These are my recent Pin​board​.in links:

• [1204.4366] Multipath-​​dominant, pulsed doppler analy­sis of rotat­ing blades

  “We present a novel angu­lar fin­ger­print­ing algo­rithm for detect­ing changes in the direc­tion of rota­tion of a tar­get with a mono­sta­tic, sta­tion­ary sonar plat­form. Unlike other approaches, we assume that the target’s cen­troid is sta­tion­ary, and exploit doppler mul­ti­path sig­nals to resolve the oth­er­wise unavoid­able ambi­gu­i­ties that arise. Since the algo­rithm is based on an under­ly­ing dif­fer­en­tial topo­log­i­cal the­ory, it is highly robust to dis­tor­tions in the col­lected data. We demon­strate per­for­mance of this algo­rithm exper­i­men­tally, by exhibit­ing a pulsed doppler sonar col­lec­tion sys­tem that runs on a smart­phone. The per­for­mance of this sys­tem is suf­fi­ciently good to both detect changes in tar­get rota­tion direc­tion using angu­lar fin­ger­prints, and also to form high-​​resolution inverse syn­thetic aper­a­ture images of the target.”
  
  signal-​​processing algo­rithms radar nudge-​​targets the-​​imperial-​​we

• [1204.3850] Sim­ple Agents Learn to Find Their Way: An Intro­duc­tion on Map­ping Polygons

  “This paper gives an intro­duc­tion to the prob­lem of map­ping sim­ple poly­gons with autonomous agents. We focus on min­i­mal­is­tic agents that move from ver­tex to ver­tex along straight lines inside a poly­gon, using their sen­sors to gather local obser­va­tions at each ver­tex. Our atten­tion revolves around the ques­tion whether a given con­fig­u­ra­tion of sen­sors and move­ment capa­bil­i­ties of the agents allows them to cap­ture enough data in order to draw con­clu­sions regard­ing the global lay­out of the poly­gon. In par­tic­u­lar, we study the prob­lem of recon­struct­ing the vis­i­bil­ity graph of a sim­ple poly­gon by an agent mov­ing either inside or on the bound­ary of the poly­gon. Our aim is to pro­vide insight about the algo­rith­mic chal­lenges faced by an agent try­ing to map a poly­gon. We present an overview of tech­niques for solv­ing this prob­lem with agents that are equipped with sim­ple sen­so­r­ial capa­bil­i­ties. We illus­trate these tech­niques on exam­ples with sen­sors that mea– sure angles between lines of sight or iden­tify the pre­vi­ous loca­tion. We give an overview over related prob­lems in com­bi­na­to­r­ial geom­e­try as well as graph exploration.”
  
  agent-​​based algo­rithms nudge-​​targets

• [1204.4202] Fuzzy Dynam­i­cal Genetic Pro­gram­ming in XCSF

  “A num­ber of rep­re­sen­ta­tion schemes have been pre­sented for use within Learn­ing Clas­si­fier Sys­tems, rang­ing from binary encod­ings to Neural Net­works, and more recently Dynam­i­cal Genetic Pro­gram­ming (DGP). This paper presents results from an inves­ti­ga­tion into using a fuzzy DGP rep­re­sen­ta­tion within the XCSF Learn­ing Clas­si­fier Sys­tem. In par­tic­u­lar, asyn­chro­nous Fuzzy Logic Net­works are used to rep­re­sent the tra­di­tional condition-​​action pro­duc­tion sys­tem rules. It is shown pos­si­ble to use self-​​adaptive, open-​​ended evo­lu­tion to design an ensem­ble of such fuzzy dynam­i­cal sys­tems within XCSF to solve sev­eral well-​​known continuous-​​valued test problems.”
  
  learning-​​classifier-​​systems genetic-​​programming fuzzy-​​math dynamical-​​control rules-​​learning nudge-​​targets

• Omni­scient Gen­tle­men of The Atlantic | | Note­book | The Baffler

  “What mys­ti­fied Grove was the asser­tion, voiced by the econ­o­mist Alan Blinder and oth­ers, “that as long as ‘knowl­edge work’ stays in the U.S., it doesn’t mat­ter what hap­pens to fac­tory jobs.” This was not only inhu­mane, Grove declared; it was idiotic.”
  
  via:cshalizi cor­po­ratism pub­lish­ing social-​​engineering jour­nal­ism they-​​say-​​the-​​best-​​astroturf-​​has-​​no-​​color-​​at-​​all

• [1204.3293] Effi­ciently decod­ing strings from their shingles

  “Deter­min­ing whether an unordered col­lec­tion of over­lap­ping sub­strings (called shin­gles) can be uniquely decoded into a con­sis­tent string is a prob­lem that lies within the foun­da­tion of a broad assort­ment of dis­ci­plines rang­ing from net­work­ing and infor­ma­tion the­ory through cryp­tog­ra­phy and even genetic engi­neer­ing and lin­guis­tics. We present three per­spec­tives on this prob­lem: a graph the­o­retic frame­work due to Pevzner, an automata the­o­retic approach from our pre­vi­ous work, and a new insight that yields a time-​​optimal stream­ing algo­rithm for deter­min­ing whether a string of $n$ char­ac­ters over the alpha­bet $Sigma$ can be uniquely decoded from its two-​​character shin­gles. Our algo­rithm achieves an over­all time com­plex­ity $Theta(n)$ and space com­plex­ity $O(|Sigma|)$. As an appli­ca­tion, we demon­strate how this algo­rithm can be extended to larger shin­gles for effi­cient string reconciliation.”
  
  strings algo­rithms computational-​​complexity nudge-​​targets

• Script­ing News: It’s def­i­nitely a bubble

  “They’re turn­ing uni­ver­si­ties into incu­ba­tors. It’s hap­pen­ing at NYU and Har­vard, two schools I have some famil­iar­ity with. Prob­a­bly every­where else too, to some extent. But I’d guess these two schools are pretty lead­ing edge. Stan­ford has been there for a few generations.”
  
  bub­ble entrepreneurship-​​as-​​pathology startup-​​culture-​​must-​​die ayup

• H.P. Love­craft Answers Your Rela­tion­ship Ques­tions « The Bygone Bureau

  
  via:cshalizi love­craft humor also-​​the-​​whole-​​zine-​​blog-​​thing

• CodeMir­ror

  “CodeMir­ror is a JavaScript library that can be used to cre­ate a rel­a­tively pleas­ant edi­tor inter­face for code-​​like con­tent ― com­puter pro­grams, HTML markup, and sim­i­lar. If a mode has been writ­ten for the lan­guage you are edit­ing, the code will be coloured, and the edi­tor will option­ally help you with indentation.”
  
  javascript edi­tor library toolkit bookphile