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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:! p# [1 Q% n& r7 _
to do-business 4 s% ?$ I" z! \! }
rt random 360" e. D9 H, Q  A8 ^
fd 1
9 t% |/ Z& \- j( L ifelse(other turtles-here != nobody)[
2 q/ P5 C9 f4 C6 H   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.4 M( X" [4 ^& [$ p
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    # b8 ]% o* {# j, o* c2 e4 G
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
8 V% S3 R4 f+ d& Z   set [trade-record-one-len] of self length [trade-record-one] of self
( Z# J# h" w+ j. u( \4 |   set trade-record-current( list (timer) (random money-upper-limit))  J* K, o0 B% f3 B4 g/ [

4 S" ?! U1 `( _3 r0 Y9 Z: }问题的提示如下:
$ t* T% L1 A! ~$ _& g& i' y6 {, S5 A+ k+ e
error while turtle 50 running OF in procedure DO-BUSINESS
4 X! q$ X4 q4 T' l/ O3 C  called by procedure GO! f4 s* N4 ^. ^8 u, t/ M5 T; l' U
OF expected input to be a turtle agentset or turtle but got NOBODY instead.4 V' u6 B3 V5 H
(halted running of go)* |  }0 c1 l8 K7 i" j
! f' k+ C" g- _9 F3 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 j) X) P/ g  `, `& @) J. u: D2 g6 F
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
$ t5 L, K+ v( t2 X0 Mglobals[3 w  O9 [* [6 T% ^# i# U
xmax4 M4 x4 K4 G2 n; M! D/ M- o9 m
ymax
4 l/ ]4 {1 ]* A/ |global-reputation-list1 Q  H. I/ q/ Q: K7 F7 i  P# A

0 I. v! i% u0 o;;
每一个turtle的全局声誉都存在此LIST: |$ s/ R) p' |) l
credibility-list
! t, O1 f" u! a# l" U;;
每一个turtle的评价可信度
& \; \! m& y9 o5 V% nhonest-service
+ c! ?: e% `" C6 D# M0 A/ Gunhonest-service
8 O# l# l0 w; }2 S- woscillation
5 \, j4 f, D5 _" Jrand-dynamic; ]8 |. S, X7 H% {& ]! e5 D
]
4 N6 F9 X) I4 J4 W$ p* U) A5 H9 T- u- k* q+ U
turtles-own[$ I& K3 f* T/ ]
trade-record-all
% F$ v; ~6 {) ?/ T' M;;a list of lists,
trade-record-one组成
' U4 H) K+ t' m) `$ S0 d0 Ntrade-record-one
$ |# f3 E, W. 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
5 o' ]% B; {6 d; F/ t. l; B( f! W/ {/ W# O6 b  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]]1 Q" j' ~0 Y5 o2 ]0 \$ o# i. V  H+ `
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]
: R8 I/ M8 ]0 W  X; X1 S3 t6 Bcredibility-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- C: r4 G' x4 f9 b, ]5 T9 J+ D! h) _
neighbor-total
: B$ U4 ^& M( b6 X) |+ m8 B;;
记录该turtle的邻居节点的数目
* {: L$ Q  ^# m: U: Wtrade-time2 t3 n1 I4 k+ R: Q/ K. g+ r$ }
;;
当前发生交易的turtle的交易时间) A* ]9 y( D0 A. E
appraise-give3 o. c- e1 h2 S6 Q7 x; ^+ t
;;
当前发生交易时给出的评价) N# Z$ T" b7 e# t/ C8 R; h: Q
appraise-receive
( C) m2 H% ]+ L$ E1 H;;
当前发生交易时收到的评价
( p# t: F2 N. Y& p% V6 ^( Qappraise-time* ^# d0 y, x1 l% D! N; J
;;
当前发生交易时的评价时间
- c% s6 ~6 M7 y* ~local-reputation-now;;此次交易后相对于对方turtle的局部声誉! q7 p" D  G- r, C3 s
trade-times-total
% a3 k0 \- x" |# D" Y, N! w;;
与当前turtle的交易总次数. B7 W8 r1 x* l% ]+ s0 C
trade-money-total- V" B, R7 Y1 p* X# a' I/ w! p2 u9 L$ m
;;
与当前turtle的交易总金额
% F4 Z% g8 I/ H- ylocal-reputation/ P& Q9 f# Z/ w
global-reputation7 h  G; X- p0 z: ^) ^
credibility4 Q1 v/ e4 G1 w, J
;;
评价可信度,每次交易后都需要更新
+ [. w% n" V8 J0 T! h' V/ k7 M% Ocredibility-all* ~9 q, T  q$ b! g: _) W
;;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# M' U8 [  I8 }; x/ f# }( N
& T  F% N; u* z* x. t$ J+ i
;;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. [- p9 M! F2 v9 S- t6 s! y! K
credibility-one' f& n# @# r1 h+ e- A$ I
;;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+ U* `5 [/ O8 E+ U1 P" L. d
global-proportion% N: I1 F( h- ^
customer3 w. C- T* G9 O2 m
customer-no
. V+ [* t6 F$ G4 G/ K7 C$ D, utrust-ok  x6 L7 u- _, D4 h8 W3 C# S: J
trade-record-one-len;;trade-record-one的长度
2 i4 ?- y' r' U6 S3 \& ~]5 i( ^- x: `# T

