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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:
6 I1 o5 j! X  f* X+ K  x/ o1 Eto do-business
; ~" ^2 Y7 y8 r rt random 360
' `6 f. N: @1 o, e fd 11 m; R& n" _. E, |2 u& r
ifelse(other turtles-here != nobody)[+ ]1 {9 G; x( K- q+ D
   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.
0 e$ j$ ~5 u/ z1 S/ |- F   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ; G, t6 E) F9 u2 }1 A' D
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer% H# w: n% N8 Q) r
   set [trade-record-one-len] of self length [trade-record-one] of self
( L, P% i' y) l, d5 n, h& R   set trade-record-current( list (timer) (random money-upper-limit))
8 I$ j. g- R* j: s4 G9 u& W, V. f! o6 c$ l: J; g3 u1 b
问题的提示如下:1 H) ]7 R  e- k. r
; A7 [1 I/ C; |4 t
error while turtle 50 running OF in procedure DO-BUSINESS
" `" [" D6 \: k( K  called by procedure GO
! }. W$ t$ T; U! x5 JOF expected input to be a turtle agentset or turtle but got NOBODY instead.
6 ^5 ~( W8 C# i" N1 L7 c  K
(halted running of go): z5 R# f# C' ?1 h8 U

2 ]  v7 s9 Z4 p( [5 I, |; m. \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~~
& I* a- a  Y0 y% J& i6 h; y' V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+ w! g- b0 T( c% t. j8 C
globals[( _& Q3 A1 s* D% q9 n: P* {
xmax7 F6 [! L3 @; H" H) q# W8 S0 O
ymax
/ k9 v& ]/ ^2 @% }8 fglobal-reputation-list+ ^; ?: C# u+ b0 f" P; t

# {7 t# t% q: [' y4 {& ^) u;;
每一个turtle的全局声誉都存在此LIST5 T9 U/ }5 `( n0 g* @
credibility-list
  h. V' @- Z5 l/ d; X;;
每一个turtle的评价可信度1 U5 h4 B; ?; G6 q8 v
honest-service
3 N* @* ^& y* W: l) Xunhonest-service
/ w# |( m5 m& H* R  Moscillation& y6 ?/ H4 Q8 t. d" Z; V
rand-dynamic
3 L' J5 b- l( _( ]  E]. V7 C0 l0 h- I

5 C8 ?. j4 @+ [& Gturtles-own[
) m6 }4 N" J* P4 Atrade-record-all
! _- K1 G, E* _& X7 N;;a list of lists,
trade-record-one组成# v( U' ]0 A1 `8 @! m! a3 P
trade-record-one! H, K) l( e- l5 r
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录8 c9 H) z: Y; b' h) }( i; o+ ~0 i& u
/ T3 @$ L, t& O) I+ C
;;[
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]]. W4 C$ f* y2 c
trade-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]
' m* k8 j( B! j, H' k: ^8 D  ]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* W0 u: i' D  o5 ~# l- c
neighbor-total" j3 k# E) D# W& ?- _: u, U
;;
记录该turtle的邻居节点的数目
% B! q7 L% i& U( A, i1 Ytrade-time
* o" [" o1 F6 R" {3 k;;
当前发生交易的turtle的交易时间' c/ ?+ e. Q* u
appraise-give# P) V, q& }4 l  W
;;
当前发生交易时给出的评价# t8 O+ S( d7 U: n4 q  g0 R2 \* Q
appraise-receive( w0 \/ x+ U2 t
;;
当前发生交易时收到的评价
3 Z/ m7 Z$ k: Q) I$ l9 b$ Zappraise-time
! W" F1 h" v7 b;;
当前发生交易时的评价时间9 H( e0 z1 P$ ^
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
4 }3 B  f% F" W# e- K) \/ `trade-times-total- X& X% i4 d: ^3 f* W
;;
与当前turtle的交易总次数
2 t8 W$ \9 {: Ftrade-money-total
" d) n# y# J6 _, M4 B. z;;
与当前turtle的交易总金额& ]+ W/ w6 {9 o7 r3 q
local-reputation
4 k# g0 T9 A+ [( Eglobal-reputation7 Y( }+ w: p* L' E0 H- P0 {4 J
credibility
6 [7 Z3 _0 t7 ?) h) p! G- U;;
评价可信度,每次交易后都需要更新
9 Z- c2 |# K. b% _0 P) Y7 h6 Lcredibility-all
$ c, }1 ~9 M& `6 H7 A;;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! P8 b- H6 V7 f' b! ~. {
6 T7 @2 U! c* |- H! ~& q
;;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+ G6 ]& @: d2 J. f5 J  M5 B
credibility-one, O) X0 v* Q& K- x# u) s" L
;;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
6 o3 v+ n, n* Q" c4 uglobal-proportion
# M2 Z; U) c8 A( O1 S, Dcustomer
# b4 F" ?& _  z  b; Y) e1 ncustomer-no: i3 U6 R7 j' V: h
trust-ok
3 F% n$ C8 G  T; b$ }* Dtrade-record-one-len;;trade-record-one的长度6 v; u! c5 ]7 L# D
]
; T! Z, @$ X$ ~9 J# C$ G; g8 |% @! s' A: v4 u4 L( _& k, G2 ?: U. w1 ~
;;setup procedure
8 B" X6 W; i5 X; F
. ?. J& O7 T5 H3 q: ?9 F8 ito setup/ J& f) R. U% |) B* l

