---
_id: '2901641'
abstract:
- lang: eng
text: "An agent needs to determine a belief over potential outcomes for a new problem
based on past\r\nobservations gathered in her database (memory). There is a rich
literature in cognitive science\r\nshowing that human minds process and order
information in categories, rather than piece by piece.\r\nWe assume that agents
are naturally equipped (by evolution) with a efficient heuristic intuition\r\nhow
to categorize. Depending on how available categorized information is activated
and processed,\r\nwe axiomatize two different versions of belief formation relying
on categorizations. In one approach\r\nan agent relies only on the estimates induced
by the single pieces of information contained in so\r\ncalled target categories
that are activated by the problem for which a belief is asked for. Another\r\napproach
forms a prototype based belief by averaging over all category-based estimates
(so called\r\nprototypical estimates) corresponding to each category in the database.
In both belief formations\r\nthe involved estimates are weighted according to
their similarity or relevance to the new problem.\r\nWe impose normatively desirable
and natural properties on the categorization of databases. On the\r\nstage of
belief formation our axioms specify the relationship between different categorized
databases\r\nand their corresponding induced (category or prototype based) beliefs.
The axiomatization of a\r\nbelief formation in Billot et al. (Econometrica, 2005)
is covered for the situation of a (trivial)\r\ncategorization of a database that
consists only of singleton categories and agents basically do not\r\nprocess information
categorical."
author:
- first_name: Jörg
full_name: Bleile, Jörg
id: '22693411'
last_name: Bleile
citation:
ama: 'Bleile J. *Categorization based Belief formations*. Center for Mathematical
Economics Working Papers. Vol 519. Bielefeld: Center for Mathematical Economics;
2014.'
angewandte-chemie: J. Bleile, *Categorization based Belief formations*,
Center For Mathematical Economics, Bielefeld, **2014**.
apa: 'Bleile, J. (2014). *Categorization based Belief formations* (Center
for Mathematical Economics Working Papers, 519). Bielefeld: Center for Mathematical
Economics.'
apa_indent: 'Bleile,
J. (2014). *Categorization based Belief formations* (Center for Mathematical
Economics Working Papers, 519). Bielefeld: Center for Mathematical Economics.

'
bio1: 'Bleile J (2014)

*Categorization based Belief formations*. Center
for Mathematical Economics Working Papers; 519.

Bielefeld: Center for Mathematical
Economics.'
chicago: 'Bleile,
Jörg. 2014. *Categorization based Belief formations*. Vol. 519. Center
for Mathematical Economics Working Papers. Bielefeld: Center for Mathematical
Economics.

'
default: 'Bleile J (2014) Center for Mathematical Economics Working Papers; 519.

Bielefeld: Center for Mathematical Economics.'
dgps: 'Bleile,
J. (2014). *Categorization based Belief formations* (Center for Mathematical
Economics Working Papers). Bielefeld: Center for Mathematical Economics.

'
frontiers: 'Bleile, J. (2014). Categorization based Belief formations. *Center
for Mathematical Economics Working Papers*, 519, Bielefeld: Center for Mathematical
Economics.'
harvard1: 'Bleile, J., 2014. *Categorization based Belief formations*, Center
for Mathematical Economics Working Papers, no.519, Bielefeld: Center for Mathematical
Economics.'
ieee: ' J. Bleile, *Categorization based Belief formations*, Center for Mathematical
Economics Working Papers, vol. 519, Bielefeld: Center for Mathematical Economics,
2014.'
lncs: ' Bleile, J.: Categorization based Belief formations. Center for Mathematical
Economics Working Papers, 519. Center for Mathematical Economics, Bielefeld (2014).'
mla: 'Bleile, Jörg. *Categorization based Belief formations*. Bielefeld:
Center for Mathematical Economics, 2014. Center for Mathematical Economics Working
Papers. 519.'
wels: 'Bleile, J. (2014): Categorization based Belief formations. Bielefeld: Center
for Mathematical Economics.'
date_created: 2016-03-15T13:03:15Z
date_updated: 2018-07-24T13:01:29Z
ddc:
- '330'
department:
- _id: '10053'
file:
- access_level: open_access
checksum: 4fadbf80f5e277a91742b748046ab318
content_type: application/x-download
creator: weingarten
date_created: 2016-04-14T14:04:42Z
date_updated: 2019-09-06T09:18:36Z
file_id: '2902674'
file_name: IMW_working_paper_519.pdf
file_size: '501399'
relation: main_file
file_date_updated: 2019-09-06T09:18:36Z
has_accepted_license: '1'
intvolume: ' 519'
jel:
- D81
- C83
keyword:
- Belief formation
- prior
- case-based reasoning
- similarity
- categorization
- prototype
language:
- iso: eng
locked: '1'
oa: 1
page: '41'
place: Bielefeld
publication_identifier:
issn:
- 0931-6558
publication_status: published
publisher: Center for Mathematical Economics
series_title: Center for Mathematical Economics Working Papers
status: public
title: Categorization based Belief formations
type: working_paper
urn: urn:nbn:de:0070-pub-29016418
volume: 519
year: '2014'
...