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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:
, R6 S( T" Y) u2 w) pto do-business # ]% D* R% t9 g6 H/ D
rt random 360
$ R. i5 v1 x$ `4 }) b8 ?3 n3 r fd 1+ _3 V6 f) K! i$ u
ifelse(other turtles-here != nobody)[/ k# f/ w. ^/ \- M
   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.
8 U8 f- C; K- j5 i' V   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
+ I& w2 I: k1 o; C   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer. ~3 c$ v: F! `6 L* z6 }! Y
   set [trade-record-one-len] of self length [trade-record-one] of self
; y+ f9 Q0 l( n! e3 P   set trade-record-current( list (timer) (random money-upper-limit)): f+ A  {, z. m) E

* J4 B  l5 ?5 l# P问题的提示如下:
* @6 a/ j8 F9 Q5 x* I
& p6 |: j1 U) z) ?error while turtle 50 running OF in procedure DO-BUSINESS
, G+ e) C) K6 g2 {) a: J% T  called by procedure GO0 x# c% W& K% w+ h, K3 t
OF expected input to be a turtle agentset or turtle but got NOBODY instead.4 r, j7 H4 H- U1 U
(halted running of go)
; ]6 `6 E0 W/ O
& I0 b5 S. j5 x3 a" i& Q- ~2 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~~
' q/ s$ M- G% x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
' p7 V/ n; H% O6 s- f/ oglobals[8 y( ]5 ~+ D- K9 r7 A
xmax" w: i4 A& D3 U5 G/ z
ymax
, p: Z9 X# C9 L) Y% \2 p0 ^global-reputation-list0 l! B! [9 X. k7 n% _& i5 n5 [

+ j3 |9 s5 o! W: e! @- O! ?4 X;;
每一个turtle的全局声誉都存在此LIST9 A2 S% h: c! g% G1 F$ {* n
credibility-list7 P, }6 Q& u2 ?  e( c" T
;;
每一个turtle的评价可信度/ e* {2 k' T- B
honest-service
/ N# h' j  T9 tunhonest-service
* J- D  {% ^6 R9 I) |4 Y: \. N, noscillation( i) j; L& |" q' N' E3 P3 W
rand-dynamic
1 D* [9 A! D  C' ?: J4 h- G, p]
& B: q0 D/ |& J; Z/ |/ h) Z6 }8 U9 f- p/ R2 ?
turtles-own[9 G8 P% @8 {0 E$ c+ m8 h$ H# b
trade-record-all: W5 x; w/ p) t4 l$ U1 |
;;a list of lists,
trade-record-one组成7 f: f/ E/ G, d$ Z( [2 |1 _- q& [' x% {
trade-record-one
% i, t5 W( V& F+ B6 u2 Z) 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
$ j- P: p0 ?) Y6 F$ t% ]; x8 s/ a" x/ s" K0 }
;;[
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]]
- O0 _4 v+ ^8 xtrade-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]9 v$ s0 H6 p+ G/ a. L2 j& i
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
7 o9 E. d( a( C' S' Dneighbor-total
4 `3 k8 m/ J# Q( f5 R( f5 d;;
记录该turtle的邻居节点的数目
0 N+ Y" j: N' {. O$ _0 }$ B& {  p4 Atrade-time
2 A3 C" X3 W$ P# D;;
当前发生交易的turtle的交易时间
& }1 b! [8 m5 `5 c9 lappraise-give5 A" ?3 ^5 u7 A! q. c5 b! ~, A2 x  M
;;
当前发生交易时给出的评价1 ?- ~/ h! [: {4 v
appraise-receive! f- w7 M. w0 D9 H
;;
当前发生交易时收到的评价! l  J2 e2 s, N
appraise-time
8 V/ [/ T: S6 [2 W, p;;
当前发生交易时的评价时间
, d6 I( ?7 `! g, Dlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
* ~% l- _8 }. P) @/ P0 T/ \. Atrade-times-total
1 s3 \, Z2 S6 K) d  j+ E) n: S;;
与当前turtle的交易总次数' }' @6 _6 s3 m# n2 y) b' v
trade-money-total
- {1 g% h# W+ _8 e7 P, ?9 E;;
与当前turtle的交易总金额
7 X! q1 C4 ?8 W5 Glocal-reputation* S6 P! ~+ C8 I. h3 V! L! e
global-reputation( j. ^1 Z* K$ K
credibility
, S7 f8 j- \$ N! K. [' z6 e7 X2 v5 `0 V;;
评价可信度,每次交易后都需要更新
( t/ e- Q# n" ?  pcredibility-all# R6 e, D9 n4 G4 G9 j& u
;;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
/ y4 j3 P' H/ X+ e
8 k7 \- e' Z8 E- j8 [6 S0 C;;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
% X( k# o0 d% I$ m5 J& vcredibility-one2 p$ X& f4 A' I4 z. m/ B5 G
;;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
, `: E; }1 F) }! g  a1 f% m1 H& E1 Qglobal-proportion' `* W% |) H) N& Q& E# e) w3 ~
customer* I6 ]5 ~2 _2 `3 I: F6 G' F
customer-no& g% _6 ^; J1 B5 r% t7 V
trust-ok
5 ]- ?3 a2 |& }* H) ftrade-record-one-len;;trade-record-one的长度# l9 E% M8 @* b
]
- F' Z: X3 s+ g% x" D* F! f' M# x9 K6 s
;;setup procedure
: D5 E8 W8 q7 V5 ^8 v0 t; c
3 `7 C! ?( @& Wto setup
2 i& f/ }" i+ G6 |! h6 K3 @; Y) m% J6 n. t" O- L0 {
ca
' r/ e7 C3 P- U+ M1 Y" G