2 @( x0 D  z7 N& K6 _0 m+ Bca
* J8 i$ u5 z" f7 L" r8 C( {
. f5 Y$ n6 R& E0 z
initialize-settings
/ B5 m0 r) E0 Y2 \8 S0 S; y# m
" q. l4 {, [1 `5 v. F
crt people [setup-turtles]

6 R+ E6 G! I$ k. Q) q  R5 G
$ R8 b6 T: T5 J- }reset-timer

" K- I: {( Z+ g, A( p! E2 j/ o, q' S1 E/ E3 h, O
poll-class
2 j6 }3 w2 v$ q6 I

2 c/ A8 {# b2 L* [6 Q  P% {# rsetup-plots
. A5 ]7 y( U1 s& b7 T
! y8 M1 Z0 }4 B+ I8 X
do-plots
3 o6 L6 ^2 m& @/ f. I
end; k; R2 L9 H4 D3 f6 [

  ^# s+ @% H4 J/ dto initialize-settings
) G9 N7 N8 o6 b/ w7 e3 y. |
6 c2 R7 h7 d6 t6 M7 Sset global-reputation-list []

8 U" U$ M/ H3 r
5 S9 X/ ~: m: c. Xset credibility-list n-values people [0.5]
: C, u6 g! u3 p( ?! u
" ?7 o0 j" e1 i9 w! w
set honest-service 0

' s/ }9 f; \4 T* v; P7 X$ J. O: S, }& X0 n2 f% l8 o
set unhonest-service 0

2 Y2 n& f. X2 N- k# O. X
4 E+ u& @6 J1 W3 Pset oscillation 0
/ F) T. c7 G# _# U5 Y" `& k* X
7 P3 O, X$ P+ s' Y0 i2 {: J& @
set rand-dynamic 0
) i3 b- p. W! v( o1 I8 B
end- x, F8 S% H7 b, E$ w9 @* |7 p

1 n0 q0 Z: E2 f9 xto setup-turtles
6 I( c8 x' n( f' o) Z  tset shape "person"
1 l& q. }: C5 d5 a* tsetxy random-xcor random-ycor
. `/ U& I+ P# y; Xset trade-record-one []5 p& p# H* |% m& f$ o; y

