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[交流] 关于turtle的使用问题

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发表于 2008-3-14 16:14:39 | 显示全部楼层 |阅读模式
我将customer设为 turtles-own,初始值赋为-1,为的是当turtle遇到同伴时就将其中的一个turtle认为自己的customer,然后进行交易,如下:; |( J8 v" Z: L, e% s  s% g% Q  S+ I
to do-business / W, K' v8 o$ m; h
rt random 360- d2 b: J: t8 M9 l& \
fd 1& Y) ?& L1 F1 c  F9 o5 Q0 ?
ifelse(other turtles-here != nobody)[3 D- i# D. r. J9 _
   set customer one-of other turtles-here ;;这样一来,customer不代表了一个turtle吗?但在运行时出现了问题.; b6 `5 h( Q0 h$ p. J4 Z
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
4 e1 B) r! g" E1 ~% _   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer$ a% m$ M- g7 N0 C0 a& V" n. `! S
   set [trade-record-one-len] of self length [trade-record-one] of self  o. D% z& l; ^9 Q  S
   set trade-record-current( list (timer) (random money-upper-limit))
- A" ?: M' W+ Q3 R5 w* _
# I" C/ J; B1 {! {2 W问题的提示如下:
3 v1 R- B% j% A7 v& F. U+ S7 q( i: |1 p0 P$ U6 a+ o" {
error while turtle 50 running OF in procedure DO-BUSINESS
" q6 ?% i/ J! r+ K$ ?; L2 S  called by procedure GO8 {4 t7 B: c4 w9 L
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
  U+ O( @, d5 ~& E* [
(halted running of go)
( L2 ?5 H, j2 X  D* m+ R
% E# {; m0 A8 z9 {1 M4 t这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~
( W8 w1 O* E; r# t5 u5 L另外,我用([who] of customer)来获取turtle的编号的方法对的吗?如  set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    中.

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发表于 2008-3-17 17:34:20 | 显示全部楼层

资料不全

你把你的所有程序传上来我看一下,估计不是大问题。(南京大学)
 楼主| 发表于 2008-3-18 13:10:54 | 显示全部楼层
你好,这是我现在正在写着的程序,以上问题就在其中,请多指教7 i2 ]" \" f+ P. h  S+ ^4 |
globals[3 _1 Q. E# J8 _% b. {3 h6 Q) P$ x" ^. U
xmax* }1 N8 o! b: N+ L2 f0 ~
ymax
+ A3 k. J$ r4 m, X) K% G) Mglobal-reputation-list
& S) g' a/ V' @( A, ~  m& Y+ L3 P( l  J7 J8 a
;;
每一个turtle的全局声誉都存在此LIST
  T/ e7 r* c0 G# p- o. ^9 v& ]credibility-list
# F: o) b, D2 s;;
每一个turtle的评价可信度
1 T4 c+ N2 S4 C/ I. {. W# Vhonest-service
' h+ n. A; m+ A' a7 O# H% H# F( E$ ^unhonest-service# j0 z% x  W2 P& u9 G  P
oscillation
- K% B& l4 I! ?1 v+ b2 K7 T$ krand-dynamic, _( l4 d9 Y/ ]
]
% Y, D& M- E; b  X. Y' c& t0 H/ c2 y
turtles-own[" S! r. o5 \9 e0 r  z
trade-record-all
  F* P" d8 e' Y) t;;a list of lists,
trade-record-one组成' D1 Y% `- _; ?8 R6 j: L; H5 [
trade-record-one: U  }5 Q9 ~8 p& l& b
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
0 M+ t9 W! Q. Z) J! d: r1 p+ h% K  ?% ~! Y0 i! i8 _
;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]
+ s& I2 O+ U& u' P1 `' `" Ztrade-record-current;;list,trade-record-one中的这个list,作为暂存用,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]1 C) C( z) l& `( O' o' d1 _2 L
credibility-receive ;;list,他每个turtle还需要有一个存储其他turtle对其评价质量进行评价的list, t- L6 \; Y8 C  b8 }2 A' u5 a
neighbor-total
- w, f, r* V) S1 F/ N;;
记录该turtle的邻居节点的数目/ y. v* i. E) Q) V; {) w6 f% R; P/ B
trade-time/ ?5 r! c& K( P# |8 c
;;
当前发生交易的turtle的交易时间" g& X+ J- V2 e
appraise-give
/ @1 r9 e/ V# O- j;;
当前发生交易时给出的评价
% L" C3 j, A# j" U* n0 [' Eappraise-receive
3 H* H1 b( Z3 C6 Y;;
当前发生交易时收到的评价0 W, P4 @9 K" R
appraise-time* |: a9 x: \" n  U
;;
当前发生交易时的评价时间
# M! e8 U, a* C3 z- L8 x, O4 Hlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉" @; ]; W( g$ y) d$ G# G
trade-times-total
$ i; s$ f) U/ U& z;;
与当前turtle的交易总次数. _) P, f9 a6 [) g9 c
trade-money-total+ D/ z5 v+ \1 D' ^" C
;;
与当前turtle的交易总金额5 }6 h3 W- ^' P' _4 p
local-reputation, N: Z+ a6 S- p: h# d
global-reputation
2 q* @1 e- R& w. bcredibility
+ A; C0 @# T$ |" i/ r- V- x/ \" I;;
评价可信度,每次交易后都需要更新
$ o; _2 O* R# @' k# `credibility-all
/ N+ z& P( ~) A6 n1 n- ~- S;;a list of lists,
credibility-one组成。[[1j的评价质量的评价][2j的评价质量的评价]……[ij的评价质量的评价]……],其中一共有people项,根据6 z) D& Y! x, ]) o& T

