uc0d8\ud50c\ub9c1(Negative Sampling)\uc744 \uc0c1\uc138\ud788 \uc0b4\ud3b4\ubcf4\uaca0\uc2b5\ub2c8\ub2e4.<\/p>\n<h2>1. \uc790\uc5f0\uc5b4 \ucc98\ub9ac\uc758 \uae30\ucd08<\/h2>\n<p>\uc790\uc5f0\uc5b4 \ucc98\ub9ac\ub294 \uc5b8\uc5b4\uc758 \uc5ec\ub7ec \uac00\uc9c0 \ud2b9\uc131\uc744 \uc774\ud574\ud558\uace0 \ub2e8\uc5b4, \ubb38\uc7a5, \ubb38\ub9e5 \ub4f1\uc744 \ucef4\ud4e8\ud130\uac00 \uc778\uc2dd\ud560 \uc218 \uc788\ub294 \ud615\ud0dc\ub85c \ubcc0\ud658\ud558\ub294 \uacfc\uc815\uc785\ub2c8\ub2e4. \uc774\ub97c \uc704\ud574 \ub2e4\uc591\ud55c \uae30\uc220\uc774 \uc0ac\uc6a9\ub418\uba70, \uadf8\uc911 \ub2e8\uc5b4\uc758 \uc758\ubbf8\ub97c \ubca1\ud130 \ud615\ud0dc\ub85c \ubcc0\ud658\ud558\ub294 \uae30\uc220\uc774 \uc911\uc694\ud569\ub2c8\ub2e4.<\/p>\n<h2>2. Word2Vec\uc758 \uac1c\ub150<\/h2>\n<p>Word2Vec\uc740 \ub2e8\uc5b4\ub97c \ubca1\ud130\ub85c \ubcc0\ud658\ud558\ub294 \uc54c\uace0\ub9ac\uc998\uc73c\ub85c, \uc758\ubbf8\uc801\uc73c\ub85c \uc720\uc0ac\ud55c \ub2e8\uc5b4\ub97c \ube44\uc2b7\ud55c \ubca1\ud130\ub85c \ud45c\ud604\ud569\ub2c8\ub2e4. \uc774\ub97c \ud1b5\ud574 \uae30\uacc4\uac00 \uc5b8\uc5b4\uc758 \uc758\ubbf8\ub97c \ub354 \uc798 \uc774\ud574\ud560 \uc218 \uc788\uac8c \ub429\ub2c8\ub2e4. Word2Vec\uc5d0\ub294 \ud06c\uac8c \ub450 \uac00\uc9c0 \ubaa8\ub378\uc774 \uc788\uc2b5\ub2c8\ub2e4: Continuous Bag of Words(CBOW)\uacfc Skip-Gram \ubaa8\ub378\uc785\ub2c8\ub2e4.<\/p>\n<h3>2.1 Continuous Bag of Words (CBOW)<\/h3>\n<p>CBOW \ubaa8\ub378\uc740 \uc8fc\uc5b4\uc9c4 \uc8fc\ubcc0 \ub2e8\uc5b4\ub97c \ud1b5\ud574 \uc911\uc2ec \ub2e8\uc5b4\ub97c \uc608\uce21\ud558\ub294 \ubc29\uc2dd\uc785\ub2c8\ub2e4. \uc608\ub97c \ub4e4\uc5b4, \ubb38\uc7a5\uc774 &#8220;The cat sits on the mat&#8221; \uc77c \ub54c, &#8220;sits&#8221;\ub97c \uc608\uce21\ud558\uae30 \uc704\ud574 &#8220;The&#8221;, &#8220;cat&#8221;, &#8220;on&#8221;, &#8220;the&#8221;, &#8220;mat&#8221;\uc774 \uc8fc\ubcc0 \ub2e8\uc5b4\ub85c \uc0ac\uc6a9\ub429\ub2c8\ub2e4.