" J; m, r. q; n9 Ginitialize-settings

9 n0 V( O8 s8 a( j% V% J: I
* _" t! H' [( v( fcrt people [setup-turtles]

" r% s7 b: z9 S9 u+ K2 T/ f! Z  G. z: d5 R+ s' s) g) \
reset-timer
$ B1 O! p+ b  f( @2 J" S( `
9 Q  I: Q$ Z3 E; v- h. l5 q7 X
poll-class

0 \" {- k# p- `8 Z4 ~/ m0 _) M  g# Z! I" |+ _
setup-plots
# {7 V- Z  @1 g1 `: g4 l$ ~
" c) x; f8 t% m3 g$ g' u
do-plots
% g0 ?% U5 ?! P, u& p( T+ T8 C; ^# S
end
, f% z% Y8 v" }0 A9 u* e: ]
- P* G+ E4 P6 g! tto initialize-settings# K2 t# g. U) X& ^

+ r5 p$ b# _. p6 Y; E' Uset global-reputation-list []

' r# r1 a; R+ P: _4 y3 K! N' P# W2 d5 ]# `
set credibility-list n-values people [0.5]

; [" l* ?' a- k! _/ A& a- B
; W, j4 K/ ^* y; B9 Y- i: i" zset honest-service 0

+ B9 b. u8 P* l* V7 |! g- S3 j" q+ O8 Y+ i8 X$ k( G
set unhonest-service 0

8 ]: |2 H! Q+ R9 x. V
  F  Q! C9 n; S7 G+ j0 D  {0 `set oscillation 0
  g8 P2 Z8 f  W9 \5 B

