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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:. `  _2 _: l7 ?  {8 m; j2 k
to do-business 6 v& h  z' y( z
rt random 360
! G9 `  D- r" i/ T+ a0 u4 x5 | fd 18 r- \1 y1 d3 l. T  T
ifelse(other turtles-here != nobody)[
2 a/ \' a* ^% o   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.
* E- M2 j1 H. X: u' u4 W- W   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
8 L: ]& w9 i6 {- m, t: W# T1 G" T   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer9 v* o& S8 Q1 A% f% ~
   set [trade-record-one-len] of self length [trade-record-one] of self
; j) W8 P+ h" t6 X5 B) ?) y   set trade-record-current( list (timer) (random money-upper-limit))
3 B9 @: Z: Y+ c3 u( ~2 c" e0 A; B# L* ~/ q
问题的提示如下:6 v" e. J- Q  @
; f- N8 U0 y# M
error while turtle 50 running OF in procedure DO-BUSINESS
9 q- |1 u: f4 b& M  called by procedure GO2 F) A: S4 a' t) b2 ]) U
OF expected input to be a turtle agentset or turtle but got NOBODY instead.. q  c" k5 t6 {( d+ m
(halted running of go)
; [6 l6 E2 L' ^3 ~/ o) D: r: G6 ]7 @+ b" I  v5 |
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~~
4 ^- i3 ~0 k( o! n6 @1 ]* U$ e8 H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: _( K3 Z( H2 C$ r
globals[7 w1 X3 k$ }) C+ C
xmax# C& [- Z/ I( {! R/ N! ~
ymax
5 d2 m# f) u* }+ _global-reputation-list
* T8 ?7 K6 S4 b  j# L+ P+ N
( }; h4 V* E( X% @;;
每一个turtle的全局声誉都存在此LIST( G+ S% R4 K4 {0 _* q$ I/ P
credibility-list
( Z( }$ u. j* |& h;;
每一个turtle的评价可信度
* |  s  ]6 q$ O5 c# s+ Q$ K1 @$ rhonest-service
/ ^; q/ M4 Z$ W, M  N$ {8 ~unhonest-service
  v$ n, y8 D9 Ioscillation8 z& v% J. x" b% k
rand-dynamic5 m! L4 O9 l7 v9 W# N$ s" F' r
]
0 B! x1 v% ]3 [) S; F% J, d; U- c0 M+ s/ ~
turtles-own[
% q8 O! s9 w4 `- q; T6 a- ktrade-record-all9 A, s, e  E: M' p) l6 p
;;a list of lists,
trade-record-one组成1 W; z' j9 i! D( }9 h7 g8 ^  F
trade-record-one
/ t# p0 r. M/ r$ l;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
. |1 @2 C+ E7 ?
! q  O! t" z1 v;;[
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]]# V: V# z8 n6 E$ l4 }8 J  g) K8 \
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]2 {0 w3 F7 w: `4 @. K
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
, i, B" M, }: a& [neighbor-total0 `3 z  g2 I+ ~/ I
;;
记录该turtle的邻居节点的数目
3 n6 E7 s3 s- ?' gtrade-time
; L; T2 g2 ~  ]9 l, Q3 }! ~;;
当前发生交易的turtle的交易时间
7 S; _- M( c& |' B( Eappraise-give7 z' _2 ?. O4 p& v& D
;;
当前发生交易时给出的评价6 h/ N9 V; [9 B+ f7 e
appraise-receive" k( T. g  s, f6 E
;;
当前发生交易时收到的评价, \2 \4 ^0 Y# |5 ?
appraise-time
/ U2 `8 U+ q4 ^8 h) s;;
当前发生交易时的评价时间6 j/ H; V# c; [
local-reputation-now;;此次交易后相对于对方turtle的局部声誉( c& H- J# B7 j* v- l+ u' b
trade-times-total0 {& |4 X5 ~; O9 \+ d
;;
与当前turtle的交易总次数
; s" A' r$ f" o9 q7 k3 e! @) B: itrade-money-total+ M0 I/ J* }5 g0 c+ j
;;
与当前turtle的交易总金额
) p8 f. x1 q! n/ v2 ]local-reputation$ z. T# |& T$ i2 h+ V
global-reputation
/ Z& t8 i' z7 Y' t! J7 C3 j5 acredibility
/ u! ~  e7 G" w$ c7 V" w;;
评价可信度,每次交易后都需要更新
  K& ?2 \- c6 q- W# e+ Mcredibility-all, F( n6 u7 Y% O, g) i
;;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
% b+ A& |3 F/ ]% l# c6 s& E' V' R* U7 x0 R9 ]3 l* ]7 s- b
;;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
7 O. y/ w; C" K# dcredibility-one; W+ k4 ~/ N7 {1 o" b$ p5 S
;;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
4 ]' B8 T/ h' N1 K4 [global-proportion3 ]7 J$ b' V7 ]* x1 F) Z- W5 k
customer' l. q9 t! u0 _5 P- ?
customer-no
( C2 B# z4 P) B& j" t5 g# itrust-ok: b+ k6 G3 F% ], j
trade-record-one-len;;trade-record-one的长度. l% B/ [. L0 w5 i
]
  Y! R" J7 d7 F' ]
- t$ g* }) o, i! p;;setup procedure
$ A8 |6 v, h% w8 j0 K( z* K
$ V2 @5 @! s  G* W! h; j7 P0 A1 t# D) wto setup
" O7 N9 X1 g3 V* W9 t3 a" J7 d7 p- @! Z+ s, J  Q* V' n* ]
ca
, C  o8 d! Y" A$ p7 r
0 V9 W. o+ X3 Q- \' L8 d
initialize-settings

