Coursera, Deep Learning 5, Sequence Models, week2, Natural Language Processing & Word Embeddings

【Coursera, Deep Learning 5, Sequence Models, week2, Natural Language Processing & Word Embeddings】的更多相关文章

Coursera, Deep Learning 5, Sequence Models, week2, Natural Language Processing & Word Embeddings

Word embeding 给word 加feature,用来区分word 之间的不同,或者识别word之间的相似性. 用于学习 Embeding matrix E 的数据集非常大,比如 1B - 100B 的word corpos. 所以即使你输入的是没见过的 durian cutivator 也知道和 orange farmer 很相近. 这是transfter learning 的一个case. 因为t-SNE 做了non-liner 的转化,所以在原来的300维空间的平行的向量在转化过后…

Coursera, Deep Learning 5, Sequence Models, week3, Sequence models & Attention mechanism

Sequence to Sequence models basic sequence-to-sequence model: basic image-to-sequence or called image captioning model: but there are some differences between how you write a model like this to generate a sequence, compared to how you were synthesizi…

课程五(Sequence Models)，第二周（Natural Language Processing & Word Embeddings） —— 1.Programming assignments：Operations on word vectors - Debiasing

Operations on word vectors Welcome to your first assignment of this week! Because word embeddings are very computionally expensive to train, most ML practitioners will load a pre-trained set of embeddings. After this assignment you will be able to: L…

Coursera Deep Learning笔记序列模型（二）NLP & Word Embeddings(自然语言处理与词嵌入)

参考 1. Word Representation 之前介绍用词汇表表示单词,使用one-hot 向量表示词,缺点:它使每个词孤立起来,使得算法对相关词的泛化能力不强. 从上图可以看出相似的单词分布距离较近,从而也证明了Word Embeddings能有效表征单词的关键特征. 2. 词嵌入(word embedding) Transfer learning and word embedding: 从海量词汇库中学习word embeddings(即所有单词的特征向量),或者从网上下载预训练好的w…

Coursera, Deep Learning 5, Sequence Models, week1 Recurrent Neural Networks

有哪些sequence model Notation: RNN - Recurrent Neural Network 传统NN 在解决sequence input 时有什么问题? RNN就没有上面的问题. 注意这里还提到了BRNN 双向RNN的概念. 激活函数 g1 经常用的是tanh, 也有用relu的但是不常用 Backpropagation through time Difference types of RNNs Language model and sequence generatio…

课程五(Sequence Models)，第二周（Natural Language Processing & Word Embeddings） —— 2.Programming assignments：Emojify

Emojify! Welcome to the second assignment of Week 2. You are going to use word vector representations to build an Emojifier. Have you ever wanted to make your text messages more expressive? Your emojifier app will help you do that. So rather than wri…

课程五(Sequence Models)，第二周（Natural Language Processing & Word Embeddings） —— 0.Practice questions：Natural Language Processing & Word Embeddings

[解释] The dimension of word vectors is usually smaller than the size of the vocabulary. Most common sizes for word vectors ranges between 50 and 400. [解释] 过用t-SNE算法来将单词可视化.t-SNE算法所做的就是把这些n维的数据用一种非线性的方式映射到2维平面上,可以得知t-SNE中这种映射很复杂而且很非线性. [解释] Yes, word v…

Predicting effects of noncoding variants with deep learning–based sequence model | 基于深度学习的序列模型预测非编码区变异的影响

Predicting effects of noncoding variants with deep learning–based sequence model PDF Interpreting noncoding variants- 非常好的学习资料这篇文章的第一个亮点就是直接从序列开始分析,第二就是使用深度学习获得了很好的预测效果. This is, to our knowledge, the first approach for prioritization of functional…

吴恩达《深度学习》-课后测验-第五门课序列模型(Sequence Models)-Week 2: Natural Language Processing and Word Embeddings (第二周测验：自然语言处理与词嵌入)

Week 2 Quiz: Natural Language Processing and Word Embeddings (第二周测验:自然语言处理与词嵌入) 1.Suppose you learn a word embedding for a vocabulary of 10000 words. Then the embedding vectors should be 10000 dimensional, so as to capture the full range of variation…

[C5W2] Sequence Models - Natural Language Processing and Word Embeddings

第二周自然语言处理与词嵌入(Natural Language Processing and Word Embeddings) 词汇表征(Word Representation) 上周我们学习了 RNN.GRU 单元和 LSTM 单元.本周你会看到我们如何把这些知识用到 NLP 上,用于自然语言处理,深度学习已经给这一领域带来了革命性的变革.其中一个很关键的概念就是词嵌入(word embeddings),这是语言表示的一种方式,可以让算法自动的理解一些类似的词,比如男人对女人,比如国王对王后,…