$ P# M) z4 s: S/ M4 [! dset rand-dynamic 0

+ Q& K9 J- x. Oend. F: K1 {! B( W$ P! ?
% t1 t# m& }3 f6 w  E& N
to setup-turtles 8 e0 j0 j1 w" v$ q2 T' e  k2 w
set shape "person"
' t7 K2 z% i4 ~) o' Vsetxy random-xcor random-ycor
- ]& ]7 M1 E9 B! Mset trade-record-one []" U" {5 m  k& F3 {
, B! f( a- C- ]
set trade-record-all n-values people [(list (? + 1) 0 0)]
6 h# m& ^! p( ?
9 G- v0 K$ l- a: j  X
set trade-record-current []
* P/ |/ g! c4 }" I% q8 Uset credibility-receive []
" L: |+ `' I' ^) q' B4 N( A/ Qset local-reputation 0.5
( R8 U% v3 z3 ^6 yset neighbor-total 0
# y, v# m% i, x+ eset trade-times-total 05 A, I  K' B( `! e( ], A5 w
set trade-money-total 0$ k7 ]4 S. x9 N# k5 @* ?
set customer nobody* g" B1 c8 [/ e  a1 @1 [
set credibility-all n-values people [creat-credibility]$ q2 E6 U9 S, ~, @( j: V
set credibility n-values people [-1]! T7 t, v, [( o* i" ^
get-color
+ |8 n7 ~, w/ I8 }' _  _
5 M0 r) ?8 U# X
end
4 U) o$ V4 `' P
& t( M4 L' F0 `; y0 V, Sto-report creat-credibility
* c7 ?& s0 V% x' N7 G9 Yreport n-values people [0.5]
; ?7 k, e* r# }# x: s6 l3 rend
" m) d% E# h( j3 T" d  ?& _+ O: P4 E9 o! \, u
to setup-plots+ K4 H1 J: F0 z' G! }7 @5 s5 O! G
$ g6 r* s3 k) D. h9 H: p! _% P9 H
set xmax 30

! @& x: s; ?5 J3 n; ]9 [: F! i. C# `4 z3 n
$ |* J  S: {. C" ^9 Vset ymax 1.0
$ N8 i# A: z' u% r2 o: m+ I% ~
# D' T5 u& \/ _- V, Y
clear-all-plots

8 M$ E3 ^% B( h) s% e
7 @' f9 {/ x8 s8 p: }& gsetup-plot1

; q2 r+ j9 I3 m' i! Y: d* u5 N3 z( E# J  l0 \1 z: h
setup-plot2
; c/ G3 R( B' X- g

2 r8 |: L: k- C3 \4 csetup-plot3
, z  r* W5 ?/ `7 z/ q
end* h* l3 b0 l: w: p+ F4 J
/ a2 ~  D1 ~0 h: O5 e0 Z, D
;;run time procedures0 p% b% i$ W8 K6 m! z0 r; R5 x

' P9 ~2 Y) q- M9 D+ M3 Q. Ato go
4 e- y, E5 M  g" d& [
' d- E/ j; W- g2 Gask turtles [do-business]
. q3 T1 n# m' ~. D, S
end4 x1 X9 A8 M- v& e

8 ?8 q  V# p' T8 Lto do-business
+ v8 y/ B/ Q- o5 W; F
- [4 Z+ n/ B8 ~+ Q- y7 ]/ b
& @: ?2 i" K# e
rt random 360
( Z$ x1 a; E& L2 a1 W/ G" l
" q+ ~7 J9 D0 b: p
fd 1
" N0 d4 \+ i! {3 T1 e% F. U7 h
  F6 T8 n* g7 s$ Q
ifelse(other turtles-here != nobody)[

6 u3 d2 A- i% V+ Y
( t$ |$ g, h0 H% iset customer one-of other turtles-here

- k7 Q/ ^9 y6 M4 ], K( t. V% h; |* {2 C2 X3 u6 Y
;; set [customer] of customer myself
7 _5 k0 l7 C+ P, J2 T
/ Y5 S) M9 f5 T0 r
set [trade-record-one] of self item (([who] of customer) - 1)) {; E3 z" v* Z1 i! g% {9 z
[trade-record-all]of self
( A2 Y/ K& y# {' s1 k7 F9 W;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

. j# @7 z9 L- z
) E5 \  {/ T( g$ Z3 f  i" O$ zset [trade-record-one] of customer item (([who] of self) - 1)
) `' s0 Z) F) K. r( T+ g; n# t$ |9 P[trade-record-all]of customer
. X" B# R4 l( Q9 R