8 j- P6 M5 n) X;;turtle
的编号对号入座,对于其自身的编号,在计算用到的时候再进行剔减,初始值均为0.5
( _) H& D- }0 G' K3 `% E/ A6 Lcredibility-one5 p) ]: z# i2 ?( P3 k. D2 b  y
;;a list [i
j1的评价的质量评价,ij2的评价的质量评价……],其中一共有people
# ^2 E+ A2 U8 Qglobal-proportion
; w9 n. K% r. S! [% w2 k% kcustomer; t* @7 q! U# F# O. ^6 K
customer-no
% [/ r& P, a$ V4 ptrust-ok# [. o4 c: \/ c9 I* Y
trade-record-one-len;;trade-record-one的长度
; D+ @* h" h: H% M! ?]
) e2 X% I: g  r% U
' |2 D6 c0 s' h9 y7 h;;setup procedure
$ R# ~' i4 e$ c/ c  m7 g2 G" S0 i+ U
to setup
% b, Y  F7 ?( L/ ?
% n; _- @6 {- X' N( }: J, z: Hca

3 G/ e: Z* H& l. z1 s
5 ]8 n9 [4 ~% g! K5 x# Linitialize-settings
% B2 A1 }) ?2 W4 R

* N! D+ N/ ~3 N; q  a: Ecrt people [setup-turtles]
' s$ [4 c  k9 [
7 e3 X7 z4 n" m( `6 {2 A, X
reset-timer

+ o* c5 l6 U4 |, F  [
) v6 X! j7 T/ ?$ W# wpoll-class

0 C- z6 Q1 |0 u: e/ x% e, [9 V, _# V5 ?
setup-plots
- {* H+ F- C+ v9 b% r$ M

( Q! c0 l) E& \: ydo-plots

8 A, s  {. P0 y6 jend
. Y" B2 h7 D7 i9 F. R" x) M6 p( J/ i
to initialize-settings
* k, J4 w* p2 r4 m1 c  @
' P2 R- f( d0 Vset global-reputation-list []

/ {8 Y* z* ~7 w# K7 z* {6 }: N, S  P+ {3 A$ X: l- P# w, w
set credibility-list n-values people [0.5]
' J# N; `9 [. X! l

, M/ n8 K: W! X: zset honest-service 0

  n7 e; x& x: L4 U) C  x5 D  A: P3 O5 y* a
set unhonest-service 0
+ h6 n! c& Z- L7 \6 x

8 [0 K# x9 |" i- Uset oscillation 0
1 P; p' C, s, O$ Q3 f2 b

, `. Y% u, Y, M) p1 _- lset rand-dynamic 0
! @* i/ l% \: y, G
end
9 P/ }9 c# k# U; z* T( ]- m3 y
7 b; A# X/ v+ z# Q5 P$ d6 tto setup-turtles
. r( @) c. g3 }+ H, t% Sset shape "person"9 \8 k& ^1 W" ^& Q9 k# [
setxy random-xcor random-ycor' f8 v/ Y: F" ?
set trade-record-one []
& m# o' F! J# t; c) j7 d; V
) Q! D/ m# t: l  T% F
set trade-record-all n-values people [(list (? + 1) 0 0)]
; s4 f% d# O! U- T9 ?

