BLAST

Requirements

• Ubuntu OS
• Python 3.9.13 (tested)
• PyTorch 1.13.0 (tested)
• C++ 17

Compile

mkdir build
cd build
cmake ..
make -j 20

Preprocess dataset

mkdir data/

First, download the trajectory dataset into data/{dataset_name}.

./build/dataset_preprocess_exec

This will convert the original trajectories.csv file of longitude and latitude coordinates into xy coordinates in a 2D plane. And then sample the dataset.

Training GSelector

Generate the training dataset

 ./build/ml_dataset_generation_exec

Train the model

cd python_scripts/
python dataset_preparation.py
python train.py

Bulk load an R-tree and execute query

  cd ../
 ./build/main_exec