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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 @7 P( J% O; }0 \
to do-business
# h' Z! r1 K- c* Z rt random 360
/ J* `9 _: l; s) V8 }4 N! Y0 W# N fd 1
: ^" g/ B" u" L2 w8 ]5 I( n" W ifelse(other turtles-here != nobody)[
+ S1 Y# K* A& @2 E4 u  G   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., |; A; ?, U" n3 t$ t2 ]; E
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
. X" j; Z. R% q1 u0 `. Z& M1 R  j9 H   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
# q. U4 j7 \  p- o   set [trade-record-one-len] of self length [trade-record-one] of self
3 @; ~6 i- d  x' E   set trade-record-current( list (timer) (random money-upper-limit))
, O/ X6 W' l4 F$ x9 V2 j& Y5 a9 `3 D% P: d0 w7 c- D) i
问题的提示如下:7 p1 i7 a5 G& o7 }" l* w2 h

! I( b9 ]( b: F% r) t. I1 O4 Lerror while turtle 50 running OF in procedure DO-BUSINESS: ?) i1 @8 x# h3 W7 d3 @
  called by procedure GO
; W2 u2 V0 c$ F: i" e, BOF expected input to be a turtle agentset or turtle but got NOBODY instead.
7 L; ^/ ?6 C, E/ C8 U
(halted running of go)
% m8 K) B( b; g9 F2 i  D8 i6 g) M0 ]- `3 r- \! b8 ]+ P5 ~! V2 f$ _
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~~2 l% V; G+ E4 v+ e
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
/ k: ]3 h' I3 |/ ^' eglobals[
/ L( B6 H2 ]7 G5 C! D% l0 \: \xmax" u6 J( k/ ~3 V/ T5 }+ o. g& I
ymax: J6 x% ^% G1 ^8 J5 S" M, C  H
global-reputation-list" B+ w$ |  H4 K' l7 H3 p

' W* d; [: Q7 _;;
每一个turtle的全局声誉都存在此LIST
/ Y: `- M* b2 ]9 V4 D' `5 Ncredibility-list
1 \' F9 M, |( E( p4 y;;
每一个turtle的评价可信度
( S/ h9 M8 F. n+ v% Qhonest-service7 y' o& j3 ?6 G$ y" u5 L5 v
unhonest-service3 Q2 F/ U; p' m1 Q* a; {
oscillation* b& c/ z$ r0 L- z$ }6 H" H
rand-dynamic
3 b$ w% d1 n  Z0 Z]1 c! U+ P' P5 s$ Z7 A" [/ u
/ q4 B. c6 r" y, N
turtles-own[
- e' @9 \; [; wtrade-record-all6 T6 |" o" ~% S3 v, b
;;a list of lists,
trade-record-one组成/ S' T2 g  W  I- ^# f. B' i: ]( Q1 O
trade-record-one
8 c; {* @; R0 G: a;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录. `/ B$ T' B0 \8 ^. e
5 |; O/ X  R5 x/ d  g. o. H, P
;;[
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]]
& H3 w, i* \; ~$ ^* 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]. L6 e) D, E4 ]' I: {1 m
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
" t; {9 ]* m; P) c9 A% f$ s* ^neighbor-total
. ?# M5 d& `6 B;;
记录该turtle的邻居节点的数目0 y/ B# t) |; A) m
trade-time
& m5 J( N: ~/ L5 G;;
当前发生交易的turtle的交易时间
% |! L# |# S, U, bappraise-give
/ ~- [' y" B& g( R8 F;;
当前发生交易时给出的评价+ j7 n! N* M6 i% c! L
appraise-receive$ I. h( V6 q1 f
;;
当前发生交易时收到的评价/ g0 c/ h9 @" {2 d& K" @- |& L
appraise-time: r& O' P# l; [! G) N1 |- q/ D
;;
当前发生交易时的评价时间
* d0 P) s( v) T, a/ q& u" _* [local-reputation-now;;此次交易后相对于对方turtle的局部声誉' |. o- ~& W/ M1 ]
trade-times-total
4 x3 P0 O3 n5 L( D. U1 s;;
与当前turtle的交易总次数
7 @+ D7 l2 K! dtrade-money-total7 n5 f# d5 g0 n
;;
与当前turtle的交易总金额  R, }/ {4 W' a; e( u* P
local-reputation
+ z# l; q) ?3 r# dglobal-reputation
/ D2 l! R; X% D' I- y$ Kcredibility
( V# s! R/ c! j, B5 M; S;;
评价可信度,每次交易后都需要更新
3 r+ \, j0 W% {* bcredibility-all6 F- y* B2 x" O: f  V
;;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6 U2 X2 z  M5 _1 J0 r8 m
/ P+ H1 c8 N: A" n8 {) q
;;turtle
的编号对号入座,对于其自身的编号,在计算用到的时候再进行剔减,初始值均为0.5& r; \* I2 P/ |* i" D
credibility-one
# ?8 _+ Y0 ?: {! D: K;;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people1 C  d+ N- O$ m3 D
global-proportion
: H& _" k  y2 H' U' _customer# s. G! k: e! Z+ D0 |: f
customer-no
) S3 k  d6 m- h, }/ ntrust-ok
" v8 U" [& _3 k6 W- K8 ztrade-record-one-len;;trade-record-one的长度0 Q; }, P# w, h
]- t9 v0 ], W4 o$ [% C6 q$ \: `

