UC Berkeley Events Calendar
http://events.berkeley.edu/index.php/calendar/sn/pubaff.html
Campus-wide event listings from the University of California, BerkeleyPlanetarium Shows, thru Feb 1, 2015
http://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=81314&date=2014-11-23
Gaze and wonder at the stars and beyond with three different Planetarium shows at the Lawrence Hall of Science. "Imagine the Sky Tonight," "Searching for Other Earths," and "What's in Your Zodiac Sign?" will all play every weekend and holiday. Photo credit: NASA Kepler.http://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=81314&date=2014-11-23Ingenuity Lab: Automata, thru Nov 29
http://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=81659&date=2014-11-23
Design and build a mechanical sculpture out of a shoebox. Choose a motion, make the cams, levers, and linkages to turn your shoebox into a cardboard automata that you get to take home.http://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=81659&date=2014-11-23Examining how intracellular bacterial pathogens target host pathways of intercellular communication for cell-to-cell spread, Nov 24
http://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=81604&date=2014-11-24
http://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=81604&date=2014-11-24Computational Algebraic Geometry Seminar, Nov 24
http://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=84182&date=2014-11-24
The trace of the product of $n$ square matrices of size $q$ is a polynomial in the entries of the matrices that is of interest in complexity theory because of its completeness for some complexity classes. We study geometric properties of this polynomial and of the hypersurface that it defines: we will focus on the symmetric (border-)rank of the polynomial and on the singular locus and the dual variety of the hypersurface.http://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=84182&date=2014-11-24Introduction to bCourses: Build your bCourses Site! Walk in with your syllabus: Walk out with your site created!, Nov 24
http://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=84141&date=2014-11-24
This introductory level workshop is designed for new-to-bCourses instructors who will be teaching this Spring.<br />
<br />
We will begin with your syllabus, adding it and your grading framework to your own bCourses site, using the productive and friendly tools of bCourses. We will also import your resources from bSpace to bCourses and explore communication tools.http://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=84141&date=2014-11-24Computational Algebraic Geometry Seminar, Nov 24
http://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=84181&date=2014-11-24
In many areas such as data analysis, statistical models and computer vision people want compare the difference between two linear subspaces. It is a well-known result that one can use distances on the Grassmannians to compare linear subspaces of the same dimension and these distances can be computed by the Singular Value Decomposition. In this talk, I will discuss how to compare the difference between linear subspaces of different dimensions from both the geometry and the optimization theory. This is a joint work with Lek-Heng Lim.http://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=84181&date=2014-11-24How to Write a Research/Grant Proposal, Nov 24
http://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=81890&date=2014-11-24
If you need to write a grant propopsal, this workshop is for you! In 90 minutes, you will get a headstart on defining your research question, developing a project plan, presenting your qualifications, and creating a realistic budget.<br />
<br />
The workshop is open to all UC-Berkeley students (undergraduate, graduate, and visiting scholars) regardless of academic discipline. It will be especially useful for upper-division undergraduates preparing to write a senior honors thesis, as well as those applying for graduate school or considering a career in fundraising for nonprofits.<br />
<br />
We strongly recommend that you come to the workshop with a specific topic in mind. Your idea can be broad--we'll refine it during the workshop--but you'll get the most out of the workshop will be most useful if you can apply it to a specific area of research interest.)http://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=81890&date=2014-11-24Combinatorics Student Seminar, Nov 24
http://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=84290&date=2014-11-24
Algebraic matroids characterize the combinatorial structure of coordinate projections of an algebraic variety. By decorating the matroid with circuit polynomials and base degrees, we capture even more information. I will present joint work with Franz Király and Louis Theran regarding the matroid of the determinantal variety, and matroids with similar symmetry groups.http://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=84290&date=2014-11-24TAC Seminar, Nov 24
http://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=80144&date=2014-11-24
http://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=80144&date=2014-11-24Symplectic and Quantum Geometry, Nov 24
http://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=84240&date=2014-11-24
We discuss a theorem of Tian regarding asymptotically isometric Kodaira embeddings of projective varieties, in the context of geometric quantization in the semi-classical limit. We outline Tian's approach using $L^2$ estimates for the $\bar {\partial }$-operator and a vanishing theorem to construct peak sections of powers of a positive line bundle. We also discuss an alternative approach (Zelditch) using equivariant functions on the associated $S^1$-bundle to reformulate the problem in terms of integral kernels, and use stationary phase approximation to get a complete asymptotic expansion of the metric error. Finally, we'll touch briefly on the generalization to non-integrable almost complex structures.http://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=84240&date=2014-11-24Seminar 231, Public Finance: “Regional state capacity and the optimal degree of fiscal decentralization”, Nov 24
