1. http://trec.nist.gov/. http://trec.nist.gov/.
2. https://developer.nvidia.com/about-cuda. https://developer.nvidia.com/about-cuda.
3. http://docs.nvidia.com/cuda/cuda-math-api/group__CUDA_MATH__INTRINSIC__IN T.html#group_CUDA__MATH_INTRINSIC_INT_1g43c9c7d2b9ebf202ff1ef5769989be46. http://docs.nvidia.com/cuda/cuda-math-api/group__CUDA_MATH__INTRINSIC__IN T.html#group_CUDA__MATH_INTRINSIC_INT_1g43c9c7d2b9ebf202ff1ef5769989be46.
4. https://nvlabs.github.io/moderngpu/intro.html#libraries. https://nvlabs.github.io/moderngpu/intro.html#libraries.
5. http://www.lemurproject.org/clueweb12.php. http://www.lemurproject.org/clueweb12.php.