4 a  R7 W; j4 o& d" ]/ o9 t;;setup procedure
. u/ S$ Q8 k' t) |2 F8 c
8 ]) k+ X1 \( T2 {+ [  c: y0 _+ y$ ]6 eto setup
( K  P2 k. ]- E3 a8 F5 c
- d0 t1 o; o- s/ rca

: m2 o0 h6 s$ r8 V& w/ J: {5 X
2 I9 @$ C9 C2 }1 z& u. M2 Einitialize-settings
5 ]7 x0 f0 g/ }5 b+ C$ a

( i+ ?, o7 ]0 j3 ~9 Q; Ucrt people [setup-turtles]
1 U/ m7 d+ h: N  z8 }

8 `8 S! f+ Z$ Z( h. C; y2 lreset-timer
2 m- p  W0 g0 T
  `) M# M9 R5 I& C. q6 R: ?  q4 l, ?
poll-class
  V( Y  I" t& @

# ~8 E5 @7 B9 q) q* x5 Hsetup-plots

7 g( @, o# \; ?' X8 L/ V+ n. V. |  G) B, R8 T2 n9 r
do-plots

" i6 s) B9 T9 X5 E6 jend
+ J9 v  o+ I; E7 d! e8 l, ]2 P+ k( I, Q; a) A. Q0 ?
to initialize-settings
7 ~- J" U6 K5 g, Z' f9 w
) @1 e" X$ i- R1 Zset global-reputation-list []
) j4 k- \1 e# J% \

5 q. g! u, t5 z/ a# b9 n) H7 q& Hset credibility-list n-values people [0.5]

5 f8 _0 i% F# s$ {- ~' T' j' n1 Y. Q, ~; n6 F
set honest-service 0

1 a3 V. X  z7 l8 ~" u9 d. @2 o) \3 I4 S* V
set unhonest-service 0

* P0 j. x/ }7 a5 R, q/ P7 e* B# p) d  m& v: o( [
set oscillation 0
! i5 ^0 e: j% m1 V  W# Q

& p6 v+ _4 Z9 }/ }" Q* Mset rand-dynamic 0
  b8 H' `' f* ^" m0 S6 v" F1 c
end: P' I& e# e$ l* r  w+ `

9 d" m# C% s4 Q9 O3 Yto setup-turtles
# a% h3 B0 p" b2 Kset shape "person"
8 K. R" s8 N7 Y. i/ Zsetxy random-xcor random-ycor5 C; P8 R2 u- |/ ]  j
set trade-record-one []* Q4 M9 @6 k! \. o

