UC Berkeley CS182 HW03: Natural Language Processing

Welcome to the third homework of CS182, in this assignment, you will learn about processing and generating text. Specifically, you will build a neural network to generate news headlines, through the training of an LSTM-based language model. Then you will train a Transformer to summarize news articles.

Deliverables

To complete each assignment, you must fill in, the two provided Jupyter notebooks with your solution, this includes editing Python files in this folder.

Through the Notebook, you will produce 2 model files in the .pt format. These are part of your deliverables and should be uploaded with your project, as they will be tested against an unreleased test set for each notebook.

To prepared your ZIP deliverable, read and follow instructions in the "Preparing a Submission" section.

Installation

This assignment requires Python 3. If you plan to complete this assignment with a local machine, and not in the Google Colab, please install Python 3. The training in this assignment may be take a while on cpu. You may want to complete the assignment on Google Colab, in that case make a shortcut to the public folder and copy over the files into a folder named cs182_hw3, or rename the root_folder variable in the notebooks.

Note on Pytorch

If you are running the notebook locally, you should go to the pytorch website and pick the pytorch installation option that aligns with your OS and CUDA version (if available). This homework does not install torch in the requirements as the default option may conflict with your installed CUDA drivers.

Linux / MAC Os

Installing on Linux is very similar to the previous assignments. You can run the following:

virtualenv .env --python=python3

To create a virtual environment. Running:

source .env/bin/activate

will install the python requirements for the assignment. Make sure that you are running a version of python >= 3.5. If you are not (which can be checked with python3 --version) install an updated version of python using the instructions here: https://www.tecmint.com/install-python-in-ubuntu/

Open one of the .ipynb assignment files through Jupyter in a browser and make sure you are using the right Python environment by going into the "Kernel" tab "change kernel" and selecting the correct kernel to run the code in (Python 3).

You now must install the required packages for the assignment. If you are using a GPU-enabled machine:

pip3 install -r requirements_gpu.txt

Otherwise:

pip3 install -r requirements.txt

Windows / Virtual Machine

This assignment is provided pre-setup with a VirtualBox image.

Installation Instructions:

1. Follow the instructions here to install VirtualBox if it is not already installed: https://www.virtualbox.org/manual/ch02.html (Links to an external site.)

2. Download the VirtualBox image. (Be sure that you're logged in to your Berkeley email, otherwise you won't have access)

3. Load the VirtualBox image using the instructions here: https://docs.oracle.com/cd/E26217_01/E26796/html/qs-import-vm.html (Links to an external site.)

4. Log in to the VM. The username and password are both cs182. Pytorch and Tensorflow environments are both provided for you with the requirements already installed. Simply use one of:

conda activate pytorch conda activate tensorflow to acccess the environment.

5. Download the assignment code onto the VM yourself.

FAQ:

• I get an error "AMD-V is disabled in the BIOS" or "Intel-VT is disabled in the BIOS" or similar

Solution: See https://docs.fedoraproject.org/en-US/Fedora/13/html/Virtualization_Guide/sect-Virtualization-Troubleshooting-Enabling_Intel_VT_and_AMD_V_virtualization_hardware_extensions_in_BIOS.html (Links to an external site.)

• The virtual machine won't boot

Solutions:

• Try increasing the number of allocated CPUs: Under Settings→System→Processor
• Try increasing the amount of allocated memory: https://superuser.com/questions/926339/how-to-change-the-ram-allocated-to-an-os-in-virtualboxWorking on a Virtual Machine This assignment is provided pre-setup with a VirtualBox image.

Installation Instructions:

1. Follow the instructions here to install VirtualBox if it is not already installed: https://www.virtualbox.org/manual/ch02.html (Links to an external site.)

2. Download the VirtualBox image here (Links to an external site.). (Be sure that you're logged in to your Berkeley email, otherwise you won't have access)

3. Load the VirtualBox image using the instructions here: https://docs.oracle.com/cd/E26217_01/E26796/html/qs-import-vm.html (Links to an external site.)

4. Log in to the VM. The username and password are both cs182. Pytorch and Tensorflow environments are both provided for you with the requirements already installed. Simply use one of:

conda activate pytorch conda activate tensorflow to acccess the environment.

5. Download the assignment code onto the VM yourself.

FAQ:

• I get an error "AMD-V is disabled in the BIOS" or "Intel-VT is disabled in the BIOS" or similar Solution: See https://docs.fedoraproject.org/en-US/Fedora/13/html/Virtualization_Guide/sect-Virtualization-Troubleshooting-Enabling_Intel_VT_and_AMD_V_virtualization_hardware_extensions_in_BIOS.html (Links to an external site.)

• The virtual machine won't boot

Solutions:

• Try increasing the number of allocated CPUs: Under Settings→System→Processor
• Try increasing the amount of allocated memory: https://superuser.com/questions/926339/how-to-change-the-ram-allocated-to-an-os-in-virtualbox

Colab

Google Colab notebooks can be used with a CPU, or with a K-80 GPU (on this assignment, it seems to give a 5x training speed boost). The homework resources are available for download in this folder: https://drive.google.com/drive/folders/1EeQJ8f2SmU5oZse7IyA9jjgQ9MydtFkL?usp=sharing You must be logged in on your UC Berkeley Google account to see the folder, and you must duplicate it (copy it to your own drive) to have write access over the files. The .ipynb can be opened into the Google Colab by double clicked and selecting "Open with Colaboratory". The cells in the notebook assume you will store your assignment in a folder called "cs182_hw3" in your main folder, you may want to rename your copy of the files as such. You might want to download your trained models, and verify that they work locally before submitting your files.

Downloading the Data

To download the data, run the following command from the assignment root directory:

bash download_data.sh

If you get the error "bash: ./download_data.sh: Permission denied" run chmod +x download_data.sh and try again.

Preparing a Submission

To prepare a submission, run the following command from the assignment root directory:

bash prepare_submission.sh

This will create a "submission.zip" file which can be submitted for the homework. You may get a warning if the files required do not exist - please pay attention to this. Check that your submission contains:

• "1 Language Modeling.ipynb" and "2 Summarization.ipynb"
• "transformer.py", "transformer_attention.py", "language_model.py"
• Your folder for best models for each notebook, best_models
• Your folder for submission logs, submission_logs

If you do not have zip installed on your device, or some other dependency problem arises, you may also create a zip file manually that contains all *.py and *.ipynb files, as well as your submission_logs folder and best_models folder. Make sure every thing is stored in the base directory of the zip.

Questions

Ask your questions on Piazza. If you have questions about the creation of the dataset or the assignment, contact Sean Chen (00schen@berkeley.edu), Philippe Laban (phillab@berkeley.edu) or John Canny (canny@berkeley.edu). If you are an instructor looking for the unreleased test-set and Solution notebooks, you can contact us as well.