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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:
# ]5 X0 }5 @9 Y7 ?to do-business
) r% c  M, G, h% S& ~) D  o. b rt random 360
8 F7 [- |1 Q1 `/ b& w5 D1 i' o3 _ fd 1* x% ^! p* W9 C7 k
ifelse(other turtles-here != nobody)[
% q/ {" q$ u3 M) O4 f  o! F   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.
% H( a9 w8 F* C' ^! I   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
7 Z' H. r& W' s& z8 T2 F( A   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
7 }, x! G6 @+ @: l! {: E   set [trade-record-one-len] of self length [trade-record-one] of self
& x" k7 v6 v: G8 O7 z   set trade-record-current( list (timer) (random money-upper-limit))6 A1 \+ {/ m/ s& t) M: Q
) Z: s: m2 ?" t& \5 b3 O8 p
问题的提示如下:1 D: {$ R/ _  E0 T9 Q) u$ f, P4 D! q

; c/ _  }& ?( J7 O2 W' `$ [error while turtle 50 running OF in procedure DO-BUSINESS$ I, [+ @: o+ @! Z" b% m0 [
  called by procedure GO
# n. D/ ?  H; ^- s2 TOF expected input to be a turtle agentset or turtle but got NOBODY instead.4 p2 W* T+ A" N+ {, `$ q
(halted running of go)) n, a. N; p4 B& ?

2 n1 ?6 s3 I$ o5 X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~~6 m; }4 `* L+ Z' ]( e/ 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
% k3 T  s* A+ pglobals[2 `6 `& B# A. i& ^: [3 ]
xmax% e) z4 Y5 V" s3 u
ymax
9 x/ _4 l$ B& F8 N1 C, O4 `global-reputation-list
& L4 ]7 W: P' ?% T  X( f0 Y) M5 T8 T6 P% b7 t
;;
每一个turtle的全局声誉都存在此LIST
1 s& v* }) ]; S4 L! H! ?* u6 Qcredibility-list/ Y" A& o) a1 J3 C
;;
每一个turtle的评价可信度- c9 h2 B, r, ?% H. @4 V3 A
honest-service
' L7 g: m# ?2 c) N& g- S5 y7 wunhonest-service
: @  i, T0 E% R6 K6 C8 x2 n0 Boscillation4 r3 M, @0 J0 [* c
rand-dynamic2 @* d) y. k0 h, q3 z; B4 \4 ~, X% f1 M
]' b" L  ^6 N+ p! g# q
7 c' M- \) ~( M8 g" d
turtles-own[
6 y1 A/ q$ r5 W. y, U7 y; a6 Otrade-record-all
: X4 q2 q* @( s* K& E  V;;a list of lists,
trade-record-one组成
- N9 y& B6 ]9 K7 y: ptrade-record-one& ^0 g: d7 ^2 Z6 X
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录2 a7 E& a. d; r) a' p
- p9 R$ S( U% V! f0 u* ~
;;[
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]]
" B1 g. Y/ Q& p, H4 Ftrade-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]/ j2 E9 t0 ?% l) a0 Y( p1 U
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
& S  k" Y, \2 u* m/ k9 Oneighbor-total
1 _- ?+ ^- h5 s- x& k2 M, c  E;;
记录该turtle的邻居节点的数目
. x5 h2 S$ ]8 Ptrade-time
. s' n& T+ U& a2 Y4 Y& i' I;;
当前发生交易的turtle的交易时间: Q" e9 f7 v1 ^9 Q/ |1 [( \9 H) H1 S
appraise-give* b! Q; h; f: j4 n) f7 g' g2 N
;;
当前发生交易时给出的评价
  Z. z0 h: D5 P& S1 Vappraise-receive8 B5 _5 v+ T5 G. f7 N3 O3 l$ @- \$ y
;;
当前发生交易时收到的评价
1 _$ ^' S- A( M4 A1 n4 P  ~appraise-time
. ^' [' J% O7 I;;
当前发生交易时的评价时间
$ q7 p9 r: J% P' t( P8 |  Elocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
) P4 N# Z& ^0 a* U7 K8 j0 f& h. Ttrade-times-total! b& O  h) W5 y
;;
与当前turtle的交易总次数3 ^/ n+ J% v7 e6 v+ D' Q# R
trade-money-total+ i1 [1 a- _& ?4 T
;;
与当前turtle的交易总金额
% L/ O) x; U! T4 T7 a5 ilocal-reputation' d* |' k. F5 b
global-reputation$ R1 o" I4 k; u! f. X6 u: ?
credibility
6 R9 o1 ]9 y( P* n/ N8 q;;
评价可信度,每次交易后都需要更新; Z/ S5 ?4 {+ w. [  H
credibility-all
# q. H7 _- V4 V& l;;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
) X6 Q9 M6 \) L' L9 T( Q* D3 \; ]$ W. y# |8 S
;;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
* ~; A0 e* B' Y% M3 n1 t5 a# \credibility-one
7 D( Q5 Q$ x0 |;;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people7 U2 G- z# Z2 o% K1 M9 S
global-proportion$ A* l) V7 v8 z5 \7 O% Z+ {
customer
6 w# e+ Z9 e( [3 |- d) a  mcustomer-no6 y0 Q' Y( l& d- s, d
trust-ok( E, ^+ t; Z9 `8 v9 G8 X% E2 V
trade-record-one-len;;trade-record-one的长度
+ o+ u. M, u0 l) M: g]
1 w+ B7 i) G2 c2 Y3 }
, y* h8 w0 V% H# w0 z% r;;setup procedure% |# c# J/ o* c: X: I