+ ^+ d5 j) g+ x9 Iset trade-record-all n-values people [(list (? + 1) 0 0)] 5 L" ]0 J% p! O5 }, g' A5 V
: U6 ]2 v, d! C, m$ D. E. E) i0 C
set trade-record-current []
# b, S& H# s: Cset credibility-receive []8 n( r3 \" b, t& `# ?" m
set local-reputation 0.5
7 C4 E  ^0 i/ `" ?7 q9 Q5 _set neighbor-total 0
; h2 @: d/ e; ^set trade-times-total 0
$ D% S; P$ G. r# gset trade-money-total 0
6 L7 d) }. T/ K" Q( ~; Xset customer nobody
7 \: i1 _- w  F1 ?set credibility-all n-values people [creat-credibility]# }0 \  s0 C: ?# {3 a, K0 t% J( F
set credibility n-values people [-1]3 ^9 K+ L' @6 n0 H. ~" q
get-color# M& l) X( W/ y, G6 N" p
9 q/ w2 w0 G3 z2 K. i- K  h
end2 H  F6 Z0 g. n/ l. ]2 \

5 I7 g! R: n, [) ?% N, bto-report creat-credibility, A$ v9 c& O! S# B
report n-values people [0.5]
# r: a, f- u4 f5 \: D1 M0 ^end! b$ i* ^  v. v

8 B& [" d, i, w% ]: jto setup-plots0 V. P0 h+ G& h# n7 {

% S! T- B' A# T* Cset xmax 30
# j# Q9 S6 B: i7 y- z9 H
. i  h2 M5 U9 V' E% o2 I, I4 f1 A$ F
set ymax 1.0

6 H/ ~1 J! b3 C! Z/ I* U# S4 \: F5 C" [6 Z/ W8 q( A
clear-all-plots

1 g& ^  l1 s1 Y1 @( S7 A$ Q( X! ?$ u! k. E# }
setup-plot1

. C) H4 T4 k# g- C) l6 S' D: u$ k9 ?4 f- B6 c  }
setup-plot2

+ O) A) D( _" D
$ d$ w" I  b- q0 J% h. S# lsetup-plot3

9 Z( \: b2 ?. z- v, l. Y) v, e- [end
( A6 t* l8 E. u: j
/ r; S- b  u8 _% n* U5 ^4 Y3 D;;run time procedures3 T3 O4 T7 A: Y  k& r5 ]

. e; _3 o* T( g. M8 Yto go# V9 q5 V) \7 B2 x0 r
0 w  j! Q* z3 q* {3 P7 e
ask turtles [do-business]
8 G/ r  y; K" m" V8 S
end6 Q/ y" Z% A* |: L; s4 |
. @& v& c; r; t& j
to do-business
% R+ W5 w4 X# N- _

- u6 _% K% Z2 T+ X
' J; x' _( ^/ a+ [" Qrt random 360

  t  N% R5 B- Z; I6 m) X4 q
+ |$ r; P7 p4 X# `# [' L* Hfd 1

) Y6 W- y" f+ z( ^
, X* p; D& L" b: G) h6 x, jifelse(other turtles-here != nobody)[

) \; g1 R8 i; z7 Z* g
& E9 O/ N& |3 ?1 R. f5 G$ vset customer one-of other turtles-here

3 K" ?; r: R; ~0 A/ Z/ `; P$ p' D) o; X0 m
;; set [customer] of customer myself
5 i) s. E# g- R& B7 M* b' ^

3 L* a. d( x& D/ I. {. Mset [trade-record-one] of self item (([who] of customer) - 1)' \2 g+ O: M' C/ D
[trade-record-all]of self: S/ G$ C7 l' M  z1 K& L1 N; X
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

6 d! }/ [* Q. i# P. d4 a0 v
% h$ A- c6 B" \( Eset [trade-record-one] of customer item (([who] of self) - 1)
* a- G0 O9 h4 Q4 Z6 a7 j[trade-record-all]of customer

+ n' c. i) m- O, v5 [
& t( v9 ?; p( _+ e, L2 S4 cset [trade-record-one-len] of self length [trade-record-one] of self

0 q3 j2 H4 ~( {7 {& d  [
7 J3 V% V# V( \) }+ vset trade-record-current( list (timer) (random money-upper-limit))