' z8 S+ I) x* @$ O0 j0 Sset trade-record-current []9 Q& j  p, A9 l0 S
set credibility-receive []% [( X; h$ n$ ~' R5 o. c2 s' x, T
set local-reputation 0.5* J/ u( B. S4 L
set neighbor-total 0
3 N4 `4 J4 L* ~5 I) F: M+ `set trade-times-total 0( M5 h  l5 y# }; Z5 L7 J/ \% K
set trade-money-total 0
7 O; _: |2 O' d9 B8 k$ j- Fset customer nobody
& Y2 |" s4 r; H3 b3 Iset credibility-all n-values people [creat-credibility]
% ~0 i3 _! T3 q- C, [4 M: Zset credibility n-values people [-1]; ?. M$ S" T# }% K  |' F
get-color
: }6 D& h+ p& v, L4 B% @0 E
' r) u, I6 |1 F8 m* H: _9 S# R3 Q2 I
end4 g3 w: N! l/ N' P! O* s
1 ^+ I) R8 w( h
to-report creat-credibility/ E/ `, L. J/ i2 [% w2 j4 F! u
report n-values people [0.5]6 K* j# O; l4 |! H
end
; m1 n1 T5 R0 s% z/ U# ]- P
# t9 O5 P" e& Kto setup-plots
4 H: }( t" P  q* N; |
( G8 K: Q1 H; [9 f- ]% |5 Vset xmax 30
9 o& o6 o6 C# Q9 N& k/ R

6 t% u8 t, N* d' ?* eset ymax 1.0
2 {  _4 }. K4 V/ O+ x) j
* `9 `2 z: H% ~
clear-all-plots

/ V) |( w2 c5 C) G& E
$ [+ E8 \: U2 t/ l8 @setup-plot1
2 J0 P* Y; C) J( T8 v/ X

7 w8 M: f) e2 h, Msetup-plot2
3 j  h! [% O" ~" O+ V
. a4 V1 a3 J7 r& J: T
setup-plot3
/ p2 @2 Y# A$ Q4 q
end% [/ q  ?9 G4 K( E4 B* z) Y/ q
' f. }2 P* C+ H5 u3 a
;;run time procedures
% X0 L* ?: i, g/ O8 ^+ h* t! x; T
to go$ M. v# a6 R! W4 v
# o& V9 e2 ?' I# e
ask turtles [do-business]

* {# _' a, E9 \" `" F2 l! O4 D- @end
$ @( |2 ~- e/ P  `% P0 p
' f6 l5 V' K7 q3 t- ]8 fto do-business ( C+ p' U) n; O

% m# j  s/ w8 r  ?5 |
! x; n6 f6 q9 U" M4 drt random 360
" o* g, }* _7 S0 t1 K7 W
8 l( _% ]$ H6 W. S
fd 1
+ K! ]: a' |5 y$ ?3 \! R& B

) p3 Y& y, L" y* I  L. k! Nifelse(other turtles-here != nobody)[

) c  a0 L6 p% ?* r. z* Q
- j: l+ U3 y9 r4 H; d- ]set customer one-of other turtles-here
8 X% p2 ?  E; K1 U- r: |

- ]6 E( B# R* D1 u/ |, m;; set [customer] of customer myself

- ]2 L% U) a0 K/ `& U4 C# l. _" d
* h  A9 u& m+ p+ ~set [trade-record-one] of self item (([who] of customer) - 1)
1 x( [8 j4 q0 u4 G5 q[trade-record-all]of self) |0 V1 t9 X* t9 f! q
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

- {! Y+ |  ]& j
% A+ n% ]5 k- X) \2 @" eset [trade-record-one] of customer item (([who] of self) - 1)/ w0 n8 w5 x- w
[trade-record-all]of customer
5 S/ E; F2 `$ O% @7 p# [/ I! s

3 V7 [+ E7 m, Sset [trade-record-one-len] of self length [trade-record-one] of self
; l2 k* ^" i$ e- F/ ?8 }
5 ^2 A$ u( G: c+ I
set trade-record-current( list (timer) (random money-upper-limit))

2 [4 c7 U) e' u: c! L( N- A
0 g3 ]1 I) \* r' \1 ]  S( o% cask self [do-trust]  _$ k( _! {" k# k: S% [
;;
先求ij的信任度, ?7 o/ |2 {2 R: E