- f2 A; i$ @4 I( D( ~! R7 |( g" b( Y4 p. `- C
crt people [setup-turtles]
9 ?3 Z! q! F9 T/ h4 |; X$ i. d
5 f0 \6 @' G: \9 h& W! J; Q
reset-timer

5 `" x6 a# q" U3 ^3 w" F# |2 K" }; C
poll-class

4 t; k3 u1 Z$ V0 Z9 k& X5 g; ]$ C  L9 z. Q4 v, ?2 d
setup-plots

  |# C) u. i  K: e0 ]2 h; ~* C) q  j8 k! r
do-plots
% c$ a5 `  T' b1 F# ~) e- P/ i
end$ e, S# d! J2 z8 U8 H4 z, j

; a0 R- Y" W' v- k: P; mto initialize-settings* o. L8 g5 f( O- p: r4 @

/ ]; B9 n: ~2 i; s, R7 n1 Tset global-reputation-list []
6 v4 q' o8 m# U9 `; l# I0 M
" [5 F' |; q7 z. r! y% d$ _0 Z
set credibility-list n-values people [0.5]

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set honest-service 0
4 j" L/ I; l, H. c2 X! w( f- |
1 {6 E9 Y; ?2 W9 K+ M& P
set unhonest-service 0

. }* j8 e) n5 T  }7 d4 A, Z: n& ?. O) U8 K0 d
set oscillation 0
$ S: {( ?6 h* d" `1 t5 R

, b4 N" x% L9 f! b3 `3 Dset rand-dynamic 0

0 T1 ]4 w. ]% ^4 }end
+ O* |" _, O% U9 `# B
; x! k) U  ^7 u# A# tto setup-turtles 4 ^. h0 }7 T: _  [
set shape "person"
# l( f2 _) i4 n2 p0 asetxy random-xcor random-ycor
0 w& L" o4 S" C7 q' j$ M; fset trade-record-one []1 t; F4 N# b4 ~' Z( y' u6 @