8 D$ p1 z/ |0 N) t$ Yset trade-record-all n-values people [(list (? + 1) 0 0)] 0 m1 }) r2 g; h

# Y6 x2 I0 }' @! C. tset trade-record-current []! ], k1 C* [8 J( F( Z8 \
set credibility-receive []" U, L7 j. B, P# G
set local-reputation 0.5
2 G) b+ L. a0 \  }( tset neighbor-total 0
4 Y3 v& G/ Q* [( m: Vset trade-times-total 0
& N0 E& S; ?& P& W; Q' F' [- Wset trade-money-total 0
5 |! i! a9 N/ {0 r: s+ {8 Qset customer nobody
7 V# H& |7 @$ x" jset credibility-all n-values people [creat-credibility]8 r9 |8 i* ]9 R& B) N
set credibility n-values people [-1]
2 [+ ^, q' u+ V; Q' X$ ~& Eget-color
' d! Q* t" a3 n

) e/ j: J+ Y6 A! @8 z' G: Y4 _2 _( eend& l! J: T, P5 N; `, P/ Q0 h

8 y# {% x: q7 i' p" P& J! D2 Lto-report creat-credibility2 w- U2 z5 B+ Z7 \8 e. r. A
report n-values people [0.5]
0 h7 f* \8 a% {  M2 k% J5 |end, }( c& }5 E* t# x" D
5 E/ l3 t0 o5 c
to setup-plots  o9 ]- u" C' u* I% X9 R+ @1 T

5 W( E: z- E' @# u  |set xmax 30

1 G9 X% J, P% V# g& W& [8 Q3 I, K0 E
set ymax 1.0

4 S! e( l- R' P* ^% P! ~. h. s/ ]5 t' [+ ^% v
clear-all-plots

8 ?6 U/ {/ t5 G9 D3 b$ h' X
( ~8 W3 Z! {! X0 {  bsetup-plot1

+ A- t4 ^' _8 N9 b6 A' [$ ~* N& G; W, @
setup-plot2

5 X7 m, {9 U) J4 u! X# z
0 j$ c' j- |. osetup-plot3
* R0 k# T* d$ a) O' U
end
6 ?+ j. ?! g2 I) p; q5 K- K
1 }' X. v" ^4 C) n/ `+ O  `;;run time procedures
/ `' S5 a. j  A4 I  g' }& |' S
+ ?$ Z% ^5 I& z. z8 Yto go% y; a3 C+ L/ Y( M
, R/ Q- P$ f& \
ask turtles [do-business]

& r- y* q, a( L, T" g; ?' ^end
8 d; ~0 g9 ^% T5 d: ?8 h
6 b# |6 [1 K3 a' j) e0 h* Fto do-business
, X% J3 f/ _5 E* G( Q. U) M5 h+ k$ L; _, |( h
! u  k; H$ F& q2 O# o* P  }
+ e5 G) D, q5 u9 L/ u
rt random 360

! j$ l2 V0 q2 n7 D1 t- b5 k; P2 c4 o" ]2 v
fd 1
- A* Y5 \+ t9 y% M" _

9 l8 z3 W% @- ~: w: vifelse(other turtles-here != nobody)[

2 E! I9 j  \- z  u. X' m+ s- S
% q. ?- b' @8 N. j2 Z( c# E2 Yset customer one-of other turtles-here

2 n( K' {' e6 A( |- l
1 P# u7 h- q" V;; set [customer] of customer myself
- [; k8 A2 r- S, Y  U3 ^+ D9 X- W
" [) A) c( K; P) p' k
set [trade-record-one] of self item (([who] of customer) - 1)
( G- O* k2 r; g  X2 F2 O0 w[trade-record-all]of self
6 I$ b, q& h0 n;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

4 w/ b: k3 K$ F  L7 g/ m0 x( A
, j# O5 {2 c* p: Hset [trade-record-one] of customer item (([who] of self) - 1)* h3 ~& ^% I5 Y, N
[trade-record-all]of customer

; ^" U6 [, e9 z! `7 U& {/ l% ^" i1 q( {5 ?2 `/ u" }" X" J
set [trade-record-one-len] of self length [trade-record-one] of self