http://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=78576&date=2014-11-24
with A. Bellofatto (Carnegie Mellon University)http://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=78576&date=2014-11-24Seminar 211, BEHL Economic History Seminar: Religion, Division of Labour and Conflict: Evidence over Six Centuries, Nov 24
http://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=79744&date=2014-11-24
http://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=79744&date=2014-11-24Berkeley Sociology Colloquium Series, thru May 4, 2015
http://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=81045&date=2014-11-24
Weekly Colloquia. Please visit the event webpages at http://sociology.berkeley.edu/ for current listings.http://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=81045&date=2014-11-24Probabilistic Operator Algebra Seminar, Nov 24
http://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=83572&date=2014-11-24
In their work on Szego-type limit theorems, Richard Carey and Joel Pincus introduced the notion of joint torsion, which can be seen as a homological analogue of Larry Brown's determinant invariant in K-theory. In this talk I will report on recent work in this area, in particular the relationship between these invariants, transformation rules, and applications.http://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=83572&date=2014-11-243-Manifold seminar, Nov 24
http://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=84282&date=2014-11-24
I'll discuss a paper of Lackenby, showing that one may untie an unknot with polynomially many Reidemeister moves. An unknotting algorithm due to Dynnikov using grid diagrams is analyzed, and the complexity of a normal disk bounding the knot is shown to decrease by a definite factor under an appropriate sequence of moves.http://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=84282&date=2014-11-24Statistical and Computational Guarantees for the EM algorithm, Nov 24
http://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=84178&date=2014-11-24
The expectation-maximization (EM) algorithm is an iterative method for finding maximum- likelihood estimates of parameters in statistical models with unobserved latent variables. Along with Markov Chain Monte Carlo (MCMC) it is one of the two computational workhorses that provided much impetus for statistics in entering its modern “computer-intensive” phase. Much is known about the EM algorithm, its convergence properties, and its susceptibility to local optima. However, despite the existence of multiple fixed points, on a variety of statistical problems the EM algorithm has been observed empirically to perform well given either a reasonable initialization or with several random starts.<br />
<br />
In this talk, I will develop tools to theoretically understand and characterize this behavior of the EM algorithm and give conditions under which the EM algorithm converges to near globally optimal parameter estimates. I will conclude with a discussion of current and future directions. This is joint work with Martin J. Wainwright and Bin Yu.<br />
<br />
Bio:<br />
Sivaraman is a postdoctoral researcher in Department of Statistics, working with Martin J. Wainwright and Bin Yu. Prior to this he was received his Ph.D. from the School of Computer Science at Carnegie Mellon. He is broadly interested in problems that lie at the interface between computation and statistics. Some particular areas that have provided motivation for his past and current research include the applications of statistical methods in computational biology, clustering, topological data analysis and non-parametric statistics.http://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=84178&date=2014-11-24Control Theory Seminar: Toward standards for dynamics in future electric energy systems: The basis for plug-and-play industry paradigm, Nov 24
http://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=84287&date=2014-11-24
In this talk we propose that by revisiting the fundamental physics of interconnected electric power systems one can begin to think systematically about the role of both competitive and cooperative control, and their pros and cons for these rapidly evolving systems. We introduce somewhat new, dynamic systems view, of physical operation in several qualitatively different power grids (bulk power regulated; bulk power with markets; hybrid mix of emerging grids; micro-girds for developing countries; and micro-grids for developed countries). The physical operation dictates how to define internal states of given (groups of) physical components and the interaction variables between different (groups of) physical components. Based on understanding physical principles, we propose a new state space model of an interconnected grid comprising (groups of) different physical components. This model has a transparent physical interpretation, and, it is, therefore used as the basis for explicit performance specifications in terms of interactions of components. Performance specifications become standards for plug-and-play dynamic interactions of components (behavior) over several time horizons within an otherwise complex dynamical grid, which, when followed, ensure system-wide performance. We emphasize that the proposed approach is a framework for thinking about the necessary specifications in future electric energy systems, which enables both choice of technology at the (groups of) component levels and, minimal interaction specifications to align these with the performance of the over overall system. It is not a specific method. This framework could possibly overcome the roadblock of integrating distributed local grid technologies with the bulk power grid without running into major coordinating complexity. Specific proposed approaches to distributed control for smart grids are interpreted.<br />
<br />
BIO:<br />