2 X" |9 O" Q% {;;setup procedure! W, i* R: ~! S- T6 t3 F' j) v: V2 X1 H

1 @: D- l0 K  r+ h! gto setup
& C7 v+ S% H* l; ~% a% y
  h1 K  h, t( W: J, Dca
' W' Y, F5 x$ y0 ^; a

& c6 Q4 a- L- L! G* o7 Y& Q9 Dinitialize-settings
* J0 ]- F  C: v. @$ p2 N
% j1 E2 V% Z% g
crt people [setup-turtles]

$ k0 x$ A- V* j+ i4 b  u( ]! m3 k0 z+ g5 @4 u+ ?
reset-timer

. d8 D2 ^+ z) n6 o: f6 N
1 ~; D# n3 m% c* v/ M8 Y/ Spoll-class

+ t& C8 B' a; S( j% Y) D- m; x0 n
" ?3 T3 f2 I# F. d: b1 m- t3 asetup-plots

3 M2 |) Q+ S/ i1 g( Q: |) }/ t' e! W& p
do-plots
" `* S& V) s2 e( J' q
end
+ l/ z; y- [1 l. ^) H3 m; ~" t/ _2 I7 A- s0 R! G" A7 J
to initialize-settings
# f1 z6 t* q2 F+ k6 z" N) P( b
8 l1 f7 H# L, a  ^set global-reputation-list []
4 Q  a  Y$ z/ T' f- m

. r7 F. t6 \5 R$ l: Nset credibility-list n-values people [0.5]

: S: p; p! Z/ ]2 j! n$ F. e1 g8 x  E$ y" O) Y
set honest-service 0

3 ]& J% R) G( H1 o- t& M( ^. X* O& {: ?) ^8 x7 L
set unhonest-service 0

7 N, w0 Q& Y. {" b9 O  P5 f$ [5 l% |
set oscillation 0

* V- A# U: m! Q' i0 O) D1 n* E1 z4 L, j
set rand-dynamic 0

! P" f2 F! h; {* ^# R; Z% j4 Xend: k9 S9 e' r3 ^$ h; w9 a
7 [& ^! P' a; a# K" v$ A
to setup-turtles 3 o8 M2 J( y& ^: H; [
set shape "person"
$ j3 _& _! e: R- ~2 o# Rsetxy random-xcor random-ycor
+ f4 k+ y9 }6 W" k+ \" O- Sset trade-record-one []% `0 I0 [% g- V! e4 k. Y7 W5 D