4 Z4 P. p0 @( I! j! n4 ~( H
/ _* I  d. r6 W7 I& N! ?, y  Qset trade-record-current( list (timer) (random money-upper-limit))

* H5 F# \* q" L& ^* F1 J4 E
9 I, B! D. F- ^  Lask self [do-trust]/ i" p# X) \1 ~5 u8 J' h$ s# `
;;
先求ij的信任度5 ?; s, Z. [& ~8 P/ [  F3 n. g* `# Q
: b, `& g, k: D: u  ~. D
if ([trust-ok] of self)
9 e+ ^4 i8 i3 c' L2 g) x' K;;
根据ij的信任度来决定是否与j进行交易[
0 J# e7 J' d# O) I. L; z/ Oask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
; V4 H, B$ o+ Q) P  X0 a9 M6 c8 h
[

/ g: E3 a# r: D. v; a" q& V& n" Y9 `+ ^0 f) t) g9 o3 q
do-trade
# `# {: t- `$ y' k1 P( ~
9 D8 P4 w+ C5 m/ {; s. E+ ^3 t7 q. m8 L
update-credibility-ijl

# a: w0 D# B/ t, Y0 Z- x
* X) _0 B3 y  m$ hupdate-credibility-list) {) ^1 r* D, `! H( t* l# O1 }

8 v4 R7 m' f' f! D" m, N$ ?& Y5 P6 [& @6 V" Y8 R
update-global-reputation-list
6 ^( R) u- e7 K2 X

$ r: q# {$ P+ M& J. H/ xpoll-class

9 i+ O5 k9 K! K7 Q' G2 x2 \/ I/ _" Z7 i/ D
get-color

$ m1 R! y1 ^& r: ~6 V
! _; |$ i! Y  f]]4 M% y. r  ]$ W+ T& O2 `  p
8 j) @! O; {" k9 P1 r+ Z/ h) w
;;
如果所得的信任度满足条件,则进行交易
6 Y# ]6 O. x; u+ o6 L; X: U& }- a, N7 B0 Z6 [" @9 R
[

3 e  G. f5 t9 K8 E- p
5 K; @. I' b, h8 n: j* Irt random 360
& x* p7 K) I1 R( M* D5 [% o2 Q9 W
7 f/ V, F* h$ d+ M, j
fd 1
7 Z0 s/ `& @7 T( H. |( O
3 M; t! f( I/ j& V5 H7 f: G
]
( \9 f( F9 b* p8 Z# i! ^# `: r- B% C
& }: p/ |* r' `/ I  u  a) b0 g+ @
end

$ ]; R5 W9 _8 ?+ E5 J3 C: c* t0 z2 _0 M3 b4 {3 `
to do-trust
& G# V) P& ]3 G4 H/ c% aset trust-ok False
3 r% ?6 A; O( S3 j  z* g7 y7 h. X$ c* P. K! a! O# d( `. X

+ c5 S, V' ~9 T$ _" n9 Plet max-trade-times 0
9 t. e8 g1 z2 y& Y* M2 aforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]. a, w7 S9 P+ ]
let max-trade-money 0+ E8 I# a9 s0 [2 H
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
% F& u9 Z5 O0 u  i) {let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))2 m" y9 M' o3 p
9 Z+ Y2 e( F( Z