0 O" ]7 `3 G6 ?$ i7 q( Tto setup- l  b- I$ F6 N. N6 ~

# o/ V' a! H% \# \$ }ca
1 q/ V, l/ Q5 i, Q( C, J

, j: p3 G9 O( ~, vinitialize-settings

; H* O/ ~; u" {" [
9 w  V. Y8 {3 I, `" Y, F: ucrt people [setup-turtles]
8 M4 z# f0 r" b2 g$ j& d

  K4 n3 }6 I: O3 w+ l) W3 areset-timer

4 T# K7 X2 G# b, _3 D3 s( p$ \  ^
3 c( T2 x2 }; Qpoll-class

2 V" k% s' B( S* Q6 S3 n7 G$ U; s- p1 Z
  z/ O8 O& P0 G) usetup-plots
4 ]; O4 K* P1 g. h, |" l
) `! f  m0 N. q, B6 x: x4 I  @
do-plots

" N. Q' P  d( c3 V5 Z/ R% gend
! {$ O' p% s2 R6 G; n
3 l' W4 m  F( @% f6 e8 |to initialize-settings$ b, m! B! B) S4 l, Q7 x
3 s/ @- M. Z' x0 q' W
set global-reputation-list []

$ [* J( g: `. q2 A$ h
7 H" q0 |( S- a' n( {% f% zset credibility-list n-values people [0.5]

& @2 z, C9 D* N- T! ~
" K6 c- z# X: ]3 |, [) ~set honest-service 0

6 Y" F3 k) E: j3 s. O3 p' ~
8 S0 ~' C9 @1 P0 }9 X* zset unhonest-service 0

9 b5 P' [4 l; w3 b
9 P1 q6 w* U8 u! s  a: Pset oscillation 0
$ N' L( ^2 I4 [, Z$ H7 ?! m" K! \
" b' I" l8 m& s: w0 j. g% z4 A
set rand-dynamic 0
# h# @5 s; Q) y7 x
end- \- l# C" `, s* @1 `
0 `1 W, H7 V0 G
to setup-turtles
8 U$ P( p% S2 B. f7 Wset shape "person"& b! y8 S) V- z0 Y, |2 j( s' J
setxy random-xcor random-ycor
, f" J9 c+ M0 W* v/ d: rset trade-record-one []  a7 Q0 |6 E. e  h
( p* C2 N" X$ @8 Y3 I+ X
set trade-record-all n-values people [(list (? + 1) 0 0)]
/ a/ W* ]6 e& e% C: J0 G, F

