Questions tagged [information]
The information tag has no usage guidance.
45
questions
3
votes
1answer
92 views
What is the intuition behind Blackwell's Equivalence Theorem on Information Structures?
Let us suppose that we have a Bayesian game where the information structure is defined to be as $P^X=\{(X,\mathcal{X},P_\theta)\}_{\theta\in\Theta}$ where a signal generated by the information ...
0
votes
0answers
40 views
Alternative to Investing.com
Do you know of any alternative to Investing.com that allows me to get historical data by editing the URL? What I mean is that in Investing.com in the historical data page I get the form data retrieved ...
0
votes
0answers
17 views
How does this definition change when we introduce some kind of information?
In Heller et al, they use the Osborne and Rubinstein formal definition for the extensive form games with public information. However, the model can work with the same definitions in case all players ...
2
votes
0answers
20 views
Social learning and diffusion
I'm looking at the literature on information dissemination within networks and came across the concept of diffusion of information in Alatas et al.,2016. The way I understood is diffusion refers to ...
0
votes
0answers
13 views
Information acquisition problem and desing of information
I am searching some details about the information acquisition problem. I want to understand what this is about and where can I find the beginning of this literature. I think this problem is some kind ...
3
votes
1answer
74 views
Mechanisms of communication in game theory
In the spirit of the previous question that I have done, here considering the paper here I am trying to make the matching definition $2.2$ here.
I will give two definitions and I would like to clarify ...
5
votes
1answer
141 views
Difficulty in understanding the notation related from probability theory with game theory
The question that I have is a little technical and it has to do with the notation and the combination between some mathamatical properties in the probability theory of information economics.
Say $\...
2
votes
0answers
31 views
Strategy definition in an extensive form game
How a (pure ) strategy is defined in an extension form game with information sets? I would like to have both an intuitive and a formal definition.
Thank you in advance!
3
votes
1answer
61 views
VCG mechanism and budget balance
I have a general question on how we state that in VCG (which doesn't balance the budget) we can't distribute the money as it will destroy incentives. I don't understand how for ex. this would affect ...
5
votes
2answers
114 views
Olivier Gossner - Secure Protocols or How Communication Generates Correlation
The paper of Olivier Gossner in Security Protocols in 1998 has some definitions that confuse me too much. I will cite here these definitions and my questions and I hope someone is familiar with these ...
6
votes
1answer
108 views
Definition of Diffusion Centrality in Banerjee et al. (2019)
I am reading "Using gossips to spread information: Theory and evidence from two Randomised Control Trials" by Banerjee, Chandrashekhar, Duflo and Jackson, where they discuss the efficacy of ...
1
vote
0answers
38 views
Payoffs in games with imperfect information can be different?
I know that a game has imperfect information if there is an nonsingleton information set, and that defines a situation on which a player can't distinguish between the nodes in the information set. ...
4
votes
3answers
142 views
Definiton of information sets in rational expecations models
I am struggling with the notion of 'information sets' in the context of rational expectation models in economics. I found interesting notes on the web (http://www2.econ.iastate.edu/tesfatsi/reintro....
2
votes
1answer
50 views
Why is a solution concept of Bayesian Persuasion a subgame perfect equilibrium?
Many papers on Bayesian persuasion adopt SPE as a solution, by arguing that the sender has no private information.
This does not make sense to me: Regardless of whether the sender has private ...
1
vote
1answer
18 views
SIR Model and Information/ Innovation Economics
The SIR Model from epidemiology is being discussed a lot recently due to the COVID19 scenario. I recently read this article about the Corona virus and what economics can offer-
https://afinetheorem....
1
vote
1answer
92 views
Premises on which the Efficient Market Hypothesis is built upon
The Efficient Market Hypothesis tells us that stocks are "fairly priced" (i.e. not systematically over- or under-valued). That is, stock prices reflect all information that is already known about them....
22
votes
9answers
7k views
What are examples for the phenomenon that more (or better) information makes everybody worse off?
More information is usually considered "better". Let's say a rational agent chooses optimally given his information on the circumstances of a particular decision problem. Then providing him with more ...
1
vote
1answer
114 views
Set of Bayes Correlated Equilibria when complete information is not available
Model
Consider a game where a decision maker (DM) has to choose action $y\in \mathcal{Y}$ possibly without being fully aware of the state of the world.
The state of the world has support $\mathcal{...
5
votes
2answers
96 views
Why is infinite recursion on the common knowledge assumption necessary?
If something is common knowledge in a game, that means that every player knows it, and every player knows that every player knows it, and so on. Are there cases where only one such level of knowing ...
0
votes
2answers
57 views
How to interpret the intersected information partition element of different actors?
In this paper, it said that given $\omega$ is the current state of the world and $P_1(\omega)$ is the unique element from the information partition $\textit{P_1}$ of actor 1 in which the player 1 is ...
0
votes
2answers
63 views
Do all prices just reflect absence of information?
In information economics, information has economic value because it allows an agent to make better decisions. For example if an agent needs to buy some good, he will benefit from knowing about the ...
0
votes
1answer
114 views
How to find change in the optimal choice with a utility function in general form?
Suppose the utility function is represented as $U(x_1,x_2;I)$, where $I$ is the level of information the consumer possesses.
How to find the change in the optimal choice of $x_1$ as price of $x_1$ ...
2
votes
0answers
34 views
How far must one reason up the belief hierarchy?
In games of imperfect information, one must reason about the belief on the state of nature, the beliefs of other player's beliefs of their beliefs, and so on. This is referred to as the belief ...