Dr. Marija Ilić holds a joint appointment at Carnegie Mellon as Professor of Electrical & Computer Engineering and Engineering & Public Policy, where she has been a tenured faculty member since October 2002. Dr. Ilić received her M.Sc. and D.Sc. degrees in Systems Science and Mathematics fromWashington University in St. Louis and earned her MEE and Dip. Ing. at the University of Belgrade. She is an IEEE Fellow and an IEEE distinguished lecturer, as well as a recipient of the First Presidential Young Investigator Award for Power Systems. In addition to her academic work, Dr. Ilić is a consultant for the electric power industry and the founder of New Electricity Transmission Software Solution, Inc. (NETSS, Inc.). From September 1999 until March 2001, Dr. Ilić was a Program Director for Control, Networks and Computational Intelligence at the National Science Foundation. Prior to her arrival at Carnegie Mellon, Dr. Ilić held the positions of Visiting Associate Professor and Senior Research Scientist at Massachusetts Institute of Technology. From 1986 to 1989, she was a tenured faculty member at the University of Illinois at Urbana-Champaign, where she taught since 1984. She has also taught at Cornell and Drexel. She has worked as a visiting researcher at General Electric and as a principal research engineer in Belgrade.http://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=84287&date=2014-11-24Another View of EGFR/HER2 Signaling in Normal and Disease States, Nov 24
http://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=77837&date=2014-11-24
Coffee & Refreshments served on lower level Stanley Hall @3:50pm-4:10pmhttp://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=77837&date=2014-11-24CANCELED: Middle ear hearing devices and photonic contact hearing, Nov 24
http://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=81134&date=2014-11-24
The broad frequency ranges unique to mammalian hearing provide them with important means for localizing sound, which enables them to understand speech in different environments. However, hearing aids only provide amplification to about 5 kHz. I will describe an extended-bandwidth non-surgical hearing aid design in which light is used to wirelessly transmit both the power and signal to a tympanic contact actuator placed in direct contact with the eardrum. Results from an FDA-approved clinical trial indicate that the unprecedented 0.2 – 10 kHz frequency range of the device enables hearing-impaired subjects to perceive acoustic cues that greatly enhance sound quality and the ability to understand speech in some noisy environments. Then I will describe how this technology was developed and the challenges encountered in bringing the concept to patients.http://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=81134&date=2014-11-24Debt Command Workshop, Nov 24
http://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=81905&date=2014-11-24
http://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=81905&date=2014-11-24Green Chemistry and Sustainable Design Seminar, Nov 24
http://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=83053&date=2014-11-24
"Assessing International Green Energy Development Projects in Thailand and Kosovo"http://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=83053&date=2014-11-24Seminar 271, Development Seminar:"Leveraging Social Networks for Technology Adoption", Nov 24
http://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=80283&date=2014-11-24
Host: Edward Miguelhttp://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=80283&date=2014-11-24bCourses advanced topic workshop: Gradebook, Grades, and Assignments, Nov 25
http://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=84217&date=2014-11-25
*Prerequisite: Completion of Introductory bCourses workshop or previous experience teaching in bCourses.<br />
<br />
This one-hour workshop (plus bonus half-hour for those who want to stay for consultations) is designed for active bCourses instructors and GSIS, and others interested in a deeper dive into the bCourses gradebook.http://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=84217&date=2014-11-25Andrew Streitwieser Lecture, Nov 25
http://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=78517&date=2014-11-25
Coffee and Refreshments served at the "Coffee Lab" B38 Hildebrand - available @ 10:50amhttp://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=78517&date=2014-11-25Fossil Coffee, Nov 25
http://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=82669&date=2014-11-25
High-resolution chronostratigraphy of the terrestrial Cretaceous-Paleogene transition and recovery interval in the Hell Creek region, Montanahttp://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=82669&date=2014-11-25Cancer and aging: Rival demons? , Nov 25
http://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=83629&date=2014-11-25
This seminar is partially sponsored by NIHhttp://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=83629&date=2014-11-25BSAC Technology Seminar - Surface Tension Is Fair Game in Micro-Engineering: Let's Play!, Nov 25
http://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=84188&date=2014-11-25
Unlike in regular scale, where tubing is needed to manipulate liquids, sub-millimeter scale liquids can be handled as discrete objects using the liquid-air interface as virtual walls. This unusual option is a result of surface tension dominating other mechanical forces in microscale. Early devices implementing this method include satellite-free inkjet printing; droplet-based micro RF switch; and complete miniature fuel-cell system with no moving part. These early successes led to two platform technologies based on surface tension. The first is the mechanism of electrowetting-on-dielectric (EWOD), which can manipulate droplets simply with voltages. As the number of manipulative functions grew (e.g., creating and moving droplets, mixing and separating droplets, separating particles in a droplet), the field of EWOD-based digital microfluidics has been established. Two application examples will be presented: on-chip sample preparation for MALDI-MS and on-chip synthesis of radiotracers for PET scan. The second platform technology is superhydrophobic (SHPo) surfaces on which water flows with less friction. We have obtained an unequivocal drag reduction as much as 75% in turbulent-boundary-layer flows, which represent water vehicles traveling in open sea. Furthermore, we have developed surfaces that remain SHPo indefinitely under water, removing both of the main bottlenecks. This is an example of surface-tension engineering, which is based on microscale physics, being applied to large-scale systems.http://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=84188&date=2014-11-25Seminar 237, Macro: "Monetary Exchange in Over-the-Counter Markets", Nov 25
