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Information theory - Test
Katkıları bulunanlar: Haynes
  • 1. What are pseudorandom number generators in computer language libraries almost universally unsuited for?
A) Cryptographic use
B) Bioinformatics
C) Seismic exploration
D) Gambling
  • 2. What must cryptographically secure pseudorandom number generators have to work as intended?
A) Analog processing methods
B) Random seeds external to the software
C) Integrated neural clusters
D) High Shannon entropy
  • 3. How can random seeds for pseudorandom generators be obtained?
A) Through Shannon entropy
B) By using semiotic signs
C) Via digital noise
D) Via extractors
  • 4. What is the measure of sufficient randomness in extractors?
A) Effective information
B) Dynamic core hypothesis
C) Min-entropy
D) Free energy
  • 5. Min-entropy is related to Shannon entropy through which other type of entropy?
A) Conditional entropy
B) Rényi entropy
C) Algorithmic entropy
D) Thermal entropy
  • 6. Where is Rényi entropy also used?
A) In seismic oil exploration
B) In minimizing free energy
C) In semiotic code control
D) In evaluating randomness in cryptographic systems
  • 7. Does a random variable with high Shannon entropy guarantee it is satisfactory for use in an extractor?
A) No
B) Yes
C) Only for pseudorandom numbers
D) Only in cryptographic systems
  • 8. What was one early commercial application of information theory?
A) Bioinformatics
B) Seismic oil exploration
C) Black hole analysis
D) Search for extraterrestrial intelligence
  • 9. What did information theory make it possible to do in seismic exploration?
A) Generate secure pseudorandom numbers
B) Strip off and separate unwanted noise from the desired seismic signal
C) Decode dominant social messages
D) Minimize free energy in the brain
  • 10. What methods offered a major improvement of resolution and image clarity over previous analog methods in seismic work?
A) Cryptographically secure pseudorandom number generators
B) Information theory and digital signal processing
C) Extractors and Rényi entropy
D) Free energy principles
  • 11. Which semioticians considered Charles Sanders Peirce as having created a theory of information?
A) Karl J. Friston and Andrey Kolmogorov
B) Gerald Edelman and Giulio Tononi
C) Umberto Eco and Ferruccio Rossi-Landi
D) Doede Nauta and Winfried Nöth
  • 12. How did Doede Nauta define semiotic information theory?
A) The separation of unwanted noise from seismic signals
B) The measurement of sufficient randomness in extractors
C) The minimization of free energy in a self-organized system
D) The study of the internal processes of coding, filtering, and information processing
  • 13. Which semioticians used concepts like redundancy and code control to explain ideology?
A) Doede Nauta and Winfried Nöth
B) C.E. Shannon and R.V.L. Hartley
C) Umberto Eco and Ferruccio Rossi-Landi
D) Gerald Edelman and Karl J. Friston
  • 14. In semiotic explanations of ideology, how does a dominant social class emit its message?
A) By using signs that exhibit a high degree of redundancy
B) By applying the free energy principle
C) By utilizing cryptographically secure pseudorandom seeds
D) Through digital signal processing of seismic signals
  • 15. Where have quantitative information theoretic methods been applied in cognitive science?
A) To explore seismic oil deposits
B) To analyze the integrated process organization of neural information
C) To extract random numbers for cryptography
D) To study black holes and bioinformatics
  • 16. What neurological problem is linked to the analysis of neural information organization?
A) The binding problem in cognitive neuroscience
B) The problem of algorithmic complexity
C) The issue of seismic noise filtering
D) The paradox of extraterrestrial intelligence
  • 17. Whose functional clustering model and dynamic core hypothesis define an information-theoretical measure in neural processing?
A) Gerald Edelman and Giulio Tononi
B) Doede Nauta and Winfried Nöth
C) R.V.L. Hartley and C.E. Shannon
D) Umberto Eco and Ferruccio Rossi-Landi
  • 18. What is Giulio Tononi's integrated information theory (IIT) of consciousness based on?
A) Seismic signal processing
B) Shannon entropy
C) Min-entropy
D) Effective information
  • 19. What underlies the definition of measures in the context of neural information organization?
A) External cryptographic random seeds
B) Analog methods of data transmission
C) A high degree of redundancy in signs
D) A reentrant process organization
  • 20. What does a reentrant process organization refer to?
A) The coding and filtering processes studied in semiotics
B) The generation of pseudorandom numbers using extractors
C) The synchronization of neurophysiological activity between groups of neuronal populations
D) The filtering of unwanted noise from desired seismic signals
  • 21. Whose free energy principle (FEP) states that every adaptive change leads to a minimization of free energy?