+ ]$ J6 L- w5 I2 p2 n; c( X8 Q' G. y' b$ N) L. P* v' L
ask self [do-trust]  `, w0 }+ [; n3 H8 c" [3 y+ ?
;;
先求ij的信任度& B; N2 P2 e1 T+ {' {
. J& [! |1 N# w; [% @
if ([trust-ok] of self)" ~# Q5 b) x3 s8 P7 \+ j
;;
根据ij的信任度来决定是否与j进行交易[: h: E1 g( q) t- T
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself0 B. E8 u+ b1 r, m5 P8 y. t5 v- {* e

" b" e" K- ]2 ^, p[
6 l; e) i7 w* e1 x! Z$ `6 t/ w3 \

' O+ ?3 _  t& J4 ldo-trade

. ^; i  N# a0 |2 F# Z' }8 s0 a. i) ^( `
update-credibility-ijl

% W! {3 @  c% ~9 y# C# w7 x7 h' a: n9 Q9 y5 L
update-credibility-list3 L' q  n+ N  X% y+ q/ o
5 {' S- |, \4 p' ^

  Z" D& F* s* l6 W* Dupdate-global-reputation-list
# \6 n5 y9 C, G. P. P4 R3 T

. G: ?4 |  Z; V. Q; M% `9 @poll-class

/ Y5 D# s; W  g& k& J+ e; Q$ r) y- U5 D7 M
get-color
# N1 F+ X6 |) a9 L# V* l

" t0 L% U7 v8 B# _6 u% e]]5 q, B  o& o: Y* j: M6 Y1 h5 S" K
7 Y' T, ~! R; R  O( W
;;
如果所得的信任度满足条件,则进行交易
' ^8 t! G  e7 R0 i' S9 z# N' O, Q; i3 N4 ?2 u
[

5 p0 o# \. h" Y! Z+ D3 i7 A
3 u7 T4 V+ F) K5 c! art random 360
7 w" T# h7 W5 J  }. o$ u
, b! W3 G5 Y6 {2 R3 w
fd 1

: L8 ?1 \) R% I/ G" Y! K, |8 s, [" C3 @: c
]
2 f2 q; M) c& H" }- E% H

. u0 ~+ E: k& D# u0 T+ N6 Eend

) |- G7 L9 d% J8 R7 g4 |! p- D" k' q8 `4 x
to do-trust 5 J$ {, ]0 G6 t
set trust-ok False
2 Y4 U2 L# r+ z# b9 Q
& z: U' O' L4 T4 m& f! d
2 f. j7 {- {# Q6 o
let max-trade-times 0; R4 \2 y8 D) @6 `
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
2 X7 M8 j% @8 e* Hlet max-trade-money 0
+ _5 ]3 s: T0 C+ R3 Cforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]) T! K, O5 g8 h' B
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))6 i, F: ?5 F4 w3 I

7 E" B( u; ?7 Z
7 [! K* Q+ J( R" O/ F5 g
get-global-proportion5 y, q: y0 V) n  `2 g
let trust-value+ [8 Z! Y$ |8 a1 h! }; t: e
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)
  O5 `$ V# I8 O: S7 \2 Z! }5 B$ x
if(trust-value > trade-trust-value)3 ?6 M9 f- C" E" i1 d7 \; W
[set trust-ok true]. b2 D* y& m/ I4 m$ R/ q
end3 C4 m( ]! H3 s
  A/ l$ D* R  \5 O- N0 [
to get-global-proportion7 ?1 K# S' o1 s0 {) o' `- ^# u
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3); r* G: H* V2 K
[set global-proportion 0]. |# u- q/ h! O8 O8 N
[let i 0
$ F* h' `, V& a' }' N! ~! Alet sum-money 04 q5 v! I" ]/ e! u
while[ i < people]
& k  D7 u" y7 h+ c[+ a2 Q7 ^! I% p# i! e6 x( r
if( length (item i
- l3 o5 f: {8 ~% }' _# ^" r( D[trade-record-all] of customer) > 3 )
( R: K6 f# X. ^( b# f$ }
[
5 E7 ~% i; f+ W- I! y/ C7 mset sum-money (sum-money + item 2(item i [trade-record-all] of myself))! k) i2 |- P  f# k
]
4 ?1 e4 m0 d6 }2 d# N4 D]* G8 t+ p% Q' {
let j 0
+ K, @7 {* Z; F* b+ ^  p( c5 a; {let note 0, Y+ `/ Y; T4 h( @! j
while[ j < people]3 f6 F# c: G, o( r
[* o& p! `! Z) Q( [2 a8 j
if( length (item i9 p6 @1 ~3 I, N" y4 B
[trade-record-all] of customer) > 3 )

