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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:
, b) f, R5 t& t! p8 x- f8 m; Zto do-business   ~3 J; P  d+ I( C9 L
rt random 360
  }# ]2 M5 X/ D6 v/ R fd 1
: }" g! e+ c5 V+ y( T# o0 @ ifelse(other turtles-here != nobody)[/ S  u: L. a+ k9 R  q4 \
   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 r) x0 m  k& I# n: T: U   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
7 `/ q& ?' R5 o6 [$ [& H* [, N   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer' D* ]! c3 L/ n$ G6 k
   set [trade-record-one-len] of self length [trade-record-one] of self
4 b7 u! r% z+ T: P   set trade-record-current( list (timer) (random money-upper-limit))* m9 }- M: L$ [$ o' d2 J
' a% l4 x; b1 M8 p  n' a
问题的提示如下:, ?+ L9 P8 k) g, y7 y! C
; c- @# s4 G; [$ f$ e  Y
error while turtle 50 running OF in procedure DO-BUSINESS/ \  a* _" _! n5 L# n7 M
  called by procedure GO1 a: }& c4 ?9 t) N3 f/ @- I- \
OF expected input to be a turtle agentset or turtle but got NOBODY instead., ~$ l. Z% l0 U, W3 ?- D
(halted running of go)  E+ W6 G# O& M

- l8 |1 p' M+ q% V- K3 Q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~~
" N5 ?; }1 T5 R7 t7 e* t. D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2 s: g" u- F0 \6 A& G1 c
globals[
7 Y0 L5 q, X( ?' g% gxmax
1 K1 |, Z4 f% o. nymax! K. J7 E7 I# \5 X
global-reputation-list) Y; n$ V" J: V3 E* V# d7 d

' L2 u3 O# s3 |. q4 A8 S9 o;;
每一个turtle的全局声誉都存在此LIST
- m) ]+ E/ T+ e, d3 Dcredibility-list9 y4 D% Q* `! F7 E
;;
每一个turtle的评价可信度! \& C- z6 m8 g, Y' V! i
honest-service% x, I# e6 H6 U2 ?& I
unhonest-service( K3 s( S4 y7 `( X- g
oscillation) H" g7 F' L' Q, g" D
rand-dynamic
* ~( U; [9 D/ q: r6 a" P/ r, K8 j% e]
- W4 }6 Q8 r! A3 `3 V! a3 @( c8 J
turtles-own[
" R2 d) R/ k9 I2 Y1 btrade-record-all. n0 W1 d$ g8 A; A
;;a list of lists,
trade-record-one组成
/ S* l3 ^; M$ K# Ytrade-record-one
: D; ^9 v* ]& c1 h;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
  a9 F. H8 @. X4 t0 u7 X5 J8 {% S7 j, o# _( R! Q& P: C; b
;;[
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]]
0 B; R% d" j6 Rtrade-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]: Y7 Z  A* g0 T4 B, q
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list4 ^8 J- l# l! Q9 V5 @% D" C
neighbor-total
9 z# t6 ]$ D2 Z* ?+ R3 t;;
记录该turtle的邻居节点的数目' r0 N& |8 t) @: _
trade-time
5 W+ Y0 y4 M, V" ]" Y;;
当前发生交易的turtle的交易时间
. @4 }, F. T* o* N+ F3 J/ I; oappraise-give
: T/ f" ]* p, B0 G6 Q;;
当前发生交易时给出的评价  w% F% t/ J& g& `: k0 K
appraise-receive8 e& R3 i& a7 x! ?- T
;;
当前发生交易时收到的评价
1 L6 |( z+ I% F# p: K( ?/ B  Sappraise-time8 S. B- W7 a) i. Q" u: b3 I
;;
当前发生交易时的评价时间+ y1 M" ~9 p6 q$ r
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
6 A# D# Z3 ?0 Ptrade-times-total
3 h# d5 ^4 c$ S;;
与当前turtle的交易总次数9 R1 U. s4 ?& J* e, G$ Q  m
trade-money-total
4 c  U4 `4 d# ?  O0 Q& h4 C;;
与当前turtle的交易总金额
$ |: q8 w$ {: \8 L9 _; Clocal-reputation
5 M( e) O& r7 ]4 Y" K. [. P, zglobal-reputation
! f2 e/ F9 {; t. d6 z" icredibility. K1 O# y9 J: q! o) M; S
;;
评价可信度,每次交易后都需要更新, ~2 B5 m4 R$ \" Y/ {- t9 N1 s
credibility-all
+ Q7 a1 W, T" H3 B7 C;;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  j8 g  v* l- K+ b. D: r' U
/ w# d* Z7 d  e6 h
;;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0.51 Q1 V8 c' y* ^+ Q% b9 y4 K3 W
credibility-one+ C% J0 [3 x! ^. b* q
;;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people9 z! o3 e2 H9 }" n; C9 M3 a
global-proportion9 z7 o  z  f& U6 T. D' f5 p
customer
/ y; m% F7 {% s2 bcustomer-no+ r% H1 v& I) W6 B5 D! K
trust-ok" F5 C7 j; E8 `/ J" G1 w! e
trade-record-one-len;;trade-record-one的长度
! |( j3 W( d2 {6 ^]
. j6 y) ]3 [" J* x- y: G! U! L( ^3 i' X5 M' A  h
;;setup procedure# I# }  E9 ^# o% B+ ^