: [- f; i3 J$ gset trade-record-all n-values people [(list (? + 1) 0 0)] 7 I+ U/ V& t+ r6 U/ f
& p6 c' b, P: S; X+ w. v7 K2 y
set trade-record-current []% K1 J: L! p. U* a! L6 F9 o
set credibility-receive []) P/ P: g* V0 w, _" M. E9 f
set local-reputation 0.5
5 C) Y: t1 E. D3 pset neighbor-total 0
+ q+ R/ ?$ H4 d" Y: F: \set trade-times-total 0" f8 T* }4 F' M
set trade-money-total 0$ A0 ]4 F) I# V8 G4 b
set customer nobody
6 I- ]3 T' o. ]! K7 Q/ q2 P. A' ~' Tset credibility-all n-values people [creat-credibility]
1 Z4 ], i$ d/ m$ m6 H! H& P" ]set credibility n-values people [-1]! ~# X6 I- d- ~+ L# Z9 V
get-color2 h8 m" d" L/ V' {- d5 I, {9 {

, G# k4 P5 i9 j1 D* j* c1 L: send
- t  h& J( Z3 x( [8 ~. T3 K! Y7 D) O# q$ R
to-report creat-credibility, h$ r9 f( e& ?% d0 s% F$ q  x
report n-values people [0.5]
- M3 B, x- `+ B. V9 h* dend
1 A! i/ R1 l! i& e, ?7 K$ K  G: C8 i  ?5 i9 ^+ @, }- X$ h
to setup-plots2 n1 _& }! X+ h2 ], v7 S

, D, J- N4 R7 A- L  I, vset xmax 30

3 [+ \3 T& U. Z5 d2 t
' G6 i1 \  m5 uset ymax 1.0

- [& e+ y/ [& @! }, u9 @. N: y* Z0 @) `" h0 v/ S. ~2 C
clear-all-plots
8 B! G$ G2 |- H  a1 F3 @; C8 b

* U$ z6 r0 q& ^setup-plot1
5 E* q  Y; G: ?- {* F

  u4 J& N" u4 Csetup-plot2
$ ^9 w2 S3 z. U

$ H8 X+ |# J% E) H+ K2 ~5 Ksetup-plot3
+ Q% y" {( [* v
end
5 c7 Q4 Y' }# B& N0 L4 M; u5 ]) j" [
;;run time procedures
! S( U8 s# T2 r+ {3 O# j# V$ o" [. v% k# d3 i1 y; N
to go
8 s# W) N8 c& M. b$ x6 V. o7 C" G2 i7 c3 M
ask turtles [do-business]

1 \$ {0 \0 K; b, w* `) Y1 mend/ R, V" [& p( i

3 D2 \) Y- N* |: e, O, K$ Xto do-business   J& r( s1 {/ |% s

  X( k& X, ^& ]" A$ G% H! ]6 z7 r1 |" q  g# p2 f; i7 e. {0 M+ q
rt random 360

6 g  A3 ^. I6 T2 T; l/ i, u! Q: B8 n% M9 R- s* u% Z
fd 1
  J( e( G0 U  T9 }4 \6 |" U. S1 q

- e7 z- W9 C% ^ifelse(other turtles-here != nobody)[
& m+ d- `  k" ~
1 \! v" n$ ]: O/ V
set customer one-of other turtles-here
& L+ A2 z+ c, h
. z( @/ y/ p/ \+ L
;; set [customer] of customer myself
5 ^6 P2 S; n5 W& i
+ Z& {9 a6 F! P4 ^' W8 u1 R
set [trade-record-one] of self item (([who] of customer) - 1)
! t3 L4 e5 N* {" M[trade-record-all]of self
4 m3 ^3 I, y  V& u+ K;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

8 M1 m8 y% g8 r" j; \' c* g: e5 W2 T; b" {
( n6 k) H0 n  `: \$ Z$ f7 W$ {5 cset [trade-record-one] of customer item (([who] of self) - 1)/ l! r# i+ F5 O2 x' }
[trade-record-all]of customer
: j+ o2 o: a8 y7 j) Q2 h4 V

7 e$ i3 A# @0 d% |8 b* Rset [trade-record-one-len] of self length [trade-record-one] of self