+ V# k, @; H* Xset trade-record-current []( M: ~; n' ~# k6 A$ O3 z  \4 g
set credibility-receive []
8 {, X: g, {+ C7 l! sset local-reputation 0.5
1 l, G5 T  t* t8 Q& J" yset neighbor-total 0- F7 q9 `; H3 ]6 z" }
set trade-times-total 0- @: K# c& V8 f6 ]. @
set trade-money-total 0; m" {2 }9 [) M, m% V  U" \, H. [
set customer nobody
* Y9 `) t3 ]2 f0 E/ R3 |set credibility-all n-values people [creat-credibility]! u3 |0 @# _0 U% A+ R0 q
set credibility n-values people [-1]8 X# H: \. b2 ]% ]  s+ J
get-color( I8 }1 L$ H- P6 I7 e: C2 J/ U

) @% L3 K8 t% m, rend& }& `* d& R3 y! J3 @2 M9 }- S
+ ?' r- l6 J) u& f" M* r. n
to-report creat-credibility
5 n; b# t+ b$ c* Greport n-values people [0.5]
7 l$ n+ C. g2 D& v# Yend, v" D, l$ O" r, {' h

7 m4 W: v9 Z# F' j  P# j! R/ Ato setup-plots
: P' ^% X: X. n) N+ s% y% j% S; D1 j  P( R2 k9 A# G2 J
set xmax 30

9 x% F/ i7 A' q1 V0 F+ r9 d. i2 V' h+ q( J% Q7 [- {  n* e; h
set ymax 1.0
# E+ `4 d3 ~5 {0 D3 O

& ~3 p, l  E: G1 R, |5 ?clear-all-plots

0 l/ u3 j: T8 |% g4 W# d
8 c6 f  F: U' X7 E# Bsetup-plot1
5 R/ H" h0 ?( U3 ^0 ]

4 {/ D8 J% g4 w. vsetup-plot2
  A% s( z+ U( v4 Q# d! e* }" J

2 r5 A; d, T6 m" f9 Dsetup-plot3

6 i6 T( D. E4 I/ v2 R0 w7 Hend# o: c- C' M% i+ C- a9 M8 N3 f

6 I/ p1 l! ]" a. n2 b, ];;run time procedures9 y: v' O0 }+ o: I8 Q! q1 T! n
* N, V) w* r5 o; {
to go) R  a. g# y5 {% o& E" W

. X% ^4 l$ ?0 k" F* M# d2 }$ V9 K$ J6 Aask turtles [do-business]

  q' A! A  s1 iend
( {# v4 p# A3 n6 J* [
5 G* |, d9 C8 t: U( Fto do-business
6 i; {! F" |' R
# h# e' J$ E2 ]7 ]  K2 M" y

6 e1 K* z& s8 W% prt random 360

& Q/ S9 r% y2 c* _+ _* i  E& `5 p- G& d5 J, M* B% B( k; X
fd 1

% K, n6 w# [" o2 v2 l9 {7 n3 M8 V7 o4 q9 j, r+ z1 [
ifelse(other turtles-here != nobody)[
" a5 \3 e5 R/ F1 W  Y& W& O

7 ]: L( G5 h. W+ Aset customer one-of other turtles-here
! J6 o' f% ?. r( X. i# ~
  i8 F% w; o6 K' ]7 w" p
;; set [customer] of customer myself

, S: |& D0 G# N) F$ K) P
, U* u# q; b; t3 r3 hset [trade-record-one] of self item (([who] of customer) - 1)
" l! E7 k1 o+ y2 m$ [/ i% w[trade-record-all]of self( d9 x" t* I) w) |
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
3 `9 {7 Z5 {& q, q6 `# b7 X, O8 v' q

. n6 X7 B! a' o$ ^2 iset [trade-record-one] of customer item (([who] of self) - 1)6 S0 E0 o7 V, m  `
[trade-record-all]of customer
* ?  E! p$ [) `' m

