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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:
1 f. A, b: J8 i/ S4 ^to do-business ! _$ W  h0 a5 K+ @( W  K9 s+ D
rt random 360. W0 A5 g: X3 n* ]. a' z
fd 1+ T# t+ Y1 ^7 ?8 f$ Z2 l
ifelse(other turtles-here != nobody)[/ e" ]6 N; d6 K& 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.3 x! V' B: h* y
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
6 p2 A7 R/ Z8 k/ @   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer6 u" B$ z% }0 P0 N2 Q7 r
   set [trade-record-one-len] of self length [trade-record-one] of self0 V& U$ J( L2 W% ^' ?. J
   set trade-record-current( list (timer) (random money-upper-limit)). [7 {" {' `) N/ F: T3 U4 ], r

7 ^( H" u+ U9 ?7 b! R% ]8 F8 H问题的提示如下:
- [; C* n7 [+ L
+ u6 h$ V8 a; e" {0 _1 {- Xerror while turtle 50 running OF in procedure DO-BUSINESS3 Z, B# @/ @' n7 y( `+ B0 _6 I5 B
  called by procedure GO
5 [# i9 x3 Y! [" V  E4 DOF expected input to be a turtle agentset or turtle but got NOBODY instead.
8 M. T0 t5 l: d5 F' ], `% Y) x7 I
(halted running of go)& H0 [/ C& m. l  q' E" ?

" r1 E6 B6 x/ v, X% f4 j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~~
% z$ `0 \+ s4 E; O7 O, |. a0 J" j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
5 p, Q  }$ O- b0 \6 F5 s' Dglobals[
4 t* H) n+ N% @/ b' fxmax
! T6 r( h% J, F% B( B$ p: Bymax- m' I9 D' F' M% w: I6 V' q
global-reputation-list
8 {& N' p& S% y6 P' ^7 M. c, k
4 ]1 v1 R& o, [. x6 G;;
每一个turtle的全局声誉都存在此LIST
4 e4 Y/ H9 s/ ecredibility-list
/ M+ y. ?9 D% u9 w;;
每一个turtle的评价可信度/ c: Z! E+ i5 p( e3 b
honest-service2 {9 \2 h) a7 s7 I
unhonest-service& H& P& r: c: a5 f
oscillation' V. \& e' e, c6 L! n. R4 m  {) P
rand-dynamic* m8 j1 s! Y+ a5 k2 ~
]8 {: w6 j, e0 T$ C7 S

: r* _1 c3 b/ Lturtles-own[
/ I1 |$ U2 ^# X, O: T! |9 ttrade-record-all
" u* k- C8 E# @9 G! p* V# x. B;;a list of lists,
trade-record-one组成
) X; d4 F$ B* l1 Ttrade-record-one
! u* B+ o* G8 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
5 ]1 r9 m6 P, x9 ~
# d6 B2 h1 N- r+ i;;[
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]]  F/ t7 Q: I" J' Y/ C
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]. ^: d+ L0 k8 ]# j# r
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
& @; R5 X1 N( a' h) W: ineighbor-total
& T" L/ {$ E! G% b;;
记录该turtle的邻居节点的数目! A+ U$ S) M5 R( {# f
trade-time
' }/ t' `( c1 ]1 ?' V- v;;
当前发生交易的turtle的交易时间: ^0 V. s7 B+ ?' G' G" p9 \3 d  m7 [; k
appraise-give1 T* _2 g5 i3 f" ]7 L
;;
当前发生交易时给出的评价
5 t4 V, p8 z% s' y3 P; Cappraise-receive
: K& [7 o3 R$ T- H;;
当前发生交易时收到的评价
; @9 w. B* J, ?. t  K4 N- l7 zappraise-time
2 {$ w) A  X! E! o;;
当前发生交易时的评价时间" w3 [3 T4 T% _# h% ^
local-reputation-now;;此次交易后相对于对方turtle的局部声誉$ Q6 O2 M+ C/ K: s! S
trade-times-total
8 a9 V9 ^. c' l1 _: A;;
与当前turtle的交易总次数
- r: T) O0 c8 r) dtrade-money-total
% c* `0 K, {; H0 \, {;;
与当前turtle的交易总金额
, g8 g6 ]5 N" L- A. k# W! _; Clocal-reputation+ j! }  V; b8 |% M# w( N
global-reputation
. I9 e3 J3 {7 u# |6 x/ ?# g- zcredibility. o0 G# E- R3 n
;;
评价可信度,每次交易后都需要更新; X; Y9 ~. |1 n; k' ]3 I, \( N% k* a! N
credibility-all
* K* `* m9 m& T+ F$ n4 E; l7 [;;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& a% _0 Q7 _2 s  A1 S/ \
& ^: h$ x: O) n1 T
;;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
. g: P- m' A* v( y7 E# {# ocredibility-one6 p7 j( g8 x9 ~- ?1 m+ G  }& C, T
;;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
" u4 S1 ]3 i9 {1 g. z! sglobal-proportion
% k% Y$ V8 F& a0 n5 h  r5 Jcustomer
7 K" u, G9 t: J! O2 acustomer-no' E. _4 _" q0 T3 F/ r; V) c3 Q
trust-ok: B! c& i6 Q. Y" U" [9 o) M0 V
trade-record-one-len;;trade-record-one的长度% j1 _: Z" Q( t2 n4 [% e  C
]
  t' D6 K% s: a2 j; L- K( S0 U. a- `9 R. r
;;setup procedure
" b; u  k! _* w3 n8 h$ g. {% {; \7 \* a0 ?: B
to setup4 `2 j6 L6 L, n6 }1 f
9 g1 O  p1 g5 W. u4 f( k- [' f1 q
ca
6 H# T. y# K3 ^0 i/ \, y