0
votes
0answers
23 views
List of countries moved to developed economies in the last 50 years
I read in Bloomberg that five countries moved to advanced economies in the last 50 years from developing economies and one of them was Singapore. Wondering what are the other four countries?
The ...
3
votes
1answer
305 views
Why is it called Bayesian Persuasion?
I'm sure most of you are familiar with the paper titled "Bayesian Persuasion" by Kamenica and Gentzkow (2011), (you can find it here).
I was wondering what are your thoughts as to why it is called "...
7
votes
1answer
110 views
Robust asymmetric information?
Bergeman and Morris (2014) explain how the concept of Bayesian Correlated equilibrium contains all the robust predictions in games of incomplete information. In particular, their question is what are ...
3
votes
1answer
378 views
Insurance and Hirshleifer effect
I am trying to understand the statmement that 'public information kills insurance opportunity' -- referred to as Hirshleifer effect. Does it (in general) lead to some undesirable outcomes? Could you ...
1
vote
2answers
2k views
Why does the incentive compatibility constraint bind (moral hazard)?
Consider a very basic model of moral hazard with two possible effort levels $e_L<e_H$ and two possible levels of output $y_L<y_H$. If the agent doesn't participate, they get utility of $\bar{u}$....
0
votes
1answer
38 views
Is there any reliable data on what % of the UK population currently earn less than £17,300 annually?
According to the Living Wage Foundation the "real living wage" in the UK is £9 an hour
Which assuming a 37 hour week & rounding to the nearest whole GBP amounts to £17,375
Formula used ((9*37)/...
4
votes
1answer
61 views
Production choices in Hayek's theory of information-bearing prices
As I understand the work of Hayek, he asserts that prices encapsulate the true societal worth of the item being sold by integrating the compound need for all of the ingredients and work which go into ...
6
votes
1answer
81 views
Is a hyperlink a kind of informational public good?
Links analysis algorithms on the web take the incoming links to a webpage as a sign of its popularity. Given this, can we consider web hyperlinks, in aggregate, as a kind of public good? I am curious ...
0
votes
1answer
42 views
Formulas or rules regarding End of Life for vehicle
Are there formulas or rules when keeping a vehicle is no longer financially beneficial?
I understand the below needs to be considered:
Every time a purchase is made, sales tax will need to be paid.
...
6
votes
2answers
243 views
Does there exist a mathematical formalization of Hayek's ideas about information and the price system?
Hayek's idea, roughly, is that individuals in aggregate have distributed knowledge about their own utility functions and about specific supply-conditions, that no single individual can oversee, and ...
6
votes
1answer
95 views
Common knowledge in model formulation and solution
Economics models usually assume that the structure of the economy is common knowledge among agents.
Mathematically, an event is common knowledge if it lies in the meet of all agents' information ...
5
votes
1answer
183 views
Higher order beliefs and coherency in game theory
I am reading about the higher order beliefs. Before getting into the formal definitions, I will define some common terminology which I will need for the formal definitions.
If $X$ and $Y$ are two ...
3
votes
1answer
83 views
Why does optimal allocation call for unlimited distribution of information?
In his seminal paper Arrow (1962) states that information should be distributed without limit if an optimal allocation is to be achieved.
Quote (p. 614-615):
The cost of transmitting a given body ...
2
votes
1answer
43 views
Risk and Information
Does anyone know of some papers that look at how risk preferences affect demand for information (or related topics about the connection between risk and Information)? I took an information economics ...
2
votes
0answers
35 views
Is maximal utility conditional on information linear in convex combinations of priors?
This is related to a Mathematica question here - https://math.stackexchange.com/q/1952779/374929
Is a (maximal expected utility) function of the form
$U(\mu, X) \equiv \int_\Theta \int_\mathcal{X} \...
3
votes
2answers
172 views
Does the government have a role to play in certifying people's abilities for the labor market?
The nature of information often makes it look like a public good. Is this the case for certification of peoples abilities? Is there a role the government could play in certifying people's abilities? ...
1
vote
2answers
420 views
How does monopoly affect the informational role of price?
It is said in the textbook "Intermediate Microeconomics a Modern Approach" by Hal Varian that monopoly affects the informational role of price. What's the mechanism?
6
votes
2answers
60 views
Proof that the diff-in-diff (wrt sample size) of the expectation of a first-order statistic is positive (Stigler 1961)
I'm trying to prove a claim made in Stigler (1961), "The Economics of Information." This claim has to do with showing that the marginal benefit
of making an additional search (e.g., searching an ...
5
votes
1answer
72 views
Evidence that open source production processes increase efficiency and/or consumer surplus?
Is there peer reviewed evidence that open source production processes increase efficiency and/or consumer surplus? It seems that the first theorem of welfare economics requires complete markets which ...
2
votes
2answers
74 views
Effect of information on stock indices
The rules for including a stock in indices such as S&P 500 are common knowledge, so everyone can know when e.g. company B is going to enter the index instead of company A. Since ETFs and mutual ...
5
votes
4answers
756 views
The Backward Bending Supply Curve, Asymmetric Information, and Monopoly
This recent question about when monopoly is undesirable made me curious about when monopoly is actually desirable? I was reminded of an argument for the efficiency of monopolies when moral hazard ...
8
votes
3answers
695 views
What are some theoretical explanations for deviations from the efficient market hypothesis?
According (the semi-strong form of) the efficient market hypothesis, the price of an asset should reflect all publicly available information about the 'fundamental value' of that asset. The reasoning ...