8 L/ c, z: s( i. l' {- D9 oif ([trust-ok] of self)
# }3 l; w( u" ?7 z;;
根据ij的信任度来决定是否与j进行交易[  q1 W0 x/ T# b; o1 E" i" j
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
) e/ c' ?6 p( J& L6 K( ?3 X* w2 s! Y5 w
[

/ z# E9 V/ t7 Q4 r) y# s, @8 A! U) ^
do-trade

& V: F% J+ g4 ]
( _7 C9 \! ]2 f( gupdate-credibility-ijl

+ n+ G: v" y, ]9 l! ]! l/ n
+ u6 R, X8 y# K0 G4 i) J  x3 Vupdate-credibility-list
8 \) [$ a. a' ~- n3 n/ I
) k' K# S$ O) x* c( x

& h* a7 k. c4 G9 Jupdate-global-reputation-list

" d% B0 N6 S: E8 u6 }* g1 D4 e
# r, Q1 V$ o* g/ L" N1 g0 {poll-class
% _+ M: F( N! \3 T

' b; `3 [4 P" b. n! Zget-color
" R1 K3 z  L$ P

* j' F( p  b4 k  m9 q& z]]
* ?9 i% i1 w4 K. C" W9 P
% W# @, P7 F8 Y" U;;
如果所得的信任度满足条件,则进行交易% ?% L& t/ o+ }* u* b2 b& i
9 C0 ]# S7 Y- o/ y+ a
[
/ {% c* I+ r- I

$ p5 B/ w% Y9 r8 j! v$ Krt random 360
7 h$ t% a, W" Z6 B

' I9 ?% [9 x0 jfd 1
( P1 D% G% J, A( K9 Q0 e9 q- E8 S

7 g; P, b5 |7 l2 ^( F]

6 R6 s7 d- h+ F% D, Y& d; r* Z; g% k# [+ E4 L6 x
end
8 M% {( Y! a: \& T
* _( {) V' e4 ]3 g2 J% W
to do-trust
' W/ _3 E/ S5 r7 V0 \# E9 k5 S& U# Vset trust-ok False
5 ~: L0 R& Z! r% d0 f1 O% h, ~8 y+ V

8 v3 C2 t/ F( U0 T- F* l$ Rlet max-trade-times 0& M. c+ ^3 H& `5 Y7 J/ D5 m$ s- K
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
6 `% k: X5 U5 Q$ t/ o5 @let max-trade-money 0$ Z& U, H# O+ c, N
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]1 W/ J$ f; j8 h) S) C, _; x. g9 S
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))* a4 u! f. e; u6 U  x8 V- J- u7 g
+ T  p+ m8 u7 a" G; g

) B* @* O1 C3 d! i9 k# Oget-global-proportion
- p# \5 ?+ y# }# z/ vlet trust-value& v9 I# p. a2 E/ V
local-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
! ?; _) b; I, J2 p: K2 `4 ?
if(trust-value > trade-trust-value)
5 z$ G0 N) n% H6 A0 }[set trust-ok true]: ~8 h' R/ x  e! Q* E  a
end' \5 {0 o  X2 E  F3 Z
' _* ^) g# S" o6 [6 t+ Q. H
to get-global-proportion% W  [* p: `4 J
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)- R$ T( Y1 X! i
[set global-proportion 0]
) o7 ?1 o9 k7 ~3 K0 f6 ^[let i 0; n. q$ o9 H8 U
let sum-money 0
# b1 D) o1 [! dwhile[ i < people]) W* R- ^& ^9 q7 v, b4 x8 A
[
: f% J. o4 f* @* t1 A( C% Lif( length (item i0 b4 _: {4 w4 s, Y; @% [4 s0 [/ K/ ~9 J& b+ b
[trade-record-all] of customer) > 3 )
9 ~) _# G. O% l1 o% u# C3 ~
[. t; }8 _* W6 K6 b! o; W# Q
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))7 e1 X; G  n3 Q
]: F- `9 a- U( a" K' P
]3 i# W2 d" `8 K$ P* \9 ?" `
let j 0
" ?# R) m( I4 Elet note 01 K' X) O. v2 U. y9 `7 v7 y
while[ j < people]0 w2 K( e8 F: I# |
[- J# x; L6 |" }" q
if( length (item i
) x4 c1 \7 T; o! ]' k[trade-record-all] of customer) > 3 )