! n4 q# l  A8 g1 Hinitialize-settings

7 r9 V2 ?! `! s1 U$ H( b  T
. i* @5 O8 d5 v+ G6 |( ?crt people [setup-turtles]
  O$ B' V! l; S

) ?) h5 H$ A5 Z6 s2 Y$ P2 }reset-timer
2 _" K& `; ~: B, C) V* w! O7 X
: u" ]. `' ?2 U+ N: X
poll-class

+ X) N6 D+ l6 R3 b/ h. @2 {- E
: C3 \$ W3 [0 P* H6 j+ wsetup-plots

) O+ E; L/ J% A& T% G6 M  z. h
5 S$ Z8 Y, x9 l& k* @' jdo-plots
) R  }) L8 A  x" Q
end
3 j' I4 m5 {2 ~$ O, W2 {; Q% `) Z0 W" ^. H4 G
to initialize-settings
& N2 u2 d- @3 I1 d* n; g0 \* L' o- I' D
set global-reputation-list []
7 \' \4 T8 D; i

4 }( d2 Q7 ?2 G4 `# X" j2 mset credibility-list n-values people [0.5]
+ S; s8 J3 V" v* ]" V! h( a

) ^4 T4 n) V1 @set honest-service 0
0 {( ^9 G5 p: g2 M/ a) Z

" e, r2 h, Z7 I4 g, f: X- Zset unhonest-service 0
, U  {* r2 |6 m; d
  b6 }' c9 H1 x: P: ?$ V) B! E
set oscillation 0
, v% b4 J2 B7 ^2 m7 F' C
2 J/ k  b( Y$ e. N: G% x
set rand-dynamic 0
3 |, [* H2 v$ ^8 m9 }' R  w
end
; ^" y+ s9 m( S+ B1 W& ^8 d+ M
( C: U* f  j# v  w; R2 N2 |2 J3 wto setup-turtles
6 O: O( T% J" }: |* z, k/ Uset shape "person"
. s  Q  Y( G, L+ ~7 O8 i) U. c9 dsetxy random-xcor random-ycor0 h4 ]* n" R' t3 i% Q0 @
set trade-record-one []
6 U! c' ~' X7 K. M
  n  k: D  W( r4 s
set trade-record-all n-values people [(list (? + 1) 0 0)] 6 P, p* q4 P) j5 I
; x3 e8 c* Q" H7 O) T9 I
set trade-record-current []6 V8 m8 u% V# \3 N. P1 ]
set credibility-receive []. i2 j4 S5 H8 D
set local-reputation 0.54 `$ c( p" L! ?- x7 d$ h% j
set neighbor-total 0
1 n. Z8 L# D7 ?1 f' Tset trade-times-total 0
" w5 {/ O9 ~: Z: T8 sset trade-money-total 0
- T9 e$ E2 r& h& j3 I7 Tset customer nobody
5 b" w: m! `; I0 @9 |4 Zset credibility-all n-values people [creat-credibility]
' {$ K+ j! b. n. n4 O2 Q0 E7 hset credibility n-values people [-1]$ l6 u$ L: t) n4 F0 V$ s
get-color
, o" Q% c, \* `9 Q* u
5 Y  r% O6 b* G; E/ j1 ]1 j
end
4 K" G. `5 k4 C0 j7 `/ e. O$ X4 n3 e  W1 P+ e6 f
to-report creat-credibility
" S# C9 N/ b8 z1 G/ ureport n-values people [0.5]
" {' Z- P$ _# X, f* q+ J+ O" xend
. V. v- z1 o, \# ?) T' r: m
! @) u  L9 C% Q% v: W! hto setup-plots5 o2 K5 ~% }  p8 ~* @