! S9 Z" I( {+ O6 W3 oset [trade-record-one-len] of self length [trade-record-one] of self
; E( `: L) K& T3 q$ u& A% m3 `

# ~1 q4 c- }; Tset trade-record-current( list (timer) (random money-upper-limit))
6 `0 c' B8 \! b0 B

6 w: K6 X7 k- m8 Z& @2 o6 Jask self [do-trust]
: ]% @0 `/ m& z;;
先求ij的信任度( w0 c* v# \% ^5 Y3 [7 a0 k$ o

$ x+ n& D& `& a) g2 H6 Pif ([trust-ok] of self)- X0 v2 t  l0 v5 e- D( K
;;
根据ij的信任度来决定是否与j进行交易[- p6 D: Y' ^+ o0 T
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
7 [' ^0 C! r% n; J4 v5 E$ Z: [& l, z% S  p' |' a
[
8 f: a4 P2 a5 x" B+ @/ @' P
+ _, Q9 c3 M9 t- e* C- O' J. S" u
do-trade

8 D6 {) {; h. @8 g9 _1 i( m, I
7 n! v! r3 K0 ^( g6 i: D" cupdate-credibility-ijl

5 a0 Y7 Z" z6 A
* ]' I: J" |: c0 G6 mupdate-credibility-list
# U9 C) B' X: Q5 C1 o. a
( h+ D5 q; L& ?9 I$ h
% [7 ~/ j# a- D
update-global-reputation-list

7 d& @. S, j* X; Y, {0 K
; J: C* \, B1 |poll-class
% {* [" H2 i9 Q

) ?, H9 b" B3 ?: K& M: `& `$ Mget-color
5 F" T+ i4 h- u7 V: e

6 p& e% ]  Z# t! `  Q2 i]]
: W- g- s$ A1 y: ]3 c5 P* n$ F" F5 _. G
;;
如果所得的信任度满足条件,则进行交易6 g) h4 y+ V; u' H- d/ o6 a: l

! e" l/ A8 P7 V3 e+ m  m7 Z[
5 S" @5 G% l' M$ y% ]+ @

& @+ C1 j) ?* K; _rt random 360
9 _$ u( P  o, b" k. P, `# _

7 L+ D9 W7 @, {! n2 B! qfd 1

& i9 {( R0 @1 e: Q
! q# U- Z" p0 c8 U]
" r: d; b5 y/ M' R+ `
+ S# ~4 X+ x$ z
end

3 |: U& D7 g1 H9 _+ X, l8 U* Z& M. P0 ^
to do-trust
9 t* o/ L+ j. q+ z0 g- O2 _/ Y$ O2 Vset trust-ok False. D% m0 q- e" a. S" n5 V. v
! G6 _8 }) Q) ?; a4 i0 S
% D# A! }8 Z5 q* X# m
let max-trade-times 0
2 C" j: c! w' M4 E, Yforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
" V; _' L- X$ u4 \4 c. Ulet max-trade-money 0
" p: T9 q; C8 O' Wforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
8 ]( f1 ^2 b4 c* Z8 d0 v, Dlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))  @) [) D5 m0 \" [3 [$ `

, U9 D+ h+ L6 A
, n7 a" A- ^- z
get-global-proportion
/ D9 c3 S, k$ Elet trust-value
0 z: l: X: W6 }7 b3 u1 zlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

; b' ~( x3 c  }# P1 Pif(trust-value > trade-trust-value)+ ], U) _9 F% U7 W* b
[set trust-ok true]+ J& v2 C( i7 M& l  C
end
- Q9 D) I1 n' R2 U/ O$ i7 i6 X
) z* D) F+ t/ ]2 e/ X! }) A- \to get-global-proportion
! Y" Y- \6 X/ p2 A5 m9 |ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)% z5 l, x+ h8 l9 x) u- b8 ^
[set global-proportion 0], j( }  i) R5 a+ s
[let i 0
6 o1 p4 ~' C# `/ r9 zlet sum-money 0
; v8 s: X2 F9 D; q" I6 Twhile[ i < people]- P9 e( ^8 f7 [
[
# [& \# g+ O0 K; S/ q7 W- C  V! Zif( length (item i( H1 n) n8 g* t4 ^0 E* D
[trade-record-all] of customer) > 3 )

