\ucd5c\uadfc \uba87 \ub144 \ub3d9\uc548 \uba38\uc2e0\ub7ec\ub2dd\uacfc \ub525\ub7ec\ub2dd \uae30\uc220\uc774 \ubc1c\uc804\ud558\uba74\uc11c \ub9ce\uc740 \uc0b0\uc5c5\uc5d0\uc11c \ud601\uc2e0\uc801\uc778 \ubcc0\ud654\uac00 \uc77c\uc5b4\ub098\uace0 \uc788\uc2b5\ub2c8\ub2e4. \ud2b9\ud788 \uae08\uc735 \uc2dc\uc7a5\uc5d0\uc11c\ub294 \uc774\ub4e4 \uae30\uc220\uc744 \ud65c\uc6a9\ud558\uc5ec \uc790\ub3d9\ud654\ub41c \ud2b8\ub808\uc774\ub529 \uc2dc\uc2a4\ud15c\uc744 \uac1c\ubc1c\ud558\ub294 \uac83\uc774 \ubcf4\ud3b8\ud654\ub418\uc5c8\uc2b5\ub2c8\ub2e4. \ubcf8 \uae00\uc5d0\uc11c\ub294 \uba38\uc2e0\ub7ec\ub2dd\uacfc \ub525\ub7ec\ub2dd\uc744 \ud65c\uc6a9\ud55c \uc54c\uace0\ub9ac\uc998 \ud2b8\ub808\uc774\ub529\uc758 \uac1c\ub150\uacfc, Q-\ub7ec\ub2dd\uc744 \ud1b5\ud574 \ubc14\ub451\uc5d0\uc11c \ucd5c\uc801\uc758 \uc815\ucc45\uc744 \ucc3e\ub294 \ubc29\ubc95\uc5d0 \ub300\ud574 \uc790\uc138\ud788 \ub2e4\ub8e8\uc5b4 \ubcf4\uaca0\uc2b5\ub2c8\ub2e4.<\/p>\n
\uc54c\uace0\ub9ac\uc998 \ud2b8\ub808\uc774\ub529\uc740 \uc0ac\uc804\uc5d0 \uc815\uc758\ub41c \uc54c\uace0\ub9ac\uc998\uc744 \uae30\ubc18\uc73c\ub85c \ub9e4\ub9e4\ub97c \uc790\ub3d9\uc73c\ub85c \uc218\ud589\ud558\ub294 \ubc29\uc2dd\uc785\ub2c8\ub2e4. \ucd08\ub2f9 \uc218\ucc9c \uac74\uc758 \uc8fc\ubb38\uc744 \ucc98\ub9ac\ud560 \uc218 \uc788\ub294 \ucef4\ud4e8\ud130\uc758 \ub2a5\ub825\uc744 \ud65c\uc6a9\ud558\uc5ec \uc778\uac04\uc758 \uac10\uc815\uc5d0 \uc601\ud5a5\uc744 \ubc1b\uc9c0 \uc54a\uace0 \uc2e0\uc18d\ud558\uac8c \uac70\ub798\ub97c \uc218\ud589\ud560 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc54c\uace0\ub9ac\uc998 \ud2b8\ub808\uc774\ub529\uc758 \uc7a5\uc810\uc740 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4:<\/p>\n
\uba38\uc2e0\ub7ec\ub2dd\uc740 \ucef4\ud4e8\ud130\uac00 \ub370\uc774\ud130\ub97c \ud1b5\ud574 \ud559\uc2b5\ud558\uace0, \uc774\ub97c \ubc14\ud0d5\uc73c\ub85c \uc608\uce21 \ub610\ub294 \uacb0\uc815\uc744 \ub0b4\ub9ac\ub294 \uae30\uc220\uc785\ub2c8\ub2e4. \uba38\uc2e0\ub7ec\ub2dd\uc758 \uc8fc\uc694 \uad6c\uc131 \uc694\uc18c\ub294 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4:<\/p>\n
\ub525\ub7ec\ub2dd\uc740 \uba38\uc2e0\ub7ec\ub2dd\uc758 \ud55c \ubd84\uc57c\ub85c, \uc778\uacf5\uc2e0\uacbd\ub9dd\uc744 \uc0ac\uc6a9\ud558\uc5ec \ub300\uaddc\ubaa8 \ub370\uc774\ud130\uc5d0\uc11c \ud328\ud134\uc744 \ud559\uc2b5\ud558\ub294 \uae30\uc220\uc785\ub2c8\ub2e4. \ub525\ub7ec\ub2dd\uc740 \uc8fc\ub85c \ub2e4\uc74c\uacfc \uac19\uc740 \ubd84\uc57c\uc5d0\uc11c \uc0ac\uc6a9\ub429\ub2c8\ub2e4:<\/p>\n
Q-\ub7ec\ub2dd\uc740 \uac15\ud654 \ud559\uc2b5\uc758 \ud55c \uc885\ub958\ub85c, \uc5d0\uc774\uc804\ud2b8\uac00 \ud658\uacbd\uc5d0\uc11c \ud589\ub3d9\uc744 \uc120\ud0dd\ud558\uace0 \uadf8 \uacb0\uacfc\ub97c \ud1b5\ud574 \ud559\uc2b5\ud558\ub294 \ubc29\ubc95\uc785\ub2c8\ub2e4. Q-\ub7ec\ub2dd\uc758 \ud575\uc2ec\uc740 ‘\uc0c1\ud0dc-\ud589\ub3d9 \uac00\uce58 \ud568\uc218(Q-function)’\ub97c \uc5c5\ub370\uc774\ud2b8\ud558\uc5ec \ucd5c\uc801 \uc815\ucc45\uc744 \ucc3e\ub294 \uac83\uc785\ub2c8\ub2e4. Q-\ub7ec\ub2dd\uc758 \uc8fc\uc694 \ud2b9\uc9d5\uc740 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4:<\/p>\n
