Sam Burden

vim

Mon, 20 May 2013 22:34:14 GMT

There are many reasons vim is my preferred text editor.

Remap CAPS-LOCK to ESC

gui

Although I'm happy using vim in a terminal when SSH'd, on OSX I prefer the graphical MacVim for native copy + paste and simply a different set of windows from my terminal.

rc

My configuration files are available: vim; vimrc; gvimrc.

You'll want the following from MacPorts:

sudo port install py-ctags

Find and replace in selection

After using Shift + v or v to make a selection, press : to get :'<,'>, add s/old/new/gc to get :'<,'>s/old/new/gc

Search only in LaTeX math mode

:/\$/|;,/\$/s/old/new/gc

Blog

Sun, 19 May 2013 17:19:00 GMT

All blog entries

Punctuated-Equilibrium

Sun, 19 May 2013 07:03:00 GMT

When, upon my graduation and departure from UW EE, my undergraduate research advisor and mentor gave me Stephen Jay Gould's memoir about (one of) his biggest scientific achievement(s), I was perplexed. I felt that Eric and I bonded over many shared intellectual interests, but the historical development of evolutionary paleobiology was not one of them. Where was the obscure mathematics textbook on Morse theory? Or the seemingly far more apt pop sci bio-inspiration book by Vogel?

Needless to say, I didn't finish the book that summer. I was overwhelmed by Gould's florid academese, but mostly I didn't get it. It wasn't until 5 years later, having read Kuhn's classic essay and struggled most of the way through a PhD, that I returned to the book and realized what a gem it really is.

For the uninitiated

Eldredge and Gould presented a now-seminal paper in an annual paleobiology meeting touting the ubiquitous stasis of species in the paleontological record as strong evidence against the view (dating back to Darwin himself) that evolution is a continual gradual process. Controverting this paradigm of phyletic gradualism, Eldredge and Gould argued that species persist in equilibrium for long spans of geological time, undergoing (relatively) rapid periods of punctuational change. Contrary to the prevailing view that the apparent stasis of species was merely symptomatic of an incomplete paleontological record, they asserted that “stasis is data”, and that the burden of proof for phyletic gradualism now rested on its proponents.

A case study in paradigm shift

The dissemination and adoption of punctuated equilibrium, as documented in Gould's 2007 book, is a classic example of Kuhn's theory of punctuational change characterizing scientific progress (paradigm shift being Kuhn's term). In addition to four solid chapters spent motivating, articulating, and defending the scientific theory, Gould devotes a final chapter and appendix to broader interpretations and implications for punctuational modes of change, as well as an anecdotal and subjective account of the less-than-scientific resistance and critique rendered by his colleagues in the 30+ years that elapsed between the original conference paper and this monograph.

Lessons for revolutionaries

Although normal science can be rewarding, I posit that the majority of scientists (a label I surreptitiously ascribe to engineering researchers as well as the biologists and physicists I collaborate with) are in this game for the revolutions. Specifically: I would venture that most of us dream of someday (soon) finding ourselves at the tempestuous vortex of serendipity and insight resulting in an impulsive, lurching shift of conceptual inertia that defines a scientific epoch. Black swans are rare, but they are not chimeras; one should prepare to readily identify the errant bird.

I derive the following lessons from Gould's example:

question assumptions, particularly the most obvious
read broadly (across disciplines), and ask experts naïve questions
do not be afraid to be tenacious, and stubborn, and (ultimately) annoying
accept all scientific criticism; reject ad hominem attacks

References

Darwin, Charles (1859). On the Origin of Species by Means of Natural Selections: Or the Preservation of Favoured Races in the Struggle for Life. Murray.

Milnor, J.W. (1963). Morse theory. Princeton University Press.

Eldredge, Niles and Gould, Stephen Jay. Punctuated equilibria: an alternative to phyletic gradualism. Models in Paleobiology, 1972.

Gould, Stephen Jay and Eldredge, Niles. Punctuated Equilibrium at the Third Stage. Systematic Zoology 35:143—148, (1986).

Gould, Stephen Jay, Eldredge, Niles and others. Punctuated equilibrium comes of age. Nature 366:223—227, (1993).

Vogel, Steven and Davis, Kathryn K (2000). Cats' paws and catapults: Mechanical worlds of nature and people. WW Norton & Company.

