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