  `( `' v5 j3 M" b4 Z[; d8 L; n$ h3 K' G; J' j
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)6 m3 Z; S% g' n  e- x. G
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]- l! f3 Z( p' K7 g# e
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
6 D, C8 B# I0 c4 D( I8 Z/ q]3 I6 n5 P. y! x, _
]
- P# K& a# r) G* e3 n1 Nset global-proportion note
6 w4 t) M0 N" }$ Z: S]
3 @& ~9 c% G5 ]4 B: C' dend
; s' c  ?& ]3 {  u2 g* y. W; J, c
* W( M- {/ r, d% R# f* I. nto do-trade$ p. f; ]4 g5 p% f, l6 ]. w
;;
这个过程实际上是给双方作出评价的过程
/ W- C. T; Y' B5 i5 b! cset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价$ c, O, j  L8 S9 ?6 i0 D
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价' @& D( n: z7 k2 F6 l, M
set trade-record-current lput(timer) trade-record-current9 N' C6 j+ I- j
;;
评价时间
" U6 {' L6 B- ?# ^ask myself [# X$ f& K) M4 ?+ L* p2 T$ U. ?
update-local-reputation
2 L' C4 F/ G: G" Uset trade-record-current lput([local-reputation] of myself) trade-record-current
. @- n1 g+ r# p3 T]
: I9 D3 Z5 z; P- Dset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
, f2 L& g' I6 \;;
将此次交易的记录加入到trade-record-one
7 Y/ K  V% }, i: o# s& J( {/ p5 Wset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
" U- J, Z* Z! t# L4 `( ^let note (item 2 trade-record-current )* `. K3 i3 C$ l# Z/ D
set trade-record-current6 J1 ]: ^1 I6 K' c
(replace-item 2 trade-record-current (item 3 trade-record-current))

3 B9 z- ^6 q; A6 ^set trade-record-current
2 q* }  G+ f3 T0 t9 h$ r, \9 m(replace-item 3 trade-record-current note)# @1 p; k3 Y. t# T! w8 _

- a% W0 b: _* s% e" w/ ]
0 z7 i8 e) K) O, `4 ]
ask customer [
4 V* b; J# v: B( L5 v3 c1 }- Wupdate-local-reputation5 C0 r7 q7 k( d8 b5 o
set trade-record-current
% N; w0 s- r3 C! e  C" K  c) s(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
$ y2 z! R! t2 N/ y8 q7 u
]! {; j& f8 ?  q7 z! O8 }
& P/ B* j2 a' k- c; L1 f+ H1 P, e

1 {5 E  f% I8 ~' A, j4 jset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
9 H2 g3 O& _/ \6 n
& j/ X0 {1 ]4 s# j- Z% n% }
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
- \( }' X% Z; |/ c;;
将此次交易的记录加入到customertrade-record-all' Y4 F/ r2 d4 d' t
end
/ r2 v! u! u/ M. v( N2 Q* L9 I& C7 [7 Y5 u4 Q
to update-local-reputation4 s1 _& w' A8 u9 L( y
set [trade-record-one-len] of myself length [trade-record-one] of myself3 z* D% a- X( g

- {0 Q# j4 O2 u2 z8 o% q8 F( f: v2 a4 i: p5 e* B; a0 q
;;if [trade-record-one-len] of myself > 3
, s: K' c/ i. h8 ~$ T/ `
update-neighbor-total
! U1 S' }- v  L. J% _2 d$ B0 D;;
更新邻居节点的数目,在此进行
8 E/ ~0 N4 z7 E) T' wlet i 3( e9 h/ L1 y+ c+ A0 X& f6 z
let sum-time 0
. i' r5 O0 `, e+ jwhile[i < [trade-record-one-len] of myself]! J* F. ?' @/ g! s( \9 f5 t
[! b; |* X* Q/ }0 j' _1 N; e
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
- a8 T- d; _2 E* k' z) }6 Jset i
7 D( s5 H% o9 @; {+ K0 X( i + 1)