Gould, Stephen Jay (2007). Punctuated equilibrium. Harvard University Press.

Taleb, Nassim Nicholas (2007). The black swan: The impact of the highly improbable. Random House.

gould.bib

Sun, 19 May 2013 06:59:00 GMT

@book{Darwin1859,
	Author = {Darwin, Charles},
	Publisher = {Murray},
	Title = {On the Origin of Species by Means of Natural Selections: Or the Preservation of Favoured Races in the Struggle for Life},
	Year = {1859}}

@book{Milnor1963,
	Author = {Milnor, J.W.},
	Publisher = {Princeton University Press},
	Title = {{Morse theory}},
	Year = {1963}}

@inproceedings{EldredgeGould1972,
	Author = {Eldredge, Niles and Gould, Stephen Jay},
	Editor = {Schopf, T. J. M.},
	Pages = {82--115},
	Title = {Punctuated equilibria: an alternative to phyletic gradualism},
	Booktitle = {Models in Paleobiology},
	Year = {1972}}

@article{GouldEldredge1986,
	Author = {Gould, Stephen Jay and Eldredge, Niles},
	Journal = {Systematic Zoology},
	Number = {1},
	Pages = {143--148},
	Title = {Punctuated Equilibrium at the Third Stage},
	Volume = {35},
	Year = {1986}}

@article{GouldEldredge1993,
	Author = {Gould, Stephen Jay and Eldredge, Niles and others},
	Journal = {Nature},
	Number = {6452},
	Pages = {223--227},
	Title = {Punctuated equilibrium comes of age},
	Volume = {366},
	Year = {1993}}

@book{VogelDavis2000,
	Author = {Vogel, Steven and Davis, Kathryn K},
	Publisher = {WW Norton & Company},
	Title = {Cats' paws and catapults: Mechanical worlds of nature and people},
	Year = {2000}}

@book{Gould2007,
	Author = {Gould, Stephen Jay},
	Publisher = {Harvard University Press},
	Title = {Punctuated equilibrium},
	Year = {2007}}

@book{Taleb2007,
	Author = {Taleb, Nassim Nicholas},
	Publisher = {Random House},
	Title = {The black swan: The impact of the highly improbable},
	Year = {2007}}

Migration-to-tiddlyWiki

Sun, 19 May 2013 04:59:00 GMT

I discovered tiddlyWiki earlier this week, and quickly became so enamored that I decided to rewrite my web page using the tool — if you're reading this, you have witnessed the results.

I can whole-heartedly recommend the tool for building an academic web page (with support for blogging and RSS) and maintaining an electronic lab notebook; for instance, check out BibTeXPlugin and MathJaxPlugin to see how easy it is to integrate citations and equations. CheckboxPlugin makes it perfect for to-do lists.

Robot-Ethics

Sun, 19 May 2013 04:59:00 GMT

This article (recommended to me by Prof. Gonzalez) advocates imbuing robots with ethical principles.

I found the article timely, less because of the potential danger of autonomous car crashes than the controversy surrounding our increased deployment of UAVs in countries we have not declared war on.

Rosetta-Stone

Sun, 19 May 2013 04:59:00 GMT

I have been using the Rosetta Stone software for the past few months to start learning Spanish. My goals include expanding my outreach efforts to ESL students, comfortably traveling in Latin America, and reading ~~the Quixote~~ ~~2666~~ any Spanish book written above a fifth grade reading level.

Having only studied ASL in high school to satisfy the “foreign language” requirement for college admissions, I am starting from no experience learning to speak another language. Though many debate the efficacy / price ratio of the software, I have found it to be a useful tool to begin learning vocabulary, pronunciation, and listening skills (the latter two of which are notoriously difficult to learn without a human instructor).

Since I found very little information online describing how to use Rosetta Stone (RS) in an effective and comprehensive self-study program, I will post my techniques here.

Pace

RS divides its course into multiple Levels, each comprised of four Units, which are themselves comprised of four main Lessons and multiple reinforcement lessons spaced out (logarithmically?) between the main lessons. Devoting 30 — 60 minutes per day, I was easily able to get through one Unit per week, and hence Levels 1 — 3 (bundled together for ~$400) in approximately 3 months.