\ubc14\ub451\uc740 \ub9e4\uc6b0 \ubcf5\uc7a1\ud55c \uac8c\uc784\uc73c\ub85c, \uc218\ubc31\ub9cc \uac00\uc9c0\uc758 \uac00\ub2a5\ud55c \uc218\uac00 \uc874\uc7ac\ud569\ub2c8\ub2e4. Q-\ub7ec\ub2dd\uc744 \uc0ac\uc6a9\ud558\uc5ec \ubc14\ub451\uc5d0\uc11c \ucd5c\uc801\uc758 \uc815\ucc45\uc744 \ucc3e\ub294 \uacfc\uc815\uc740 \ub2e4\uc74c\uacfc \uac19\uc2b5\ub2c8\ub2e4:<\/p>\n
\ubc14\ub451 \uac8c\uc784\uc758 \ud658\uacbd\uc744 \uc815\uc758\ud558\uae30 \uc704\ud574, \uc0c1\ud0dc\ub97c \ubc14\ub451\ud310\uc758 \ud604\uc7ac \ubc30\uce58\ub85c \ub098\ud0c0\ub0bc \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uac01 \uc0c1\ud0dc\uc5d0\uc11c \uac00\ub2a5\ud55c \ud589\ub3d9\uc740 \ubc14\ub451\ud310\uc758 \ube48\uce78\uc5d0 \ub3cc\uc744 \ub193\ub294 \uac83\uc785\ub2c8\ub2e4.<\/p>\n
\ubcf4\uc0c1\uc740 \uac8c\uc784\uc758 \uacb0\uacfc\uc5d0 \ub530\ub77c \uc124\uc815\ub429\ub2c8\ub2e4. \uc608\ub97c \ub4e4\uc5b4, \uc544\uad70\uc774 \uc2b9\ub9ac\ud588\uc744 \ub54c\ub294 \uc591\uc758 \ubcf4\uc0c1\uc744 \uc8fc\uace0, \ud328\ubc30\ud588\uc744 \ub54c\ub294 \uc74c\uc758 \ubcf4\uc0c1\uc744 \uc904 \uc218 \uc788\uc2b5\ub2c8\ub2e4. \uc774\ub7ec\ud55c \ubcf4\uc0c1\uc744 \ud1b5\ud574 \uc5d0\uc774\uc804\ud2b8\ub294 \uc2b9\ub9ac\uc5d0 \uae30\uc5ec\ud558\ub294 \ud589\ub3d9\uc744 \ud559\uc2b5\ud558\uac8c \ub429\ub2c8\ub2e4.<\/p>\n
Q-\ub7ec\ub2dd \uc54c\uace0\ub9ac\uc998\uc744 \ud1b5\ud574 \uc5d0\uc774\uc804\ud2b8\ub294 \ub2e4\uc74c\uacfc \uac19\uc740 \uc21c\uc11c\ub85c \ud559\uc2b5\ud569\ub2c8\ub2e4:<\/p>\n
Q(s, a) \u2190 Q(s, a) + \u03b1[r + \u03b3 max Q(s', a') - Q(s, a)]<\/code><\/li>\n- \uc0c1\ud0dc\ub97c \uc0c8\ub85c\uc6b4 \uc0c1\ud0dc\ub85c \uc5c5\ub370\uc774\ud2b8\ud558\uace0 1\ubc88\uc73c\ub85c \ub3cc\uc544\uac11\ub2c8\ub2e4.<\/li>\n<\/ol>\n
5. Q-\ub7ec\ub2dd\uc758 \ucf54\ub4dc \uc608\uc81c<\/h2>\n
\uc544\ub798\ub294 Python\uc744 \uc0ac\uc6a9\ud558\uc5ec Q-\ub7ec\ub2dd\uc744 \uad6c\ud604\ud558\ub294 \uac04\ub2e8\ud55c \uc608\uc81c\uc785\ub2c8\ub2e4. \uc774 \ucf54\ub4dc\ub294 \ubc14\ub451\uc758 \uac04\ub2e8\ud55c \ud658\uacbd\uc744 \uc2dc\ubbac\ub808\uc774\uc158\ud558\ub294 \ud615\ud0dc\ub85c \uad6c\uc131\ub418\uc5b4 \uc788\uc2b5\ub2c8\ub2e4.<\/p>\n
\n\nimport numpy as np\n\nclass GobangEnvironment:\n def __init__(self, size):\n self.size = size\n self.state = np.zeros((size, size))\n \n def reset(self):\n self.state = np.zeros((self.size, self.size))\n return self.state\n\n def step(self, action, player):\n x, y = action\n if self.state[x, y] == 0: # \ube48 \uce78\uc5d0\ub9cc \ub193\uc744 \uc218 \uc788\uc74c\n self.state[x, y] = player\n done = self.check_win(player)\n reward = 1 if done else 0\n return self.state, reward, done\n else:\n