0 E- E7 I% Z( p* d: @" R9 f# `! p+ g3 R5 Y8 a+ e7 c' P& R# T
set trade-record-current( list (timer) (random money-upper-limit))

1 M3 H& |6 S: n4 ~
9 w' |6 R5 w$ Uask self [do-trust]
5 p5 e. ?3 D* c;;
先求ij的信任度
2 Q% [1 K* \! r# C5 D1 L$ ~
, @( M5 X6 {9 [if ([trust-ok] of self)* s. w' F  M# D; O, t" Y
;;
根据ij的信任度来决定是否与j进行交易[' Q  r: b; o* Y
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
, P( {9 f' b3 d5 `. n6 D2 ]3 j8 a' s# F' ^& x
[
# _4 v8 j$ Z8 @) t1 a- }6 I! j/ }
5 z2 h& Q8 _5 _; H
do-trade

3 b- `9 ]- s; l/ ^% s& s2 c+ C( ^
' b1 w$ n( O& Q! Supdate-credibility-ijl

7 t( E% I& h7 ?( O& P/ O
( l2 R" K% m% \5 G3 `update-credibility-list; Q  ]  o' w; _& L7 f0 c
( _8 i8 }. E+ k& X
# }8 l& H5 F: [  a
update-global-reputation-list
' f. j2 ?9 \! x
# ]+ }0 v3 U6 u
poll-class

8 D$ L- D7 Y% b# J/ H0 H* ]8 u6 @/ ]3 U9 w/ \' U! K3 f
get-color
1 n+ Z. h% {3 w# C. c# B8 ^

! V' Q- N8 X8 F5 f8 z- {# Q- K]]
0 \: `4 d# X2 ]9 X/ I+ n; `. j1 `  S
;;
如果所得的信任度满足条件,则进行交易
; E" N4 d- b, L: _/ e% a
7 ?, j! ^- y1 D7 ]# v[

6 o5 D/ S7 N/ x: a- s% P7 o+ @) }$ n9 }/ A! p5 C) v7 ^. h# O. b4 A0 I
rt random 360
8 ~% A) b' o; e
  P# H) S3 `( _: z3 k* m4 g* X
fd 1
4 h$ |5 S9 O+ k- X1 ~5 h4 T* D4 \
3 L2 f* q" f3 ?, g# }
]

7 |/ B- c8 ~' Y+ m8 p
4 ^! {) f. U8 T; @end
% f& i. O. l2 O8 z2 N8 T2 z
4 ?9 n6 d! ^, w, ]' [. b
to do-trust
. ?" Y) ]6 C( h% C9 aset trust-ok False
2 T, ~; o. d% l0 t
# ^8 ?/ n! |. U; o9 s* O9 }  h
7 [+ R! f4 X$ M7 x. Z  m) U4 q
let max-trade-times 0
1 p8 k" b+ F! |- V/ y4 i2 c* Tforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
3 X9 w6 X& n  M6 Rlet max-trade-money 0
) b: c: Y2 ^- _3 Bforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
4 ?' I4 D- S+ }) y2 w# glet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
7 f' z3 v5 P2 P4 D7 v1 r9 u0 b# i# @( E; F$ j
& @/ Y" B9 C' a0 f$ r3 j! r5 Y) I  t
get-global-proportion1 h" y: W9 r5 c, I! g+ H% F
let trust-value# k+ I- w1 H, a# v' z
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)
# a: C* f9 B" r! z! L3 f% h
if(trust-value > trade-trust-value)
4 J8 `: A: O% p* P[set trust-ok true]2 y* q2 v& e) t9 Y
end0 W" k2 i" u, E
+ _; R- y3 |8 t5 @4 W
to get-global-proportion! S# b3 F/ ]! }( j1 ?. f
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
) ~: G/ t9 r# p% {6 ~/ Z: g1 |. l[set global-proportion 0]
# X: A, c% `+ z0 }- ?: y' ?[let i 0
' [7 }5 z/ r, }$ M: r* Qlet sum-money 0! o2 q- w3 m* p! |& W4 n: t
while[ i < people]
4 G% w; z9 W' v5 t[
8 j0 N; F/ g$ W' X" o$ n1 u' u+ Jif( length (item i2 I4 K- |" K1 X
[trade-record-all] of customer) > 3 )