A) Charles Sanders Peirce
B) Giulio Tononi
C) Karl J. Friston
D) Gerald Edelman
  • 22. What type of system does the free energy principle apply to?
A) An analog seismic receiver
B) A cryptographic random number generator
C) A self-organized system
D) A dominant social class
  • 23. Along with the free energy principle, what other hypothesis is mentioned in relation to statistical methods in the brain?
A) The Bayesian brain hypothesis
B) The integrated information theory
C) The dynamic core hypothesis
D) The semiotic information theory
  • 24. Which field, aside from cryptography and seismology, has applications in information theory?
A) Astrology
B) Phrenology
C) Alchemy
D) Search for extraterrestrial intelligence
  • 25. Which physical phenomenon is listed alongside extraterrestrial intelligence as having applications for information theory?
A) Neural clusters
B) Seismic waves
C) Tectonic plates
D) Black holes
  • 26. What life-science field is mentioned as having applications in information theory?
A) Biophysics
B) Bioinformatics
C) Biochemistry
D) Biomechanics
  • 27. What recreational activity is listed as an application of information theory?
A) Cipher creation
B) Chess
C) Gambling
D) Crosswords
  • 28. Who is listed in the history section alongside C.E. Shannon and Andrey Kolmogorov?
A) Umberto Eco
B) R.V.L. Hartley
C) Doede Nauta
D) Gerald Edelman
  • 29. Who is mentioned in the history section alongside R.V.L. Hartley and Andrey Kolmogorov?
A) C.E. Shannon
B) Ferruccio Rossi-Landi
C) Winfried Nöth
D) Giulio Tononi
  • 30. Who is listed in the history section alongside R.V.L. Hartley and C.E. Shannon?
A) Andrey Kolmogorov
B) Charles Sanders Peirce
C) Karl J. Friston
D) Winfried Nöth
  • 31. What is the historical figure H.P. Yockey associated with in the text?
A) Integrated information theory
B) History of information theory
C) Dynamic core hypothesis
D) Free energy principle
  • 32. What do physiological systems use information theory to exchange, process, and integrate as?
A) A brute force attack
B) A block cipher
C) A single organ
D) A network
  • 33. What do physiological systems generate alongside functions in health and disease?
A) Information theory units
B) Distinct physiological states
C) Unicity distances
D) Symmetric keys
  • 34. What does network cross-communication and regulation reveal within the organism?
A) How it occurs
B) Why brute force attacks succeed
C) Why it ceases permanently
D) How encryption keys are generated
  • 35. Which interactions are listed as applications of information-theoretic approaches in physiology?
A) Cardio-respiratory interactions
B) Cryptographic interactions
C) Enigma machine interactions
D) One-time pad interactions
  • 36. In what kind of environments is network physiology applied according to the text?
A) Extreme environments
B) Underground bunker environments
C) Cryogenic laboratory environments
D) Simulated virtual environments
  • 37. What was the name of Turing's information unit used in the Ultra project?
A) The ban
B) The shannon
C) The byte
D) The bit
  • 38. In which project was Turing's information unit used?
A) The Enigma project
B) The Venona project
C) The Unicity project
D) The Ultra project
  • 39. What German machine code was broken during World War II with the help of the ban?
A) Lorenz cipher code
B) Symmetric key code
C) One-time pad code
D) Enigma machine code
  • 40. What does information theory lead us to believe about keeping secrets?
A) It is much more difficult than it might first appear
B) It requires no computational effort
C) It is extremely easy using symmetric keys
D) It is completely impossible under any circumstances
  • 41. What kind of attack can break systems based on asymmetric or symmetric key algorithms?
A) A brute force attack
B) An information-theoretic attack
C) A network physiology attack
D) A conditional mutual attack
  • 42. What are symmetric key algorithms sometimes called?
A) Asymmetric algorithms
B) Unicity distance algorithms
C) One-time pads
D) Secret key algorithms
  • 43. What is an example of a commonly used method of symmetric key algorithms?
A) Transfer entropy
B) Block ciphers
C) Bans
D) One-time pads
  • 44. What must be used correctly even when applying information-theoretically secure methods?
A) Care
B) Block ciphers
C) Transfer entropy
D) Brute force
  • 45. Which project was able to crack the one-time pads of the Soviet Union?
A) The Enigma project
B) The Ultra project
C) The Venona project
D) The Network Physiology project
  • 46. In which type of data compression must the data be reconstructed exactly?