9 ]  ]7 N+ h4 ~$ @7 A( Fget-global-proportion# Q4 R# p, a3 b" p" w
let trust-value* v! q$ D$ W+ x, z- S3 L$ F" I
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)
% x0 k8 y/ d2 P0 f
if(trust-value > trade-trust-value)
. j" \+ K5 ]! \' S( @  z2 N. s[set trust-ok true]
/ R  P9 w/ w5 P" b( m& Pend/ G3 P% A4 O, o! u+ ~; d
9 {! X5 g- `9 y8 J
to get-global-proportion
" w: O' S3 y% q0 Yifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
. ?* ^" B5 i  t' e[set global-proportion 0]
9 b5 j. h6 P4 H* F( t8 x[let i 0' e2 ^9 N  g9 X6 D' p7 u# b
let sum-money 02 p7 W' _, m! i) t: D" ?0 \
while[ i < people]
0 I! Y5 V! d4 v1 q5 A0 ~[
- f  \/ A5 P, p* Tif( length (item i) B, [3 M  F  `; ]7 \/ U
[trade-record-all] of customer) > 3 )
* t: @% }! q0 P. S
[
) S, V" M* V  Y% B: kset sum-money (sum-money + item 2(item i [trade-record-all] of myself))) r+ P. E9 E' F# v. v
]( Q& Y1 S& |2 s# d) M; x
]
8 @* M1 P* q' Q. J) plet j 0
1 Q7 [$ y. ?! ^5 z6 @  i" ]! Qlet note 0
0 p0 I# c8 a1 ?) xwhile[ j < people]
2 h7 G! f4 W/ x[
4 |9 O! s' p: E* ~0 kif( length (item i
8 ~2 V9 A0 l0 |/ Y[trade-record-all] of customer) > 3 )
1 c: S& K8 V! H, ~6 N% i
[$ C7 j: V/ d, s9 ]  }  z
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)8 N) J0 o4 D' t8 Y! O3 D
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]& a* Q1 z& }. c' s  m+ E' s' e
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]2 ~5 E% v3 b4 K3 G( e2 E
]9 O) {% [/ [3 f; l
]
( x9 D, ~) U4 z, d: q% Vset global-proportion note3 Z4 b2 ?# l% e5 \, G. ?" Z
]
9 [' O8 }4 o' H2 a0 J2 I; p0 j* Dend: L. Q" r5 S, i. y

% L6 H- G  x% g7 ]+ X3 zto do-trade
; S& T" @. p# ]+ l# C6 z6 f- h;;
这个过程实际上是给双方作出评价的过程. m8 [) \/ n) n, |
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
( h3 m) i+ ~  u" _% q8 [. w2 mset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
8 V9 n& |: D; h! \7 U! wset trade-record-current lput(timer) trade-record-current
& _3 V6 R5 n4 K: m- v;;
评价时间
) ?. j; ]( R% c' Y- v" eask myself [0 h+ w1 ^4 h2 n+ P6 \
update-local-reputation# z: I; A2 o) s  e$ p2 G
set trade-record-current lput([local-reputation] of myself) trade-record-current  w* v3 y2 k  w' c. k" N/ ?9 `
]
8 p; J! D( m% x% ~- B( \set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself: W# k/ B1 c( c: S+ n* l% \
;;
将此次交易的记录加入到trade-record-one1 j' E1 P0 ]3 M- X$ [9 P
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
: m- c9 Z$ y0 r9 `+ Ylet note (item 2 trade-record-current )
- c4 X7 Q+ D% G* g; X4 k, wset trade-record-current2 u: @1 t4 q, p; A' @, o
(replace-item 2 trade-record-current (item 3 trade-record-current))
2 M  x/ s( Z7 J6 o
set trade-record-current) k) V: U2 x; F$ [
(replace-item 3 trade-record-current note)- q- A& \% G# R. F5 O$ \/ ^: W
) l' T1 {. {3 l) X* g
$ d& b: C4 _  A, ], q7 U: J$ y
ask customer [
5 U( k/ X1 B, b0 a" R, Iupdate-local-reputation( s3 O  @6 m5 ^7 }; w% W! {5 v
set trade-record-current% s  A) D; @( n+ ]( _8 |# f
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
/ e5 \9 S. e0 G" n) S1 |
]( d) N! c" v9 N- O) Q4 J

: u$ d: {  p* s9 j1 A! K1 @

/ \' t) ?$ [/ L) s* _% W: ?2 [" Bset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer! i( F  {/ E$ M' Y* f' }# w5 f- u: _
( R# h9 Y- T* U9 k# {  E8 `
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
" s" M& H3 H* X8 U$ O, ?4 V;;
将此次交易的记录加入到customertrade-record-all
9 h6 D# D  v) a$ ]! Fend' v+ b. W, s# Y6 l' S
& L; z& ?0 Q' m% I) B* t" j
to update-local-reputation
6 s6 W3 X( ?; O9 y  aset [trade-record-one-len] of myself length [trade-record-one] of myself
( `+ F( K' r) N+ u( V6 q4 `# [6 Z% I( Q