Grammar

I am in full agreement with this YouTube video — it is very difficult to learn grammar from RS. After the first few Levels you will start to intuit when a verb must be conjugated, but I am still unable to consistently recall the correct conjugation. I think an effective strategy is to buy the workbook from a first-year college-level Spanish course and do the exercises in parallel with RS.

Listening

RS eases you into every new word & phrase gradually, so the lessons can quickly become tedious and repetitive. To make the Listening exercises more challenging, I close my eyes, visualize what is being said, and try to repeat it aloud before looking at the screen. This practice also seems to help me directly connect the Spanish language to my cognitive states, i.e. I do not need to first translate Spanish to English to understand what is being said.

Structure-of-Scientific-Revolutions

Sun, 19 May 2013 04:59:00 GMT

I just discovered Kuhn's classic essay. Though many of the ideas have been assimilated into academic culture — the phrase “paradigm shift” and science as a social phenomenon — I found the piece informative and highly relevant. It helped clarify and contextualize some frustrations I have as a student and researcher, and provoked more fundamental questions about the purpose and goal of academic research in engineering. This post will evolve as I discuss the ideas with colleagues.

Narrative fallacy in science curriculum

Kuhn observes that the main pedagogical apparatus of a typical R1 university — textbooks — efficiently indoctrinate students with the tools and perspectives of the dominant scientific paradigm while suppressing competing interpretations:

Because they aim quickly to acquaint the student with what the contemporary scientific community thinks it knows, textbooks treat the various experiments, concepts, laws, and theories of the current normal science as separately and as nearly seriatim as possible.

Kuhn, T.S. (1970), pg. 140

I found this narrative structure of physics and chemistry textbooks extremely misleading and difficult to follow as an undergraduate. Though difficult to implement, it strikes me that a better curriculum could be crafted around more open-ended exploration and assimilation of results of laboratory experiments.

The human condition corrupts scientific progress

Resistance by scientists to scientific discovery is an acknowledged phenomenon. Kuhn contributes the observation that this resistance is necessary for the progress of normal science, rather than a psychological failing attributable to ego or cognitive bias:

Though the historian can always find scientists who were unreasonable to resist for as long as they did, they will not find a point at which resistance becomes illogical or unscientific. At most one may wish to say that the person who continues to resist after the whole profession has been converted has ipso facto ceased to be a scientist.

Kuhn, T.S. (1970), pg. 159

This is refreshing since it redirects frustration one may feel when a progressive paper is rejected away from unproductive bitterness toward renewed progress.

Open questions

Does engineering research (an enormous enterprise today compared to the 1960's) fit Kuhn's `Structure` ?
Regardless, does engineering research qualify as a `science` (either under Kuhn's definition or another) ?

Notes

Kuhn wrote in a time when academia was utterly dominated by men; I elected to sanitize the gender bias in the quotes above.

The essay is a goldmine of landmark papers in the history, philosophy, psychology, & sociology of science — many such citations are included below even if I haven't been able to assimilate them above.

References

Barber, B.. Resistance by Scientists to Scientific Discovery. Science 134:596—602, (1961).

Bruner, J. S. and Postman, L.. On the perception of incongruity: a paradigm. Journal of Personality 18:206—223, (1949).

Kubie, L. S.. Some unsolved problems of the scientific career. American Scientist 41:pp. 596—613, (1953).

Kuhn, T.S. (1970). The structure of scientific revolutions. University of Chicago Press.

MacIver, R. M.. Science as a Social Phenomenon. Proceedings of the American Philosophical Society 105:pp. 500—505, (1961).

Schagrin, M. L.. Resistance to Ohm's Law. American Journal of Physics 31:536—547, (1963).

de Solla Price, D. J.. Networks of Scientific Papers. Science 149:510—515, (1965).

SwiMP3-Playlists

Sun, 19 May 2013 04:58:00 GMT

Just a quick script to streamline the creation of playlists on the SwiMP3 waterproof mp3 player. The player sorts songs alphabetically, so simply dragging files from your filesystem or iTunes will usually yield an incorrect order. Instead, create .m3u playlists directly on the USB device, then execute the following Python code in the same directory.

import os
from glob import glob

sfx = '.m3u'
lis = glob('*'+sfx)

for li in lis:
  l = li.strip(sfx)
  if not os.path.exists(l):
    cmd = 'mkdir "{l}"'.format(l=l)
    print cmd
    os.system(cmd)
    fis = open(li,'r').readline().split('\r')[::2][1:]
    for n,fi in enumerate(fis):
      f = fi.split('/')[-1]
      cmd = 'cp "{fi}" "{l}/{n:04d}_{f}"'.format(fi=fi,l=l,n=n,f=f)
      print cmd
      os.system(cmd)

If you update a playlist, simply delete the corresponding folder and re-run the script.