! Q4 s( r3 _2 Z  Y" nset trade-record-all n-values people [(list (? + 1) 0 0)]
5 q' x/ V: b7 O) Q5 _3 C& l
5 z' |5 H0 B0 k. Q
set trade-record-current []' g) [1 Y* f( x: I, _& B
set credibility-receive []
5 M5 K/ V* \4 f, A( Tset local-reputation 0.5
" H5 I: w1 O. l: V) vset neighbor-total 0; ?) q$ Q% r1 [+ J4 P7 {  C
set trade-times-total 05 F% V7 w+ C% P$ `
set trade-money-total 0
& j5 C4 h% L7 X/ ?& K4 e6 d# \9 pset customer nobody
) y1 W: O# A9 h0 A; ~. z5 ?- [set credibility-all n-values people [creat-credibility]
; ]$ l! M4 M' J' \6 \7 dset credibility n-values people [-1]  o% A! ]0 u& H' ~! e! ~6 ?
get-color
+ S, c' c1 f8 b3 r9 O! k

8 J- @, Y7 Z( ?5 x2 M" O1 Dend
( y9 i+ |; s% E4 j# T+ k7 G
' L8 |3 X% S4 e: s, v! kto-report creat-credibility7 s1 i  j! q1 s' T  [
report n-values people [0.5]& u8 Q' l1 L) J6 }
end
( ~! a6 M. T5 z$ n/ V7 b$ x2 M. e1 F* t# Y& O4 v; h4 K
to setup-plots2 u4 j& ^/ ~# @+ j$ i0 P9 u, |
4 R  L( r: I2 C( Y& K
set xmax 30

" ]; w4 K+ `9 e: X
' O9 q& h! ?% N  M+ b3 _+ J2 qset ymax 1.0
+ O) `5 z: a% j% L
- Z+ B! m& k) D  ~* a0 ]" n6 Y
clear-all-plots

, X; p) r3 m( G* R/ `3 w, ]' l, Q2 K/ k
setup-plot1

: ]' E/ {& H% G' t4 U- o9 m. u/ K- B) C; Z% }
setup-plot2

) W2 l! {0 {: c) D
7 C3 g. ^1 x4 `. ]3 ssetup-plot3
4 c3 a- y+ N: _; J" _: l: R
end
9 E" D" _$ s* [/ _" l# j$ r1 p$ C+ o6 A3 x, v8 Q
;;run time procedures
* P# H1 @1 R* w, K
1 }9 ~  X3 [! l( r5 }to go
+ S/ c2 n! h& A$ C; w) Q( S0 f6 C5 C( x6 k  w' T* }
ask turtles [do-business]

. X; {4 e8 g% Q: L% y1 @3 }$ W, Yend  w1 F$ s4 t* r; x( [2 D4 E4 T  h- H
3 [' ~4 m  b0 k
to do-business
& z& x4 C% U5 v! F2 p7 f# @+ Y# a

, p6 D: `' J0 I! f* t4 M
$ Y" n; G& k6 V+ L0 [$ X1 Irt random 360
4 X7 O8 @# \3 F  f

, ?3 i& [1 d# x5 zfd 1
" d: c6 e; G! E9 _
1 l) ?3 h2 \0 d% f7 \& L
ifelse(other turtles-here != nobody)[

1 j8 M# I! T( ^8 C2 ]6 h" T* A, z$ `: [6 Y, [3 g  t( D
set customer one-of other turtles-here
! R& a: g3 c5 W) _8 j, C  i
6 c  K; A# H% [6 p
;; set [customer] of customer myself
  A& U9 x" s# g! y' M

* X5 o3 Z1 c- B" n+ H, L. C& Uset [trade-record-one] of self item (([who] of customer) - 1)6 J# A& k3 X/ Y( w! m8 K# m" J5 b
[trade-record-all]of self
" d& m, `3 d( ~* O8 i" {;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
% \# ~" ]6 N) H% x3 t  X

! z0 A2 a' x- a7 q: oset [trade-record-one] of customer item (([who] of self) - 1)
* S- ?1 P( z9 T0 t* O[trade-record-all]of customer
+ T' E0 }* N* m6 U& e$ h. u
2 ?6 N7 W. R4 d) K+ P8 c" l. U) `, P
set [trade-record-one-len] of self length [trade-record-one] of self
& R1 p1 J( o1 h- J  Z2 [

