1 / 29

Advancements in Algebraic Statistics for Statistical Computing: Current Research Areas

Discover the latest research areas in algebraic statistics, from Gröbner bases to sufficient statistics in statistical computing. Explore designs, probability models, toric varieties, and more in this insightful collection.

lobrien
Download Presentation

Advancements in Algebraic Statistics for Statistical Computing: Current Research Areas

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Advances in Algebraic Statistics General Applications and Statistical Computing Sections 8 June 2005 Henry Wynn

  2. Contents 1. Gröbner bases, varieties, ideals 2. Designs and supports 3. Probability models 5. Toric varieties and saturation 6. Graphical models 7. Moments and cumulants 8. Sufficient statistics and Maximum likelihood 9. Markov bases and simulation 10. Live research areas

  3. Use Q[a,b,c,r,s,t,x,y,z]; Points:= [[1,0,0,1,0,0,1,0,0],[1,0,0,0,1,0,0,1,0],[1,0,0,0,0,1,0,0,1], [0,1,0,1,0,0,0,0,1],[0,1,0,0,1,0,1,0,0],[0,1,0,0,0,1,0,1,0], [0,0,1,1,0,0,0,1,0],[0,0,1,0,1,0,0,0,1],[0,0,1,0,0,1,1,0,0]]; Ideal(x + y + z - 1, r + s + t - 1, a + b + c - 1, z^2 - z, yz, cz - sz, bz + sz + tz - z, y^2 - y, ty - sz - 1/3b + 1/3c + 1/3s - 1/3t - 1/3y + 1/3z, sy + sz + tz + 2/3b + 1/3c - 2/3s - 1/3t - 1/3y - 2/3z, cy - tz - 1/3b - 2/3c + 1/3s + 2/3t - 1/3y + 1/3z, by - sz - 1/3b + 1/3c + 1/3s - 1/3t - 1/3y + 1/3z, t^2 - t, st, ct + sz + tz + 1/3b - 1/3c - 1/3s - 2/3t + 1/3y - 1/3z, bt - sz - 1/3b + 1/3c + 1/3s - 1/3t - 1/3y + 1/3z, s^2 - s, cs - sz, bs - tz - 2/3b - 1/3c - 1/3s + 1/3t + 1/3y + 2/3z, c^2 - c, bc, b^2 - b) [x, r, a, z^2, yz, cz, bz, y^2, ty, sy, cy, by, t^2, st, ct, bt, s^2, cs, bs, c^2, bc, b^2] [1, b, c, s, t, y, z, sz, tz]

  4. Ideal(x^2y + 1/3y^3 - 4/3y, x^3 + 3xy^2 - 4x, xy^3 - xy, y^5 - 5y^3 + 4y) [1, x, y, x^2, xy, y^2, xy^2, y^3, y^4, x^2y, x^3, xy^3, y^5]

  5. gg := [-p3^8*p5+p2^3*p4^6, -p2^3*p5+p1*p4^3, p1*p3^8-p2^6*p4^3, v*p5^4*p3^17-p2^2*p4^14,-p4^8+p2*v*p5^3*p3^9, -p4^2+p2^4*v*p5^2*p3, v*p2^7*p4^4*p5-p3^7, -p1*p3^7+v*p2^10*p5^2*p4, p2^13*v*p5^3-p1^2*p4^2*p3^7, v*p1*p2*p3*p4*p5-1]

  6. Live research areas • More on design: corner cut, inverse problems • Complex probability models: large area • Boundary exponential models, MLE etc • Kernel v Markov v Gröbner bases • Secant varieties and hidden Markov • Design/Probability link: structural zeros etc

More Related