2 H1 e- n! n0 y: W9 t[
+ m  W+ {% F7 @8 N; W) `ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)2 s' `; C: N  O; J. S# d% a9 D
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]7 \3 [, n5 d& l* d- N/ n
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
( I9 a3 `# ]. l6 [% w- B]
& }' U, n+ [( g4 L]
* h' n6 J* R$ m- U0 B3 Y7 tset global-proportion note
3 F% |& @1 P  W3 ~2 ]]- r- H8 k8 g! a/ Y  K) G0 r
end* C* K1 ^! ~! {0 |& p

1 I- s& v: H2 m9 ~to do-trade
' K  y) q2 M: K6 V;;
这个过程实际上是给双方作出评价的过程
; d2 Q+ t) V  V' Tset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
3 d8 U1 I' S' z6 Uset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价& C& x% @2 I$ F3 B& _7 ~
set trade-record-current lput(timer) trade-record-current
2 a% `, [% O; q1 Z3 S;;
评价时间
4 z' Z$ B7 n6 H' Vask myself [+ O( q( O, w* o4 [* G& x
update-local-reputation# `  T& ^. a' @% J" A- s, S4 W
set trade-record-current lput([local-reputation] of myself) trade-record-current2 Y+ E2 ^4 ~4 @; C" @
]* M4 x& e' [1 a% i# W
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
2 t) x, m7 E1 ~0 G9 J' y! S;;
将此次交易的记录加入到trade-record-one5 ~1 {/ E8 l8 j- r/ U
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
4 [0 Y! j7 K+ Tlet note (item 2 trade-record-current )
  {. T+ C7 y* I9 e% {1 l& y3 y' {set trade-record-current
: N/ ~( R* k8 j(replace-item 2 trade-record-current (item 3 trade-record-current))

1 J( S& u% u+ Q8 c3 a2 T. i* dset trade-record-current2 e/ Y3 n. F  |4 T# O3 v$ @5 i) k
(replace-item 3 trade-record-current note)# @" J" X- K3 `, X# m+ U! O
; a( i# D) R- I
1 L- T# i1 E  e- E/ Z  N- z
ask customer [
7 j, J3 \3 M8 B) m+ A1 z+ Lupdate-local-reputation4 {. ]8 S5 X8 ~- _- r  N: K
set trade-record-current
( z6 d, Y: Z7 Y& T- `  P6 T3 [8 l2 J(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
+ {3 L9 L6 `3 V  G& k
]
0 ?9 N; Y: S! O: N1 b" ]* l4 U! k: ~( a$ {  a

" Y. ]- h% K3 G2 q% T  _7 Gset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
6 r# W2 V2 \) e

# Z4 I& \" g+ R! q% U. U( L! {set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))! R4 k# x, n  @2 p$ ]+ p( Q
;;
将此次交易的记录加入到customertrade-record-all
/ z" H2 Y8 S( B2 Nend2 x% W2 S& x  G9 T- n1 s