& C) L; m  X: u1 A  N3 ?% D6 `4 Uset trade-record-current( list (timer) (random money-upper-limit))

( }& h; ~4 T$ a8 x
: s; S9 l" M& O3 ^ask self [do-trust]
7 D$ X% V) i5 x$ D* C3 P, d;;
先求ij的信任度
: Q; q9 A0 |: v
# W9 I/ k9 R* M! wif ([trust-ok] of self)
* B2 n7 [/ m6 `;;
根据ij的信任度来决定是否与j进行交易[( a5 Q0 X4 g# Q( Z9 x3 }
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself8 W- S; {% Z- S6 R

8 B6 ?5 Z0 O) w1 `! y- S# x[

& j9 d$ N% x6 Q0 @- p) m
/ C; D, w6 {+ y( e! k" Xdo-trade
8 j4 |. E% @8 q# z  A2 E
* \3 ?" X6 L8 f. |" x3 h
update-credibility-ijl

6 U. |: E2 |9 F9 Q0 u
7 |- y: `  I& r3 R& R9 @" G' A- dupdate-credibility-list6 S3 c0 t3 U7 v$ {5 b0 I

9 L9 J# J2 i- t# m& z  t3 n: R4 w5 b5 T: s
update-global-reputation-list

% g$ G! t/ ?) S. C& j$ f& I
3 e6 [! g8 @; L4 x3 M, g$ Ppoll-class
/ X" s4 x0 c9 {( t  b: w

  f3 _5 e0 w' dget-color
& A7 j: @. c. ?! G/ F. }
7 J7 x, @7 x5 ]: N* F+ p  O1 L9 G! [+ G
]]
% E5 `1 N& w4 c# `, }6 t4 [- J9 `& L, o
;;
如果所得的信任度满足条件,则进行交易
1 C5 f) Z, Z: C* H) X5 N3 v' x$ N8 u8 l7 d8 G# c
[

. Q4 d' ^6 K7 d) e! \: c" ~) c# t$ S. p& K- U+ d3 \) c- c+ i. {
rt random 360
% O1 w2 {6 U: ~' p' q, ?

/ C5 e& u+ E) N8 Nfd 1
% d/ V8 ~6 x5 R; l0 u/ g5 Y

: H4 d, c# e7 _3 C]

& Q) w6 b4 U7 `9 T
. r* S2 h+ q; W- s  Cend
: X0 s+ p, K; u6 q1 F" N& W
7 ^' ~" Q8 p3 V' r
to do-trust 1 j" s0 X" h5 b7 A9 g
set trust-ok False
7 u0 v$ T4 o5 ?# _; N1 u- D
2 z- n5 s* Q! }  v) b" P) |/ O& b
4 H& m9 ]9 D/ P5 l7 u! O4 E
let max-trade-times 0
. z; t) |- Y5 g/ Cforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
& G3 T% j4 \' c. M6 O- dlet max-trade-money 0
7 l" c2 O% ?9 Eforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
/ Y- n3 z+ h: H1 Y2 Llet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
9 |; h5 }; U, d+ _" x- f0 X3 I0 o) M8 h
3 d/ V8 a  U+ g5 c  d4 B' P
get-global-proportion( x/ @; ?% k* T* n, D  `# n
let trust-value
  R; X5 M# S, V/ dlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

( n$ t' L) X- e$ F# b1 z5 p. L3 D/ X' jif(trust-value > trade-trust-value)6 i- ]/ U1 ~# l9 L2 G  N1 p
[set trust-ok true]) p* }7 U5 V; Q% b9 n( }
end& W4 Z$ R% [" @/ q