: z, y( C8 s7 q. @[
3 g2 a+ X5 f- M: rset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
9 s9 a. `0 d7 n$ F]
' A& g6 N' ?" V- Q5 B]
& h2 s3 p$ a8 p+ q( x5 M$ ?" olet j 0
' G% S: A$ [/ o7 z5 }let note 00 c+ I8 m5 K/ M/ }
while[ j < people]6 V2 _5 T4 `9 Y% {; t
[
* _3 }4 ^. e: h6 Eif( length (item i
& U" {) J6 ?/ l  U* H8 ?[trade-record-all] of customer) > 3 )

- _/ h7 c; u) @' D0 j( v) W3 z) j[1 J& f! C9 k, z
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)' j& J6 o1 P9 P5 V+ f
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]* D2 n5 s3 R8 T4 s9 o" W! w. v1 F
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]" v4 Q; p( I/ `3 e7 e1 C; B
]
7 Y7 c( C; h8 A+ j% x' u]( H, n% |2 @9 ^; x, e% U) k/ v! z/ ^
set global-proportion note5 a! t/ ^2 V$ z
]7 _, A7 h& f8 B
end$ A4 D0 `  s  ^
" g; ^3 |, I& @1 b% v6 v8 h5 s
to do-trade2 \: d# A5 h# a- \1 E
;;
这个过程实际上是给双方作出评价的过程( t! b9 Z. J! w+ l  r0 D
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
8 p6 X) g6 \7 y, _set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
( e5 M/ M% [6 X0 R/ yset trade-record-current lput(timer) trade-record-current4 X9 t( D, o6 `0 I3 r% F$ ^
;;
评价时间
" a) {; j6 G+ N* m8 \" [: pask myself [
; |5 {  x0 k! ^) y8 y- W0 {update-local-reputation, z  t! i. J2 o) L/ d  U9 Q
set trade-record-current lput([local-reputation] of myself) trade-record-current
( O2 Y( r3 n* j/ a]7 K" {+ `: d7 e* ?% W
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself; A; `2 d8 S) T2 M- \; H% C
;;
将此次交易的记录加入到trade-record-one9 y0 r+ L' o+ ~+ p
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
  @) R0 r$ D  nlet note (item 2 trade-record-current )
& H! h0 {+ v6 B% `0 d9 F( g# rset trade-record-current
0 y5 q6 L6 l; e(replace-item 2 trade-record-current (item 3 trade-record-current))
2 X, ]6 U9 p6 j8 K/ U$ j0 F
set trade-record-current
% u) i$ `1 g' V(replace-item 3 trade-record-current note)
! d6 b2 Q& w4 ?* t* M6 c2 c  o. ~9 ]5 }) Q+ r

4 F/ m3 K3 P8 F) I4 g5 C9 ?ask customer [
6 Z0 V' _. O9 u6 U" Tupdate-local-reputation" g& N( Q' g' C5 L, t' O: s
set trade-record-current0 Y; z0 e: k/ N! x9 i# m
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
9 h% ~5 o8 @; S4 w' o- ]0 x
]% @0 c6 j( Z; J& `2 G

8 t9 ^& b% H$ E2 s
1 w% o  H- X3 q( u
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
" Q' C4 r5 i" B( D5 C

4 r0 l$ t2 [- |( \6 A% Wset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))8 }0 Y6 P1 ~; b. E2 I7 U2 s. @
;;
将此次交易的记录加入到customertrade-record-all
' H% N8 x/ z3 e% w1 V% T2 ]end& E! w9 e, T2 z* q
# X9 ?& h; b, S0 i" N- f' w& Q
to update-local-reputation
$ V0 u9 g1 k4 p: J: \: C- ]3 }9 `1 {9 Bset [trade-record-one-len] of myself length [trade-record-one] of myself
7 K% o8 X  d' G1 r! d& V; S1 s1 ~" J" g5 m0 [7 O

