101 reputation
2
bio website careers.stackoverflow.com/…
location San Francisco, CA
age 44
visits member for 1 year, 10 months
seen Jul 4 at 7:43

i build Systems & Tools for Analysis, Prediction, Visualization, & Simulation.

i also design, code, and deploy complete Machine Learning-based applications (e.g., anti-fraud filter, recommendation engine, monitoring/anomaly detectors), usually designed as modular internal thrift services decoupled from the main app.

Techniques:

  • Machine Learning: in particular, recursive descent parser (CART/C4.5), Multi-layer Perceptron, SVM/SVR, Kernel Machines, kNN/kdtree, Probabilistic Graphical Models (eg, Markov Random Field)

  • Dimension Reduction Techniques: spectral decomposition (PCA & kPCA, kLDA), Kohonen Map (self-organizing map)

  • Social Network Analysis & Visualization: using graph theoretic techniques for e.g., community detection, id of members essential for network health/growth; identify nascent sub-communities; (particular fluency GraphViz, the premiere tool for graph layout/visualization, NetworkX, the primary network analysis library for python, and d3).

  • Analysis & Modeling of Time-Dependent Data

  • Optimization: Combinatorial Optimization and Constraint-Satisfaction Programming

  • Numerical Methods: e.g., matrix decomposition, Monte Carlo techniques, Gaussian quadrature, finite difference methods

  • Data Modeling for "Non-Relational" systems (in particularly Redis and MongoDB) and for relational (ROLAP), multi-dimensional (MOLAP), and hybrid (HOLAP) Data Warehouse systems using conventional relational/SQL servers.


toolchain:

  • python
  • C
  • cython
  • javascript
  • R
  • NumPy + SciPy + Matplotlib
  • pandas
  • redis
  • postgres
  • rethinkDB
  • HDF5 (& pytables, h5py)
  • flask/werkzeug (python web framework)
  • graphviz
  • d3.js (svg template primitives for rendering plots in the browser)
  • storm (distributed processing)
  • saltstack
  • vagrant
  • git (& gitHub)

No recruiters


This user has not answered any questions
This user has not asked any questions
This user has not participated in any tags
Stack Overflow 31,658 rep 880141
Cross Validated 2,188 rep 919
Programmers 463 rep 2511
Meta Stack Exchange 309 rep 16
English Language & Usage 293 rep 27

1 Vote Cast

all time   by type  
1 up 1 question
0 down 0 answer