; v  ?1 X7 x2 [+ j( w& u2 Fto get-global-proportion
: ~5 S8 R1 C! F2 }7 Difelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
5 d/ o- ^! t9 o7 S# E[set global-proportion 0]
! ~6 _3 R1 B& h" _: R[let i 0
& t' Q8 I1 T% K3 h, _let sum-money 0: j! T& @% y& d  i
while[ i < people]- t0 O+ L6 K) a. i- d9 P) Z' {
[
! c/ W' g0 ?1 f) p: F9 j  [) X2 Hif( length (item i
4 P; i2 s- Y  R0 ~/ l[trade-record-all] of customer) > 3 )
( ^- _& {8 X3 l/ b0 {( L0 L, X
[
  L( g( y5 V# T+ I6 F5 F; y1 r. E1 Xset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
; W% _: n& G: q' p! W( M8 r]
3 e# T( Q) D6 P$ I5 `4 K+ T$ b]
1 `" \5 [7 [3 n2 w( y4 K/ Z; z. b) v2 _( Rlet j 0
& t6 {- D4 e$ |$ g1 a! ^, G7 s% U3 l3 Vlet note 0% J$ z# k# B' g3 D
while[ j < people]
; W. T/ _3 ^! L6 a* Q7 J3 H* ?[; c' R" s4 u( ~; W! x
if( length (item i( s# Q0 [, q6 L8 F1 N$ d+ \
[trade-record-all] of customer) > 3 )

" T- F  _9 }% R+ q4 d% j+ W) Z* l6 ~[
! P5 v7 K* R" U; Z& A0 Kifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)$ h, Z$ P7 v, y+ V. O
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]; f* m0 n9 z5 u1 w  M" Z) ~
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]/ e' v& X$ H: X0 \- N8 [% ^
]* s# }' _8 D. i. d% P* b
]+ [6 x& M) u- ^  G
set global-proportion note8 j. `1 a2 L. K
]7 i0 l+ W& k) r; A2 W( g* c
end
* ~7 S0 U7 B+ `# n
7 c& v% v2 ?0 \8 \! o0 D2 w! M( |to do-trade
5 c7 V9 Z4 f3 ]; T8 ]7 d/ E;;
这个过程实际上是给双方作出评价的过程+ R& |% X+ {  M0 w& J( b
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价; S) A7 R+ n1 B/ ~% s
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价7 _2 R1 b' z# C* A. ?
set trade-record-current lput(timer) trade-record-current
8 B0 P8 I7 f2 ~8 G6 ^" d;;
评价时间
. f" ?5 v0 ]6 R' S8 @  Hask myself [
9 d" ^- v5 ~2 g( Zupdate-local-reputation
6 {/ j  x6 {% F; q$ sset trade-record-current lput([local-reputation] of myself) trade-record-current  t  j9 g* Z6 t' R
]
0 v) V$ _9 @, W4 mset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself6 W. ?7 E6 |; O4 Y& N
;;
将此次交易的记录加入到trade-record-one4 E6 V: Z: q$ G! R6 T" O
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)- T/ V% x  g! {1 A  o, m6 c! A2 J" |
let note (item 2 trade-record-current )) I  z1 x) _7 e& J2 @3 p
set trade-record-current
( K1 |# j# U. R4 l(replace-item 2 trade-record-current (item 3 trade-record-current))