<\/p>\n<h3>2.2 Skip-Gram \ubaa8\ub378<\/h3>\n<p>Skip-Gram \ubaa8\ub378\uc740 CBOW\uc758 \ubc18\ub300\ub418\ub294 \uac1c\ub150\uc73c\ub85c, \uc911\uc2ec \ub2e8\uc5b4\ub97c \uc8fc\uc5b4\uc9c4 \uc0c1\ud669\uc5d0\uc11c \uc8fc\ubcc0 \ub2e8\uc5b4\ub97c \uc608\uce21\ud558\ub294 \ubc29\uc2dd\uc785\ub2c8\ub2e4. \uc774 \ubaa8\ub378\uc740 \ud2b9\ud788 \ud76c\uadc0 \ub2e8\uc5b4\ub4e4\uc5d0 \ub300\ud55c \ud559\uc2b5\uc774 \ub354 \ud6a8\uacfc\uc801\uc774\uba70, \uc758\ubbf8\uc801\uc73c\ub85c \uad00\ub828\uc131\uc774 \ub192\uc740 \ub2e8\uc5b4\ub4e4\uc744 \uc798 \ud3ec\ucc29\ud569\ub2c8\ub2e4.<\/p>\n<h2>3. \ub124\uac70\ud2f0\ube0c \uc0d8\ud50c\ub9c1(Negative Sampling)<\/h2>\n<p>Word2Vec\uc758 Skip-Gram \ubaa8\ub378\uc740 \ub9ce\uc740 \uc218\uc758 \ub2e8\uc5b4\ub97c \ud559\uc2b5\ud574\uc57c \ud558\ubbc0\ub85c \uacc4\uc0b0 \ubcf5\uc7a1\ub3c4\uac00 \uc0c1\ub2f9\ud788 \ud07d\ub2c8\ub2e4. \uc774 \ubcf5\uc7a1\ub3c4\ub97c \uc904\uc774\uae30 \uc704\ud574 \ub124\uac70\ud2f0\ube0c \uc0d8\ud50c\ub9c1\uc744 \ub3c4\uc785\ud569\ub2c8\ub2e4. \ub124\uac70\ud2f0\ube0c \uc0d8\ud50c\ub9c1\uc740 \uc804\uccb4 \ub2e8\uc5b4\uc758 \ubd84\ud3ec\uc5d0\uc11c \uc77c\ubd80 \ub2e8\uc5b4(\ub124\uac70\ud2f0\ube0c \uc0d8\ud50c)\ub97c \ubb34\uc791\uc704\ub85c \uc120\ud0dd\ud558\uc5ec, \uc774\ub97c \ud1b5\ud574 \uc190\uc2e4 \ud568\uc218\ub97c \uac00\uc18d\ud654\ud558\ub294 \ubc29\uc2dd\uc785\ub2c8\ub2e4.<\/p>\n<h3>3.1 \ub124\uac70\ud2f0\ube0c \uc0d8\ud50c\ub9c1\uc758 \uc6d0\ub9ac<\/h3>\n<p>\ub124\uac70\ud2f0\ube0c \uc0d8\ud50c\ub9c1\uc758 \ud575\uc2ec \uc544\uc774\ub514\uc5b4\ub294 \uae0d\uc815\uc801\uc778 \uc0d8\ud50c(\uc77c\uce58\ud558\ub294 \ub2e8\uc5b4)\uacfc \ubd80\uc815\uc801\uc778 \uc0d8\ud50c(\uc77c\uce58\ud558\uc9c0 \uc54a\ub294 \ub2e8\uc5b4)\uc744 \ud63c\ud569\ud558\uc5ec \ubaa8\ub378\uc744 \ud559\uc2b5\ud558\ub294 \uac83\uc785\ub2c8\ub2e4. \uc774\ub807\uac8c \ud568\uc73c\ub85c\uc368 \ube44\uc2b7\ud55c \ud655\ub960 \ubd84\ud3ec\ub97c \uac00\uc9c4 \ub2e8\uc5b4\ub4e4 \uac04\uc758 \uad00\uacc4\ub97c \ub354 \uc798 \uc774\ud574\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<h2>4. Skip-Gram with Negative Sampling (SGNS) \uad6c\ud604\ud558\uae30<\/h2>\n<p>\ubcf8 \uc139\uc158\uc5d0\uc11c\ub294 Skip-Gram \ubaa8\ub378\uacfc \ub124\uac70\ud2f0\ube0c \uc0d8\ud50c\ub9c1\uc744 \uacb0\ud569\ud55c SGNS\uc758 \uc804\uccb4\uc801\uc778 \uad6c\uc870\uc640 \uad6c\ud604 \ubc29\ubc95\uc5d0 \ub300\ud574 \uc124\uba85\ud569\ub2c8\ub2e4.