N A W G ======= NRAO Algorithms Working Group Meeting - PRELIMINARY AGENDA Date: 2005-5-11 (Wednesday) Time: 1300 MDT = 1500 EDT Video Hub: CV-conf (others call in) Rooms: SOC317/CV311/GB241/TUCN505 =============================================================================== The NAWG: I would like to invite you to attend and participate in the fifth NRAO Algorithms Working Group (NAWG) meeting on Wednesday 11 May 2005. The goal of these meetings is to have a general forum to discuss data-processing algorithms related issues of interest to scientists and software folks alike (independent of development platform or package). This is in response to the pressures of planning for the EVLA hard problems like wide-field/wide-band imaging as well as thinking about problems for ALMA and GBT. It is meant to be as observatory-wide as possible and I'm trying to solicit some participants from the various sites. These meetings are meant to be mostly informal discussion with some scheduled presentations ("Main Events") on algorithmic research and/or implementation topics. If you wish to participate and also want to speak on a topic let me know (or just show up either in person or via video/audio)! These meetings are scheduled for the 2nd Wednesday each month (in the NAUG meeting slot in the calendar). =============================================================================== Agenda: Send items for inclusion to smyers 1. Organizational issues o solicitation of topics for future meetings (Steve) 2. Project-related (ALMA, EVLA, GBT, VLBA, &c.) issues o contributed topics 3. ***Short Topics*** - Presentations and Discussion Items ******************************************************************* o Steve Myers - Some thoughts on Monte-Carlo methods for multiscale imaging/deconvolution This was inspired by discussions we had with last week's AOC Colloquium speaker Ben Wandelt. NOTE: If you've not checked it out before, Google Scholar is a great way to find literature on a subject (try "sequential mcmc" or "reversible jump mcmc" for example). http://scholar.google.com/ ******************************************************************* 4. ***Main Event*** - Presentations and Discussion Items ******************************************************************* o Sanjay Bhatnagar - A proposed "roadmap" for EVLA algorithm development. PDF versions of presentations: http://www.aoc.nrao.edu/~smyers/nawg/presentations/ NAWG20050511-Sanjay-EVLAmap.pdf - today's talk NAWG20050511-Sanjay-Aug04.pdf - a note from Aug 2004 ******************************************************************* 5. Future events (please sign up!) o George Moellenbrock - an update on frequency-dependent polcal (main) o Walter Brisken - a proposed self-cal modification (short) 6. Relevant reading: o Paper & Memos: - Beyond the isoplanatic patch in the VLA Low-frequency Sky Survey (W.D. Cotton et al.) Abstract: http://link.aip.org/link/%3FPSISDG/5489/180/1 - Solving for the Antenna Based Pointing Errors (Bhatnagar, Cornwell & Golap) http://www.aoc.nrao.edu/evla/geninfo/memoseries/evlamemo84.pdf - EVLA and SKA Computing Costs for Wide Field Imaging (Cornwell) http://www.aoc.nrao.edu/evla/geninfo/memoseries/evlamemo77.pdf - W Projection: A New Algorithm for Non-Coplanar Baselines (Cornwell, Golap, Bhatnagar) http://www.aoc.nrao.edu/evla/geninfo/memoseries/evlamemo67.pdf - Effects of Atmospheric Emission Fluctuations and Gain Fluctuations on Continuum Total Power Observations with ALMA (Holdaway) http://www.mma.nrao.edu/memos/html-memos/abstracts/abs490.html http://www.mma.nrao.edu/memos/html-memos/alma490/memo490.pdf o Post-processing requirements: - ALMA Offline Data Processing Requirements http://www.alma.nrao.edu/development/computing/docs/joint/0018/ALMAoffline-sw-18.pdf - EVLA Offline Data Processing Requirements http://www.aoc.nrao.edu/~smyers/evla/evla_offline.pdf o GBT: - GBT Software Review Agenda & Presentations http://wiki.gb.nrao.edu/bin/view/Software/ReviewAgenda2004 - GBT Standard Observing Modes http://wiki.gb.nrao.edu/bin/view/Observing/StandardObservingModes 7. Upcoming meetings and deadlines: o 2005 Jun 8 NAWG meeting o 2005 Jun 8-10 OSA Signal Recovery and Synthesis (Charlotte) o 2005 Jun 22-24 SKA Wide-field Imaging Workshop (Dwingeloo) ******************************************************************* o NAWG Website: http://www.aoc.nrao.edu/~smyers/nawg/ *******************************************************************