8 E, Q7 k( F$ N, oset xmax 30

: F$ F  e4 r3 |1 t( M) W$ t
( F6 V/ Q" k+ }$ X6 cset ymax 1.0
9 Q4 a3 G2 O+ |! g) r5 P
: A7 Q6 ~- N) w  H+ Q7 m# o
clear-all-plots

9 f8 v! k1 R; w; ^. K! h/ h
) X* R  c) |6 B* D' zsetup-plot1

# `$ _6 t/ p4 C1 I  l" N
: t7 }1 ^0 K& h& s! v1 d% Vsetup-plot2
, N9 ]! ?/ @+ o& f- F$ f2 q/ s
- w+ X. J) C4 C  D
setup-plot3

  A# I$ c: s( C/ xend
$ U  V2 }  u  a# [# t9 }+ {2 q( i, v3 F, e
;;run time procedures
2 a* h0 t6 J5 |9 T0 l* b( b6 k- X
# J5 i/ C" \, s4 c7 O" e/ I- L0 }to go
* ^% H  m9 u! E) [" u" R9 S" l4 N, v0 ], T' [4 `) }& j0 I5 _
ask turtles [do-business]

' u  n) R! H3 U: q; lend8 |: h) ^% O/ A, f. @1 {5 n0 T

5 ]# c5 v# @: U! }7 A, e/ E3 h1 Tto do-business
8 K3 l+ o, r3 R# a) q

' A# P# e, F1 H+ ?7 y2 b
& e! l! u. ^7 F( X2 [( irt random 360

/ }( H9 D( U& i6 Q5 t+ Q2 `1 A" X5 Q2 J# a# V% F/ L4 H% e' W- f5 ^: H6 d
fd 1
) q+ a9 ~0 a; T1 G
% C. l$ _$ S0 C2 P& d+ m% O( L
ifelse(other turtles-here != nobody)[

5 u0 Q" u8 ?" O- ~. Y: I9 G4 M- B: i3 z" o4 a. ]) c( n
set customer one-of other turtles-here
2 |" H0 ~/ |/ H2 ]0 o
' [+ Z0 q% P) j( ^5 t4 W- n! F
;; set [customer] of customer myself
( X" d/ u, N2 R0 N

7 ~1 t. M; N( Bset [trade-record-one] of self item (([who] of customer) - 1)4 E( V5 o* V: ~& g1 K- P
[trade-record-all]of self
1 R& B. G5 V4 @0 \( b$ g;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
8 o& a% G9 ]" C7 L% J' i! x

! z- ~  f3 v7 T- ^8 Y% eset [trade-record-one] of customer item (([who] of self) - 1)
  T+ o! u- A  h% I. @, v7 ][trade-record-all]of customer

. y8 q; q4 R0 N# o/ l# z9 E
% X! V- r) K+ k. n8 U. Q" vset [trade-record-one-len] of self length [trade-record-one] of self

6 `: W+ ~* f$ y: M+ C
' w9 H! q: _6 O! `) f3 w. i  @set trade-record-current( list (timer) (random money-upper-limit))