  H8 g' g; ?" j2 c- b, G& I& v;;if [trade-record-one-len] of myself > 3

( v; F9 d  b/ G7 W& d" V& T8 [3 H! aupdate-neighbor-total
& Y6 {& o7 |* `;;
更新邻居节点的数目,在此进行  J6 m5 ~9 _9 }6 Q; V
let i 31 l" {. I9 ?+ {5 L0 N* ~
let sum-time 0
' i: n- k" r5 i! K7 E% T4 x" g# l& i$ I& Twhile[i < [trade-record-one-len] of myself]
0 [. l* Y& n" Q2 N+ @[
- D5 j; q+ `5 t9 I% `  D7 sset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
7 a5 j+ h, k, ^8 ], ~set i
# }! z- J8 n, }4 b! B! U$ W9 U( i + 1)
9 s: C+ f$ \( ^
]; o3 S% }% g: I0 N5 b1 O9 L  R
let j 3) j* F3 ?# K# T* q  \5 C$ ]2 x
let sum-money 0+ \, D3 S* e) }% U. X, q# h
while[j < [trade-record-one-len] of myself]
  b. V% j: }* y) h0 G# O& |[* y$ [+ x* z  H- ?
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)
" T8 M5 x! S2 Q  kset j. V- l: Q, z: z8 J
( j + 1)

2 \! n8 C' j- l) L' []
# ^1 J- ~" u- B7 Ylet k 34 O2 D  S& \& g; ~4 s' ^
let power 0& c( [4 W/ n! a% V2 L
let local 0
; o6 k" @% R/ t3 {  C7 o/ S; rwhile [k <[trade-record-one-len] of myself]
% l  I/ I$ r. P' p" B9 b[& D+ z- o. q" p- s0 K7 }
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)
4 p5 N, o  W2 J6 m# |set k (k + 1)
; v! Z* y4 p7 i]
" q8 U9 G% b; b% m+ e3 H* ]! \set [local-reputation] of myself (local)
' l) R0 }+ K; E/ ^: I4 U6 Q. gend: A$ ^! Z& S( M/ G. u  u4 O
. |3 r9 [- A0 R- B
to update-neighbor-total
9 z& r7 a8 u) ?( s% F/ h+ }: J5 Q0 V' B/ w$ a& y) k
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]' t+ K9 J) ]/ z/ C
* R2 F( V' t, w
8 i3 e# ^/ W1 B0 M( E, p; m! m
end' i- J; G% V, r! c; j) F

8 B& L- O; D' [2 U$ [: vto update-credibility-ijl 5 {$ Y0 K+ \# u; L) y" q( O+ g
& [7 B" ?6 B& T- O5 }/ Z0 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。
- w/ D" k& K. T. xlet l 07 S) i  n) J" _& Y  O$ A
while[ l < people ]
* @8 t2 X6 [  i' ~& i7 D% b;;
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
! k0 }0 t# E& F$ @. N1 b[1 L2 b9 y! @/ A, U% J
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
: I7 y' s9 \) O, t8 Y6 h  aif (trade-record-one-j-l-len > 3)2 H$ k+ M$ }% q  I% S  ^4 C" Q7 t
[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; r: n, u- q6 q+ G  w1 W" ^
let i 3
, d) k! ~3 D' ulet sum-time 0
! O; G1 R" |4 U2 K  V- s/ kwhile[i < trade-record-one-len]
- y- Y( T- l: l( G/ Q& r$ k[5 }5 e; v; K' R9 v+ j8 E
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )3 i8 g* _: w6 q
set i( s' ]9 H7 o, p" r! F7 Q' T- A
( i + 1)
3 n- c$ Q8 h2 s4 G: K
]
0 S* x) w; h4 y$ ]6 Olet credibility-i-j-l 0
3 E5 y3 N: d5 b, ~;;i
评价(jjl的评价)' H( F% [; s0 r
let j 3* K# E/ u& m) r% `$ t
let k 4- F6 i& ^1 R5 ?" z' m; I) {$ n5 i
while[j < trade-record-one-len]
2 o0 x" R% T) p! P[8 ?2 K% L5 |2 b# t6 @$ V8 e) c
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
5 Q1 W* P) N/ j( |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)
  K/ k/ }% ]1 h: uset j
5 Y5 U+ x2 ]3 m' M( j + 1)