http://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=80965&date=2014-11-25
http://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=80965&date=2014-11-25Student Probability/PDE Seminar, Nov 25
http://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=84281&date=2014-11-25
Rough Path Theory of Terry Lyons provides a way to construct pathwise solutions to Stochastic Differential Equations. Regularity Structure Theory of Martin Hairer offers a multi-dimensional generalization of Rough Path Theory and can be used to build Markovian solutions to Stochastic PDEs. In these lectures I will give an overview of these theories and their applications to SPDEs.http://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=84281&date=2014-11-25Student Harmonic Analysis and PDE Seminar (HADES), Nov 25
http://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=84353&date=2014-11-25
The k-plane transform R is known to satisfy some Lp to Lq dilation invariant inequalities. In the endpoint case, the presence of a huge group of symetries G allows us to give a complete characterization of the extremizers. Starting from here, we will try to prove that the k-plane transform is stable in the following sense: if Rf is large then f must be close to an extremizer in Lp. The first step is a non-quantitative version of this result, namely that extremizing sequences are precompact modulo the group of symmetries. The large size of G makes the situation much more complicated (and interesting). The second step is a local quantitative version. Here the large size of G is really helpful and allows us to give explicit formula.http://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=84353&date=2014-11-25Commutative Algebra and Algebraic Geometry, Nov 25
http://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=83819&date=2014-11-25
The Hurwitz form of a variety is the discriminant that characterizes linear spaces of complementary dimension which intersect the variety in fewer than degree many points. We study computational aspects of the Hurwitz form, relate this to the dual variety and Chow form, and show why reduced degenerations are special on the Hurwitz polytope.http://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=83819&date=2014-11-25Commutative Algebra and Algebraic Geometry, Nov 25
http://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=84279&date=2014-11-25
The Hurwitz form of a variety is the discriminant that characterizes linear spaces of complementary dimension which intersect the variety in fewer than degree many points. We study computational aspects of the Hurwitz form, relate this to the dual variety and Chow form, and show why reduced degenerations are special on the Hurwitz polytope.http://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=84279&date=2014-11-25Taking Snapshots of Photosynthetic Water Oxidation using Femtosecond Pulses from an X-Ray Free Electron Laser, Nov 25
http://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=83277&date=2014-11-25
Coffee and Refreshments served at the "Coffee Lab" B38 Hildebrand - available @ 3:50pmhttp://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=83277&date=2014-11-25The Ethical Choice of a Scientist: The Example of Robert Oppenheimer, Nov 25
http://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=84320&date=2014-11-25
Starting with the example of Oppenheimer, we will focus on the the moral and political dimensions of our work as scientists. The diversity of the choices made by the panelists in their relation with defense work will illustrate both the complexity of the issues involved and the need to make deliberate choices. Panelists: Profs Joonhong Ahn (Nuclear Engineering), Cathryn Carson (History), Steven Glazer (Civil and Mechanical Engineering), Raymond Jeanloz (Earth and Planetary Science), Randy Katz (Electrical Engineering and Computer Sciences), Holger Müller (Physics). Moderator: Bernard Sadoulet (Physics)http://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=84320&date=2014-11-25Commutative Algebra and Algebraic Geometry, Nov 25
http://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=83820&date=2014-11-25
We say that an ideal I in a polynomial ring S has linear powers if all the powers of I have a linear free resolution. We show that the ideal of maximal minors of a sufficiently general matrix with linear entries has linear powers. The required genericity is expressed in terms of the heights of the ideals of lower order minors. In particular we prove that all ideals defining rational normal scroll have linear powers.<br />
<br />
This is joint work with Aldo Conca and Matteo Varbarao (J. Reine Angew. Math., to appear)http://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=83820&date=2014-11-25Commutative Algebra and Algebraic Geometry, Nov 25
http://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=84280&date=2014-11-25
We say that an ideal I in a polynomial ring S has linear powers if all the powers of I have a linear free resolution. We show that the ideal of maximal minors of a sufficiently general matrix with linear entries has linear powers. The required genericity is expressed in terms of the heights of the ideals of lower order minors. In particular we prove that all ideals defining rational normal scroll have linear powers. (This is joint work with Aldo Conca and Matteo Varbarao, to appear in J. Reine Angew. Math.)http://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=84280&date=2014-11-25Introduction to bCourses: Build your bCourses Site! Walk in with your syllabus: Walk out with your site created!, Nov 26