4 K. ^6 l+ O  E( d" Y( Vto setup2 ]& q% |$ _$ y( C8 `! H" I  ^3 u3 {( g; x
4 J  D" J9 t9 x8 q8 V) J
ca

0 E6 o9 n! H9 C! M, a% w1 Q2 S0 x" S) H/ V* d
initialize-settings

* u8 f9 n! ?' I! Y
5 \" w) E( I5 V" Y: rcrt people [setup-turtles]

/ x3 i( n3 O4 i! n, c
- M% I7 U" T% [& x; _reset-timer

6 R- u# v; ]( T$ J9 V& |) @  q- V0 [
7 |" L! R. M/ b. h* Opoll-class
$ j/ K6 c' q  Z% S; A
8 h( u0 r! T3 I  s8 x6 s4 N8 D7 T
setup-plots

! k8 ^4 }4 f1 I: p& c
8 Q3 \4 o# b; W* }do-plots
# r: N4 Y. @: Y1 W5 G; F- J* f. g) g! P
end0 c7 i  E" q- ?/ j
: ^- N3 I* }; o' H! j4 Y
to initialize-settings8 n* [7 a2 ^* _) [( |, [/ i

0 A& X4 U  W' E, iset global-reputation-list []

) j5 g/ w# L* u5 ^% p1 }2 N7 z  \) I; H
set credibility-list n-values people [0.5]
5 p# Z4 H) C' T3 J: ^6 s

! M5 {( Y; S% w2 kset honest-service 0

5 A2 X: f! _0 W6 I: p% @/ `$ x6 d0 M) b& S& M* f; {7 s5 ]* E+ s- F
set unhonest-service 0

' |: o+ ?, f6 L' [' P& _3 z- a( ?- q4 Q
set oscillation 0

9 _2 j+ ]; b' H. k) {1 f+ V$ V( ]. u$ L- s) o" u2 B7 p) D7 v' Z/ b
set rand-dynamic 0

, \) S8 c' m% U. P1 }/ s9 tend! y( W) ], Q/ E

3 ]2 k2 r7 b6 W# M0 Z2 Uto setup-turtles / v& @; p0 Z0 O2 s/ @
set shape "person"; d0 p, t! b, l, ]
setxy random-xcor random-ycor3 A, o2 Q1 v) H
set trade-record-one []
7 A& t0 l5 u( y; v7 y' R$ L5 R

* E) Y0 _2 d- I! G$ |set trade-record-all n-values people [(list (? + 1) 0 0)] % {# c0 j3 c9 J5 H2 Z3 F& Y% h

