A Bayesian Approach to Ranking Private Companies Based on Predictive Indicators

Private equity investors seek to identify potential investment opportunities in growth stage private companies and rank their prospects relative to a cohort of companies such as an industry sector. Growth stage private companies often have investment transaction histories from which industry specific characteristics associated with successful and failed companies may be discerned using machine learning. This research partially addresses one of the primary challenges in pursuing this approach - the sparsity of historical data on private companies is exacerbated in nascent sectors because of the relatively few number of observed exit events. More details of this research.


Using GPUs to Improve Market Risk Management Systems

With Jike Chong and Kurt Keutzer (EECS, UC Berkeley) we investigated the impact of deploying financial market Value-at-Risk simulations on GPUs. We propose a general approach for optimizing Monte-Carlo simulations on the GPU and demonstrate a 169x speedup relative to a baseline GPU implementation of a market Value-at-Risk simulation based on 4000 market risk factors. More details of this research.


Enabling Larger Scale Water Resource Simulations with Linear Solvers

With Zhaojun Bai (CS, UC Davis), we investigated the effect of scaling PGMRES solvers applied to large datasets from water resource management tools developed by the California State Department of Water Resources. We found that row equilibration is important for sharpening upper bound estimates of the forward error. Sharp control of the forward error enables the residual stopping tolerance to be more efficiently choosen, avoiding excessive iterations and leading to a factor of 7x speedup against their baseline implementation. More details of this project.

Detecting Mobility Patterns in Mobile Phone Data from the Ivory Coast

By leveraging cloud-based open-source analytics infrastructure to (1) merge the D4D datasets with Geographic Information System (GIS) data and (2) apply data mining algorithms, this research project presents a number of techniques for detecting mobility patterns of anonymized Orange mobile phone customers in the Ivory Coast. More details of this research.