Raichel, Benjamin

 

Benjamin Raichel is an Assistant Professor of Computer Science. His research interests include:

  • Algorithms and Theory
  • Discrete and Computational Geometry
  • Randomized and Approximation Algorithms

In 2018 the National Science Foundation awarded its CAREER Award for Dr. Raichel's project on geometric-based data anaysis.

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Recent Submissions

  • Viewing the Rings of a Tree: Minimum Distortion Embeddings into Trees 

    Nayyeri, A.; Raichel, Benjamin (Association for Computing Machinery, 2019-01)
    We describe a (1 + ε) approximation algorithm for finding the minimum distortion embedding of an npoint metric space, (X, d_X), into a tree with vertex set X. The running time of our algorithm is n²•(∆/ε)^{(O(δopt/ε))2λ+1} ...

  • Sparse Approximate Conic Hulls 

    Van Buskirk, Gregory; Raichel, Benjamin; Ruozzi, Nicholas
    We consider the problem of computing a restricted nonnegative matrix factorization (NMF) of an m × n matrix X. Specifically, we seek a factorization X ≈ BC, where the k columns of B are a subset of those from X and C ∈ ...

  • Geometric Packing Under Nonuniform Constraints 

    Ene, Alina; Har-Peled, Sariel; Raichel, Benjamin A. (SIAM Publications, 2018-10-22)
    We study the problem of discrete geometric packing. Here, given weighted regions (say, in the plane) and points (with capacities), one has to pick a maximum weight subset of the regions such that no point is covered more ...