; f- q2 V7 m2 X% T! A; O5 h7 pset trade-record-current []: z/ J# q& K9 k5 c
set credibility-receive []
; ]+ A* L: d" `/ f$ l# C& {7 \set local-reputation 0.5+ S2 [: m; z$ y9 t* i+ p
set neighbor-total 03 z3 n7 E1 \3 i% S* v
set trade-times-total 0
. K+ r" u2 n% s- I5 Kset trade-money-total 0& x# {3 W. {3 ^. Z+ b
set customer nobody3 y) E. I# s9 b5 Y2 T
set credibility-all n-values people [creat-credibility]
8 \" {! d, ~" X* ^1 r& ?set credibility n-values people [-1]
1 G" m% Z9 c7 m" A( }get-color# ^$ }8 V/ l% T. F. u( K& O

- D9 w/ q# v, }. x9 b4 pend
& v# ], e; R" d+ x( e7 ^# ~
" E# U1 z6 p9 p) A/ O4 a% s* E  K9 Cto-report creat-credibility& c) ^( O; D, d& L
report n-values people [0.5]
3 P3 R% Y- I) t/ b; kend
/ B: s( e+ h9 {; M- [) \+ l7 i* s, r5 l* T' z) W# H* ~
to setup-plots
. i: q& ]+ B6 ?4 [7 t+ j
, \- z7 j4 L, V5 g; ~4 |# wset xmax 30

, i% T9 l6 y5 A+ J$ \! J
* x$ `  ?4 I5 }: v  cset ymax 1.0

- n) ?5 M, u/ y* t: y+ m  n* r" k, B9 b( N% j) F! ]
clear-all-plots
; ]- u; @& D- K, T+ V
& N, V) j) Q, {: A$ N/ W
setup-plot1
" q% Z' w( O% Z9 z  h
! L+ M. u. Z" Y& k/ M3 c
setup-plot2
0 N% c5 @$ o" E( ]) B9 A1 B/ p( a
& l; \- q' H+ g* n
setup-plot3

6 M! h7 @( I; X7 S7 L% Q7 cend+ j( d2 W8 J& t' E! L( i8 Y: j- E. w
- @$ r# r3 m& t$ w1 g- ^
;;run time procedures
  F; x! o) `/ O, W0 l
; ?5 s5 r& o0 R2 D' T) dto go3 d8 e3 i- x" b! I2 i9 O! r9 Q
0 z6 v6 ^0 \* M5 B; i8 z, [
ask turtles [do-business]

3 r' t& k" d2 g( ~+ X+ z5 Nend% a/ C8 Z% N8 u2 S/ J; u

1 z- _! p- ?5 ~8 N. ^to do-business
2 A+ G4 h. S$ R2 N
4 r  t- ?' q. G/ u5 K5 v

& x, S6 O0 m8 z* trt random 360
0 c- C3 s0 }/ ]0 ~6 X9 f

% [. t5 o/ M- c0 _! hfd 1
0 d6 s  o' b4 I- I+ E

' O& @3 I; m/ Hifelse(other turtles-here != nobody)[
/ r# B0 p& y0 e+ J: `
. S# D( y( H9 X( \5 J/ l$ H) D
set customer one-of other turtles-here

" K1 X+ V: h; M: O9 q' V
; W9 s+ `( c( I8 M; w8 h$ k;; set [customer] of customer myself
# m8 B& M- C: I% a
# ~  K9 [, f# ]. X; G
set [trade-record-one] of self item (([who] of customer) - 1)
, M  z9 N# f% o: s[trade-record-all]of self( g- J, _+ Y3 X" O2 H9 z6 e
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

6 n2 P/ O. `/ F5 B
* r' u* S# Y9 H/ s4 P1 |& Fset [trade-record-one] of customer item (([who] of self) - 1)2 T# W0 v4 V4 b
[trade-record-all]of customer

! Z+ o- t2 `6 X- g0 ~/ g3 r4 {. G' G& C: t* O+ K! m
set [trade-record-one-len] of self length [trade-record-one] of self
/ M- Q' m1 ~5 a8 b( d
1 c' R2 k! s) L' ]+ `
set trade-record-current( list (timer) (random money-upper-limit))