<\/p>\n<h3>4.1 \ub370\uc774\ud130 \uc900\ube44<\/h3>\n<p>SGNS \ubaa8\ub378\uc744 \ud559\uc2b5\ud558\uae30 \uc704\ud574\uc11c\ub294 \uba3c\uc800 \uc790\uc5f0\uc5b4 \ub370\uc774\ud130\uc14b\uc774 \ud544\uc694\ud569\ub2c8\ub2e4. \uc77c\ubc18\uc801\uc73c\ub85c \uc601\ubb38 \ud14d\uc2a4\ud2b8\ub97c \uc0ac\uc6a9\ud558\uc9c0\ub9cc, \uc6d0\ud558\ub294 \uc5b8\uc5b4\ub098 \ub370\uc774\ud130\ub97c \uc0ac\uc6a9\ud560 \uc218\ub3c4 \uc788\uc2b5\ub2c8\ub2e4. \ub370\uc774\ud130\ub97c \uc815\uc81c\ud558\uace0, \uac01 \ub2e8\uc5b4\uc758 \uc778\ub371\uc2a4\ub97c \ub9e4\ud551\ud558\uc5ec \ubaa8\ub378 \ud559\uc2b5\uc5d0 \uc0ac\uc6a9\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<h3>4.2 \ubaa8\ub378 \uad6c\uc870 \uc124\uacc4<\/h3>\n<p>SGNS \ubaa8\ub378\uc758 \uad6c\uc870\ub294 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4:<\/p>\n<ul>\n<li>\uc785\ub825\uce35: \ub2e8\uc5b4\uc758 \uc6d0-\ud56b \uc778\ucf54\ub529 \ubca1\ud130<\/li>\n<li>\uc740\ub2c9\uce35: \ub2e8\uc5b4 \uc784\ubca0\ub529\uc744 \uc704\ud55c \ud30c\ub77c\ubbf8\ud130 \ud589\ub82c<\/li>\n<li>\ucd9c\ub825\uce35: \uc8fc\ubcc0 \ub2e8\uc5b4\ub97c \uc608\uce21\ud558\uae30 \uc704\ud55c \uc18c\ud504\ud2b8\ub9e5\uc2a4 \ud568\uc218<\/li>\n<\/ul>\n<h3>4.3 \uc190\uc2e4 \ud568\uc218<\/h3>\n<p>SGNS\uc758 \uc190\uc2e4 \ud568\uc218\ub294 \uc8fc\uc5b4\uc9c4 \uc911\uc2ec \ub2e8\uc5b4\uc5d0\uc11c \uc8fc\ubcc0 \ub2e8\uc5b4\ub97c \uc608\uce21\ud558\uae30 \uc704\ud574 \ub85c\uadf8 \uc190\uc2e4\uc744 \uc0ac\uc6a9\ud569\ub2c8\ub2e4. \uc774\ub97c \ud1b5\ud574 \ucd5c\uc801\uc758 \ud30c\ub77c\ubbf8\ud130\ub97c \ucc3e\uc744 \uc218 \uc788\uac8c \ub429\ub2c8\ub2e4.<\/p>\n<h3>4.4 \ud30c\ub77c\ubbf8\ud130 \uc5c5\ub370\uc774\ud2b8<\/h3>\n<p>SGNS\uc758 \ud559\uc2b5 \uacfc\uc815\uc5d0\uc11c \uacbd\ub7c9\ud654\ub41c \ub124\uac70\ud2f0\ube0c \uc0d8\ud50c\ub9c1 \ubc29\uc2dd\uc73c\ub85c \ud30c\ub77c\ubbf8\ud130\ub97c \uc5c5\ub370\uc774\ud2b8\ud569\ub2c8\ub2e4. \uc774\ub807\uac8c \ud558\uba74 \ubaa8\ub378\uc758 \ud559\uc2b5 \uc18d\ub3c4\uc640 \uc131\ub2a5\uc744 \ub3d9\uc2dc\uc5d0 \ud5a5\uc0c1\uc2dc\ud0ac \uc218 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n<h3>4.5 \ucd5c\uc885 \uad6c\ud604<\/h3>\n<p>\uc544\ub798\ub294 \ud30c\uc774\uc36c\uc73c\ub85c \uc791\uc131\ud55c SGNS\uc758 \uac04\ub2e8\ud55c \uad6c\ud604 \uc608\uc2dc\uc785\ub2c8\ub2e4:<\/p>\n<pre><code>\nimport numpy as np\n\nclass SGNS:\n    def __init__(self, vocab_size, embedding_dim, negative_samples):\n        self.vocab_size = vocab_size\n        self.embedding_dim = embedding_dim\n        self.negative_samples = negative_samples\n        self.W1 = np.random.rand(vocab_size, embedding_dim)  # Input word embedding\n        self.W2 = np.random.rand(embedding_dim, vocab_size)  # Output word embedding\n\n    def train(self, center_word_idx, context_word_idx):\n        positive = np.dot(self.W1[center_word_idx], self.W2[:, context_word_idx])\n        negative_samples = np.random.choice(range(self.vocab_size), self.negative_samples, replace=False)\n\n        # Positive and negative sampling updates\n        # Apply gradient descent and update W1 and W2\n\n# Use the SGNS model here, loading data and training it accordingly.\n<\/code><\/pre>\n<h2>5. SGNS\uc758 \uacb0\uacfc \ubc0f \ud65c\uc6a9<\/h2>\n<p>SGNS \ubaa8\ub378\uc744 \ud1b5\ud574 \uc0dd\uc131\ub41c \ub2e8\uc5b4 \ubca1\ud130\ub294 \ub2e4\uc591\ud55c \uc790\uc5f0\uc5b4 \ucc98\ub9ac \uacfc\uc81c\uc5d0 \ud65c\uc6a9\ub420 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc608\ub97c \ub4e4\uc5b4, \ubb38\uc11c \ubd84\ub958, \uac10\uc815 \ubd84\uc11d, \uae30\uacc4 \ubc88\uc5ed \ub4f1\uc5d0\uc11c \ub6f0\uc5b4\ub09c \uc131\uacfc\ub97c \ubcf4\uc785\ub2c8\ub2e4.<\/p>\n<p>\ub2e8\uc5b4\uc758 \uc758\ubbf8\ub97c \uc5f0\uc18d\uc801\uc778 \ubca1\ud130 \uacf5\uac04\uc5d0 \uc798 \ud45c\ud604\ud568\uc73c\ub85c\uc368 \uae30\uacc4\uac00 \uc778\uac04\uc758 \uc5b8\uc5b4\ub97c \ubcf4\ub2e4 \uc27d\uac8c \uc774\ud574\ud558\uace0 \ucc98\ub9ac\ud560 \uc218 \uc788\uac8c \ub429\ub2c8\ub2e4.