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Volume 25 of W. Ross Ashby's Journal
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1968
Volume 25
6975+03 6975+04
6975+05 6975+06
Independence effect on Q
Interaction and independence
6976 6977
Summary: Interaction between two subsets of variables.
Summary: If two variables do not communicate, either directly or indirectly, then any interaction Q that include them must go to zero.
Steady state Morowitz' book
Thermodynamics Morowitz' book
6978 6979
6980 6981
1969
Summary: Morowitz' magnificent book. 7053
Entropy expected value
Constraint permutation as
Permutation constraint necessary
Transmission for permutation
6982 6983
Summary: The informational qualities involved when the coordination achieves a permutation. 6993, 7006
6984 6985
Transmission meaning of
6986 6987
Summary: Three ways to transmission. 7015, 7020
Bears Problem of the
6988 6989
Dummy signals
Signal necessary for
Symbols necessary
6990 6991
6992 6993
Summary: The Problem of the Four Bears, solved. 7054, 7078
6994 6995
Summary: Casual analysis, Four Bears. 7167
6996 6997
Cause cause analysis
6998 6999
7000 7001
Interaction as operation
7002 7003
Summary: Cause Analysis. 7007, 7027, 7167
Summary: The Two Tracks, solved. 7077
7004 7005
Summary: Mere broadcasting induces high-order interaction. 7097
Broadcast gives interaction
Broadcasting gives interaction
Interaction by broadcasting
Constraint mechanisms for
7006 7007
7008 7009
Joining and interactions
7010 7011
Metric in a system
Constraint synthesis
7012 7013
Summary: Achieving constraints with physical systems. 7053 (foot), 7077, 7146
7014 7015
Transmission analysis of
Constraint isomorphic channels
7016 7017
Information the identities of
Multinomial measure of information
7018 7019
Summary: What are these identities of information theory? 7030, 7051, 7159
Summary: What is a "channel"? 7031, 7083
7020 7021
Coding Shannon's theorems
7022 7023
Summary: The core of Shannon's thinking.
7025 7026
Information Cause analysis
7027 7028
7029 7030
7031 7032
7033 7034
Summary: Discriminatory work. 7146
7035 7036
Complexity conservation of
Conservation of Complexity Law of
7037 7038
Summary: Notes on Information operators.
7039 7040
7041 7042
7043 7044
7045A 7045B
Summary: [H, T, and Q] as operators that alter distributions.
7046 7047
7048 7049
Summary: Specifying an n-tuple in a distribution and on its components. 7170. Simpler example 7087
7050 7051
Summary: Blissard-type operations in the identities of information analysis.
Blissard (calculus)
Identities Blissard calculus
Summary: Energy for the earth as a steady state.
Constraint Friedman and Leondes
7052 7053
Coordination requires coordination
7054 7055A
7055A+01 7055B
7055B+01 7055C
Summary: Coordination analysis.
7056 7057
7058 7059
Summary: Coordination with memory. 7064
Matrix random
7060 7061
Summary: Chemical gardens and steady states.
Chemical garden making
Summary: Where the sample space comes from, in physiology. 7140
7062 7063
Coordination in shoal
7064 7065
Summary: Communication required to keep a shoal of fish together. 7068, 7067, 7084
Entropy of Gaussian distribution
Summary: Entropy of a Gaussian distribution. 7069
7066 7067
Summary: The Case of the Two (and Only Two) Volunteers.
Summary: "Keeping together" demands very little in communication.
7068 7069
7070 7071
Summary: Keeping fishes together. 7084
7072 7073
Perceptron Minsky and Papert
7074 7075
Summary: Minsky and Papert really get hold of the Perceptron.
Coding problem
7076 7077
7078 7079
Summary: The Problem of Coding successfully stated.
7080 7081
Summary: The Coding Problem, even when asked only of binary relations, does not always admit a solution giving equality. 7086
Summary: A channel must be coded into and coded out of.
Channel what is a channel?
7082 7083
Summary: Keeping a shoal together.
7084 7085
Summary: Coding coordination between three variables on to two channels.
7086 7087
1970
Summary: Transmission enters when an unordered set is distributed over a product space. Example 7092
Self-awareness in chimpanzee
Summary: Self-recognition.
Information in design
7088 7089
Design informational cost
7090 7091
Summary: "Design" as a transmission of information. 7108 example.
7092 7093
Information in pulse and gap
Summary: No-pulse may carry more information than pulse.
