CMN 150V Final Exam Complete Study
Guide with Questions and Verified
Answers | Latest Edition
1. How much do some top celebs get paid per tweet? - ANSWER $10,000 or
more
2. What are 2 complementary aspects of computational social science
Lamberson talks about? - ANSWER empirical work and computer
simulations
3. Are celebs the only people to have influence in society? - ANSWER No
4. Can just anybody be influential? - ANSWER yes
5. What was the difference between the "numerical solutions" and "analytical
solution"? - ANSWER numerical: enumerate the options and basically
count
6. analytical: use math to derive the results
7. In network analysis, a component is: - ANSWER a part of the network in
which a path can get you from a node to any other node
8. Why do you need at least one connection per node in order for the giant
component to dominate? - ANSWER everybody can have one friend (on
average) making a chain of friends
,9. Who will have more links? - ANSWER older nodes
10.What does preferential attachment mean? - ANSWER the probability of a
node to connect with new nodes corresponds to the number of existing
degrees of a node
11.What does preferential attachment say in this case? The probability that a
new node: - ANSWER connects to each one of them is equally likely
12.What doe sit mean that something is distributed according to a power law? -
ANSWER exponentially few, have exponentially much, and exponentially
many, have exponentially little
13.Why are most of my friends connected to highly connected people? -
ANSWER popular people have many connection, inevitably also including
my friends
14.When you find a high clustering coefficient, it means that people group
together in different densely connected clusters, what does that mean? -
ANSWER many people hang out with their groups with little connection to
other groups
15.What does it mean to have a small average path length? - ANSWER the
shortest path between all node sis short on average
16.A small world network is characterized by - ANSWER a small average path
length and high clustering coefficient
,17.When social scientists say that societies consist of small world networks,
what do they mean? - ANSWER people have both close connections in tight
groups and quick access to everybody
18.What has benefits but also costs? - ANSWER creating and maintaining
links with others
19.What is often meant when social scientists say that a dynamic social
configuration has become stable? - ANSWER nobody could benefit from
changing anything in the configuration
20.If there is almost no cost to create and maintain connection, what network
will evolve? - ANSWER a clique
21.If there is a very high cost to create and maintain connections, what network
will evolve? - ANSWER a network without any links
22.What trick did Lamberson use in order to track who reposted url link to a
story on Twitter? - ANSWER he tracked short url, which are unique to the
post
23.What are 'Twitter Cascades'? - ANSWER an info diffusion process on
Twitter in which a number of people make the same decision of passing
along info in a sequential fashion
24.Do all posts go viral? - ANSWER the vast majority of posts never get
retweeted, but a small fraction of links go viral
25.If something went viral, looking at it, there is a high probability that it had
been sent by an influencer: p(influencer | viral). What about p (viral |
, influencer), the probability that something goes viral, given that it was sent
by an influencer? - ANSWER low probability
26.The proposed model consists of the following: - ANSWER take a
hypothetical network, select some nodes, and simulate a contagion process
by assuming that neighboring nodes have a fixed probability of getting
infected
27.The horizontal x-axis presents: - ANSWER if a given network (of simulated
networks) has few or many links
28.What determines what spreads or not? - ANSWER density of network
29.Even though we cannot predict who is influential, why is it worthwhile for
companies to pay large amounts of money to celebs to send messages? -
ANSWER chances are that among the people reached by them, some turn
out to be influential, who will the influence others
30.What determines if an individual can trigger a cascade? - ANSWER
depends much more on the global structure of the influence network than it
does on his or her personal degree on influence
31.Can anyone start a cascade? - ANSWER the overall network permits global
cascades anyone can start one but if it doesn’t then no one can
32.What determines if someone is influential? - ANSWER depends on the
general structure of the network
Guide with Questions and Verified
Answers | Latest Edition
1. How much do some top celebs get paid per tweet? - ANSWER $10,000 or
more
2. What are 2 complementary aspects of computational social science
Lamberson talks about? - ANSWER empirical work and computer
simulations
3. Are celebs the only people to have influence in society? - ANSWER No
4. Can just anybody be influential? - ANSWER yes
5. What was the difference between the "numerical solutions" and "analytical
solution"? - ANSWER numerical: enumerate the options and basically
count
6. analytical: use math to derive the results
7. In network analysis, a component is: - ANSWER a part of the network in
which a path can get you from a node to any other node
8. Why do you need at least one connection per node in order for the giant
component to dominate? - ANSWER everybody can have one friend (on
average) making a chain of friends
,9. Who will have more links? - ANSWER older nodes
10.What does preferential attachment mean? - ANSWER the probability of a
node to connect with new nodes corresponds to the number of existing
degrees of a node
11.What does preferential attachment say in this case? The probability that a
new node: - ANSWER connects to each one of them is equally likely
12.What doe sit mean that something is distributed according to a power law? -
ANSWER exponentially few, have exponentially much, and exponentially
many, have exponentially little
13.Why are most of my friends connected to highly connected people? -
ANSWER popular people have many connection, inevitably also including
my friends
14.When you find a high clustering coefficient, it means that people group
together in different densely connected clusters, what does that mean? -
ANSWER many people hang out with their groups with little connection to
other groups
15.What does it mean to have a small average path length? - ANSWER the
shortest path between all node sis short on average
16.A small world network is characterized by - ANSWER a small average path
length and high clustering coefficient
,17.When social scientists say that societies consist of small world networks,
what do they mean? - ANSWER people have both close connections in tight
groups and quick access to everybody
18.What has benefits but also costs? - ANSWER creating and maintaining
links with others
19.What is often meant when social scientists say that a dynamic social
configuration has become stable? - ANSWER nobody could benefit from
changing anything in the configuration
20.If there is almost no cost to create and maintain connection, what network
will evolve? - ANSWER a clique
21.If there is a very high cost to create and maintain connections, what network
will evolve? - ANSWER a network without any links
22.What trick did Lamberson use in order to track who reposted url link to a
story on Twitter? - ANSWER he tracked short url, which are unique to the
post
23.What are 'Twitter Cascades'? - ANSWER an info diffusion process on
Twitter in which a number of people make the same decision of passing
along info in a sequential fashion
24.Do all posts go viral? - ANSWER the vast majority of posts never get
retweeted, but a small fraction of links go viral
25.If something went viral, looking at it, there is a high probability that it had
been sent by an influencer: p(influencer | viral). What about p (viral |
, influencer), the probability that something goes viral, given that it was sent
by an influencer? - ANSWER low probability
26.The proposed model consists of the following: - ANSWER take a
hypothetical network, select some nodes, and simulate a contagion process
by assuming that neighboring nodes have a fixed probability of getting
infected
27.The horizontal x-axis presents: - ANSWER if a given network (of simulated
networks) has few or many links
28.What determines what spreads or not? - ANSWER density of network
29.Even though we cannot predict who is influential, why is it worthwhile for
companies to pay large amounts of money to celebs to send messages? -
ANSWER chances are that among the people reached by them, some turn
out to be influential, who will the influence others
30.What determines if an individual can trigger a cascade? - ANSWER
depends much more on the global structure of the influence network than it
does on his or her personal degree on influence
31.Can anyone start a cascade? - ANSWER the overall network permits global
cascades anyone can start one but if it doesn’t then no one can
32.What determines if someone is influential? - ANSWER depends on the
general structure of the network