8 }8 \/ S6 B; X" ^( rto update-local-reputation- Y4 [, F% A) i1 t# a
set [trade-record-one-len] of myself length [trade-record-one] of myself4 h! l: [) U5 M, y
2 k  T, |7 H/ `5 H. ]+ o2 s. N
4 {7 Y: v) A3 L1 ~4 f# k- X
;;if [trade-record-one-len] of myself > 3
9 l+ [. K' Q$ t; C/ d2 ^1 F
update-neighbor-total* w& m- y3 W& B1 r6 p% M6 Y& Z
;;
更新邻居节点的数目,在此进行  p: i/ n& {5 B( l
let i 3
; l) H  ]2 _9 {let sum-time 0
  R+ B9 E5 U. h( ^' wwhile[i < [trade-record-one-len] of myself]
7 |; l% d3 D2 |+ H" A4 h[
# {9 K3 z( b( D4 E( A0 J9 Uset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )2 c/ ^" q$ a, j3 W! _
set i. _' ?; E0 B8 ?& s" _" I3 p3 n
( i + 1)
' m+ i1 _/ C, r2 W5 X
]$ l! D6 R2 }% F
let j 3
+ C9 _$ `1 p1 g3 u) f  ^8 jlet sum-money 0: z; o* Y, G' N# k# ]# Q( \1 {
while[j < [trade-record-one-len] of myself]! a7 Q, @4 G; }4 @/ @; F
[
5 n: ~! m, G% N2 l6 \7 m; }) n8 rset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time). \  A! U3 r% |- G' t3 C( h% }! A
set j
0 F! L) J$ G) |1 ]! J; k6 j  N( j + 1)
" @# i6 j! j, @3 L6 Q' q) i8 ]! q
]8 H5 a  Y2 u/ N
let k 3
6 g9 w8 W" _2 J2 t- llet power 0+ o* V" @* c2 k& B
let local 0
0 M7 d0 B5 B9 v5 `) iwhile [k <[trade-record-one-len] of myself]
3 p8 a$ h. a  e5 G[
( w, Q* s* C! |& C- U9 j5 Yset 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)
. Z/ z% N8 c+ ~* P, f* vset k (k + 1)
+ U' N. u( `6 b. ^( L]( X7 c1 Q- u6 L, @8 f" @
set [local-reputation] of myself (local)
: K7 @2 E0 m# \2 Hend
: F$ t8 }# l& k) ]' S7 ~& T8 b( y/ L$ V) u& f7 R$ k; d
to update-neighbor-total( B1 H# N" ^& h9 F3 i# V
: @) x# k+ L2 U. }$ p0 D
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]8 o$ e; ?& u% O0 O8 q  w3 f- u
! K7 d: C" K7 Y( l( f

& A: w$ D: Q2 p9 e- ]  r; iend
& m) j! S! u5 J
: l/ ?- b& V* p6 n1 Vto update-credibility-ijl ) y% g* p) }5 r. e6 n/ M" b5 g

5 k" S) ]: D- y' l$ ~  M. W2 C;;
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。6 {& F# @& K; M. p0 V5 V3 ]
let l 0) h; H1 m3 @+ [) V& Y
while[ l < people ]
) \, R- Q9 \" z+ G2 d6 E/ i# n;;
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8 B+ y% w; \0 s4 R& O" ?6 e
[
5 B8 ~( i  s4 r4 Ilet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
" ]9 Z' j) v' Q3 mif (trade-record-one-j-l-len > 3)% k2 l9 l2 g1 U& E) l. D! k
[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-one# f; E- v& p  t) [0 g# D
let i 3
9 |: B9 r6 [8 {5 u% Z) Y( |8 u% [let sum-time 0
2 L3 R; l" H6 f" C* x) _. S# rwhile[i < trade-record-one-len]
7 z( b( f1 m5 w2 r. ~9 y[7 K4 a2 t( a, V  r7 W" i8 h
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )1 r  I% |: j) |+ {9 `# _
set i
' h2 c; G  d7 V  V. m. v( i + 1)
" \" B1 |0 s; {' ?0 M
]: Y6 c7 }9 L# V3 E( p
let credibility-i-j-l 0
$ O2 e+ D" N3 J9 W! P; `;;i
评价(jjl的评价)# L( ^( x0 l" Z) P: C0 ~3 K
let j 3
8 ]' D4 p, V+ x5 P- _9 a! |let k 4
& {* c2 c, e: [! ^7 ^2 M" nwhile[j < trade-record-one-len]5 b- @1 f  L7 }/ E3 f# N) R' g
[0 s& G! s; Z" {$ y) w6 v7 H
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: z' M2 D% |$ N/ d2 l$ A1 z
set 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)
; q* e5 Q5 g! l* I* sset j  B" Z; C& J) c4 t% h! s( }
( j + 1)