7094 7095
Summary: Why allowing interaction boosts up informational demands. 7122, 7127
Information and interaction
7096 7097
Transmission repeated arguments
7098 7099
Summary: Informational identities when arguments are repeated, or equalised.
7100 7101
Summary: Interactions when there are repetitions.
Interaction by copying
Model Conant's theorem
7102 7103
Summary: A worked out example of Conant's theorem on isomorphism in regulators. 7117
Games as noisy transmission
Noise and games
7104 7105
Summary: Example of how much selection is required to make a system stable.
Information required for stability
Stability information needed
7106 7107
Summary: Numerical confirmation of the theorem relating input-constraint and design. 7115, 7123, 7127
7108 7109
Selection the whole process
Summary: The totality of selection and the pieces. 7126
7110 7111
Channel capacity Least Safe
Least Safe Capacity
Summary: Examples of a channel that must have Least Safe Capacity, though transmitting less.
Epistemology [56]: McCrea's "principle" (7113) "The less information we can get [about distant events] the less we need in order to make predictions that are testable by observation.".
7112 7113
Summary: An idea, not yet developed.
Design informational cost
7114 7115
Summary: Informational cost of making (designing) a channel.
Model applied to Watt's govenor
7116 7117
Summary: Conant's theorem on models applied to the Watt's governor.
7118 7119
Summary: The error-controlled regulator, and the doctor who is one patient behind in his treatments.
7120 7121
Summary: "Between" as subset (of a 3-dimensional) space.
Between as ternary relation
Relation of "between"
7122 7123
1971
Summary: Interaction between parts having inputs raises the complexity by x ki. i = number of inputs to each part; k = number of values (states) of each part).
Information and interaction
Interaction increases information by x ki
Summary: Me and my brain in dreams.
Dream and "self"
Self-awareness impossible
7124 7125
Summary: Transmission cannot be created. 7146
Conservation of Complexity Law of
Transmission cannot be created
Information and interaction
Interaction squares it (doubled size)
Size, effect of on information
7126 7127
Summary: Among systems all of full interaction, doubling the size of the systems multiplies the information demands by the number of bits required initially.
HYFI (Hydraulic Feedack Imitator) design
7128 7129
HYFI (Hydraulic Feedack Imitator) equations
7130 7131
7132 7133
Summary: HYFI (Mark I), its behaviour and mathematics.[Hydraulic Feedback Imitator]
HYFI (Hydraulic Feedack Imitator) pair of
7134 7135
Summary: Two units of HYFI (Hydraulic Feedback Imitator) cross-connected - maths of.
Network sensitivity
Size, effect of on behaviour
7136 7137
7138 7139
1972
Summary: All large systems will tend to be insensitive, in their behaviours, to changes in size.
Summary: Why does Man's brain weigh just 2½ pounds ? 7143
7140 7141
Interaction and vector-formation
N-tuple effect on Q
Vector effect on Q
Summary: Thinking variables into vectors does not raise the order of the highest non-zero interaction.
7142 7143
Summary: In some cases "bits per second" may be less meaningful than "highest order of non-zero interaction".
Indexed as far as
Memory sentence with short memory
Sentence with limited memory
7144 7145
7146 7147
7148 7149
7150 7151
Summary: Causal analysis traced back to natural (physico-chemical or other) laws as origin. (This last note has decided me to write up my collected ideas as a book)
7152 7153
Summary: The identities in H, T, Q remain identities if the letters are changed to script.
7154 7155
7156 7157
Summary: A collected list of laws (of all types). 7174
7158 7159
7160 7161
Summary: What Axioms 1 and 2 really imply. 7170, 7174
7162 7163
7164 7165
Summary: Example of causal analysis. 7174
7166 7167
Summary: The term expressing A's effect on the coding between B and C is the interaction [Q] (not the previously suggested YA[B:C])
7168 7169
7170 7171
Summary: Elements specified by n-tuples. 7182
Summary: Information analysis and the analysis of variance.
7172 7173
7174 7175
Summary: Application of the idea of conservation of energy varies widely in its obviousness. A collected list.
7176 7177
7178 7179
Summary: Where information analysis ("conservation of causation") might be used.
7180 7181
Summary: Forming a partition seems again to emerge as the fundamental operation.
7182 7183
Summary: Scientific study is just performing partitions.
7184 7185
7186 7187
7188 7189
7189+01 7189+02
7189+03 7189+04

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