- n3 _9 c) d; m5 j! ]" d[
3 S4 H; [! t, _) M% rset sum-money (sum-money + item 2(item i [trade-record-all] of myself))7 }3 t* j! T0 f& V5 \/ k
]! t0 B3 i) i1 H2 G
]; v. C9 [4 M' B  J
let j 0
: n2 f" ~& T% H* ?6 dlet note 0, T, i- n6 S  l* B# N0 |0 j
while[ j < people]; @9 }' T8 G4 h
[
! w) r; X5 `) I0 J6 Sif( length (item i; c2 w5 ^& W. f1 U6 G. ^
[trade-record-all] of customer) > 3 )
, R. _. y% b/ V; p' C2 g1 u7 k) Z
[
1 ^% i* V% g  V* e" gifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
9 X2 m& |6 R6 [1 d7 X& G[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
: w& K$ M% t0 a. d[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
# D9 p- h9 A( H3 ?, d]
6 g8 s$ ^& o. d& d9 X6 j& a5 m: ?" b' l]  _/ t0 Q3 l+ A+ Y
set global-proportion note
, W5 {2 J6 [! N. d]7 c1 R. m7 s( E8 v( H
end3 M0 s9 D9 \. L( ]  l& h

( ^6 q" l! I& i: S; m) N4 o/ _  u7 uto do-trade
) g# ^7 h5 s  O" f/ D;;
这个过程实际上是给双方作出评价的过程0 f  O* X1 h9 J; n: P/ L
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价9 e0 s! z$ G$ m* ~) v
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
  ~% F! _" S. q$ t5 ?1 W* Tset trade-record-current lput(timer) trade-record-current
. g3 [( d+ o* |5 K* k;;
评价时间# T. ~: O' U8 O, a9 F1 k" @) v
ask myself [4 ~7 u% C! U: R3 |% ~- z
update-local-reputation2 o3 i- R# Y& N5 b0 H0 j
set trade-record-current lput([local-reputation] of myself) trade-record-current; k& G7 W- |1 }% Y8 K, y6 P1 i& T
]
" ~0 A" n3 c0 b  a- r2 ^set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself8 V. ]& Y3 @+ o- r+ l! P
;;
将此次交易的记录加入到trade-record-one: q2 L$ S$ G8 ?$ h6 T+ t1 \5 x
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
6 G" Z0 ~1 y4 j6 ]! @let note (item 2 trade-record-current )7 S% K( N. B# }8 q
set trade-record-current/ P) q+ R) i; N; N# Z. _* C
(replace-item 2 trade-record-current (item 3 trade-record-current))

) f6 q  U5 x& ~2 vset trade-record-current
( T- O' Q% z! a4 x5 |(replace-item 3 trade-record-current note)
* R; t4 O# C& l9 B& G' M( \
( _! J- W' c+ F( j9 y2 d* `6 [

7 x( E" M, G& X$ ~ask customer [
, V5 e0 R# ]: i4 L. Jupdate-local-reputation7 F/ i' V; o  a1 J% x
set trade-record-current
7 H3 ?+ o/ P. w7 S$ b9 i3 J(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
& p  g  c( m7 p& g4 B$ Y* X* d
]8 [) z0 n+ {  g, F
+ b7 H9 b* l, Q6 v* k4 G* t- b

) {5 K3 s1 U( v( [set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer3 @: b+ W1 ~& F5 N

; [' ]" P. c6 I1 g* Q/ ~set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))$ W7 ]+ x/ E/ Q' U- y
;;
将此次交易的记录加入到customertrade-record-all* o! B/ g' P+ m8 ?) i3 G% p1 U! Y) K
end/ c4 I/ q% K! l