A) Rate-distortion theory
B) Channel coding
C) Lossless data compression
D) Lossy data compression
  • 47. What justifies the division of coding theory into compression and transmission?
A) Source-channel separation theorems
B) Channel resolvability
C) Pragmatic information
D) Rate-distortion theory
  • 48. What do source-channel separation theorems justify the use of as the universal currency for information?
A) Bits
B) Entropy
C) Distortion functions
D) Bytes
  • 49. What type of channel involves more than one transmitter?
A) The broadcast channel
B) The multiple-access channel
C) The relay channel
D) The wiretap channel
  • 50. What type of channel involves more than one receiver?
A) The broadcast channel
B) The wiretap channel
C) The relay channel
D) The multiple-access channel
  • 51. What type of channel involves intermediary helpers?
A) The wiretap channel
B) The broadcast channel
C) The relay channel
D) The multiple-access channel
  • 52. What should joint entropy not be confused with despite similar notation?
A) Cross-entropy
B) Mutual information
C) Kullback-Leibler divergence
D) Conditional entropy
  • 53. What type of space does the vector give values in for joint entropy?
A) Vector space
B) Euclidean space
C) Metric space
D) Product space
  • 54. What is the formula for self-information I(pi)?
A) 1 / pi
B) -ln(pi)
C) log2(pi)
D) -log2(pi)
  • 55. What is the entropy H relative to the surprisal of all possible symbols?
A) The weighted average
B) The median
C) The geometric mean
D) The maximum value
  • 56. If 1000 bits are transmitted and each is independently and equally likely to be 0 or 1, how much information has been transmitted?
A) 1 shannon
B) No information
C) 2000 bits
D) 1000 shannons
  • 57. In what year was Claude Shannon's paper 'A Mathematical Theory of Communication' published?
A) 1939
B) 1952
C) 1960
D) 1948
  • 58. In what decade was information theory established and formalized?
A) 1950s
B) 1940s
C) 1920s
D) 1930s
  • 59. In what context was information theory initially formed?
A) Molecular biology
B) Artificial intelligence
C) Quantum computing
D) Telecommunication
  • 60. What is the entropy of a coin flip when you already know the outcome after it has landed?
A) 0.5 bits
B) 1 bit
C) Zero
D) 2 bits
  • 61. What is an example of source coding or data compression mentioned in the text?
A) ZIP files
B) DSL
C) Voyager missions
D) Compact discs
  • 62. What is an example of channel coding mentioned in the text?
A) Mobile phones
B) Artificial intelligence
C) ZIP files
D) DSL
  • 63. Whose success was crucially impacted by information theory regarding deep space missions?
A) Curiosity rover
B) Apollo missions
C) Hubble telescope
D) Voyager missions
  • 64. Which invention's success was crucially impacted by information theory?
A) Steam engine
B) Radio
C) Television
D) Compact disc
  • 65. What technology's feasibility was made possible by information theory?
A) Automobiles
B) Electric guitars
C) Airplanes
D) Mobile phones
  • 66. What modern developments were impacted by information theory alongside artificial intelligence?
A) The postal service
B) The telegraph network
C) The Internet
D) The printing press
  • 67. Which computational paradigm is listed alongside artificial intelligence as an application of information theory?
A) Quantum computing
B) Distributed computing
C) Cloud computing
D) Optical computing
  • 68. Which of the following artistic applications is mentioned as a use case for information theory?
A) Art creation
B) Architectural drafting
C) Sculpture casting
D) Oil painting restoration
  • 69. What specific musical topic is analyzed using information theory according to the text?
A) Vocal cord anatomy
B) Musical instrument design
C) Music
D) Acoustic room resonance
  • 70. Which philosophical field is listed at the end of the text as an application area of information theory?
A) Aesthetics
B) Ethics
C) Epistemology
D) Metaphysics
  • 71. Which historian rated Shannon's 1948 paper as the most important development of 1948?
A) Ralph Hartley
B) Harry Nyquist
C) James Gleick
D) Vannevar Bush
  • 72. In what year did Shannon outline some of his initial ideas in a letter to Vannevar Bush?
A) 1948
B) 1928
C) 1939
D) 1940
  • 73. To whom did Shannon write a letter outlining initial ideas of information theory in 1939?
A) James Gleick
B) Alan Turing
C) Vannevar Bush
D) Ludwig Boltzmann
  • 74. Who wrote the 1924 paper 'Certain Factors Affecting Telegraph Speed'?