<\/p>\n<h2>6. \ub9c8\uce58\uba70<\/h2>\n<p>\ubcf8 \uae00\uc5d0\uc11c\ub294 \ub525 \ub7ec\ub2dd\uc744 \ud65c\uc6a9\ud55c \uc790\uc5f0\uc5b4 \ucc98\ub9ac \uae30\ubc95 \uc911 Word2Vec\uc758 Skip-Gram \ubaa8\ub378\uacfc \ub124\uac70\ud2f0\ube0c \uc0d8\ud50c\ub9c1\uc5d0 \ub300\ud574 \uc0c1\uc138\ud558\uac8c \uc124\uba85\ud588\uc2b5\ub2c8\ub2e4. \uc774\ub97c \ud1b5\ud574 SGNS\uc758 \uad6c\ud604 \ubc29\ubc95\uacfc \ub370\uc774\ud130 \ucc98\ub9ac \ubc29\uc2dd\uc5d0 \ub300\ud55c \ud1b5\ucc30\ub825\uc744 \uc81c\uacf5\ud560 \uc218 \uc788\uc5c8\uc2b5\ub2c8\ub2e4. \uc790\uc5f0\uc5b4 \ucc98\ub9ac \ubd84\uc57c\ub294 \uacc4\uc18d\ud574\uc11c \ubc1c\uc804\ud558\uace0 \uc788\uc73c\uba70, \uc774\ub7ec\ud55c \uae30\uc220\uc744 \ud65c\uc6a9\ud558\uc5ec \ub354 \ub098\uc740 \uc5b8\uc5b4 \ubaa8\ub378\uc744 \ub9cc\ub4e4\uc5b4 \uac08 \uc218 \uc788\uae30\ub97c \ubc14\ub78d\ub2c8\ub2e4.<\/p>\n<h2>7. \ucc38\uace0 \ubb38\ud5cc<\/h2>\n<ul>\n<li>Mikolov, T., Sutskever, I., Chen, K., Corrado, G. S., &amp; Dean, J. (2013). Distributed representations of words and phrases and their compositionality. <i>Advances in Neural Information Processing Systems<\/i>, 26.<\/li>\n<li>Goldberg, Y., &amp; Levy, O. (2014). word2vec Explained: Intuition and Methodology. <i>arXiv preprint arXiv:1402.3722<\/i>.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\uc790\uc5f0\uc5b4 \ucc98\ub9ac(Natural Language Processing, NLP)\ub294 \ucef4\ud4e8\ud130\uac00 \uc778\uac04\uc758 \uc5b8\uc5b4\ub97c \uc774\ud574\ud558\uace0 \ucc98\ub9ac\ud558\ub294 \uae30\uc220\uc744 \ub9d0\ud569\ub2c8\ub2e4. \ucd5c\uadfc \uba87 \ub144\uac04 \ub525 \ub7ec\ub2dd \uae30\uc220\uc758 \ubc1c\uc804\uc73c\ub85c \uc790\uc5f0\uc5b4 \ucc98\ub9ac\uc758 \uc131\ub2a5\uc774 \ub208\uc5d0 \ub744\uac8c \ud5a5\uc0c1\ub418\uc5c8\uc2b5\ub2c8\ub2e4. \ubcf8 \uae00\uc5d0\uc11c\ub294 \ub525 \ub7ec\ub2dd\uc744 \ud65c\uc6a9\ud55c \uc790\uc5f0\uc5b4 \ucc98\ub9ac\uc758 \ud55c \uac00\uc9c0 \uae30\ubc95\uc778 Word2Vec\uc758 Skip-Gram \ubaa8\ub378\uacfc \uadf8 \uad6c\ud604 \ubc29\ubc95\uc778 \ub124\uac70\ud2f0\ube0c \uc0d8\ud50c\ub9c1(Negative Sampling)\uc744 \uc0c1\uc138\ud788 \uc0b4\ud3b4\ubcf4\uaca0\uc2b5\ub2c8\ub2e4. 1. 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