8 n8 E# Z& Q; q6 Wset trade-record-current
  D4 y, y* y+ M/ b  u! `(replace-item 3 trade-record-current note)% ~5 F( J% }* E- U( E
) I- e3 S3 _: o% L
3 {2 s, e' [+ F% }/ _% |
ask customer [; F5 S/ P6 n7 L# k( g
update-local-reputation9 A3 r  y8 v. i7 W7 g4 p" B) a' V
set trade-record-current* j+ T& G8 O" d- g
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
& C0 u$ v* b6 W- c! p7 Z! M7 a
]7 ^& H6 {) i0 z2 T' U; U/ s
5 Z) f/ Q. T- k6 \0 R
% I( c( J3 s2 ?! Q  s
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer# h% t; [2 k0 M, w# j. |2 h6 s5 z
* v7 R; z! s/ j% A  U7 C
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
" ]/ m5 `( K1 I6 o! Y& g0 M) `;;
将此次交易的记录加入到customertrade-record-all8 I6 s; j  y+ R
end
* K) l0 p5 y, I4 V, C
9 s+ ?: n8 M4 Q! T$ xto update-local-reputation
# S& `  ~$ \. [  Hset [trade-record-one-len] of myself length [trade-record-one] of myself
7 I9 q3 J9 L( }4 g" Z* C5 M, T
; L- k0 n  }1 m% \2 D4 g% D1 m# a
" u; H& B: E* F" v6 F;;if [trade-record-one-len] of myself > 3
* M2 D# x* k' [% r
update-neighbor-total
! a8 I! t$ i( k8 \, L( n;;
更新邻居节点的数目,在此进行
; g9 O( O" V! z1 _+ k1 T) ^let i 3
  M4 \' A. F* }% ulet sum-time 0
; j& e7 Y' u: w2 B& }& Jwhile[i < [trade-record-one-len] of myself]
  r& m& _0 L+ X, H1 j% @: i# a9 P: e! N[
) `  |' y7 D0 A1 d$ U5 @8 P1 ?6 ~set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
7 |+ |7 ^5 `# Z7 qset i( i. l, m. C1 c  q' z0 O' d4 H
( i + 1)
! s" b, N; ^7 T! J, L0 F
]7 l* M' B. v# r* \
let j 3
9 S* G( f5 X% mlet sum-money 0
3 X; Q" E1 d" Q7 }0 Fwhile[j < [trade-record-one-len] of myself]
- W3 C! {" I4 w5 _" U[) M3 j/ T  d2 F
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)0 p6 p0 j. |3 R/ Z% t- j4 |
set j2 x9 o8 z, H. ?* v( ~  s
( j + 1)

8 A, p0 y: _, p' `8 I. P]
0 l  T  g+ ]# z; h* ulet k 38 W% a$ @# j2 W+ `# x( I2 K
let power 0
, p/ M: w  {! p3 c' Z: Qlet local 0
+ r6 k$ I0 A/ i' Z; bwhile [k <[trade-record-one-len] of myself]
) Z0 W/ t7 \; C' v: g  F" v: k+ S[" F% s  w1 }! B) n5 P1 S, f
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)
! P/ s, a) k- v+ I- Zset k (k + 1)- S3 t9 n3 ?. T9 }  d7 }/ s
]) h# G1 R( b4 m6 W3 a
set [local-reputation] of myself (local)/ W( E/ c' @# e: d# r8 Z4 ?; Y0 |1 t
end
6 f8 V9 E- d1 ^$ |4 W3 _
6 }+ n4 Q: D$ F7 S! lto update-neighbor-total; r0 h$ \3 U! f' o) p3 `
5 I6 f. `# [) X/ w' Y2 ?
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]# B! U# z+ {7 [2 Q1 b

" e; |( N. k+ w) F) v
$ |" B; b+ m! _% b0 L3 T" n! E
end
! J: ^2 K# S" d6 W" m! f, X  U! h1 c' N. D( W. D8 x
to update-credibility-ijl
) c3 T& r8 W* ]0 ?) L
5 J) [4 Y  x) C% C: t;;
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。
) u; M5 X2 o# p6 y' ]4 Olet l 0
5 R9 Y# A- r1 P1 ]/ gwhile[ l < people ]( h: X" z/ y; R+ L
;;
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6 K' `* k& V$ r6 E1 A
[1 \' E0 A5 Y' P2 o/ A) T2 Y
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
, _9 q0 @+ w" x/ H6 M$ aif (trade-record-one-j-l-len > 3)( v. h) ?( T: G1 q; {
[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
9 r/ ^7 i7 e! k( C6 y' `; N! w$ Plet i 33 |' i1 l+ R3 I& ^
let sum-time 0: p! H  A7 r4 z0 t! V3 Q
while[i < trade-record-one-len]' a9 M; B* s4 c# Q: n, y
[
6 w9 M" ~. J) ^  T5 T) u0 b5 rset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )9 q) s5 H& v/ n
set i
  l; h" {* |0 B5 Y# @( i + 1)