' D  P2 {1 |, a1 g" g5 i% k6 h. A" g) G  r* W- W
ask self [do-trust]
  @. c2 u. i& e1 z& T- W;;
先求ij的信任度
; O% L& y/ \  A+ c
' i6 T  B# F8 W6 Yif ([trust-ok] of self)
  A. l' m* y+ I) ], V% C;;
根据ij的信任度来决定是否与j进行交易[
+ M% L- x. z3 [" z7 vask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself, P# {( K) s. _, O. l9 m
5 o) b& _# E( R3 B2 h
[

5 |# f) ?. [% P2 q7 @
% z4 S) n6 {' Ado-trade

" n- r- O- B( ?
# E) O1 ~0 p, J1 `4 gupdate-credibility-ijl
  j: |* ^  g2 x% K1 e8 ?
8 z' l6 {' C+ a' i7 B
update-credibility-list/ N( \: V" K: H; C

, B5 Z5 ^* s3 d$ Y& m
+ U4 J. F5 P! Bupdate-global-reputation-list

+ K+ [( u6 _9 J  z% S
0 H& h) t4 V, p* e* ~' y( tpoll-class
8 Y8 R: J" G3 H' U9 f6 O

5 h6 v' q/ s$ Yget-color

, A: G: W( v: {) |$ N* q1 {* }2 F9 s" y$ r0 S, e
]]
4 x$ O' a- O& s$ x+ `0 L" ?/ |3 {4 {* c* I
;;
如果所得的信任度满足条件,则进行交易) N/ N% @5 k( Q, ~) P+ {1 Q

3 O- S4 N7 T( W- H$ `* G* @[
; {- W* o! Q( I7 V
6 B2 Y) L  p& A/ \$ {+ _
rt random 360
) q; f5 T* \7 r

# h4 H# T2 |. C) F/ Xfd 1
0 j# Y4 u$ P+ f, [1 K
5 A( N+ X1 X5 ]' H9 }1 i% G
]
8 L& l8 J8 o# k* V

) F, a$ s4 o" }; [4 q7 O/ Bend

: N& K+ U6 o. y) [4 v% K( }
( C% t# ]  k+ D$ V% a: _! f- u2 o' ~to do-trust
  K# s4 o+ t4 b0 Iset trust-ok False6 w1 T! o7 \9 y1 w& B  H) [

/ v3 b% x+ Q9 u  t% G8 m. l9 ?

/ J2 z3 a6 J) R- w4 S+ w# n0 elet max-trade-times 0
% k- ]1 y7 s6 Y' x0 o) T: yforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]4 }5 t% v* @& O# Q8 V, Y" j
let max-trade-money 0! Q3 y7 {, C2 \, `$ H
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]], P' Q" j) F% B. d2 _$ }
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 t5 S0 e) K1 l! i8 D0 u! j# f: D) @4 `" ?; z: n

0 R' u9 }( h$ K# mget-global-proportion( U* c' e' r2 H) z2 G6 m
let trust-value
% T7 X4 }+ Z4 Q5 m  g4 {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)
1 u; h& o2 B1 v. [3 b4 {
if(trust-value > trade-trust-value)
0 A5 \. B/ `! H0 O( H9 z" D* W: N[set trust-ok true]
9 \3 n9 U& b% k8 p8 \; Send9 G: P6 O' V8 x" E( v7 H

) x% b: L/ B+ V2 V) C# R" _! eto get-global-proportion
/ D0 q5 N2 ^. g, g  }# hifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
( I! d0 b2 q( O) N[set global-proportion 0], f; s: k$ l) H0 d6 h) o
[let i 0! d! _2 R$ A6 b8 k# N/ J, Q6 e
let sum-money 0
0 k9 N) H4 m# z. a1 }. P: Xwhile[ i < people]9 o% r% i) S5 n0 s; @9 }
[8 l/ R' V- p' V: U$ {2 B! C
if( length (item i( F' f# ]. s) |  k' O
[trade-record-all] of customer) > 3 )