5 Q; \% U# @& B% H: y6 b* k7 z: V# _/ [; t7 S9 @& e/ W
ask self [do-trust]
5 \# ?  U: ?# ~" q3 g; o3 b;;
先求ij的信任度
2 \. Q8 p( A0 |% A0 f* ?" V+ \$ X! h4 i% M  O
if ([trust-ok] of self)- T) j6 L* O3 w! [0 Q
;;
根据ij的信任度来决定是否与j进行交易[
1 P6 ]% u/ [6 C% M1 _ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself8 Y' u( f) c+ {
9 f# n1 E8 i+ ?+ n) O  p2 T6 S- p
[
) t  u5 Q$ F6 h) O9 |

, `. C- v! M) u, k8 I. x; C# }do-trade

, x+ r/ O( m0 }) D7 A% V% c9 t
7 Y1 i+ h  S+ Q  Z3 T3 g" Z) S+ Xupdate-credibility-ijl
4 `2 n; p$ s8 `! @

( W% c7 T4 J" Z7 |3 d( z4 O2 bupdate-credibility-list
+ \; ]' A2 s, s1 M: L5 `6 D
( ?8 v# x1 F% A
. M: l0 d$ D) u% H
update-global-reputation-list
+ S) p' Z5 L8 O* r- v$ G9 J
& x6 ?2 U, W6 o% d; K* i3 d( N/ O
poll-class
6 ]0 p: @" p7 _! K( J6 y( v

! l, d, C+ h0 |get-color

  t4 G( f- H% I4 o) D8 J2 t9 a5 }! c3 f
]]
  {. m5 ^# J6 F& y( O; C1 Z" H, C# q9 Q' v9 \) A2 J
;;
如果所得的信任度满足条件,则进行交易: F6 B/ ?4 F# M* {" ?2 I

5 Y1 G) O! U/ ?& g) F; c[
9 l% x* C4 M; Y( J5 P( Y0 T/ k1 G
* |+ H* b* C% z+ `
rt random 360
* s; \/ x4 x* T7 R8 J
$ |! W( w/ a( M
fd 1

* J3 u$ ?, T# `' p; G6 h* e
% r! Y7 u7 I/ N) p]
9 j! s) o, h0 ]9 s. F

/ n# `1 R/ \2 Z/ x4 L) }end

( W9 F& O7 `+ q+ c0 _  H2 [( g  p3 `7 G5 `  F6 q
to do-trust . `) P* U5 K9 f8 B
set trust-ok False
5 i2 _5 d& x0 ^& _: m0 H( U* g
1 `1 k8 J4 K1 ^6 ?1 V: K
0 ~  P: F' v0 d) Y0 C; x
let max-trade-times 0- s) N. C, G+ G  f3 q
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
) w6 w7 u0 }8 i- ?5 M% k, M  V* c$ Alet max-trade-money 0$ w2 W9 t! `3 `
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]* N8 C3 m2 X3 Q% a6 e- {
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))) e+ w! U( T( n% M6 A3 q) d
: R* u# D/ o* h% ]8 [1 i! o

/ o. g2 x; L, ]5 qget-global-proportion! k6 y/ L" t: [
let trust-value
4 S; P  G$ e0 ~1 N# Wlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