; c& L: o  q+ A  }; F/ o* D+ X]( Q! [9 v& z2 X$ h7 t: E1 ~. s
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 ))
8 G( C& h" ~5 s# o
, `& R& i+ N4 D# [' \  o1 B  v

6 S" K" F" g" y0 o1 V. O2 p  i! mlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))) s3 F" h6 m( F& f2 u: b) ?! r2 W
;;
及时更新il的评价质量的评价
8 u7 ?) I7 R& n0 j1 V0 }set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]% A! j7 c7 E& o* C/ q/ {$ G
set l (l + 1)/ j2 z8 T& w$ q8 _/ M7 Y$ K0 F
]
8 Q" J, I* w) {% L5 [* lend( A1 s2 ^+ N0 h3 B; w
" P  O% H3 c8 h$ V7 s3 X6 c9 E; M
to update-credibility-list
( o- L; h: K; Dlet i 0
+ Z# L% M" O/ f4 b  q3 pwhile[i < people]) w* w3 u& ^" `  \5 s7 P/ m
[+ z# C. R" N  K2 U! ?
let j 06 ?9 o, l  n6 g! b! Q
let note 03 J2 ~5 B5 B. k2 g% v2 k& P  [
let k 08 Y# d5 F; N1 Z$ _
;;
计作出过评价的邻居节点的数目
# @) a0 @& w( j( C7 u% Y& |while[j < people]9 o; m5 G- Z9 G' q
[
8 ~6 \# r7 E* Uif (item j( [credibility] of turtle (i + 1)) != -1)
3 F9 i5 i% R4 v4 h! H5 D' z7 s;;
判断是否给本turtle的评价质量做出过评价的节点
: f) T# I; f* d% [[set note (note + item j ([credibility]of turtle (i + 1)))
5 k0 `. H1 t0 U- G;;*(exp (-(people - 2)))/(people - 2))]

9 d9 f' t+ a# f7 O9 uset k (k + 1)" e/ p9 K1 A! N) B# i4 t0 F9 T3 F
]
. k0 P' b9 I6 A6 c# D1 R. |set j (j + 1)4 z$ M1 Q) a+ Y3 }4 s5 a7 i1 s
]
1 a; _: ~0 ]$ N: Uset note (note *(exp (- (1 / k)))/ k); z8 f4 v. n3 x+ s- r! _7 t/ U5 r
set credibility-list (replace-item i credibility-list note): D4 H1 v7 S/ H5 G
set i (i + 1)
5 ]9 H/ p3 I, V7 f. y9 N]
( e# y. K3 p* k2 L8 i) xend
7 {3 m3 w* `: l  p) O" h) ~
8 Y/ j9 y' a5 Y8 c6 \to update-global-reputation-list
7 t  A; B1 n( g' P. n: a7 vlet j 0
8 o1 [# n, M2 R" l/ e% zwhile[j < people]
3 B& Q) l" p& R/ r- {[
# P7 v& ]% @. G* v+ O% mlet new 0
# n$ m% X2 u7 w2 F;;
暂存新的一个全局声誉
* X6 k3 S& c8 Z( z4 d1 k6 ?) _let i 0
3 d% {! ~) D- l; L, B: \& llet sum-money 0
7 }  B, d. l. |1 y4 h- slet credibility-money 08 }% z5 y, ~: g# i7 [% }
while [i < people]
6 S' o! Z  x% |( I[$ A3 _1 O- F9 T: X4 l
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))# t7 Z5 F, ]6 `0 N+ ^. s! L
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))* s  m. q% Y% Y! g& l' P, I+ v3 `5 G
set i (i + 1)# U. |, Q* Y, j: p: h* D
]) }, c- v4 h2 N4 ~  A8 ?
let k 0
+ N% T) X, W( D& X, _, ]let new1 0
8 g8 w; \& ^- `while [k < people]% q( g, v$ }- m! T
[) i( X- L: p5 E; n- h, d; I6 e: [+ R
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)" j& `: X* I7 j' O' z
set k (k + 1)+ u4 X+ q$ U! i* v/ l
]
6 x4 b2 s3 p3 }& @0 `set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 0 s$ v. K! j0 w  h+ [5 o  U/ Y
set global-reputation-list (replace-item j global-reputation-list new)
5 j7 S$ D8 z* Z+ [3 x3 Fset j (j + 1)- v* R9 J1 G' M- z% q- |7 `
]+ i/ M- G+ F2 P9 K/ @5 e4 q+ s
end
, u2 Y& P3 N, o7 g# V6 P
3 l3 k. `+ S/ `7 w8 s7 P$ D* l5 _! @" A+ P
+ |5 d+ j5 K0 |* W
to get-color
8 u# V" ~. {: w$ y& M6 M6 ~& F( r! N7 g5 `. i6 T
set color blue