6 V$ ~0 z& ?$ K$ u$ s% Vset [trade-record-one-len] of self length [trade-record-one] of self
  V. f! u( T) A

3 `5 \5 M7 f' nset trade-record-current( list (timer) (random money-upper-limit))
1 ?& \3 w0 L0 N$ s; i. B  R

+ U$ ^9 X/ ]' q- {, Task self [do-trust]
( \. g: a* W1 n8 [1 e" M6 T2 A;;
先求ij的信任度
% Q9 K0 x6 V, [" w4 ~! `4 M0 P: r
if ([trust-ok] of self)% H) ^5 E0 ~* h) j9 K
;;
根据ij的信任度来决定是否与j进行交易[* @# E5 O7 h' @
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
! y* t+ M! l2 u2 ^# y. u+ ?4 V% e! R
[

9 g; F, }1 z) ~4 }& U. u- O- d; o% q) f
do-trade

  b8 ^3 E# h* q
/ ]# k8 X1 y( Kupdate-credibility-ijl
+ F0 E! m- s$ H$ Y# t

- W6 r( e. Y; r) [) z) r; wupdate-credibility-list' s, Z- F4 k% Z% t; U; o7 P

- E) W) e9 K& K. m' e( c, a; |6 K$ q+ j1 {" J7 y
update-global-reputation-list

2 V6 j, n/ k7 I7 L
5 x( L+ e' f& J! C* }5 Tpoll-class

& n- T# q2 X" q6 n- y; g2 D) L, n
get-color
6 m  ?. h4 y2 G- q* Z, M. j/ x* B9 l+ s

  U6 d$ J1 p. O# D4 O0 v( e]]. |5 a6 C- t- N

7 f9 Z/ Y7 J4 U  T* |0 m" z;;
如果所得的信任度满足条件,则进行交易
: z& \/ y% t* m+ a% Y' S; @. w
+ E7 F. F5 Z# o1 R: I, M8 t[
7 v- ]8 z: b6 u% q

4 q8 |2 s" Z  x1 ert random 360

3 z  \- m$ S/ N7 U" R' o
$ H0 ~9 f$ N1 d1 A3 T6 N0 kfd 1
  @5 Y3 z. q9 h9 v
2 ^; ^  G# `5 `
]

3 c8 z2 j- a% ]8 g# |& L# I) `8 F& D8 r: T1 i/ O1 e! E* f" o3 E2 F
end

& c5 P$ K7 D& l4 v- \- f$ }7 H$ q. N: Z, |& Y; X3 U. O
to do-trust
0 A& g; L3 k4 c9 v8 k6 t/ D" V/ lset trust-ok False
0 F# e7 H$ p8 p' {# h: h; U* e8 s9 @5 P4 b# g" y+ g

  [/ ~+ w+ U+ ~( x8 m) Nlet max-trade-times 0: e8 K. H' O+ X- S5 i& R! @) v
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
2 D# W. B( `! R$ D: W8 N3 P, Llet max-trade-money 0; F* z) _- n4 a/ `
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]0 }4 F1 ~. C/ F
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
4 D, c5 ^/ E' [. {8 q# Y9 i6 a& ?# \5 Z