2 F5 Q# y1 I. vif(trust-value > trade-trust-value)# y( Y9 ]% h1 H6 x8 _. K# w7 {
[set trust-ok true]$ s8 o& |" D3 T8 }9 U! D: v  A
end
- F+ a, B# K" h$ Z
- V1 @  I7 n  s5 ito get-global-proportion9 M0 w9 y2 M+ ^, t1 n) v
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
* m" H& t+ V% w7 z9 A6 C5 C4 o) V[set global-proportion 0]
. P. i& Q3 j2 o3 b3 k[let i 0  s- ~1 q/ V8 I9 S4 `
let sum-money 0: H* I1 i- b/ m
while[ i < people]
, o& H' R) `7 x2 [[
) D( }7 w! A, U4 fif( length (item i# O0 Y& W, Q& b( c! G: G. r5 }2 R+ l
[trade-record-all] of customer) > 3 )
' }. H6 U2 {0 {
[$ K9 g  X% r* j% l
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
& I& a, C1 n8 t1 \3 R- e' [5 w5 H]3 y  g( Y# i& p! P# T5 d' G
]% Z, y  z! B1 ]# L9 U" y5 h
let j 0
; @, E" ~# A. V4 Mlet note 0
- d% _8 x$ B" v( cwhile[ j < people]) Z1 _- K+ g5 z) D( z
[
( V1 r3 V+ E. U, Hif( length (item i% f4 ^9 X/ `" N' k1 k
[trade-record-all] of customer) > 3 )

' m) N1 z3 S0 U6 U5 m' A+ m[  d3 v6 Z! A; o' a3 L, p: j
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
# }/ x, k4 u, c! s[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]5 N* |3 N. f% @5 \) R* {- ~. Y
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
! ~: n. x9 A1 h+ d- M' C]1 I/ R7 V( |$ `4 K
]
* X( ~, i1 h5 p& Eset global-proportion note- W& Y" s6 h( |9 r8 U5 ~+ h
]
2 I7 r- G0 C) I7 |: qend
5 O! q, X$ n* e% U% z& e+ ~
- O! G; ]$ o2 }3 z8 g5 v& Oto do-trade
1 |- t5 K% ]. v. k: r;;
这个过程实际上是给双方作出评价的过程
5 S  u9 k7 |, D# }: Qset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
( I* K# z9 m  h; g& u( M& }set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
: d$ j8 f+ t) j; f. yset trade-record-current lput(timer) trade-record-current( B5 s" o: t; o0 l7 c4 l0 ~! E! L
;;
评价时间% A& h, [" l0 w( F
ask myself [
0 ~+ C8 h9 g. o* M6 Rupdate-local-reputation
6 P9 n; f8 u& Fset trade-record-current lput([local-reputation] of myself) trade-record-current
. ]. N7 |& _+ s2 u6 Y% S]
, D8 x6 s6 q7 K9 D- y+ `- K6 i( Uset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
' X6 f& Z& _+ U( P0 V  `;;
将此次交易的记录加入到trade-record-one
# f. M9 z* S) l, U. `, {set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)" p" y; h* {& ^* j: w! t* \* E* L8 ^
let note (item 2 trade-record-current )
/ n% H3 u. P- X6 F5 D8 Xset trade-record-current) H1 G5 r: n% A+ g
(replace-item 2 trade-record-current (item 3 trade-record-current))
. e" A/ f8 S  }; ]+ F! A0 R6 Y9 A
set trade-record-current
/ P% N( O3 Q. ^- a(replace-item 3 trade-record-current note). C+ C6 G, E& M& g

; v* s1 R" B9 J; j# Z2 Y

( V1 W/ J. V4 [) g9 }, y; K, uask customer [* f: j- X: L& X! y4 `, o3 _
update-local-reputation$ f7 i4 ]0 `3 {5 ?6 P, g
set trade-record-current
8 b5 ~" q% C5 R, E( w# d1 \(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
+ S1 t6 R1 h6 P9 F
]
4 Z6 ?. {4 c7 j5 U, l8 X5 M6 o' V$ ~9 C& M. W6 @# h; k& ]

' y, z$ v8 m3 D0 w& q* X$ Tset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer4 w& k' j3 F2 ]8 e