' R0 r7 Y1 E7 k0 d;;if [trade-record-one-len] of myself > 3
3 u5 C" @+ \# H$ s! o
update-neighbor-total
$ e3 E4 y% H5 C* k;;
更新邻居节点的数目,在此进行
0 R1 z+ Z$ I5 t% a, ulet i 3/ L2 D. ]9 C+ E, g2 t" G" N
let sum-time 0
; L- V4 |6 R/ C! Dwhile[i < [trade-record-one-len] of myself]
' R. b9 D! X3 R& F, [2 ~) S[- V2 W/ F2 ?: r% |
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
  B, z2 X/ i/ j2 z2 R- Hset i- f7 j! q5 `  O  H4 P1 c# B3 ^/ Y
( i + 1)

- N9 O/ T+ v* O* S/ ^( o1 J2 s]% j- j% T, {! d* p: W
let j 34 G4 g; |$ n$ N- n# j
let sum-money 06 d  t' V* y; Z: ^+ e
while[j < [trade-record-one-len] of myself]
. ?/ h/ P( M/ |! G! l# a: j  V[8 `: m) B" y) i0 b+ N' L
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)) o( R) e8 H' X8 z/ o* L
set j
$ T7 x# D$ `9 m0 _2 R: Z( j + 1)
* A! `7 ~5 v/ w2 ]  {
]
" I) M, w2 _0 _6 I9 ~let k 38 Q  w  k' M8 r- m4 }
let power 0
6 [; [7 g1 _) q: s+ K( |let local 02 G0 n, C- W# @8 }6 b6 e! D  x
while [k <[trade-record-one-len] of myself]
9 W; `' T' Q" B5 \, V6 B. p[
  t5 ~( k7 \4 y2 t; iset 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)
" ?* g5 f1 R2 o# c9 pset k (k + 1)  `/ ]4 v5 z" D/ K1 y+ g0 \; r
]. g& c% b2 b7 p, z- c) ]# T
set [local-reputation] of myself (local)
- W! ^  G& g* r) a# |# _# {end
# b: ?, [1 d# w2 t: A" V7 J& u8 G! r6 V) D& K8 W
to update-neighbor-total
6 n" ^0 M! u, Y. j, w! `
: f; S3 j# s1 Q( _9 @' tif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
! w6 `) z0 a' r/ b. B+ ^% G
% `) V) \9 V3 A3 T9 R
( h9 C, _" D; }: p6 j% g
end; U* w; a8 q- ^# r8 R3 I) H7 A
3 w6 @, r, a, g
to update-credibility-ijl
& E( Q) Q" H+ K3 X& S3 f  t  W- C7 D* D1 p7 O
;;
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。
5 ^% |! d* U2 Y! |. w, G: Alet l 0
+ Z4 Y/ J/ W  ?, u% S& Awhile[ l < people ]
. N+ u# g% A1 ]" n;;
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
9 h' o/ c3 n) l& d! l9 x. f[* t  R+ d; Y" W" R7 I+ A
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
* ?. F: C* z& y1 A+ W2 Vif (trade-record-one-j-l-len > 3)' n! @0 z0 D2 n
[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
" U/ N: Y  l8 g/ v. L* olet i 3  p3 X9 \% i" \6 g  x
let sum-time 0; ~# ?3 S. K7 g4 m) }% n4 f) k% h% |
while[i < trade-record-one-len]
1 `" G; e, R0 |7 k[
' I. h) J/ @5 _1 F, [: g  Cset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )" H( p6 f. f2 S
set i. ]/ N; B( y, _6 l7 U1 w
( i + 1)
4 n6 {& T7 x# j$ s" {: p
]( |( s- t9 N5 I) |
let credibility-i-j-l 0- _8 h- ~  S# r
;;i
评价(jjl的评价)7 [& T0 z0 ?% \  ]4 {
let j 3/ k) Z: Y/ S* f, a3 s) K
let k 4
+ F% D! x- E  x' u, Qwhile[j < trade-record-one-len]+ p. t* |' L( D
[9 C* E) N% ^/ G3 }' C' N7 ?3 S
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# E7 K. G) l3 W9 \7 t
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)3 z, P/ J& m! V# L0 O4 m- ]3 l+ \" d: i
set j4 G/ O% N  E) w, q
( j + 1)
) G( {6 E' {) p, {- C" _; Z
]: p$ e/ O6 ], b, t0 q
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 ))
0 l$ _$ F( w% \& r) O" A
+ N5 w  a" O  _( c- C3 z, N