+ a5 Y5 \) v4 Z2 |3 Pto update-local-reputation
) K2 T2 P  e. f. K0 J9 D( F8 Vset [trade-record-one-len] of myself length [trade-record-one] of myself
% [8 o0 B6 M0 l  v( r# Y
7 z; R& @0 q' b1 c: C5 @6 h' I: }: D4 }4 {) _
;;if [trade-record-one-len] of myself > 3

  q" T. V; Y1 m: {/ m' v" d* eupdate-neighbor-total
0 m, i* k$ e2 n4 N: ?; W; x6 ]' _+ @;;
更新邻居节点的数目,在此进行
5 H; F2 ~( U% t, Clet i 3' R) }4 G* N2 c; q9 A( Y
let sum-time 0
' Y7 m) E# I8 N8 C# pwhile[i < [trade-record-one-len] of myself]
& ]7 p" P( }  P. L[
2 o0 x0 U- q# _8 |set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
2 H' z3 S. N4 H" g% Pset i
! y/ I5 `! M) R1 ^. K- _% p9 ~( i + 1)
( L: `  \7 X, u; ?" R- f
]1 U0 l) C) _5 d' b
let j 3$ b9 s- F$ |3 \/ D' B: Q
let sum-money 0
4 Y! Z* Z' p. N1 `. jwhile[j < [trade-record-one-len] of myself]6 D# z0 m. O) F; ^8 q- g6 V
[
* j& W# f* }9 i! F! r6 ^: _5 ~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)  D. N7 g9 k  u- i2 C: q
set j
9 n- w- K' r% e0 p' h; I1 n& l( j + 1)
+ r8 o0 x$ \0 V2 O& O0 d; q
]$ D6 ~* r. I" I: _
let k 3
) P5 O* F4 j7 l0 X/ b4 g( s- X) K  @( Plet power 0
3 T+ T0 @4 k" c2 U7 k0 m8 Qlet local 0: B2 T* [6 a* Y& U! l1 _- A  l
while [k <[trade-record-one-len] of myself]; d% U9 S2 j2 O( Q
[- v. Y" x* F4 C  q6 _  x% 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) ' `' @2 F3 J; f: b& a' i4 L
set k (k + 1)2 y% D; w* a. z5 L1 S$ m& C& @
]
  X( r7 a$ A8 m$ r6 D* xset [local-reputation] of myself (local)4 ?6 L  r$ o9 _7 D$ V8 M
end
  ~4 x& U( P2 u( P& ~3 \4 ^  @/ d6 [: @
to update-neighbor-total
  a0 l/ K9 R6 E4 h. q# l/ N
$ Z" o( h( k/ O$ j  A: t! Pif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
6 o, L9 R( y6 o7 k9 g3 Z/ i( x
7 d5 H6 v- p) v& F) @

' d) C6 F# R' V. q1 p& aend
  O2 S) f6 V" M! D  i+ R6 e0 ?* H
1 o  \' p0 Y  m: Z! Mto update-credibility-ijl
/ Z  M6 ^* h4 _) ^
5 ?% t8 N) b* V: h;;
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。. c" n; }; Y/ O( q* c  ]5 [- E5 ^
let l 0. C$ }1 Q9 W2 T5 u! M
while[ l < people ]
& }1 M9 }' x, V) k# @; G$ V;;
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, H  i! |5 g) P- X$ Y
[! k" a) S, Z: `) Z+ F
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
, k/ s5 N4 B8 X- @/ eif (trade-record-one-j-l-len > 3)0 u; I5 R8 @! b0 M( s: F
[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-one2 d0 m; F9 ~* J( Z7 ]
let i 3
: Q1 |/ L9 v/ M* o8 b1 nlet sum-time 0
2 _, U" J! g" C7 \; d2 [while[i < trade-record-one-len]
& `' a% l. ~8 `) U$ R% y1 ?, a3 z[" ]- x2 }$ l/ j! I5 k  `! M
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
* I1 ?5 j. Y# a: lset i, v9 y" C" G* }& F) r
( i + 1)