  q" v  O% Z! q8 \9 V' {get-global-proportion
4 F5 W" E9 |( \" n' Tlet trust-value; O9 s! c+ m# Y# d9 e2 p) z0 X
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)
7 k) G& w4 S( p; A% r3 k
if(trust-value > trade-trust-value)5 R7 \3 o/ E* E
[set trust-ok true]
$ I& F9 N% M0 ?3 {end! f  W& p* }2 `5 Y$ S3 w  d8 _
# Y6 d* z7 w& j7 H1 b) W& W
to get-global-proportion& [5 f% [4 G) a3 b
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)8 A0 W. L* j8 {5 i. q9 ]# j2 l3 G
[set global-proportion 0]8 N6 M# n8 }. c6 H* }
[let i 08 p, y5 o* g. [3 D" r# E( n
let sum-money 04 U! w* `- E+ a1 B# ]% R, s" ^
while[ i < people]
6 ]  s( J' k* J[
. p3 _3 O) E% `if( length (item i
8 `9 ^8 k& H% g6 m; T, F5 S[trade-record-all] of customer) > 3 )
) D9 z7 Q6 l7 U" C  H1 |
[
6 e; h8 y3 n, m+ W& tset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
. w6 c8 N$ B0 [7 _% t- r. T]
* e3 U. q& ~# q  P9 C. S- a3 x], d* C+ s+ t  ~& X7 i) R
let j 0
$ g' ~) D4 O$ f( V6 K" s* llet note 0( h( W9 d2 t, p
while[ j < people]. O% T  d7 b2 Q5 p- a
[! {* s5 V* e' Q, Y" B! J
if( length (item i
/ g) l) k2 y! \[trade-record-all] of customer) > 3 )
7 b+ d) T; X: A5 ]+ b- j' U- n% U
[! r& x9 W9 i% c' c" x4 O4 g
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)6 w2 \6 Y7 ?8 ~
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
4 I- K' d& j! S: T4 X7 C[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
* v8 V4 ]8 C' M  Q7 Q' g]
1 f& f( [' d. R8 x]
2 x: h+ j9 [, Lset global-proportion note9 t9 S( V0 r5 f" x
]+ U7 d  S7 c7 y4 V( l) `
end
9 M& v' @$ X/ O1 L# V( M: k2 T6 X2 V* Q0 g* m
to do-trade2 Q* B' K4 G8 G, p
;;
这个过程实际上是给双方作出评价的过程$ x0 M5 [  X9 T) ~1 l+ E- K4 z
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
! F" v' D. l! W8 s7 }2 \set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价% }1 |) ~' E, L* E& `7 T2 u
set trade-record-current lput(timer) trade-record-current
7 ]# I" R6 s1 U' H/ [" T' j;;
评价时间
  w. x. v: @9 O( P; K# [% ?ask myself [
. s1 C, l% P, Q( T2 j) Qupdate-local-reputation
5 O5 z& K5 p9 r' P, s) D1 l/ i% K+ hset trade-record-current lput([local-reputation] of myself) trade-record-current) g1 Q% m2 T4 H+ G; z) l
]
) A0 f/ l6 J1 c( w. w8 Xset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself5 W1 y% X: Q) X. }# I/ @# s
;;
将此次交易的记录加入到trade-record-one
' S, ~, X/ ^1 w8 y" \  m/ o& R+ X5 tset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
7 y' F) A/ w1 t1 l, wlet note (item 2 trade-record-current )4 N, T- [2 h* ~1 \
set trade-record-current
. o2 S2 I7 F; L7 _3 n$ w2 ?+ o(replace-item 2 trade-record-current (item 3 trade-record-current))

" p8 W6 F2 J7 O/ }4 _6 H% \set trade-record-current1 o5 h1 d8 l" S
(replace-item 3 trade-record-current note)7 m9 O$ O" C5 D. A2 |' j" I

1 B7 d6 {2 r9 k# ^" R

+ ]% D3 Y+ e( J+ X4 r5 Yask customer [
3 s4 h+ K0 `+ a: Fupdate-local-reputation
; N) ^. ]7 }; _. sset trade-record-current
& U- f: J. d7 d9 |/ K  R; f(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

+ ]8 J. |  u$ D]
" D/ |* Q9 d" U. o5 Q; B6 |' i3 J2 Q* r' A
2 @, {# W/ Y( c2 K# u, l4 p  w
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer2 @: U5 V* U0 b, o+ q1 P

+ c* R" \7 Y, Jset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))! @9 |) M1 l6 [1 c. D: k; F
;;
将此次交易的记录加入到customertrade-record-all/ d4 \+ a9 }6 V! W, D. Q
end. v6 W% ~9 k& S3 @. r, \5 V5 x

' l7 Z- X& ~0 K' bto update-local-reputation
0 g2 n3 ]% o* H" `! u3 ^set [trade-record-one-len] of myself length [trade-record-one] of myself
; B. X6 }% {5 D7 C7 [  C$ y1 c- I! X; s7 v