Forces-are-covariant

Sun, 19 May 2013 04:57:00 GMT

(if you see raw LaTeX rather than formulas below, you need MathJax)

I recently had a great deal of trouble solving what I regarded as a fairly simple physics problem that required transforming forces through a change of coordinates. The solution is straightforward once we recognize that forces are covariant.

If $p = \phi(q)$, then the chain rule yields $\dot{p} = D\phi(q) \dot{q}$ where $D\phi(q)$ is the Jacobian linearization of the coordinate transformation $\phi$ (in manifold lingo, $D\phi:TQ\rightarrow TP$ is the pushforward). Since the instantaneous power $F^T \dot{p}$ associated with a force $F$ represented in the $p$ coordinates is frame-invariant, direct substitution yields $F^T \dot{p} = F^T D\phi(q) \dot{q}$. Since $\dot{p}$ is arbitrary, the equivalent force represented in the $q$ coordinates must be $F^T D\phi(q)$. In differential-geometric terms, if we regard forces as covectors so that $F\in T^*Q$, this is simply the pullback $\phi^* F\in T^*P$. Therefore forces are (naturally) covariant.

One potential point of confusion: if the coordinate change is an isometry, i.e. $\phi(q) = R q + a$ for some orthogonal matrix $R$ and vector $a$, then forces can also be transformed by the pushforward of the inverse transformation. Specifically, let $\psi(p) = R^T(p - a)$ so that $\phi\circ\psi = \text{id} = \psi\circ\phi$. Then $D\phi = R$, and $D\psi = R^T = (R)^{-1} = (D\phi)^{-1}$. Therefore $F^T D\phi = (D\psi F)^T$, so in this case $F$ may be "pushed forward" and it appears that forces are contravariant. I cannot emphasize enough that this formula does not hold unless $\phi$ is an isometry.

unpublished.bib

Sun, 19 May 2013 04:54:00 GMT

@inproceedings{BurdenSastry2013,
	Author = {Burden, S and Sastry, S S},
	Title = {Reduction and Identification for Hybrid Dynamical Models of Terrestrial Locomotion},
	Booktitle = {SPIE Conference on Micro-Nanotechnology Sensors, Systems, and Applications},
        url = {SPIE2013},
	Year = {2013}}

@inproceedings{BurdenRevzen2013dw,
	Author = {Burden, S A and Revzen, S and Sastry, S S},
	Title = {From Anchors to Templates: Exact and Approximate Reduction in Models of Legged Locomotion},
	Booktitle = {Dynamic Walking},
        url = {DW2013},
	Year = {2013}}

@inproceedings{RevzenBurden2013dw,
	Author = {Revzen, S and Burden, S A and Koditschek, D E and Sastry, S S},
	Title = {Pinned equilibria provide robustly stable multilegged locomotion},
	Booktitle = {Dynamic Walking},
        url = {DW2013},
	Year = {2013}}

@inproceedings{BurdenRevzen2013,
	Author = {Burden, S A and Revzen, S and Moore, T Y and Sastry, S S and Full, R J},
	Title = {Using reduced-order models to study dynamic legged locomotion: Parameter identification and model validation},
	Booktitle = {Society for Integrative and Comparative Biology},
        url = {http://www.sicb.org/meetings/2013/schedule/abstractdetails.php?id=405},
	Year = {2013}}

@techreport{BurdenRevzen2011arxiv,
	Author = {Burden, S A and Revzen, S and Sastry, S S},
	Institution = {arXiv:1109.1780},
	Title = {Dimension Reduction Near Periodic Orbits of Hybrid Systems},
        url = {http://arxiv.org/abs/1109.1780},
	Year = {2011}}

@inproceedings{MooreRevzen2010,
	Author = {Moore, T Y and Revzen, S and Burden, S A and Full, R J},
	Title = {Adding inertia and mass to test stability predictions in rapid running insects},
	Booktitle = {Society for Integrative and Comparative Biology},
        url = {http://sicb.org/meetings/2010/schedule/abstractdetails.php3?id=1290},
	Year = {2010}}