http://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=84218&date=2014-11-26
This introductory level workshop is designed for new-to-bCourses instructors who will be teaching this Spring.<br />
<br />
We will begin with your syllabus, adding it and your grading framework to your own bCourses site, using the productive and friendly tools of bCourses. We will also import your resources from bSpace to bCourses and explore communication tools.http://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=84218&date=2014-11-26MZV Seminar: No Seminar- Happy Thanksgiving!, Nov 26
http://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=80873&date=2014-11-26
http://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=80873&date=2014-11-26Matrix Computations and Scientific Computing Seminar, Nov 26
http://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=84269&date=2014-11-26
In their seminal work in 2013, Marcus, Spielman and Srivastava showed the existence of the generalized weaver partition (GWP). Their work immediately implies that the Kadison-Singer conjecture is true, but leaves the question of computing the GWP unanswered. In this talk, we discuss a close connection between GWP and fundamental problems in numerical linear algebra, and present an efficient algorithm for computing the GWP. We show the correctness of our algorithm under mild conditions and present numerical experimental results that support our claims.http://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=84269&date=2014-11-26Neyman Seminar: Statistical aspects of population demographic inference from genomic variation data, Nov 26
http://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=83637&date=2014-11-26
Genome sequences of present-day individuals are amazingly accurate records of the demographic events that have shaped the history of modern human populations, such as the migration of humans out of Africa, the peopling of different parts of the world, and the explosive population growth in the last few hundred generations of human civilization. Such understanding of population demography, besides being of historical interest, has wide-ranging applications from medical genetics to forensic science.<br />
<br />
Since its development in the early 1980's, coalescent theory has emerged as a powerful tool for modeling the evolution of genomic sequences drawn from a population, and much work has been done on using the coalescent to estimate changes in the effective size of a population from genomic variation data. I will describe some of these approaches and focus attention on one of the most widely-used summary statistics of genomic variation data --- the sample frequency spectrum (SFS). The SFS of a sample of sequences counts the number of segregating sites in a sample as a function of the mutant allele frequency, and provides a highly efficient dimensional reduction of a large number of sequences. While the expected SFS of a random sample depends strongly on the underlying population demography, it has been shown that very different population size functions can generate the same expected SFS for arbitrarily large sample sizes, a non-identifiability result that, in principle, poses a thorny challenge to statistical inference. However, these counterexamples are biologically quite unrealistic. We reexamine this problem and show that, under biologically reasonable assumptions, the expected SFS of a sufficiently large sample of sequences uniquely identifies the population demography. We also derive explicit bounds for the sample sizes that are sufficient for identifiability for model families that are commonly used in practice, such as piecewise-constant and piecewise-exponential population size functions. Our results are proved using a generalization of Descartes' rule of signs for polynomials to the Laplace transform.http://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=83637&date=2014-11-26Quantum Geometry Seminar, Nov 26
http://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=84295&date=2014-11-26
I will report on a recent work of F. D'Andrea, F. Lizzi and P. Martinetti (arXiv:1406.2422). They illustrate how to get the Euclidean metric on pure states from the canonical commutation relations by using Connes distance formula. Then they study different examples showing how distances are modified by deforming the canonical commutation relations.http://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=84295&date=2014-11-26No ERG Colloquium Today, Nov 26
http://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=78729&date=2014-11-26
Energy and Resources Group Fall 2014 Colloquium Series (ER295)http://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=78729&date=2014-11-26ESPM Seminar: None due to holiday, Nov 27
http://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=80376&date=2014-11-27
http://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=80376&date=2014-11-27Seminar 251, No Meeting, Nov 27
http://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=79058&date=2014-11-27
http://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=79058&date=2014-11-27MSE Weekly Seminar, thru Dec 4
http://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=82867&date=2014-11-27
Department of Materials Science and Engineering is hosting a weekly seminar on related subjects. Light refreshments are provided.http://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=82867&date=2014-11-27Labor Lunch: No Meeting, Nov 28
http://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=79074&date=2014-11-28
http://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=79074&date=2014-11-28LSGA Forum, thru Dec 12
http://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=82470&date=2014-11-28
http://events.berkeley.edu/index.php/calendar/sn/pubaff.html?event_ID=82470&date=2014-11-28