2 I$ {6 r& O* E% i0 f, j" A;;if [trade-record-one-len] of myself > 3
- ^  G8 F  U4 ]1 F+ A/ ^
update-neighbor-total
: M: o9 N- x' G9 r5 |: ^3 J;;
更新邻居节点的数目,在此进行  b8 i% F* x; R) e( u) ]$ F. G4 Z
let i 3
( Z! [7 s+ M3 W& r; Elet sum-time 0
- J5 ?8 m6 ~: x; ]. s$ d# y0 K& rwhile[i < [trade-record-one-len] of myself]
) P0 r$ M6 O8 G0 ~7 I- x[/ N% n/ W7 J1 o% W) ]5 u2 {! P0 B
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
* i6 Y& s! ?/ g# {3 H$ B" X+ r- M$ ^% Qset i
/ u! T9 [9 t7 \' u( i + 1)

2 W& s9 F9 p1 T6 ?0 S7 d]
( M4 T! h- y  ?: p4 |  A9 ^let j 3* c5 e5 m0 F( i% a
let sum-money 0  D: o1 \$ L" N# T3 Z3 n9 r
while[j < [trade-record-one-len] of myself]
0 T# O6 s1 z+ v  X8 ][; ^9 ]: c7 [+ _5 |1 k' b: t
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)4 B; ]; P5 H5 i
set j7 P0 @5 G+ B3 @+ C' e+ @
( j + 1)
' i  `; a8 q* o1 L
]( Z! w7 e/ P  R) T3 z& `
let k 3
8 A6 n; G; I4 C" Q1 T( Glet power 0
- G1 \7 }6 _! U0 g, W7 A3 U6 Mlet local 0' Z4 S$ Z& w6 n
while [k <[trade-record-one-len] of myself]
; R6 R9 R# l, v* D8 P6 I[) F' F& x4 ~* M/ X
set 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)   G7 E, Z5 j; C) `
set k (k + 1)' `! t" v$ q- j0 U$ v+ z
]
# }3 B# f7 S- T/ A7 e: uset [local-reputation] of myself (local)
; {6 g& |$ |% U  a" rend
4 _8 J" v/ D) X# z  ~6 z5 U& i& ]4 Q  B) N/ @8 z
to update-neighbor-total
9 _3 i7 o) a& U% D" F/ F6 d7 }3 o1 k6 g( g1 ~( |5 w2 d
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]! y8 j  B4 s8 ~5 T9 E
  G# K* c7 f5 |  \8 J6 u

8 c: B7 Q* z, n9 @; |end2 f  f9 `1 [* g0 y! x

9 a4 ]0 l  ?: r, ~( @to update-credibility-ijl + f4 b3 Q4 H, N2 U& e
7 ?+ B1 v( W5 }
;;
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。+ F& A0 X0 |! s8 o0 h1 P0 b
let l 0
' F. T8 `3 q& \6 R- Vwhile[ l < people ]
/ x% ?( y# H2 V/ ]7 q;;
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% ^' _' W& b% v3 a+ z8 }# T
[) c0 o) J! S! f2 Y) b- C8 H# B
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)0 {4 ?$ {% X/ C* j% c
if (trade-record-one-j-l-len > 3)# V: I7 j, t% N7 R4 S( W8 j- W
[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( [/ o$ ]2 e% J: l4 \
let i 3
) j0 J- E7 s/ d4 W9 u5 ~" m3 mlet sum-time 0
0 {0 W1 p* E) Z5 w& Kwhile[i < trade-record-one-len]
4 P) s. S9 }, k# u[
7 ^1 J; c5 j  X' W1 B3 C& yset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
6 F6 r9 q& s  tset i
  n+ c  z7 N6 r+ P( i + 1)