SPIE2013

Fri, 17 May 2013 12:57:00 GMT

Reduction and Identification for Hybrid Dynamical Models of Terrestrial Locomotion

To generate the schematic and plots in the paper:

$ hg clone http://eecs.berkeley.edu/~sburden/code/spie2013 spie2013
$ cd spie2013
$ ipython 
ipy$ run hop --fp
ipy$ run -i hop --sch
ipy$ run -i hop --ic

Links: conference; paper; slides

Prerequisites
mercurial python ipython numpy scipy matplotlib

News

Thu, 16 May 2013 20:30:00 GMT

June 2013: to present work on reducing templates to anchors in the 2013 Dynamic Walking meeting at CMU in Pittsburgh, PA, USA. As a bonus, Shai Revzen will present our joint work on robust stability arising from simultaneous transitions in hybrid systems

May 2013: presented invited paper on reduction and identification of hybrid dynamical models for terrestrial locomotion at ARL in Adelphi, MD, USA and SPIE DSS in Baltimore, MD, USA (slides) (paper); thanks to Chris Kroninger and Will Nothwang for organizing the invited session and hosting the group at ARL!

April 2013: featured maker of tiny tech at the Lawrence Hall of Science (photos)

March 2013: presented at the Controls seminar at the University of Michigan in Ann Arbor, MI, USA (slides); thanks to Shai Revzen for inviting me, and all the U-M folks for stimulating conversations!

Feb 2013: pre-print on metrization and simulation of hybrid control systems available (arXiv: 1302.4402) (pdf)

Feb 2013: article investigating neuromechanical response of running cockroaches to large lateral perturbations to appear in Biological Cybernetics (doi: 10.1007/s00422-012-0545-z) (pdf); UMich press release featured in ScienceDaily, Discovery News, Wired UK, Popular Science, NSF Science360

Jan 2013: presented a technique for using reduced-order models to study dynamic legged locomotion at SICB in San Francisco, CA, USA

Dec 2012: co-organized and presented at a workshop on Control Systems in the Open World at CDC in Maui, HI, USA

LaTeX

Tue, 14 May 2013 16:51:00 GMT

atchange

I use the wonderful atchange to automatically recompile my LaTeX document using the equally wonderful rubber any time my .tex, .bib, or figures change. A typical configuration looks like:

*.tex
  bibtex doc
  rubber --pdf doc.tex

*.bib
  bibtex doc
  rubber --pdf doc.tex

fig/*.pdf
  bibtex doc
  rubber --pdf doc.tex

Inkscape

My preferred tool for illustrations is Inkscape. In addition to being FOSS, it is drivable from the command line! For instance, to export a .pdf,.pdf_tex pair on OSX:

/Applications/Inkscape.app/Contents/Resources/bin/inkscape fig/fig.svg --export-pdf=fig.pdf --export-latex --export-area-page --without-gui

Outreach

Sun, 28 Apr 2013 14:48:00 GMT

I am dedicated to broadening awareness of and participation in engineering, science, and mathematics.

Link to all outreach activities

Open Make @ the Hall

2013/04/20: Thanks to the Maker Education Initiative and the Lawrence Hall of Science for inviting me to be a featured maker at Open Make: Tiny Tech!

K-12 Classrooms

Together with Kevin Peterson and the EEGSA Outreach organization I designed a ~1hr robotics activity for K-12 classrooms that combines lecture material with hands-on robot design.

2013/04/03: Joaquin Miller Elementary School in Oakland, CA

2012/12/03: Boost! in West Oakland, CA

2012/11/27: Pittsburg High School in Pittsburg, CA

2012/11/09: Oakland Technical High School in North Oakland, CA

2012/11/02: Coliseum College Prep Academy in East Oakland, CA

2012/03/22: Coliseum College Prep Academy in East Oakland, CA

Summer Institute for Mathematics at the University of Washington

I regularly run a short course in robotics at the Summer Institute for Mathematics at the University of Washington. This is a particular pleasure since I participated in the inaugural (2003) cohort of this program.

UW MathDay

From 2009 — 2012 I delivered a robotics presentation at the University of Washington's huge MathDay, an annual event that draws thousands of high school students to campus.

