在LDA model generates different topics everytime i train on the same corpus中,通過設置np.random.seed(0)
,LDA模型將始終以完全相同的方式進行初始化和訓練。確保gensim爲同一數據上的不同運行生成相同的Word2Vec模型
從gensim
開始的Word2Vec型號是否一樣?通過將隨機種子設置爲常量,相同數據集上的不同運行會生成相同的模型嗎?
但奇怪的是,它已經給我相同的載體在不同的情況下。
>>> from nltk.corpus import brown
>>> from gensim.models import Word2Vec
>>> sentences = brown.sents()[:100]
>>> model = Word2Vec(sentences, size=10, window=5, min_count=5, workers=4)
>>> model[word0]
array([ 0.04985042, 0.02882229, -0.03625415, -0.03165979, 0.06049283,
0.01207791, 0.04722737, 0.01984878, -0.03026265, 0.04485954], dtype=float32)
>>> model = Word2Vec(sentences, size=10, window=5, min_count=5, workers=4)
>>> model[word0]
array([ 0.04985042, 0.02882229, -0.03625415, -0.03165979, 0.06049283,
0.01207791, 0.04722737, 0.01984878, -0.03026265, 0.04485954], dtype=float32)
>>> model = Word2Vec(sentences, size=20, window=5, min_count=5, workers=4)
>>> model[word0]
array([ 0.02596745, 0.01475067, -0.01839622, -0.01587902, 0.03079717,
0.00586761, 0.02367715, 0.00930568, -0.01521437, 0.02213679,
0.01043982, -0.00625582, 0.00173071, -0.00235749, 0.01309298,
0.00710233, -0.02270884, -0.01477827, 0.01166443, 0.00283862], dtype=float32)
>>> model = Word2Vec(sentences, size=20, window=5, min_count=5, workers=4)
>>> model[word0]
array([ 0.02596745, 0.01475067, -0.01839622, -0.01587902, 0.03079717,
0.00586761, 0.02367715, 0.00930568, -0.01521437, 0.02213679,
0.01043982, -0.00625582, 0.00173071, -0.00235749, 0.01309298,
0.00710233, -0.02270884, -0.01477827, 0.01166443, 0.00283862], dtype=float32)
>>> exit()
[email protected]:~$ python
Python 2.7.11 (default, Dec 15 2015, 16:46:19)
[GCC 4.8.4] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> from nltk.corpus import brown
>>> from gensim.models import Word2Vec
>>> sentences = brown.sents()[:100]
>>> model = Word2Vec(sentences, size=10, window=5, min_count=5, workers=4)
>>> word0 = sentences[0][0]
>>> model[word0]
array([ 0.04985042, 0.02882229, -0.03625415, -0.03165979, 0.06049283,
0.01207791, 0.04722737, 0.01984878, -0.03026265, 0.04485954], dtype=float32)
>>> model = Word2Vec(sentences, size=20, window=5, min_count=5, workers=4)
>>> model[word0]
array([ 0.02596745, 0.01475067, -0.01839622, -0.01587902, 0.03079717,
0.00586761, 0.02367715, 0.00930568, -0.01521437, 0.02213679,
0.01043982, -0.00625582, 0.00173071, -0.00235749, 0.01309298,
0.00710233, -0.02270884, -0.01477827, 0.01166443, 0.00283862], dtype=float32)
這是真的,那麼默認的隨機種子是固定的嗎?如果是這樣,那麼默認的隨機種子數是多少?還是因爲我正在測試一個小數據集?
如果該隨機種子是固定的,對相同的數據不同的運行返回相同的矢量這是真的,爲規範的代碼或文檔的鏈接,將不勝感激。