return self.state, -1, False # \uc798\ubabb\ub41c \uc218\n\n def check_win(self, player):\n # \uc2b9\ub9ac \uc870\uac74 \uccb4\ud06c \ub85c\uc9c1 (\uac04\ub7b5\ud654\ub428)\n return False\n\nclass QLearningAgent:\n def __init__(self, actions, learning_rate=0.1, discount_factor=0.9, exploration_rate=1.0):\n self.q_table = {}\n self.actions = actions\n self.learning_rate = learning_rate\n self.discount_factor = discount_factor\n self.exploration_rate = exploration_rate\n \n def get_action(self, state):\n if np.random.rand() < self.exploration_rate:\n return self.actions[np.random.choice(len(self.actions))]\n else:\n return max(self.q_table.get(state, {}), key=self.q_table.get(state, {}).get, default=np.random.choice(self.actions))\n\n def update_q_value(self, state, action, reward, next_state):\n old_value = self.q_table.get(state, {}).get(action, 0)\n future_rewards = max(self.q_table.get(next_state, {}).values(), default=0)\n new_value = old_value + self.learning_rate * (reward + self.discount_factor * future_rewards - old_value)\n if state not in self.q_table:\n self.q_table[state] = {}\n self.q_table[state][action] = new_value\n\n# \ucd08\uae30\ud654 \ubc0f \ud559\uc2b5 \ucf54\ub4dc\nenv = GobangEnvironment(size=5)\nagent = QLearningAgent(actions=[(x, y) for x in range(5) for y in range(5)])\n\nfor episode in range(1000):\n state = env.reset()\n done = False\n \n while not done:\n action = agent.get_action(state.tobytes())\n next_state, reward, done = env.step(action, player=1)\n agent.update_q_value(state.tobytes(), action, reward, next_state.tobytes())\n state = next_state\n\nprint(\"\ud559\uc2b5 \uc644\ub8cc!\")\n<\/code>\n <\/pre>\n6. \uacb0\ub860<\/h2>\n
\ubcf8 \uae00\uc5d0\uc11c\ub294 \uba38\uc2e0\ub7ec\ub2dd \ubc0f \ub525\ub7ec\ub2dd\uc744 \ud65c\uc6a9\ud55c \uc54c\uace0\ub9ac\uc998 \ud2b8\ub808\uc774\ub529\uc758 \uae30\ubcf8 \uac1c\ub150\uacfc Q-\ub7ec\ub2dd\uc744 \ud1b5\ud574 \ubc14\ub451\uc5d0\uc11c \ucd5c\uc801 \uc815\ucc45\uc744 \ucc3e\ub294 \ubc29\ubc95\uc5d0 \ub300\ud574 \uc124\uba85\ud558\uc600\uc2b5\ub2c8\ub2e4. \uc54c\uace0\ub9ac\uc998 \ud2b8\ub808\uc774\ub529\uc740 \ub370\uc774\ud130\uc758 \uc18d\uc131\uacfc \ud328\ud134\uc744 \uc774\ud574\ud558\uace0, \uc774\ub97c \ubc14\ud0d5\uc73c\ub85c \ud6a8\uc728\uc801\uc778 \ub9e4\ub9e4 \uc804\ub7b5\uc744 \uac1c\ubc1c\ud558\ub294 \ub370 \ud070 \ub3c4\uc6c0\uc744 \uc90d\ub2c8\ub2e4. Q-\ub7ec\ub2dd\uc740 \uc774\ub7ec\ud55c \uacfc\uc815\uc5d0\uc11c \uc5d0\uc774\uc804\ud2b8\uac00 \ud658\uacbd\uc5d0\uc11c\uc758 \uacbd\ud5d8\uc744 \ud1b5\ud574 \uc2a4\uc2a4\ub85c \ubc30\uc6b8 \uc218 \uc788\ub3c4\ub85d \ud574\uc90d\ub2c8\ub2e4. \uc55e\uc73c\ub85c \uae08\uc735 \ubd84\uc57c\uc5d0\uc11c\uc758 \uba38\uc2e0\ub7ec\ub2dd \ubc0f \ub525\ub7ec\ub2dd\uc758 \uc751\uc6a9\uc774 \ub354\uc6b1 \ubc1c\uc804\ud558\uae30\ub97c \uae30\ub300\ud569\ub2c8\ub2e4.<\/p>\n
7. \ucc38\uace0 \uc790\ub8cc<\/h2>\n