6 q: \3 i' n. @' m' |]0 ~% I4 @) E$ a/ N
let credibility-i-j-l 0
/ A  T+ X; I" U9 g' y& f;;i
评价(jjl的评价)/ L1 H! T1 W- q5 v8 ]
let j 3
/ t2 Z/ d" D0 i  N% e6 ?let k 4% `0 G5 m4 L8 \+ ~0 l0 m
while[j < trade-record-one-len]1 b8 h; o3 S3 o# O6 l
[7 {3 t1 q0 h: m5 O0 [' l% R3 C- I
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4 g# J+ c4 t3 U$ M" g% S# y
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)& @5 K7 ?0 c2 ]5 }* q) n4 b
set j2 x; e) V( B; K
( j + 1)

  f. _  i7 }7 Z$ w8 p9 h) G8 N]" O- [4 f/ v7 o  A( c0 Q% 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 ))* r8 R* x4 M0 O

+ i5 ?: e! c) E2 C" |4 O# h

% x$ g& |9 ^: Y. Q( \9 _% N2 wlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))- P  m" F# `' D
;;
及时更新il的评价质量的评价7 \1 `1 y. w% H/ `) J# f! ?
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]! q0 b& w* v$ \- j
set l (l + 1)
8 K0 ?: r' i: O5 f]1 i* D7 v; |1 b1 i
end# H5 B/ n9 H, x; Y1 i

8 r" b) b. z8 A$ J' I7 Fto update-credibility-list- c8 Z' v" \- _5 r
let i 0
3 K8 _3 P. X+ P# |while[i < people]
2 v  U& B, \" F" t4 [) f[& _. r$ X; d; T
let j 0
" Y: h; Z$ x0 \% Glet note 0  D% f  K# T+ z
let k 0% S5 N+ T# J& E6 _& D1 e
;;
计作出过评价的邻居节点的数目
6 V" N- b& O& o0 o2 \+ @; L1 G- dwhile[j < people]7 L7 g* K/ Y/ z4 f, V
[/ G! n1 b% b7 X% ]6 x% W, i
if (item j( [credibility] of turtle (i + 1)) != -1)
) u3 B7 p- F/ g3 o6 Y& t# {8 ?1 T;;
判断是否给本turtle的评价质量做出过评价的节点
3 `* ]8 w& |5 @( p: n# C[set note (note + item j ([credibility]of turtle (i + 1)))
) U  b- g- M; y6 D3 c& i4 ^& k4 v;;*(exp (-(people - 2)))/(people - 2))]

7 M+ H. i+ L; @& \) Tset k (k + 1)
8 o8 I4 z) b. }) x! n7 Q]
1 {0 A$ h" f- S4 S# @/ `0 I6 Eset j (j + 1)
8 @: I4 Q; l# i! H/ T- u; S6 o]
- e/ b( T0 g" R* c; f( Kset note (note *(exp (- (1 / k)))/ k)
  f& g3 }+ R0 U4 M) bset credibility-list (replace-item i credibility-list note)
& p$ h# `# a8 u9 ^set i (i + 1)9 C: w4 d# t/ Z3 |( O$ [
]
. P! Z* P; g5 ]$ ?! q2 @end/ n! l1 S2 V8 T' x  F) n. @. N1 y2 r