/ ?" v6 v$ n& F4 _[, a- u# m4 l  G0 l& b( l' i
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
" V  P% Q! |8 N7 y8 e! H6 d6 }4 _$ d]
! R( o6 C, A. C9 \]
6 R! B; l' X7 \5 ^0 rlet j 0
0 Z0 F7 M, a; i0 x. @let note 0
( {. S" n( S1 _3 ]# vwhile[ j < people]
. @  d' L: b/ H4 z, A7 u4 U9 ~[
0 q; m! Q. P9 Z$ xif( length (item i
$ h- D* s1 \& G3 P! e& N5 q" B" ?[trade-record-all] of customer) > 3 )

9 ]7 w0 ^# N+ ]/ q( D5 {# Y* V[) R* \) c" M* M+ [) v/ N
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
4 ^$ \. \% E" D0 @[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)], t5 {" f3 C/ t0 {( Z
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
) [% Z& n4 a% p6 b: C]/ }( Z' m# K+ X* C0 u
]
2 j; \" J! e5 \: `) pset global-proportion note
! f) J! D/ @: T/ a+ R* |# G]
& c. c* y. z: A+ C- i6 n% N8 \5 dend
4 R& e& ^/ Q5 Z; I! g8 B9 M" U
2 J# H, f" E& c' j$ oto do-trade
2 Y0 v  H2 I* ^: }- l" E1 A;;
这个过程实际上是给双方作出评价的过程4 ?8 }* F1 G" g4 c8 t
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价7 [) V0 b7 d' i, e$ u$ z
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
0 D3 w# }9 }2 b2 \- j5 lset trade-record-current lput(timer) trade-record-current
. S8 p0 m2 J& y( r! G8 ];;
评价时间$ y( T- [( N  Q7 n
ask myself [
$ G1 a8 q9 `, Y& T. }update-local-reputation
9 i6 b/ m/ f+ M/ d8 A: sset trade-record-current lput([local-reputation] of myself) trade-record-current
( ?0 U# Z6 V, {]
/ }5 K3 `# f3 A2 |: [2 Rset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself  p# \+ t# W  _5 s
;;
将此次交易的记录加入到trade-record-one
! d0 ~: @2 z- m7 N5 M1 F9 Kset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)! C6 x2 I! T! H0 B9 b: O% o
let note (item 2 trade-record-current )
3 Y, c- }" G+ O" }set trade-record-current
; h  W& `) g. z6 P# C3 @* {(replace-item 2 trade-record-current (item 3 trade-record-current))
8 G1 z4 O  a4 P9 \: @8 {1 k
set trade-record-current! ]& W! d9 @: }! X8 V6 S# i
(replace-item 3 trade-record-current note)4 ^! M; J1 T8 a' f
1 l9 c* b7 \( a& {

" T; w. v( u5 A8 L, {. ?ask customer [
$ N8 N( ~+ w& p; `8 N0 eupdate-local-reputation. D1 i" Z+ J% c; t
set trade-record-current8 ]! Q, u% X8 {
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

" \+ c/ z% w" F5 |8 y5 Q0 K' q2 R]
& W8 j! o: W9 ~0 B0 g1 Z9 T/ h  t
( _) v$ E1 E3 i3 E+ U
2 S# J" X, Y3 Z0 g9 A8 Q! ^
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
- U6 I1 y9 {. g  d8 L% U/ E) v, e

7 F- W3 I! F* Kset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
8 U, Z6 G$ _& D7 Z;;
将此次交易的记录加入到customertrade-record-all
0 k: t, ^! Y1 b. ^9 Nend( u  o! f; X& a8 h