  X! {. F* M% ^4 ]]
$ ]( ]  @0 w) [let credibility-i-j-l 0# b* U0 c% e* h1 m$ q
;;i
评价(jjl的评价)
& R" p, p- O% p, Y3 qlet j 3- l* x! F  p% v
let k 4
1 s+ S5 U9 O. v6 iwhile[j < trade-record-one-len]/ ]6 n: C( ^" P" }4 t
[& K; Z1 c7 A5 |8 k4 U4 v
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
7 O, w$ L7 u& }* F; [) ^+ o* x& Q( ]  pset 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)) f- W+ S/ Q. a* o% W
set j
5 z3 C; u, `, W" ?) H( j + 1)

0 u% p$ c. e3 b" C]
5 s$ [; s) b" wset [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 ))# k! b7 h: q# _* x$ F2 W/ `5 X

/ @. ?* I1 t' _0 }8 N4 U8 `
# a& b  v: O4 n) ^2 \# M- q
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
; F3 w9 F5 @7 Y) o6 I;;
及时更新il的评价质量的评价
" v8 [9 o% s. V; s7 Eset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]7 i7 }& d8 X0 l7 N# O7 F( o
set l (l + 1)" m7 O  \" o5 o6 z% w: U. P
]& F# |! Y6 w& M$ J# \  C# P
end
* c1 B& z$ d* |6 Q5 Q- b: i$ J, k( h. t" C
to update-credibility-list
3 k, Q' r, o* {' A  P- X2 I% Vlet i 0
" l: e% V. h1 R0 o' p" I" M8 _0 a! T! Iwhile[i < people]( n2 F+ V2 C' t0 |  f4 q
[
9 n2 ~+ e- P, Klet j 0+ F5 S# h+ m% [6 E/ r! j
let note 0" H1 i7 ^, Z% D% e( {
let k 0
6 \  d" X" ]) H$ I;;
计作出过评价的邻居节点的数目
$ h/ x3 B6 d, E3 D  d5 G! b# bwhile[j < people]
- X) f. c) P, W9 W[2 y: @+ ^9 W" c! y: l. Z& w
if (item j( [credibility] of turtle (i + 1)) != -1)
  Z1 a2 E5 H+ e2 n) [& ?;;
判断是否给本turtle的评价质量做出过评价的节点
9 j) S( B+ q. W) y9 T2 t[set note (note + item j ([credibility]of turtle (i + 1)))
. D; A' R$ r2 `8 n% V% s. z;;*(exp (-(people - 2)))/(people - 2))]

! z  W. I  u5 K- yset k (k + 1)+ l) o- @7 P( `' m  W0 n5 q+ E$ C3 V, @
]8 u' Z* M3 z& l8 \0 i
set j (j + 1)
4 R! ]! a; ^) L) O" \4 P]7 n( h2 b( }/ o9 R% a8 I3 ]# W
set note (note *(exp (- (1 / k)))/ k)* ~# \8 Y! ?0 h0 ^2 x: j6 B$ o
set credibility-list (replace-item i credibility-list note)8 M9 C2 V. t( H, ^4 K# e" U
set i (i + 1)
) x: y; J* d" R& P- `9 [9 u]! B7 m9 e- ]- g+ c* D6 C) M9 w6 }
end. ~2 S" u3 t2 o+ Z4 H+ o8 u3 a
6 S6 R) U: h7 D0 v" B4 O
to update-global-reputation-list
' w) @8 w5 r7 _let j 0
9 y6 o: F' s0 O! a* qwhile[j < people]
$ E& O, M( q" u/ L7 \: Y0 l9 H[( ]8 H" ]; v- V0 n1 K
let new 0+ c( E5 y$ i& |/ ~
;;
暂存新的一个全局声誉. R1 V' j0 d0 q! }3 e
let i 0; D- C0 m4 i. X4 _  D/ P; y
let sum-money 00 f; {+ F# `4 u
let credibility-money 0
. s4 i$ u. G+ @- z0 W9 Ewhile [i < people]
+ ]  J# ~( }4 H/ }4 i[
& P( U. H: b; }/ m7 {set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
6 B" P) o# e0 g) I7 iset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))0 I9 C: i: Z3 @# r  u3 l9 _
set i (i + 1)% G, c& [/ Z9 w' T5 ^& H. M
]
8 S6 O- j! u5 T8 n. n& rlet k 0# W" W* v, u+ b* C/ Y
let new1 0
! L7 D8 m8 \6 B/ C4 n& W7 [while [k < people]9 f" F3 P0 ]6 ]' S) H7 m# v
[
2 F7 ]; I, `2 I! iset 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)
: u: M& B6 v6 d( D# kset k (k + 1)
' i7 l: Z% d8 w& S1 c]
5 E, Z# a; Z+ N3 _* C- f3 ^4 Vset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
5 }2 @1 o5 j7 [. Z7 O& K5 cset global-reputation-list (replace-item j global-reputation-list new)
( i* @, G$ ^8 @/ V; ^- Vset j (j + 1); l1 h! \: S7 d) P9 a7 S% a
]. n% ]! k5 ~3 ?+ g, p* O
end/ H: A7 s) b& J& J: [