2 F6 g9 E1 ]! t2 {1 alet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
( h/ w( i7 V) U5 S$ g) ?' x/ _+ };;
及时更新il的评价质量的评价
, T: l+ ~1 t9 \8 F2 q2 u6 Q0 Rset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
( L0 C3 s% G0 L; Jset l (l + 1)6 w/ {' {' b1 H" a; @
]
% a" N% U7 r+ s$ eend' p  B! D0 M' f( E- T# x4 {0 Y7 q
7 x" S# m- D8 ^6 x
to update-credibility-list
& R, C) F( w' t0 r1 Dlet i 07 H. w" p3 R+ J! g* I; L% L6 ~
while[i < people]+ r; B8 P% |# |; Y5 _
[
( r% t! N- c' \5 x# rlet j 0
2 E5 H# O/ e4 [3 Q5 G% alet note 0& L3 v; I+ A% Z5 s# ^
let k 0
% B" q; c7 ?$ K( Z! R2 @;;
计作出过评价的邻居节点的数目
( J( q. l5 J2 l, X# W! }5 B8 a/ iwhile[j < people]
- S' O7 c' s( H, }' _5 m[
; C  [& O0 e/ P" ~( b% Rif (item j( [credibility] of turtle (i + 1)) != -1)) _) s9 X3 W! N3 l( ?
;;
判断是否给本turtle的评价质量做出过评价的节点
3 J  |* v8 }- x3 y0 r/ H! G/ G[set note (note + item j ([credibility]of turtle (i + 1)))
: x/ a. a8 {1 |  G  r6 s* K- Q;;*(exp (-(people - 2)))/(people - 2))]
3 @* ?. a) ]. F, m( `. x4 r7 z" [
set k (k + 1)
+ q- x0 c* [1 t! v]6 b2 q0 `) v4 g1 K, [5 U3 S
set j (j + 1)
% L4 [, C" P! x5 l  p9 |* ^1 d]
1 c4 g+ |2 f; U% D; yset note (note *(exp (- (1 / k)))/ k)
5 `9 W7 y7 d' ~0 V- Fset credibility-list (replace-item i credibility-list note)
3 M, [4 `) G" j4 Kset i (i + 1)/ {* N. C6 m' b8 `' g% u
]
5 M; ]7 X5 V4 T* V% g* U7 mend
' s  T. ^# d; [8 l6 `: J* @! [0 {) h/ o+ i* c: @+ O/ f
to update-global-reputation-list
; V; ?& ~% }7 R1 B% |let j 0. E" _  W* R2 d5 K
while[j < people]
( `$ U; G0 p  o* r7 `$ `3 U+ b[7 ]) Y/ g$ J# ~) I0 H6 u2 i/ \
let new 09 q' E$ Q  n+ @' ~. o
;;
暂存新的一个全局声誉; T) s/ g1 Y' o# m* B' F
let i 0
' u% P7 k0 Z- P' u& Jlet sum-money 0# q7 d  b2 i, B% y1 U0 }) B8 b
let credibility-money 0
" c) l$ r' r& G5 s; e; Lwhile [i < people]# Y1 t. L! V7 w  `
[
/ j( b2 h6 E9 @) \set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))& q) W- A* a! B
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
  O* Z' Y  x9 m. l% l4 b! eset i (i + 1)
9 r% o8 V, a% W]
! m9 J& ~6 B  d( G1 x$ R6 |let k 07 ~  G8 [7 P# D* `& r, `. K
let new1 0# l1 h6 o! R% o" b; a
while [k < people]
, _' h$ A" o9 f+ u3 \5 t[
5 u+ l  m4 L/ F+ Nset 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)
8 x1 ]/ {0 @# k0 J. Kset k (k + 1)
7 M+ y$ z6 c5 l/ r9 e$ ?]
( ^- x+ E% x3 I* t( W0 v* h& Kset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) % j; X# S; Q$ }4 Z6 M  C2 u  n
set global-reputation-list (replace-item j global-reputation-list new)
; A+ ^7 M/ M( i9 W9 u5 Yset j (j + 1)
% o* X+ `$ V$ T* \1 W) o9 H]. Y0 I6 |$ b2 f4 K# n' I* d& J# g
end* x7 @7 Z( {# k0 O& b: h