" D. Q4 Y8 a' s* y/ V/ Y" V]) n" _& N& E! h, X
let j 3/ R; M* T7 @; I- c; [: c3 V$ w
let sum-money 0( X3 y/ ^( e* Y" N: `3 \* _" }: b
while[j < [trade-record-one-len] of myself]
$ C3 n' t- m& [9 T$ l[+ t* O( t* K: Q3 K0 Z0 B
set sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
' g- X  ]% M  K6 wset j
7 B2 K7 }: u' f4 c" f4 L' S( j + 1)
; l: m" ]( T0 |: C% M4 z. t& [3 i3 w
]
: o1 V% m( N/ @9 Hlet k 3- d2 \& B, }) k3 V7 [# ?
let power 0
8 [5 |1 Q/ d$ K9 glet local 0) K3 N2 e+ }: L
while [k <[trade-record-one-len] of myself]
0 C* p: D3 m% O0 B, H[
+ }+ |/ w5 P+ l& o6 L- l: Q# C6 ]! fset local (local + (item 0 (item k [trade-record-one] of myself)) * (item 1 (item k [trade-record-one] of myself)) * (item 2 (item k [trade-record-one] of myself)) / sum-time / sum-money)
6 @9 r/ C6 ~: N' qset k (k + 1): ]0 [! U1 M% x% p
]
: z& U+ v7 ?5 Q( Aset [local-reputation] of myself (local)! p) D* ^( H  J
end( H0 ?* M6 K; c0 J: P2 ^: K6 Y
& z6 j1 b% }1 q# t1 l
to update-neighbor-total
9 F) [" K% e' H: w  g* w4 Y) F( [& c- W3 K" u' X9 c. |
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
, R4 m0 O& N% m' A) [4 |% }4 n- X4 O/ n  j
6 `1 j* d# g; v- o; K
end
. X2 q3 s: A& D3 G
& [2 s0 o7 j. }5 k& y' m: rto update-credibility-ijl
. x  k9 U, [! b, F8 H# Q( H) Z$ O, W4 \$ z
;;
思路:每一次,当一个turtle发和另一个turtle成功发生交易作出了评价之后,就去搜索本次交易对象的邻居节点,对这些邻居节点的评价质量作出评价。
2 d, K- k4 N( m7 v6 e6 h* plet l 0: j( |/ ]; T& q# k
while[ l < people ]
2 y3 a. a; c  M;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价3 q8 X( L  _+ A; K
[, p. U7 A9 e- Y& I+ q
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
6 E" H9 ]( W  M* Z3 G# w1 gif (trade-record-one-j-l-len > 3)' ]& ^8 _% T( u" i
[let trade-record-one-j-l item l ([trade-record-all] of customer);;暂存那个评价质量正在被评价的turtle j的与ltrade-record-one6 b8 h* t+ [& {# H
let i 3! f8 ^! l# g. {! c' T( E7 o
let sum-time 00 J* p1 M# T% m! t3 E/ W) ^
while[i < trade-record-one-len]/ b: r6 G- }2 ]1 I" i& x1 x7 F
[
; d" o5 z3 S0 i' n- i" D/ Fset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
: b: h' K4 I5 S# C5 s' Hset i! q$ W3 P# }! G4 q9 W; U9 e& o0 H
( i + 1)
2 Y: a; d$ ^+ Z+ ~: h; [5 k4 g3 ]: f
]2 H: s1 w# M) [" m8 [
let credibility-i-j-l 0! ^! e/ n% \7 v5 X
;;i
评价(jjl的评价)
1 ?2 s4 A$ @# @let j 3
, C+ }2 H+ I) {/ ^let k 4% k/ E; V( C/ F3 x
while[j < trade-record-one-len]' S+ Z2 W6 }$ T( X6 i
[7 ^* o8 V8 b' t; C6 M2 ?3 o  l
while [((item 4(item j [trade-record-one] of myself)) - item 4(item k trade-record-one-j-l)) > 0][set k (k + 1)];;首先要寻找在ik次给l评价的这一时刻,l相对于j的局部声誉
0 j3 x4 d) h8 Jset credibility-i-j-l ( credibility-i-j-l + (item 4(item j [trade-record-one] of myself)) * (1 - abs ((item 3(item j [trade-record-one] of myself)) - item 5 (item k trade-record-one-j-l) ) )/ sum-time)
/ a$ \+ g' j2 }4 K; T" |set j
: n6 o1 w5 x+ C6 y. a* \8 b( j + 1)

/ I" [/ M+ R' g$ d]; ~& X# e" ?  {% o
set [credibility-all] of turtle l (replace-item ([who] of myself - 1)([credibility-all] of turtle l)(replace-item ([who] of customer - 1) (item ([who] of myself - 1) [credibility-all] of turtle l) credibility-i-j-l ))
( a  b7 E/ e4 ^# N/ g
2 O0 \/ m  Z/ C$ \. ^& N7 i& z' ?' s/ `