7 w  `( K  H7 r8 S( U- q]' h! R, y; W5 G& }
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 ))
1 z7 _8 t0 G1 b3 }. q: N" P3 Y* q) W# }0 R: D/ q  P' J, `+ x
$ |: |6 c' w0 J: {
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)); U/ n- X7 b- F) v& w  Y
;;
及时更新il的评价质量的评价- I7 b% m( z2 T- P3 Q3 {) x6 I) e9 N
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]* Z1 M& m- F+ l% e4 y$ Q0 V. D+ f
set l (l + 1)) P- N" ]7 d8 s8 c, Z% X9 b
]7 U% x% G6 @: H7 i( y9 ~
end
0 x% I, v9 S/ e$ d) p" x
0 d" }, `* h' A) r& `0 X+ U% ~to update-credibility-list+ v% A7 h/ \* |2 Y: D
let i 0
" u' q6 |8 N! C" D9 U  \" hwhile[i < people]
! E3 H$ n0 T% d9 r6 l- N& l[1 }, U+ E+ ?+ J+ z
let j 0
8 j& r0 A% s( p% Klet note 0
8 f( S. @3 l7 ^9 |5 j; Xlet k 0; N0 [2 b6 S+ T( |
;;
计作出过评价的邻居节点的数目
" T+ F8 d; h# u% nwhile[j < people]
7 l6 k8 g9 H- {) k  o. k[
" l: G3 V8 k5 s3 @if (item j( [credibility] of turtle (i + 1)) != -1)
! r& l9 F4 ^: @# u% W: H. }5 j. a% Z;;
判断是否给本turtle的评价质量做出过评价的节点- N; v8 N! @$ x; ?
[set note (note + item j ([credibility]of turtle (i + 1)))
" c3 w$ p4 X1 U. V;;*(exp (-(people - 2)))/(people - 2))]

0 r) r  w) Y+ W9 ^6 Pset k (k + 1)+ G  \3 _6 a, \& c7 ^) r- i: f
]& ^. o. l/ [* o8 u3 ^1 R
set j (j + 1): S5 J. o$ k8 n; z; M; k
]1 \9 s6 F% j3 H: M4 y! p4 i' T- y
set note (note *(exp (- (1 / k)))/ k)
; P5 f' ]- \* s; W1 J4 vset credibility-list (replace-item i credibility-list note)
4 w" U( F/ h+ j* {9 f! ]set i (i + 1)1 [5 ?1 O& ]  l
]0 P, c. O0 @! T) ?  q/ U+ H! N
end
! C# E" }+ R% `* L. @, m. ]$ M( H9 A/ {( Q& j
to update-global-reputation-list
& B' s9 v% X: F: M2 c2 I0 z% Rlet j 0# p6 Y% D1 p2 c
while[j < people], P( l* K) G1 r) j5 p
[! |2 N! {( g" p
let new 0
  E, S5 @) t: a;;
暂存新的一个全局声誉
9 T4 j1 ]8 t+ [0 vlet i 0
, u7 Z, k& A; v/ K* }) c( ilet sum-money 0
& p3 ~8 t/ y8 C  d  Q1 Clet credibility-money 02 J- Q, ?6 a0 t+ X% t! N
while [i < people]- Y) ]7 n) Y% ?1 r$ I& o2 y
[
( u! c/ S( H$ Y- F+ Qset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))( l- m. h+ }9 p
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
* a+ Y7 i$ _8 h6 m% z2 }# Qset i (i + 1)
! p/ K8 |- z7 n6 U% N* p]
* I2 T* d% U. F. W  @/ Clet k 0
% O1 E, A% Q6 f' m* F# f! }let new1 0' }' ?3 E* M! v$ B
while [k < people]
3 G  @# S3 M- U: E- ]# W[6 n7 U% D4 \# V! s+ O4 a
set 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)
% k# k, k( q% Gset k (k + 1)( D4 O: y4 r+ D' ^
]
) D( H( }: o' r" U# I& p" pset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
) ?& O. S8 ]* Z% S. `set global-reputation-list (replace-item j global-reputation-list new)
# F$ G0 J$ V0 v4 g# Mset j (j + 1)8 z' J! E# X0 A5 G+ R
]
2 b& Q! ^3 }& F' [end  S* u8 Q" I8 n) Z3 E8 ]* A