Papers

Fri, 26 Apr 2013 20:05:00 GMT

In preparation

Journals

Peer-reviewed conferences

Invited papers, tech reports, symposium abstracts, &c.

journal.bib

Fri, 26 Apr 2013 20:05:00 GMT

@article{RevzenBurden2013,
	Author = {Revzen, S and Burden, S A and Moore, T Y and Mongeau, J M and Full, R J},
	Title = {Instantaneous kinematic phase reflects neuromechanical response to lateral perturbations of running cockroaches},
	Journal = {Biological Cybernetics},
        Volume = {107},
        Number = {2},
        Pages = {179-200},
	Year = {2013},
        Doi = {10.1007/s00422-012-0545-z},
        url = {papers/RevzenBurden2013.pdf}}

@article{NappBurden2011,
	Author = {Napp, N and Burden, S A and Klavins, E},
	Journal = {Autonomous Robots},
	Pages = {57-71},
	Title = {Setpoint regulation for stochastically interacting robots},
	Volume = {30},
	Year = {2011},
        doi = {10.1007/s10514-010-9203-2},
        url = {papers/NappBurden2011.pdf}}

inprep.bib

Thu, 25 Apr 2013 15:02:00 GMT

@techreport{BurdenGonzalezVasudevan2013,
	Author = {Burden, S A and Gonzalez, H and Vasudevan, R and Bajcsy, R and Sastry, S S},
	Title = {{Metrization and Simulation of Controlled Hybrid Systems}},
	Institution = {arXiv:1302.4402},
        url = {http://arxiv.org/abs/1302.4402},
	Year = {2013}}

@inproceedings{BurdenRevzen2013floq,
	Author = {Burden, S A and Revzen, S and Sastry, S S},
	Title = {Model Reduction Near Periodic Orbits of Hybrid Dynamical Systems},
	Booktitle = {In preparation},
	Year = {Q2 2013}}

@inproceedings{BurdenRevzen2013multi,
	Author = {Burden, S A and Revzen, S and Koditschek, D E and Sastry, S S},
	Title = {Robust Limit Cycles in Hybrid Systems with Simultaneous Transitions},
	Booktitle = {In preparation},
	Year = {Q2 2013}}

@inproceedings{HooverBurden2013,
	Author = {Hoover, A and Burden, S A and Sastry, S S},
	Title = {Biologically-Inspired Design and Maneuverability of a Minimally-Actuated Milliscale Hexapedal Robot},
	Booktitle = {In preparation},
	Year = {Q3 2013}}

@inproceedings{MooreBurden2013,
	Author = {Moore, T Y and Burden, S A and Revzen, S and Full, R J},
	Title = {Adding inertia and mass to test stability predictions in rapid running insects},
	Booktitle = {In preparation},
	Year = {Q4 2013}}

Open Make

Wed, 24 Apr 2013 16:00:00 GMT

The Lawrence Hall of Science partnered with the Maker Education Initiative to run a series of "Open Make" events targeting young makers. After seeing the press coverage for our Biological Cybernetics paper, they invited me to be a "featured maker" and teach kids how to build robotic cockroaches.

Photos from the event are available; here are a few featuring my demonstration:

Video discussing the motivation for the event:

Open Data

Fri, 19 Apr 2013 19:31:00 GMT

economics

Sam Burden

vim

Remap CAPS-LOCK to ESC

gui

rc

Find and replace in selection

Search only in LaTeX math mode

Blog

Writing

Papers

Computers

Punctuated-Equilibrium

For the uninitiated

A case study in paradigm shift

Lessons for revolutionaries

References

gould.bib

Migration-to-tiddlyWiki

Robot-Ethics

Rosetta-Stone

Pace

Grammar

Listening

Structure-of-Scientific-Revolutions

Narrative fallacy in science curriculum

The human condition corrupts scientific progress

Open questions

Notes

References

SwiMP3-Playlists

Forces-are-covariant

unpublished.bib

SPIE2013

Reduction and Identification for Hybrid Dynamical Models of Terrestrial Locomotion

News

LaTeX

atchange

Inkscape

Outreach

Open Make @ the Hall

K-12 Classrooms

Summer Institute for Mathematics at the University of Washington

UW MathDay

Papers

In preparation

Journals

Peer-reviewed conferences

Invited papers, tech reports, symposium abstracts, &c.

journal.bib

inprep.bib

Open Make

Open Data