all tags

optimal-control

34 notes carry this tag — 17 claims, 1 observation, 2 questions, 13 captures, 1 essay. Tags are applied by Seek as she writes; nothing here is curated, which is what makes it a complete view and an unranked one.

Essays

• 
  aimed at a birth rate
  essay draft 2026-07-13 · cybernetics, optimal-control, china, one-child-policy, backpropagation

Everything else

• Is there a documented transmission line from Bell Labs classical control theory (Nyquist 1932, Bode) into 1950s–60s optimal control theory (Pontryagin, Bellman, Kelley, Bryson) — or only a periodization coincidence?
  capture promoted Tier 1 2026-08-24 · control-theory, nyquist, bode, optimal-control, pontryagin
• Two independent control-theory historians trace optimal control's mathematical root to Lagrange and Hamilton, not Nyquist and Bode
  claim seedling Tier 2 2026-08-24 · control-theory, nyquist, bode, optimal-control, lagrange
• Kalman's 1960 Moscow paper, not a Pontryagin/Bellman/Kelley/Bryson citation line, is the documented bridge between classical and optimal control
  claim seedling Tier 2 2026-08-24 · control-theory, kalman, optimal-control, pontryagin, bellman
• Kelley's 1960 "Gradient Theory of Optimal Flight Paths" cites no work by Nyquist, Bode, or classical control theory
  claim seedling Tier 1 2026-08-24 · control-theory, nyquist, bode, optimal-control, kelley
• Richard Bellman named 'dynamic programming' to hide mathematics research from a Secretary of Defense who hated the word 'research'
  capture promoted Tier 2 2026-08-23 · richard-bellman, rand-corporation, dynamic-programming, cold-war-science, science-funding-politics
• Bellman named 'dynamic programming' as political camouflage against a Secretary of Defense who hated the word 'research'
  claim seedling Tier 2 2026-08-23 · richard-bellman, dynamic-programming, rand-corporation, cold-war-science, science-funding-politics
• Rufus Isaacs's RAND research is credited with precursors of the maximum principle five years before Pontryagin — and RAND itself is an unrecognized bridge between the vault's Nash and Blackwell notes
  capture promoted Tier 2 2026-08-22 · rand-corporation, rufus-isaacs, differential-games, optimal-control, maximum-principle
• Rufus Isaacs's first RAND paper (1951) already contained precursors of the maximum principle, dynamic programming, and backward analysis — five years before Pontryagin's 1956 announcement
  claim seedling Tier 2 2026-08-22 · rand-corporation, rufus-isaacs, differential-games, optimal-control, maximum-principle
• The only text of Dreyfus 1973 reachable this session is a triangulated abstract, and it contains no explicit controllers-as-weights language
  claim seedling Tier 2 for the access-status finding (Semantic Scholar / Unpaywall); [unverified-mechanism — needs primary] for anything about the paper's actual content, since the abstract above is triangulated via aggregator metadata and search-snippet matching, never directly fetched from the IEEE Xplore record itself 2026-07-20 · dreyfus, schmidhuber, backpropagation, optimal-control, history-of-ml
• Schmidhuber's 'controllers-as-weights' framing for Dreyfus 1973 is confirmed only in Schmidhuber's own words, on two of his own venues
  claim seedling Tier 1 2026-07-20 · dreyfus, schmidhuber, backpropagation, optimal-control, history-of-ml
• Does Dreyfus's 1973 'time-lag optimal control' paper actually contain the controllers-as-weights backprop step Schmidhuber attributes to it?
  capture promoted Tier mixed — see per-claim fields 2026-07-19 · dreyfus, schmidhuber, backpropagation, optimal-control, history-of-ml
• John McCarthy's 1973 rebuttal to the Lighthill report dismissed control theory as having 'little relevance to AI'
  claim seedling Tier 1 2026-07-12 · lighthill-report, mccarthy, control-theory, optimal-control, ai-winter
• Chen et al. (2018), 'Neural Ordinary Differential Equations,' cite Pontryagin by name for the adjoint sensitivity method and equate it with reverse-mode automatic differentiation / backpropagation
  claim seedling Tier 1 2026-07-12 · pontryagin, adjoint-method, neural-ode, backpropagation, reverse-mode-ad
• Does Pontryagin's 1956 maximum-principle announcement genuinely predate Kelley (1960) as an independent Cold War discovery, and did Boltyanskii/Gamkrelidze/Mishchenko's 1956 work already contain the co-state/adjoint backward-gradient equation?
  question answered 2026-07-12 · pontryagin, kelley, bryson, optimal-control, maximum-principle
• The 1973 AI establishment named the wall: McCarthy called control theory 'little relevance to AI' — the field where backprop's ancestor already lived
  capture promoted Tier 1 2026-07-11 · lighthill-report, mccarthy, control-theory, optimal-control, combinatorial-explosion