' J0 j  V9 E: ^0 Y5 g9 o  j/ H& S3 m( R0 v# v% E$ w" }  T

3 q4 ^. w% ~5 Z0 E  Mto get-color1 W2 L- C  o' [4 k
) A2 _% _+ C  j% Q& }% v$ B
set color blue
1 C' }7 H( [# y' G
end( P- d& f7 {/ w( c
% w5 ~. N) m) ^1 S. N5 z$ J# C
to poll-class( u0 k- R( u6 T7 |1 o
end& I. C' u& Q$ Q- J' U( W2 `
; r8 J0 H5 l& p3 i
to setup-plot1# b% n& h6 a6 j& n
, {5 ]" B  \$ L
set-current-plot "Trends-of-Local-reputation"

* v' h5 W& B: L8 Y; b6 `
) P9 l1 y4 A( Iset-plot-x-range 0 xmax
! b2 |! K" p1 a# D9 B" D0 N! Y
; N% K- y6 U$ q8 `# w
set-plot-y-range 0.0 ymax

, }. ?' D2 w- C2 x& qend0 Z) t7 C/ c& X/ o7 V) S+ `
" J$ K) i9 l' ]" T+ a1 Y
to setup-plot2# B0 l; a" ^  S/ s: Z& c3 x

- U; }, }* R' Nset-current-plot "Trends-of-global-reputation"

5 e# N5 C& ^5 y7 L- r# M/ k1 D! p$ A* L5 w% R% C6 t
set-plot-x-range 0 xmax

% o9 ]% B' N$ ]9 l, c, u
& z8 P3 j: a( {% ~set-plot-y-range 0.0 ymax
* }5 L1 c: I6 X* G  e
end2 v! x6 U; {3 j4 G) X
# p8 ?! \* p2 f; R. o; V
to setup-plot3
- y& b; @+ o& B- A, \+ k0 b. n1 f0 ~7 P5 c$ M7 O% G8 E0 o
set-current-plot "Trends-of-credibility"
. b7 u) P3 d6 o" t* |2 F8 n: w* |

2 ^8 |# D, s. iset-plot-x-range 0 xmax

1 P& B7 |" p2 {3 G
4 \  g) Q" C" v4 S! Fset-plot-y-range 0.0 ymax

% c' z' t6 c1 A5 Y+ m5 \6 G5 Rend4 Y: i" l1 X* r5 C; ?; r
8 e: }& S, C+ P% j2 |/ B8 J
to do-plots. b% I/ d1 [0 E0 R% p4 Q
set-current-plot "Trends-of-Local-reputation"! h5 e( g% k# [" ?& P! g( ]! j
set-current-plot-pen "Honest service"
* {; B: L- n% r9 L7 }. G( D0 T9 oend
0 V' q& t; C! o/ @0 ]* v/ O
& f1 C. F& Q, e% {7 j9 m/ |3 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.
1 m5 p# d' s. b+ i$ x
% h, D5 o' l# Q' Z2 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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