$ L% B/ A3 Y3 @! R) mto update-local-reputation
5 ?/ K7 |( Y' y9 A+ N  B8 J' Jset [trade-record-one-len] of myself length [trade-record-one] of myself
! Q" G' y# ?$ Z. w" p( T9 {
8 c0 z6 `  L4 o" ~6 V7 I5 J
; s/ T' f3 n5 W;;if [trade-record-one-len] of myself > 3
# B1 L5 k! d5 K) J. I; B
update-neighbor-total7 k' g* l6 d) `' y1 L/ [+ y+ V
;;
更新邻居节点的数目,在此进行8 d. l" W( x5 [1 |0 K4 R
let i 3
8 Y) X1 c0 ]8 P2 B. {9 D5 _let sum-time 0
) K2 x/ O) x" z3 X4 B- f; jwhile[i < [trade-record-one-len] of myself]9 e8 }9 I; ?+ u/ M5 ]7 p; {; l$ ]4 N
[( K, }) K* I1 F7 t" p  Z
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
0 x5 _/ n3 G# T; m7 r9 jset i
( L& R1 |. D: A. a7 l5 {0 k( i + 1)
: }1 q1 w6 e$ O1 {; f- [
]* a' [  ~7 L: r$ r* p; s
let j 3$ |- t% O! U  W8 j
let sum-money 0
5 s( M1 C. p" F  T& Lwhile[j < [trade-record-one-len] of myself]) E4 E: ]/ {2 W; D" j( ~
[$ _9 m% ]6 j+ K8 Y
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)
- R5 }& }* f9 x( ^5 m* Uset j
8 U0 k, o7 X  q$ B5 ?: ^: l( j + 1)

; l- d! ?; u) G9 l1 U% r" R]
+ E) F* Z1 _+ D) e: j. dlet k 3, E9 H2 j+ k! I, k  \
let power 0
+ D8 Y  L* n8 O1 ], Q3 ]: Olet local 0+ K' M7 z; m3 P5 w; z9 M, M4 B' s2 V
while [k <[trade-record-one-len] of myself]% f% L! D8 D9 F2 I* f
[6 D7 o; N+ Q# |- H2 L* Z! l% ~! 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)
+ Y: D- N/ ^) z. h, S" p) Xset k (k + 1)
& Q& Q0 P7 L/ |4 n]5 c, R8 I) d: [( d/ e& h
set [local-reputation] of myself (local). m, l; D1 }4 _! V& g: c
end7 G9 ]# A' b4 V8 l( E2 |

' w; P/ R5 u9 l& Z1 K/ Zto update-neighbor-total
  Y* F. s: m4 n
6 [, L, T$ ?( u5 Q9 q& nif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ], }1 G; j4 n! e; v5 }  m  _

3 p$ Q5 i8 Z) L8 g
: x" o8 T. D: |" ]+ J
end
2 k$ x. v/ t( `: Y3 r5 I: o2 i- Y8 f& y, z4 N# O& ^- N
to update-credibility-ijl
: `2 X- Z8 \( v7 N  g( F2 W, r
" N4 S" j/ Q) g: a' N0 X3 n;;
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。
+ p/ J8 t* G9 ?5 Glet l 0
& }  l! n' E! [& ]" N( Gwhile[ l < people ]
8 N7 W$ e* ~5 a5 ^; };;
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 Y8 M& F) k) |$ |[
/ ~( \" _9 O) mlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
! @* o' _0 C4 w2 W/ sif (trade-record-one-j-l-len > 3)
7 p8 h: o' D  b; K' K[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
# |6 A+ C5 p1 ~0 Q5 wlet i 3* P+ Q1 G! Q: ]
let sum-time 07 s' \- `6 U8 I7 h6 ]- d3 o! e. V! H
while[i < trade-record-one-len]) p# O+ ~0 z% ^* \, F
[7 m' ?0 u5 q, h
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )) n6 x4 f, n; i. c: _) H4 a
set i0 S, T4 i; j' n5 |
( i + 1)

2 W8 R" Q5 `: E7 H]
% U; B) t- a9 U7 ]8 p6 B9 Llet credibility-i-j-l 0. P" F9 B+ X$ [, o! E% s6 C' l
;;i
评价(jjl的评价)  Y  g6 O% _0 p3 p: U3 N: ^# p
let j 3
3 q0 o: E. r* i, b" w8 w- }let k 47 K3 m  i+ G( S9 M1 a. }
while[j < trade-record-one-len]* E* I  V  ?+ x: }7 e
[" X1 G( \" g1 l+ I7 J0 m) g% r8 G
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
" C4 B3 y7 y7 E5 ?) ]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)& }* O4 \' n' D. K. N# R2 R
set j! H# y; F- d2 e) P" p7 x# m
( j + 1)

  _) a. G3 y1 t4 u; H]
  f! g# H( G; d( f) |. T' v6 i: Nset [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 ))
5 h  g: x2 I3 \7 [( j% ~
7 P  l: R. E# A