. G8 g; ?8 i2 d& T3 W$ p3 oend6 [3 q, z3 s$ O. @4 O

$ f# T! N$ ^  ]6 Xto poll-class* W! p0 Z7 R6 |; U
end
3 j2 b' o$ h3 _: m1 {
) m0 L% H0 |; y  s8 y( W! cto setup-plot1" |2 C0 ^. q/ r  }) ?# H( U4 L

5 B! V, z0 x% j4 cset-current-plot "Trends-of-Local-reputation"
* N. o# L1 w/ V5 _
- S4 u  A$ K* ]+ r0 }4 R1 v
set-plot-x-range 0 xmax

( p; |& h; S& n' u& ]: {$ W" N) O) x2 O! k
set-plot-y-range 0.0 ymax
' S" w) G+ m1 T/ v3 P5 g
end
5 ?: B9 H4 k/ ]: S( q/ S
+ L! D$ Z, Z/ Uto setup-plot2& D1 K/ m( z  m' i+ N' q

8 Q, n- W% Q5 A* a. Yset-current-plot "Trends-of-global-reputation"

& |/ K6 B' X9 W; B3 a% O- A$ w& Q( Q7 K* F( [( l8 R( Z) k* N
set-plot-x-range 0 xmax

; }3 u# L! A  t& {8 `
! ~# I( M% ?6 [/ \5 m5 {set-plot-y-range 0.0 ymax
5 T, y+ [4 J9 c- S! }: ~3 |
end
" {9 d, L" e+ W
" }+ \+ {+ i$ M* Bto setup-plot3
' A& S6 Q+ g* b+ g( w& H# {, t6 k" S2 j. P3 V) ?
set-current-plot "Trends-of-credibility"
4 ~1 D0 V3 w+ F/ y: K( T1 {

$ H/ `% S* `( B4 y4 r6 k; hset-plot-x-range 0 xmax

/ |7 }' H& y2 o" i$ c5 l  e" i
' o9 w8 P/ f. zset-plot-y-range 0.0 ymax

) v( w( j* z( rend
; [" M6 R, A7 F% M6 Y( F9 U6 F  C) m" U
to do-plots9 \7 r( |4 [" M. i( q7 h
set-current-plot "Trends-of-Local-reputation"; Z% B7 b! t; p% P% X& d
set-current-plot-pen "Honest service". I6 i& j# N. i5 ]8 R3 |7 U
end
3 y2 a0 R( G/ \# G& N# e) p
9 Y9 P! R6 t& `0 |[ 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.
$ [1 W5 |1 g4 U3 n$ D
! G, e) s2 m9 ]0 a0 }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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