  Q: n: L; V$ Z! z8 Nset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))2 d' q- ]1 W' n- s4 f; ?$ e0 K6 e
;;
将此次交易的记录加入到customertrade-record-all, _9 V+ N/ L3 |1 T9 C2 S; A
end
: ], E* h! s/ M$ h0 u  N8 f
2 U- [- h6 u% ]& A8 e2 \+ p. f7 G4 Tto update-local-reputation
- h+ \& D6 z0 @set [trade-record-one-len] of myself length [trade-record-one] of myself
9 j2 e% v" e7 f3 u1 ]. s2 X
6 }( t; J+ [2 C5 g& T4 @( w- ^7 d5 t3 A, T1 g6 {
;;if [trade-record-one-len] of myself > 3
' c* C- q9 {9 y
update-neighbor-total
3 Z! Z3 H; a9 u9 P;;
更新邻居节点的数目,在此进行2 p% @9 X3 j1 S1 S( [& g
let i 3
& U3 p0 ?( Q3 M9 slet sum-time 0- j  P" E: z" i1 B$ ?( i
while[i < [trade-record-one-len] of myself]
0 v, J, i/ `: [, j1 c. m0 Y[
5 E/ D( Q0 a7 h2 g- b4 eset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
# R1 c" O# v" N9 I  Uset i) F" @# W- Z5 ~0 S' P
( i + 1)

) H/ Z. m2 M% H]4 }" |/ V& r7 e7 `) J) h
let j 3
# s' _0 {& ?& N5 V( j, a5 glet sum-money 0  L1 F! c( Z+ `* `
while[j < [trade-record-one-len] of myself]
. D4 a( |- Y% |7 D2 _[
6 S; _% q% i7 g7 h# I) U$ X# Xset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
8 u" C. c) ~& Cset j  H: f+ q' d0 K7 I$ D% f
( j + 1)
4 a. |( d1 U* L' T8 O& ?
]6 W# V, f! ]: z1 q: {0 q8 i; b
let k 33 D% g; C* O2 J% T5 q
let power 0
# z/ J9 r0 F7 q' B% ^let local 07 E/ H. q% W4 v2 W2 \5 Z$ D
while [k <[trade-record-one-len] of myself]
6 n! K: d8 q" f+ |[
' t0 ~, u0 l+ ~- V- Y/ Bset 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)
3 h4 }$ V* i/ R& _9 jset k (k + 1)1 P' n# P0 _- h. \! z: z; F
]; w; [1 @) H- A" l8 k$ W
set [local-reputation] of myself (local)
9 Y% A9 |7 y6 |/ y. F, iend
) f. i, U9 J; C& T: \- C$ F) _* G
( [8 g2 c2 S/ b+ T9 P& E: x% h( f$ oto update-neighbor-total
% [: v7 j7 }! j0 d* S: @8 _
! t2 }; l, p* V4 C6 H6 I9 Tif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]+ |0 b* K! U8 ~3 [& s2 `

. F- w& v' n, d$ P
2 V5 E$ Y3 H8 ]3 ~! p
end
' ^! C3 H' I& ]- {- t
: Y4 o, m' ~; C- A( kto update-credibility-ijl
4 s! n: n7 x5 n, r3 a" t; Q5 @; o' P
;;
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 j, a! d9 l; G$ p5 F. w; qlet l 0
) }( v) l+ f# \. `; |9 rwhile[ l < people ]
& n( T7 I2 _& Z7 ^: P;;
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# o# m, y5 _# @1 _7 w6 t: S
[" z! y! K( E5 Z, u4 r
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
6 Z, i6 T5 Q" L7 \3 c# Nif (trade-record-one-j-l-len > 3)5 w8 D' ]8 L, b7 f- j1 l& l
[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/ G1 U1 D, C* m0 l
let i 3  o: Y  U4 i9 J, g7 b2 Z7 r
let sum-time 0
8 U$ C& s) |7 f% P7 owhile[i < trade-record-one-len]
1 V2 p! N0 B, B& `: T[
& U" T! X4 R; G. T; g% }9 gset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )$ U( ~" T" @, z9 v' r* c: K
set i
+ l3 \9 T. Z& J# ^! s( E6 a" `5 }( i + 1)