A) Alan Turing
B) Claude Shannon
C) Ralph Hartley
D) Harry Nyquist
  • 75. What relation was given in Harry Nyquist's 1924 paper?
A) E = mc2
B) W = K log m
C) PV = nRT
D) H = log Sn
  • 76. What unit of information was sometimes called the hartley in honor of Ralph Hartley?
A) The bit
B) The byte
C) The baud
D) The decimal digit
  • 77. Who used similar ideas in 1940 as part of the statistical analysis of breaking German Enigma ciphers?
A) Alan Turing
B) Harry Nyquist
C) Ralph Hartley
D) Claude Shannon
  • 78. Who made important contributions connecting information-theoretic entropy and thermodynamic entropy in the 1960s?
A) James Gleick
B) Harry Nyquist
C) Rolf Landauer
D) Vannevar Bush
  • 79. What logarithmic base is the bit or shannon based on?
A) Decimal logarithm
B) Common logarithm
C) Natural logarithm
D) Binary logarithm
  • 80. What logarithmic base is the nat based on?
A) Base-two logarithm
B) Natural logarithm
C) Binary logarithm
D) Common logarithm
  • 81. What logarithmic base is the decimal digit based on?
A) Common logarithm
B) Natural logarithm
C) Binary logarithm
D) Base-e logarithm
  • 82. What does the maximum value of entropy represent?
A) The most unpredictable state
B) The lowest possible information content
C) A deterministic sequence
D) The most predictable state
  • 83. What logarithmic base measures entropy in bytes per symbol?
A) Base-256
B) Base-e
C) Base-10
D) Base-2
  • 84. What type of trial has two outcomes for the binary entropy function?
A) A logarithmic trial
B) A Bernoulli trial
C) A Markov trial
D) An equiprobable trial
  • 85. What is another name for conditional entropy?
A) Equivocation
B) Joint entropy
C) Marginal entropy
D) Mutual information
  • 86. What is another name for mutual information according to the text?
A) Pointwise mutual information
B) Transinformation
C) Log-likelihood ratio
D) Kullback-Leibler divergence
  • 87. In what field is mutual information particularly important for maximizing shared information between sent and received signals?
A) Macroeconomics
B) Thermodynamics
C) Communication
D) Quantum mechanics
  • 88. Mutual information can be expressed as the average of which divergence?
A) Jensen-Shannon divergence
B) Euclidean distance
C) Mahalanobis distance
D) Kullback-Leibler divergence
  • 89. With which statistical test is mutual information closely related in the context of contingency tables?
A) Mann-Whitney U test
B) Log-likelihood ratio test
C) Shapiro-Wilk test
D) Student's t-test
  • 90. What type of mathematical function is the KL divergence classified as?
A) Inner product
B) Semi-quasimetric
C) Linear transformation
D) Euclidean metric
  • 91. In the alternative interpretation involving Alice and Bob, who knows the true probability distribution p(x)?
A) Alice
B) Neither
C) Both
D) Bob
  • 92. According to the surprise interpretation, who will be more surprised on average upon seeing the value of X?
A) It is impossible to determine
B) Both will be equally surprised
C) Alice
D) Bob
  • 93. What type of set is X assumed to be when drawing a random number in the surprise interpretation?
A) A finite geometric set
B) An infinite continuous set
C) An empty set
D) A discrete set
  • 94. Does directed information apply to statistical physics?
A) Yes
B) Only in quantum states
C) Only in macroscopic mechanics
D) No
  • 95. What does the random process Xn consist of?
A) {X1, Y1, ..., X_n, Y_n}
B) {X1, X2, ..., X_n}
C) {Y1, Y2, ..., Y_n}
D) {X0, X1, ..., X_{n-1}}
  • 96. What do the two expressions for the rate give for stationary sources?
A) A result of zero
B) An undefined value
C) Completely different results
D) The same result
  • 97. How is the noise nature of the channel considered in the text?
A) A negligible factor in modern systems
B) A completely controllable variable
C) An inherent fixed property
D) An unpredictable random variable that changes constantly
  • 98. What is the crossover probability of a binary symmetric channel denoted as?
A) e
B) p
C) Hb
D) i
  • 99. What does a binary symmetric channel do to the input bit with probability p?
A) Duplicates the input bit
B) Erases the input bit
C) Flips the input bit
D) Delays the input bit
  • 100. What feature do many channels have in practice?
A) Memory
B) Zero capacity
C) Gaussian noise
D) Ternary input
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