C++ implementation for Neural Network-based NLP, such as LSTM machine translation!
This project ONLY requires a template library for linear algebra, Eigen (http://eigen.tuxfamily.org/index.php?title=Main_Page)
Please note that this project started just for fun as my hobby, but sometimes it can be used to develop state-of-the-art models!

The LSTM implemented in this project employs a variant of the major LSTM's gate computation where previous cell states are used to compute input/output gates. See [1, 2] for the simplified version of the LSTM implemented here.

[1] http://arxiv.org/abs/1410.4615
[2] http://nlp.stanford.edu/pubs/tai-socher-manning-acl2015.pdf

BlackOut [3, 4] is an approximation method to softmax classification learning with the large number of classes.

[3] http://arxiv.org/abs/1511.06909
[4] https://github.com/IntelLabs/rnnlm

Layer Normalization [5] is a normalization method for deep neural networks and it can be easily applied to recurrent neural networks, such as LSTMs.

[5] http://arxiv.org/abs/1607.06450

1. select your appropriate compiler (now, Linux or Mac OSX)
   CXX=g++ # for linux
   CXX=clang-omp++ # for Mac OSX Yosemite (suggested by xuanchien@github)

2. modify the line in Makefile to use Eigen
   EIGEN_LOCATION=$$HOME/local/eigen_new #Change this line to use Eigen

3. run the command "make"

4. ./run the command "n3lp", and then the seq2seq model training starts (currently)

Feel free to tell me ([email protected]) if you are using N3LP or have any questions!

• Neural Machine Translation with Source-Side Latent Graph Parsing (Hashimoto and Tsuruoka, arXiv, 2017)
  Paper: https://arxiv.org/abs/1702.02265
  

• A Joint Many-Task Model: Growing a Neural Network for Multiple NLP Tasks (Hashimoto et al., arXiv, 2016)
  Paper: https://arxiv.org/abs/1611.01587
  

• Learning to Parse and Translate Improves Neural Machine Translation (Eriguchi et al., arXiv, 2017)
  Paper: https://arxiv.org/abs/1702.03525
  

• Tree-to-Sequence Attentional Neural Machine Translation (Eriguchi et al., ACL, 2016)
  Paper: http://www.logos.t.u-tokyo.ac.jp/~eriguchi/paper/ACL2016/ACL2016.pdf
  Code: https://github.com/tempra28/tree2seq

• The UT-AKY/KAY systems at WAT 2016 (Eriguchi et al., WAT, 2016; Hashimoto et al., WAT, 2016)
  Paper (UT-AKY): https://aclweb.org/anthology/W/W16/W16-4617.pdf
  Paper (UT-KAY): http://www.logos.t.u-tokyo.ac.jp/~hassy/publications/wat2016/paper_kay.pdf
  

• Kazuma Hashimoto - Mainly developing this project
• Akiko Eriguchi - Developing practical applications

MIT licence