! T4 g1 b3 @. N0 M4 n/ ?9 m  []
( x7 |5 C. E: B! q1 Flet credibility-i-j-l 0
9 h* c0 t& s# D+ C5 C' j;;i
评价(jjl的评价)0 A! y, p/ B  x9 u' R" B6 T
let j 3
- F! Q, _' d. mlet k 4
: }7 v4 v+ x% ?$ `- x+ \while[j < trade-record-one-len]
" S9 l* ~. w! E! s" M  g[
5 |. T/ z3 u) Y; i- F" b  t+ _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6 c. B* o8 j  ^1 k8 R2 h5 ^2 ?
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)% F& L7 F3 Y6 v, V
set j
: i1 X) w* g$ k4 W( j + 1)

9 E5 O& a9 t* `: |]
% l4 {+ O+ Z( o0 P, 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 ))
7 Q" e# p; _0 N: H4 \4 m
' B$ G$ w0 m3 E! K
+ r: ~& v  D4 b( `
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
4 S0 }* e0 S3 y6 W4 s. T;;
及时更新il的评价质量的评价4 Y" t* Q! I) H, m9 F+ I+ U
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
- n+ Y) R6 Z. f# J3 ~- d" ^+ v* iset l (l + 1)
5 Y& h' }0 }# e/ |! K]1 y, x* r7 i- a& T) M
end% i( C4 I5 v, j% ^
# J2 t! l6 x" e; g- r
to update-credibility-list
( f6 ^/ a6 H8 glet i 0
, v- M4 J7 w8 d: m  T4 c, }; ]# gwhile[i < people]$ i# m) q* x4 U+ `
[
$ W9 I8 d  p( llet j 04 Z! ?: |/ I; B* J
let note 0
, U# K' N+ U( ]- }0 R/ Q, |let k 0( R* l+ `1 W6 A  ^# j8 ?
;;
计作出过评价的邻居节点的数目7 g8 b- _5 j) o& G
while[j < people]
0 X6 \  O2 {4 m; z1 e' J* o[
; `, E- m2 B. F' ]2 T9 \  y1 G5 Yif (item j( [credibility] of turtle (i + 1)) != -1): k8 t! H+ s5 V: \
;;
判断是否给本turtle的评价质量做出过评价的节点
. ^5 B9 p; q% c5 O2 ^! Q7 X[set note (note + item j ([credibility]of turtle (i + 1)))
) z4 O' Z8 _: q5 G1 g; h1 K, h/ W;;*(exp (-(people - 2)))/(people - 2))]

  A( p% [& r; V0 t. fset k (k + 1)- D% b8 Y: t  ?7 Z# a9 P) a
]% h$ N- Y; C( J
set j (j + 1)9 A9 N% H+ o( q, L  F+ w, C
]
* w8 g0 E" c/ f# B+ y/ C  V7 Tset note (note *(exp (- (1 / k)))/ k), d( F* ~; p) l' n
set credibility-list (replace-item i credibility-list note)7 x6 E9 o/ w6 ~' C: Z1 h( r3 M
set i (i + 1)
3 c3 a1 `2 w5 m7 }" O4 Z. X]6 C6 L  n% [, `' J
end8 Y) L  Q2 r2 |5 @# Y2 r
' S2 P$ [! R# k) @7 o: v" T# r
to update-global-reputation-list
4 l" h* h' h5 B# E6 b1 ?0 `6 hlet j 0
& ?# a  A+ U$ G$ z- I! u6 C5 Owhile[j < people]4 X8 q: S2 }' O7 g
[" o0 P& A: z1 y% f! ^
let new 02 y% o# U5 t" E/ I. U
;;
暂存新的一个全局声誉: T+ K9 ?& x) b  F8 Y. S2 ?/ g
let i 04 @% l/ l- S3 b% Y1 p
let sum-money 0+ S: |3 q  b% ]1 F# ~$ W1 A
let credibility-money 0# g1 R$ A- Q( N* G) B. W
while [i < people]0 y5 N, W) w/ L
[
: J2 c3 d$ q0 _* }' \1 x  \set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))3 y4 N0 t7 }2 ~# r
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
; L0 }; d% m- z6 Z& S% p4 Cset i (i + 1)9 b0 k6 y6 W: L
]# P' [2 v. k( a  ]# g4 k$ ]& v1 K8 I
let k 00 k! ]+ O! |: D' u* f, `! H
let new1 0" l: i7 i+ h+ u/ J7 F& J& ^9 k
while [k < people]6 e; L! [' i3 M' N$ |) ^
[9 S9 l! E( ]0 V; G) W
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)" p( |$ J  n  k1 @
set k (k + 1)
6 W* _  _% y0 i* E5 B3 |]
! h! T( L" Y8 A0 Hset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
& S6 D5 \) m' F: nset global-reputation-list (replace-item j global-reputation-list new); G! ^- [( `4 ]" v! F. i
set j (j + 1)* s) h& n3 j' o% T5 @& h5 @5 e6 [
]
% Q$ z  U0 t* `end
9 w! w: {7 S2 W8 W2 I* {6 S5 z  o! @1 J) h, S1 ?% I: Y