( I8 x2 C( h+ o$ h% e8 t3 Gto update-global-reputation-list
: q$ Y6 j0 U, Y5 E0 Dlet j 0
! q1 y6 ], \9 a' M' C* t1 g  m. M: T% iwhile[j < people]5 n" ?1 U: b7 e# n( A$ d
[! x% z/ s7 R1 ]$ B
let new 0! r2 G4 ~/ [! f% N; E; s% y
;;
暂存新的一个全局声誉
3 S8 v$ s4 [+ ^" @' z5 Ilet i 0
$ B) n% r8 |' ?( U2 ]4 ulet sum-money 0
, R/ _: s" J, vlet credibility-money 0- t% L9 y- a6 }% l4 R
while [i < people]# N: l/ p9 x/ O7 e/ l9 g0 p
[
% v9 H9 W7 |- Dset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))1 H5 H7 e8 Y! R2 u/ h- Y
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list)), ^7 J  t5 {7 U+ j1 d- f* h
set i (i + 1)6 k1 w/ b4 j0 T  [$ [6 C, ^. c  T
]7 e2 G$ h/ X/ @" O% }
let k 0
  j9 v4 x$ [6 P6 G! h5 a5 ^let new1 0
- F. r: ~2 L  O* |while [k < people]
* J2 P! `) g% H8 h, ?( e[7 M8 L5 I; Y. b% }
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)7 E( K' D. O  x
set k (k + 1)
$ x( Q' y3 l5 m: l0 r$ W1 A) z]
6 n- F- Q* G6 w. r# c9 Y2 F3 t% a# Vset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 5 n' \! l/ Y, b% S8 K
set global-reputation-list (replace-item j global-reputation-list new)% l8 S% M7 ~, v
set j (j + 1)& H0 `' e7 B) N$ y
]
) I" q' H( h2 X9 zend& g4 R* \$ j& k# {

' l9 |  J: i' n% `2 f
, d3 E: S, G! {1 A: a) H) w' T: f6 }
to get-color
! x) X# ]* \3 }4 E# N6 a5 p# V3 t3 E' `" \; r
set color blue

( t  N% g* R( kend. y# R8 c4 q$ a5 f
( ^: s" C- T2 M4 \" e
to poll-class
, c! e6 _, G' p( O- uend; K; z& \1 I8 d  V$ O6 A0 j' S

; X) e+ r3 {% f+ T. Ito setup-plot1
; `3 v) P. e) k: N3 l8 D/ p: ]$ E; p9 @& H7 m
set-current-plot "Trends-of-Local-reputation"

0 O! F% l/ w5 y. T5 L' k1 C& z! {9 _) u/ p+ V, Z
set-plot-x-range 0 xmax

* h, u8 z7 s1 r% q# y; e/ F( Z# I; W: Z* [: M
set-plot-y-range 0.0 ymax

2 Q. m& G" e; H* Mend
. g3 W* @5 B* h; B$ R- t# Y& K% B5 ~1 t" A4 c& ^' o
to setup-plot2# g9 _! j" a+ {

, U+ O9 w  j1 Bset-current-plot "Trends-of-global-reputation"
" r: B% }( t/ v: U

* l1 |" R. I* f+ r' Tset-plot-x-range 0 xmax
; R9 A# u6 v& X

* z* l/ S2 Z( G: E, u, Sset-plot-y-range 0.0 ymax
2 R) x& B9 A8 ~
end( o! D; ~+ [! i6 H6 q5 R  M  L% r; ^
& `4 [1 W' C$ T; ~" S$ E
to setup-plot31 A0 q# H1 O2 S* D; c
& g: e/ J- ~+ l* ~( c
set-current-plot "Trends-of-credibility"
7 v" u' _' n  r  ^( [3 x
( {6 z; ^/ V) V* u& r+ u: _
set-plot-x-range 0 xmax

' ^, b1 W, X/ k& q! y, @2 ?8 I' W2 |+ j( h, @
set-plot-y-range 0.0 ymax

+ Q) o' ~5 U/ @' T: {end
% M* h4 [- Y% c0 o2 e3 z3 }% {- s7 U1 T( k5 J
to do-plots8 y& M4 F7 |& E- ]4 H
set-current-plot "Trends-of-Local-reputation"; ]' N5 q9 d( @: M
set-current-plot-pen "Honest service"
9 ~( B- G' x- Bend6 C7 a2 D9 s& u; _( S) ?' b, Q, _

% {9 i3 y% m) H8 [& j  n  ?[ 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.
- o% i3 V- N( ]0 Z& k4 l2 L$ w9 `
* k# ?% N, n, \% ]) n/ |3 d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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