' ~% Q0 E' K+ O]
, V/ P0 e( o, Ilet credibility-i-j-l 0) f# R6 q( W+ \' F! b5 A1 P4 A  d
;;i
评价(jjl的评价)
' h% h- U% K! d% {let j 3
) I% w6 \: O4 N7 Llet k 4- R6 c; I$ T8 Y; X  i" k
while[j < trade-record-one-len]
$ `3 v! s" `) D% K/ u  f) o1 E[2 ^3 X$ J8 F) j' f* s9 J6 A- `
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
% S: l1 I2 c' o" Aset 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)
- [: ?8 b: q; ^1 J" L& p( f' gset j
: }  z2 t+ J8 V, Q, W( j + 1)
5 f. V$ V% W/ a  W0 }- V1 y* E
]% p/ k( C# `* c! x# U
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 ))
- G# C, l2 ^% R/ V
/ K8 l# }; k6 X; E+ i3 O4 l6 M, f

& h: g7 Z/ t; a2 N3 s6 {' h* Ylet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
: g/ ^8 W6 ^  \;;
及时更新il的评价质量的评价; {5 X: w( |) B0 v; V5 ?# J- W0 T
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
. {6 H' R- g3 x+ T3 eset l (l + 1)9 J. p+ c, P/ U: s( _% p2 M8 l
]2 a. {, B9 N; d$ q. Z3 P; q
end
0 H$ _2 O& h* z& V. i9 Z% c+ O& p( I7 g- _
to update-credibility-list  t/ t, k+ z2 A3 ]
let i 0% E5 o9 Z! Y& U2 q' O7 o; @, B
while[i < people]
4 o$ O3 w- U( a9 s5 [* k7 V2 {" F6 C[
/ c' v* V8 ^0 U% F. X, {let j 0# u9 U8 r7 g9 a3 D& l$ x
let note 0' [2 M( Z4 \7 h/ ^! Y0 Y
let k 0
0 [7 q9 V0 a, C! a;;
计作出过评价的邻居节点的数目8 m1 w! ?9 h" N6 Q' M0 J
while[j < people]( K4 a7 c% t6 N; m
[2 t* ~- o2 j8 Z9 b) |% T
if (item j( [credibility] of turtle (i + 1)) != -1)' g9 Y/ A* H: v' Q8 [/ ?8 J- [2 I
;;
判断是否给本turtle的评价质量做出过评价的节点
4 s! x5 K1 G% G  Z[set note (note + item j ([credibility]of turtle (i + 1))): E5 \' j3 o! C
;;*(exp (-(people - 2)))/(people - 2))]