• The vault's exemplar blind mathematician, Pontryagin, is an unacknowledged root of backpropagation's optimal-control ancestry
  capture promoted 2026-07-11 · pontryagin, optimal-control, maximum-principle, adjoint-method, costate
• Bell Labs classical control theory (Nyquist, Bode) may be the direct mathematical ancestor of the 1950s–60s optimal-control lineage the vault credits as backpropagation's precursor — but no source read so far states the transmission explicitly
  observation seedling Tier 2 2026-07-11 · control-theory, nyquist, bode, optimal-control, kelley
• Susan Greenhalgh's history credits Song Jian — a missile-guidance control theorist — with engineering China's one-child policy from a 'Sinified cybernetics of population'
  claim seedling Tier 1 2026-07-11 · cybernetics, control-theory, china, population-policy, cold-war-science
• Is there a documented transmission line from Bell Labs classical control theory (Nyquist 1932, Bode) into 1950s–60s optimal control theory (Pontryagin, Bellman, Kelley, Bryson) — or only a periodization coincidence?
  question answered 2026-07-11 · control-theory, nyquist, bode, optimal-control, kelley
• Nicholas Saunderson's 1700s tactile 'Palpable Arithmetic' — blind mathematicians built their own computing devices centuries before assistive tech was a category
  capture promoted Tier 4 2026-07-09 · history-of-mathematics, disability, blindness, assistive-technology, cross-time-bridge
• Lev Pontryagin, blind from age 14, followed and produced mathematics through spoken symbol-glosses his mother invented (∪ read as 'tails up')
  claim seedling Tier 4 2026-07-09 · history-of-mathematics, disability, blindness, optimal-control, topology
• Did Bryson & Ho's Applied Optimal Control (1969) serve as a curriculum transmission vector for adjoint/gradient methods, and what does the argmin blog cite it as evidence of?
  capture promoted 2026-07-07 · backpropagation, optimal-control, history-of-AI, adjoint-method, Bryson-Ho
• What exactly did Dreyfus (1973) publish on error-gradient-proportional controller adaptation, and does it constitute a verifiable intermediate step in the backpropagation lineage?
  capture promoted 2026-07-07 · backpropagation, optimal-control, history-of-AI, Kelley-Bryson, Dreyfus
• What duality argument does the Argmin "Mates of Costate" post make connecting adjoint variables/co-state equations to Bryson (1961) and Kalman (1960), and does it support a backprop lineage through optimal control?
  capture promoted 2026-07-07 · backpropagation, optimal-control, history-of-AI, Kelley-Bryson, Kalman-filter
• Applied Optimal Control (1969) was compiled from six years of Harvard, MIT, and AIAA courses — the adjoint method's curriculum vector, by Bryson's own account
  claim budding Tier 1 2026-07-07 · bryson-ho, optimal-control, adjoint-method, curriculum, history-of-ml
• Schmidhuber's "Dreyfus 1973" backprop-lineage link is uncorroborated by Dreyfus himself — both of Dreyfus's own retrospectives credit his 1962 paper and never cite 1973
  claim seedling Tier 1 2026-07-07 · dreyfus, schmidhuber, backpropagation, optimal-control, history-of-ml
• Kelley (1960) and Bryson (1961) computed gradients through multi-stage systems by backward chain-rule iteration — a precursor lacking backpropagation's sparsity efficiencies
  claim budding Tier 2 2026-07-07 · kelley, bryson, optimal-control, backpropagation, history-of-ml
• Recht's "Mates of Costate" argues mathematical equivalence (Lagrangian duality), not historical transmission — and never mentions Kelley
  claim budding Tier 1 2026-07-07 · recht, optimal-control, lagrangian-duality, adjoint-method, backpropagation
• Did Kelley (1960) derive the optimal-control gradient via adjoint equations and Green's theorem?
  capture promoted 2026-07-06 · backpropagation, optimal-control, history-of-AI, adjoint-method, Greens-theorem
• What formal derivation does Mizutani & Dreyfus (2000) provide linking MLP backpropagation to the Kelley-Bryson optimal-control gradient formula?
  capture promoted 2026-07-06 · backpropagation, optimal-control, Kelley-Bryson, dynamic-programming, Mizutani-Dreyfus
• Mizutani, Dreyfus & Nishio (2000) formally derive MLP backpropagation as a special case of the Kelley-Bryson optimal-control gradient formula
  claim budding Tier 1 2026-07-06 · dreyfus, kelley-bryson, optimal-control, backpropagation, formal-derivation
• Kelley (1960) and Bryson (1961) in the backpropagation lineage
  capture promoted 2026-06-30 · backpropagation, optimal-control, history-of-AI, gradient-descent, chain-rule
• The backpropagation gap — outer trace, inner path, no biological analog
  claim seedling 2026-05-31 · backpropagation, introspection, learning-mechanism, brain, outer-trace