# r+ D  ~4 z% e" G) `  \& T5 I" u' y. Y! T2 m, {5 W" F

) e% c, n4 [+ i8 J: I9 L2 Mto get-color/ F/ B1 x6 I) V, D2 g. c& b

) z- k  k9 I& i* v1 l6 c* B7 i$ |set color blue

9 y& [. c! {3 H# i8 R5 K! mend
0 Z! `+ y) _9 g7 f: F0 A  `6 v
8 N# o) w1 w0 G  bto poll-class! R9 S* f1 ], E! h0 H1 {& ~7 n
end
# d+ }3 A  g: z# u4 j" p6 V& j: J4 F* @, O
to setup-plot1% P& e" |( S! Z) x* \3 ^% }6 d

& m1 Y+ v" \9 q8 ]; a2 jset-current-plot "Trends-of-Local-reputation"
/ U4 ]" d; S1 J  t4 l

9 g, B% J9 J& I8 u3 mset-plot-x-range 0 xmax
" ]* G" O3 g; P- }% a
% P+ |* }8 I) H2 K& _/ |
set-plot-y-range 0.0 ymax
; G1 v4 D1 [1 l
end1 l# W1 w/ w- \
; p3 f+ P' i# D2 d
to setup-plot2) C, P$ w( L5 g: Z) A
) {/ {: N! o/ G
set-current-plot "Trends-of-global-reputation"
; P" ]0 ~$ G$ Y: r! x% C

8 W# ]6 j' G$ j1 bset-plot-x-range 0 xmax
8 }, `4 [* }1 I. \0 q5 k

6 g! e/ N  g5 _set-plot-y-range 0.0 ymax

( ?. Z; @$ \5 nend
3 o5 t5 ?5 V) ~9 E$ D7 x. C
2 p0 n) b* ?$ C, l! M- G1 |to setup-plot31 [/ P" _& A% Z% h) b6 M$ c

& L% @* z& _- q2 m; nset-current-plot "Trends-of-credibility"
0 r! d1 d8 w4 ?; n3 O9 c

  J  x; T& @# s* Z8 yset-plot-x-range 0 xmax
  A7 h' U, ], F* v
% n4 ^" p0 ]  B" v% F
set-plot-y-range 0.0 ymax

6 G  o" e* G8 M9 Rend
& ~! [6 T* J3 q3 J7 c2 W6 I* f0 C. `8 I! @
to do-plots9 c! B8 \8 r$ l' s; X; Q/ s$ H
set-current-plot "Trends-of-Local-reputation"
3 i) W9 B' u) L$ H8 y/ u, nset-current-plot-pen "Honest service"  |5 e( p- I4 _0 d+ p7 w
end1 X# ^% o6 ^6 O7 [  }8 B8 D

" U7 X4 ~3 w$ G2 g[ 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.
! Y; W9 s% |' T0 E* \; X5 B6 s- d- V: d6 f: g' R5 K# b$ T) \, y9 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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