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