- _! A$ s& k2 Glet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))' T( p0 o2 t" v, o
;;
及时更新il的评价质量的评价
. y- z9 S7 s+ C# {5 C3 z9 C" i  k' \set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
) |5 ]3 R2 b! x' y( Q. K9 qset l (l + 1)6 w, O: J9 o1 c# j1 s- a
]
* f0 m0 s6 N( m$ W9 {. j% Tend) f8 x/ D" G# Y; w& H
, s# l- O# _' e$ X6 {, L- }# H
to update-credibility-list+ u. k, l  q3 C" `; S
let i 01 j( S$ u- E" I# ~# @
while[i < people]0 x9 V5 K7 ^* F% Y
[5 B9 n; n  x( S, I3 ]* ]
let j 0
5 X9 Z* {' I9 b6 a% Blet note 0
8 l1 [: Y( Q" y5 I/ p  f3 {! `let k 04 `" }# n, ?# d
;;
计作出过评价的邻居节点的数目  e, [  M; t* a; f6 v5 A5 d. c
while[j < people]
6 V5 _( K: Y# |( W, g1 w4 w" {[
4 R# k  P2 q* [- Q  S7 H7 Cif (item j( [credibility] of turtle (i + 1)) != -1)
, J1 Z, j, [# G7 s4 |- p;;
判断是否给本turtle的评价质量做出过评价的节点
5 r" a! x, v; I1 I. n) o9 k[set note (note + item j ([credibility]of turtle (i + 1)))
  {# O! m/ P% i6 C  K- \  Y4 a;;*(exp (-(people - 2)))/(people - 2))]
6 y8 ]7 y, @1 g: h: R
set k (k + 1)
: c+ |; Z2 P% y: i4 M]) \) C( U! Z/ F7 r( y( @- q7 v7 m
set j (j + 1), |+ V9 Z5 Q2 N! a4 M. I; o# N
]: R# o# p" x* q' @
set note (note *(exp (- (1 / k)))/ k). m( g  L6 ]* I- @$ U
set credibility-list (replace-item i credibility-list note)
$ x# i/ f- Z. a, C8 h! K" r% mset i (i + 1)1 ~+ J, O0 L" a/ b0 l
]
/ i( ?: T+ _0 O/ f6 f% bend8 @7 F# p* a0 `* `  V! p

; \; s* a3 b5 M+ d, }to update-global-reputation-list3 p3 K" ^5 E8 y- C) Y  O
let j 0
- {& g% \. e. c2 n. l3 `* o7 G. \% gwhile[j < people]8 o0 Y# T  s  x
[
7 h) v8 G9 Y% Z( A  I# jlet new 04 x6 \- q3 X9 m- _9 i3 `0 u
;;
暂存新的一个全局声誉( Q- m% c/ O( }& K
let i 0* ^* u4 e8 P% Y
let sum-money 0  ^( v3 I, G, u7 P  C
let credibility-money 0' H: t& D1 Z' h: F
while [i < people]
' n% b/ V. W6 m) k5 z[) Q1 @. \" e6 r( ^
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
$ ?5 V$ c" j, L; F6 P1 G# Bset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
# Y7 k2 @& [- Oset i (i + 1)
* y0 n$ `2 K* z: K# t" h; V]
$ X: x) e& z  Z! W2 rlet k 0
& W3 P7 y! F: N, |! ylet new1 0
: p" w& V% g8 e/ bwhile [k < people]& `8 ^& n$ Z& z: F. E
[
: i7 g- R" i- D2 V9 q; Lset new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money)
4 g. V# o: i7 {9 q/ c; R# ]6 Tset k (k + 1)# v( f% d' L3 f$ s/ U- U
]
1 V) K! m4 W8 c8 K$ Q: gset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
7 F/ D7 d& A" v9 |$ Mset global-reputation-list (replace-item j global-reputation-list new)0 F* C) P8 ]+ U4 H5 \& d5 ?- \
set j (j + 1)
# n$ T: s8 z! Y/ y) Y]! p6 I4 b; o4 y9 V4 `0 B
end
* B8 J, [  ]; V5 j, |' O& Q& i3 Z+ u$ ?5 g/ K0 U' N* N5 Z4 q0 ]. h' ~
* q6 U9 v* d% U( M+ P# C+ v2 w' E$ T0 d) {