& P& X$ `( g% S/ G1 J! A; P
4 m! A- F- `. A7 b9 |0 p6 ]; Vto get-color
+ t- R/ N/ n& U+ y' D. A7 x6 _! D2 A' O8 V. M
set color blue

2 A8 @% N8 Y. t9 N/ y" H- W* iend0 P- [+ m" P, ~% ~) C' g5 l
& h6 d: Y- i# k
to poll-class
/ M% I3 p9 q, X5 s" |+ ?9 Y  Jend
/ o9 h( L3 R& @: c) W* U! z9 e5 x+ p4 H3 X" _! H
to setup-plot1
7 T2 m( w% G2 q- ~/ ?3 C# O/ Z
0 m6 M, T' s) t3 U6 Yset-current-plot "Trends-of-Local-reputation"

5 U, z3 j% D+ E2 `" \3 |' C6 ?$ z  Q& M" H' d, K. ?
set-plot-x-range 0 xmax
4 T& H' V) n+ m8 t' N* B) ?7 A
$ N2 o7 e. [9 ?3 O* O" N) ~$ V
set-plot-y-range 0.0 ymax
$ x, k8 k( a$ }
end6 U2 \, y7 z" K& k9 ]/ ]

0 E$ R, ]$ x/ I: Lto setup-plot2
5 g9 `7 D: Q8 x: `) d  l% n1 E3 L; o0 S& ^1 a
set-current-plot "Trends-of-global-reputation"
6 @! L8 j( {! }' o

8 _2 [# `2 @# A. C7 q  [set-plot-x-range 0 xmax

" Y( _. V0 L. k' ?4 J
& u* U+ {+ |; y9 @% g4 A$ p- yset-plot-y-range 0.0 ymax

, W% [1 O! [6 x: C9 a& mend
) ~; [" i; ~1 K! ]7 j- ]* |2 {7 N  T* C
to setup-plot32 e7 B, u  S+ o" T* ?9 m3 c

8 `' i- D6 N* S) F- fset-current-plot "Trends-of-credibility"

+ ^2 R) K0 R6 }; v' R' Y3 {; \$ e8 Q9 T2 z
set-plot-x-range 0 xmax
! z5 d- I  @3 ]( [& q$ @

8 m0 Q% \' v( |+ V: j- Q: m4 @set-plot-y-range 0.0 ymax
( v' Y' r" @& l* q: m: L; }
end
4 |& z; k  O1 f1 ?5 h1 @6 H0 i7 m+ j' n
4 u5 Y% Q, x$ Y3 V# I* z& dto do-plots
: }! x0 ]' G3 O* vset-current-plot "Trends-of-Local-reputation"& z! `) i' a2 m3 A
set-current-plot-pen "Honest service"+ v6 s! I1 j( |; G; D/ K
end8 I2 R+ G  \) g; ]9 @3 O' j$ T
* U& @5 x6 {& p" k8 T3 k- {1 X
[ 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.- e5 r  j1 A7 ?  q7 ?

) [+ a  }4 J+ n7 R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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