# h2 c  ], [. N
/ C/ B: t& H( K" |4 ~" L; x1 \7 l# {3 f3 [9 F3 _
to get-color' }0 n1 e$ K% S5 g" t: g

  n+ N9 d* ^4 F! |* Bset color blue
" E3 T4 q1 F. h' y
end
$ d) y1 R7 T; g+ `& G1 `& e& D! ]5 f. Q( p
to poll-class
4 ^: F& S* n9 I+ \: c; ~end
4 z! `4 @! ~, d1 I$ y0 ~1 ^) {/ B& |* J% T3 y' W
to setup-plot1
2 x0 t5 U4 t9 q" F5 J* ^$ d1 L3 m0 ~9 h: H5 O2 X$ f" {+ C/ q
set-current-plot "Trends-of-Local-reputation"

$ d; }+ {( z' ]. E: b) o" F
! F# I$ \; w, dset-plot-x-range 0 xmax
# U, o& u6 l9 c& a, V4 r

+ F( }' h. u) l8 a1 Tset-plot-y-range 0.0 ymax
  `% G. |6 D& G+ o% c+ ^
end
6 K6 |: N0 D7 A9 ]
; c# h  W& _4 i! Cto setup-plot2
  B# [( Q) p# Y: r" A6 I8 j. u# H9 H( a
set-current-plot "Trends-of-global-reputation"
1 r. G. w. z$ Y$ v7 u, ~# z

4 z+ W# d/ x8 C% _set-plot-x-range 0 xmax

% X3 p8 Z2 U9 {* J# R7 ~: q+ S/ M$ U- Z) v8 E
set-plot-y-range 0.0 ymax
' X8 ~6 g  B  ?! _+ G
end$ M$ o! X% a5 E+ N% |
9 T' n# e% V, b" |
to setup-plot32 Y: |% e1 {, k8 L' }( T

& C& g4 x8 T7 R* y" Y/ {. \! Oset-current-plot "Trends-of-credibility"
; W- Q$ H! s2 T: R- e0 `" F; g
* }( Z# u# ^/ D6 ~
set-plot-x-range 0 xmax
- Y9 U, }$ y0 d* \7 V1 r! O
2 @! y4 w+ \4 t% W, Q
set-plot-y-range 0.0 ymax

+ R) H7 ?7 G; g4 o, @, G. S3 aend
4 k: G$ Y. l: B  S! I5 X. T! {4 x
% K; @! L/ [: o. ]. ?$ L6 }to do-plots) I0 g: C; l0 Q" A: f* z6 R8 `2 |9 ], h
set-current-plot "Trends-of-Local-reputation"& _7 A# \0 x4 y: |+ P# A8 k* `
set-current-plot-pen "Honest service"4 y+ _- W) p! t5 {7 ~% g
end3 x; v8 u" T, L

, o& a( S3 w9 T/ S! }! _[ 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.
6 c% S" f& b3 T1 E3 z* a) T- `4 E5 V* i3 a
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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