, U. E  w9 G* o7 V* F( Cto get-color
  A' \% ]* q7 F, E6 r/ Y+ n' F- A4 m
- N' O7 u+ R8 N8 D$ R# Rset color blue
1 n7 _8 \3 B0 |* M3 h. V
end
. D/ u- p- _! N  x
. P7 c6 z2 [6 L4 O3 hto poll-class
& t' k/ K# W- w2 f- S, n5 [9 Fend
5 o: z/ \( [3 g# d9 I
; l/ g- X& ]% b% T5 T/ Q3 lto setup-plot1
/ e" e1 f+ y, {) m
1 _" S" o2 J1 C) gset-current-plot "Trends-of-Local-reputation"
% L8 c: {* R' c9 o+ o6 B; N

2 h9 o2 D, Z) K* ?# K$ u1 Wset-plot-x-range 0 xmax
6 N' O6 @9 \, X9 W2 J# S

, b0 @" E4 p9 m7 U: S* k' r4 p, c3 }set-plot-y-range 0.0 ymax

5 t. A' g! W+ E0 K& ^end
0 z0 O- }' ?$ x% A/ ^( ~
& }- R! T2 P4 l# R$ |1 kto setup-plot26 S% E+ m% l- j8 \" a7 a& ^! B+ d

! x4 M7 D2 I/ T; F6 G5 ?set-current-plot "Trends-of-global-reputation"
1 d+ N4 f2 m' ^: `1 }
4 X+ u) I. T$ t; E
set-plot-x-range 0 xmax

3 |9 E. ^* _6 {8 b( W8 C" T+ X( ]8 ^1 o* c+ K1 u# a
set-plot-y-range 0.0 ymax

2 L7 d. \9 `' L+ ^$ _" Q7 O9 d" _4 E9 Nend' S6 g% n/ g0 B2 P1 u) R, f
: E- T- a& I5 ?8 b+ v) x
to setup-plot3
; R' R4 J& A! |
  ~, Y) Z; a! \7 u7 wset-current-plot "Trends-of-credibility"
! P$ i' v0 l% D, H- w! D! p9 d
! u$ z6 u3 ~- D9 P7 l( m% c" Z( J
set-plot-x-range 0 xmax
- i1 k1 _4 X9 G' P, Y9 s2 [5 K
6 l- _, c( t) E. R  a+ `6 C$ p
set-plot-y-range 0.0 ymax
8 A( {$ e3 X" B4 }7 A9 S
end) d) F" l! d1 ?# {& f1 T

3 y5 L/ U6 W) }( U# a, D" {% v8 sto do-plots
3 x  i3 O# K  N+ ]' c6 _7 Tset-current-plot "Trends-of-Local-reputation"
/ P) k7 D5 e( s2 Z; t2 b$ _3 jset-current-plot-pen "Honest service"
/ @5 {% {# N! a  s5 J4 O0 |& iend
7 n+ l1 g  a3 R6 C" T: {( w) d0 T! D' Q( [! [/ k
[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

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发表于 2008-3-19 11:33:07 | 显示全部楼层

有点困难

没想到挺复杂的,我去问问师兄们,不知道你是自己建构的模型还是其它模型的改进,我试了一下好像setup都有问题,别着急啊,呵呵 。
发表于 2008-3-19 11:34:29 | 显示全部楼层

还有啊

发表于 2008-3-19 11:35:59 | 显示全部楼层

还有啊

能不能传nlogo附件上来,一个一个敲太累了,好长的程序啊。
 楼主| 发表于 2008-3-19 12:47:57 | 显示全部楼层
嘻嘻,不好意思啊,现在把附件加上了.8 [! `6 f- d: O0 m: h  j

7 f0 U" C- b. w% w$ |这是我自己编的,估计有不少错误,对netlogo了解不是很深,请多指教,谢谢!
发表于 2008-3-22 16:55:16 | 显示全部楼层

程序公式

我问了一下,只是从程序角度来分析,是跑不起来的。如果参照你建的模型(公式),可能会有帮助,我的邮箱是wjcpcahu@126.com.方便的话,看看能不能进一步探讨。
发表于 2008-5-19 18:02:44 | 显示全部楼层

运行不了

提示custom无值,这是怎么回事?
发表于 2011-4-10 14:42:01 | 显示全部楼层
好高深
发表于 2011-11-7 11:36:13 | 显示全部楼层
为什么大部分的帖子的交流都止步于2008年,从08年到现在好像已经很长时间没有更新过了啊,为什么呢?
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