! }3 O5 O! D7 \3 [' D/ G4 Oset k (k + 1)
# _" E, c; S- K; Y/ c8 T7 i* F$ ?: W]
$ Z- X! j( Z9 H7 T3 e# R9 Mset j (j + 1)6 J# t9 g) n" p+ e
]
( g7 E8 d+ Q3 n  Fset note (note *(exp (- (1 / k)))/ k)8 j0 E7 h$ x! P$ a6 i) x
set credibility-list (replace-item i credibility-list note)2 [# X; I- f" J: E3 U! |3 N0 P
set i (i + 1)
: T* A& ]4 G8 O/ s! r1 U/ X- I]
* A5 y9 B$ s5 b' h7 a% K+ R% o, Eend
$ {! g) S% p" y; L6 e- D# M+ I0 d# w4 k1 e$ R
to update-global-reputation-list# F$ L; I9 m" ?# d9 V) s2 ?
let j 02 C2 e' |3 E' X
while[j < people]4 C2 l! n- V- A' t: t. X; N
[8 t! @: b. m4 z1 [( f/ o
let new 0, K2 Q  v% F6 G6 q7 @" K* x9 m2 c
;;
暂存新的一个全局声誉
4 D# D# H6 R9 ~; v- Glet i 0
/ o* z( ]0 W7 flet sum-money 0
* L- `( P: p' jlet credibility-money 0
% |+ u( E% p" j+ j( U0 Q' H0 F; F, xwhile [i < people]
4 |/ r9 A, j# X. x; T! y. r[
- X8 S8 V9 O) [( f3 T9 Fset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))4 A1 P; o, G; l( T6 D3 y
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))! X& Y. i* c; Y7 X& _5 y: s
set i (i + 1)3 {! @! X+ ]. {4 m( q& {1 R+ m2 X, t
]
0 Z% ?$ N" s  a$ Jlet k 0
7 Z+ d' E- M) K8 `: h" Glet new1 0) ?  P$ J& C9 E" ^4 h7 M' e- z
while [k < people]
- f. l) d- d, D/ c7 K; G2 W0 i[: ^9 O! ?) `3 B! f
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). l4 j5 e3 F  Y6 D, z, M
set k (k + 1)
+ R* Q6 D2 ^2 X3 U6 w" O]. n6 R1 c: b5 a
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 2 e# p5 C8 t4 f0 C, ^
set global-reputation-list (replace-item j global-reputation-list new)# j' y: ^" G' n0 V
set j (j + 1)
$ H! U5 L- w- {, v2 j* j]
6 V( I% f* C, `end
4 B- Z; u/ c" q; I) M
8 L) b+ a8 g& c6 o$ c+ f# V, y% J; J
$ \  c9 I" A* k6 Q& ], ~1 W- X) }2 L5 v/ M  R, |
to get-color
/ f# Y$ i0 R1 |7 X5 a; r1 \. b: z3 ]
set color blue

* R( n# U4 `' |4 ]2 s; o& {end
$ S& w' |9 }/ n, j
9 b2 t% |$ P9 N# X8 p: nto poll-class$ o* j* q/ B' M6 I- Y
end2 f+ G3 j2 g; r! I. h7 c; x# `
% M: _! I5 @+ y
to setup-plot1! f1 d# }7 ~% W' l
* J3 \& p1 H# t( l
set-current-plot "Trends-of-Local-reputation"

3 A+ \) n* T, C' x6 F. O: h2 f
; i/ a; F2 V# Mset-plot-x-range 0 xmax

* u. d# Q! |+ q# a0 ?
) T( l- d: F% Y7 _$ Nset-plot-y-range 0.0 ymax

: ~# B+ v8 S) {0 ^end
0 I1 A3 A1 |/ S  o) u+ G; y" K; f
to setup-plot2
1 N7 W) H/ v' s- V( p+ V
# K+ l; n) U; u6 Qset-current-plot "Trends-of-global-reputation"
( ^) j) ~  V! Y& R* X) ^) Q
) R1 m- p  S9 ~& p9 `/ ^
set-plot-x-range 0 xmax
2 x4 B/ ?0 u! @( L# {
; J3 o! G5 L1 Q$ b
set-plot-y-range 0.0 ymax

, G: S8 }( {% W6 q6 `/ O3 Aend& M8 Z. \9 c& {1 [: U  ?4 k
3 a& E1 K9 t. D) `4 v% Y( O
to setup-plot36 V2 M! c* V/ x! j
7 T0 M! t# T$ }/ q9 W
set-current-plot "Trends-of-credibility"

' S' U8 i7 u% z7 r3 b9 k- e( ^9 O. e) k# J/ W6 F
set-plot-x-range 0 xmax

, j8 F' ~3 _+ G; Y: k
' J6 }! p% G0 c6 oset-plot-y-range 0.0 ymax
& y( f. w. @+ V' I
end/ ^1 j, q  T- O0 K; a

9 f, I3 C) R/ `, X. y$ S- d$ Bto do-plots/ n, q/ b( X+ b" i* G6 d  u  i
set-current-plot "Trends-of-Local-reputation"# s- Y- l4 `" j
set-current-plot-pen "Honest service"
# z  _( V5 R/ Y3 L; wend
* \6 n3 [/ `2 e0 Q0 I: e4 t, H- T( J6 ]8 s8 i  _
[ 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. \* w! C" F) |  G$ C4 t7 l
" _: n$ @1 T5 I8 @& F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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