& _8 S1 G- c1 }  hlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))0 y, s+ T+ ?/ D1 ]. p* l+ k
;;
及时更新il的评价质量的评价5 `5 q% \) {+ B# @2 A
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]8 Z7 |/ \3 E! a9 T. [( D1 [! p
set l (l + 1)6 e/ v4 I4 M" E0 P
]6 `. U# h. O) x! u+ y
end
% Q) P" W8 Q% O1 a! C; _9 f; P& r, L8 ]1 Z" e. R+ `3 J, c
to update-credibility-list
5 O6 H% p0 f* _8 W( j; Klet i 0! P% n" |3 u- s$ @) w
while[i < people]
3 U# Q4 Q1 E' _: f. j[( K0 l1 K# a/ C; r9 c* w! r
let j 0
8 u1 Y7 j% O& \; t& zlet note 0( l8 d, _* ~: u; ?( A# h  W* j
let k 0
) |* |8 R& P% f;;
计作出过评价的邻居节点的数目
% I' d1 z0 [# b9 ~: J  B& Xwhile[j < people]" O/ h8 H4 ]  E& y; z+ C# @
[
. ^; ?7 {' \7 J1 C9 Jif (item j( [credibility] of turtle (i + 1)) != -1)( N2 X) }% z8 {2 M" w4 n) R
;;
判断是否给本turtle的评价质量做出过评价的节点( m" `: E; A0 A% v/ c; X6 S* x
[set note (note + item j ([credibility]of turtle (i + 1)))5 D! P* u0 _8 m5 E; d5 O1 ~; h
;;*(exp (-(people - 2)))/(people - 2))]
" X' C& ?5 G% r3 p
set k (k + 1)! d  ]/ z% U8 x* H) i
]
1 D. y( u9 ~4 \2 ?  _- T! zset j (j + 1)( F  s( j" I: \4 e5 E  d4 D% M9 b
]) ^; `1 Q& }3 B- r4 l/ l% d# z& `( a
set note (note *(exp (- (1 / k)))/ k)
4 u$ w/ l2 M) x* O& fset credibility-list (replace-item i credibility-list note)' J* ]. Y& @% y( g1 }- t! _& y2 K
set i (i + 1)
* Q5 y5 r2 @# x. K: t]4 \1 V/ l2 I; b" f  t+ i& P" K
end
" V9 B& X% s* v& c5 e: @
* L- u% L: o6 t1 C2 _2 z6 H+ Ito update-global-reputation-list
: @5 e, u! _6 B4 Tlet j 07 l5 @5 O# p+ L' v. U: K
while[j < people]
& A  G5 d# r- v0 K: w[1 y0 ?. w* ~' c+ C) D
let new 0
0 {  b& D9 E; H;;
暂存新的一个全局声誉; _; [1 }9 B" s" M& o
let i 0+ e7 }7 F3 e0 P" M; c
let sum-money 0& p/ y: t7 A6 @" C# k
let credibility-money 09 c8 I5 _) m, |4 R1 z: ^
while [i < people]
$ F% |# P, y! g[
, }7 Z9 L2 ~; a# Mset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
# _# P) F* d4 s! m2 z/ A: M0 aset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
( P4 Z1 X# A$ lset i (i + 1)
- Z2 Y  n8 C6 p' P: M! A- `* G4 t]; M5 s$ b4 s- ~6 }  R* L% s5 H8 ?  @
let k 0
9 h& g1 d% N# E" C: x6 Blet new1 0
$ J1 P$ K1 N( L+ ~while [k < people]; h! J% J; t* r
[) M5 k$ g, m7 H/ |, V1 ]2 J. `
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)
0 M% U5 Z! z. C" lset k (k + 1)
. m' A1 L$ ~" S% ]: k7 A]! J( V. p$ \, [6 D6 a& |! B' L0 w# N
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
, D6 t3 b5 a8 a+ J  E* t5 Vset global-reputation-list (replace-item j global-reputation-list new)8 @# S; B: l, X/ ?" S
set j (j + 1)
& L5 u/ h6 ?9 N! H; e# F]2 n2 ^: G" P4 S: F. O
end
+ @$ a- k% o! y1 K" f; H0 Q) n+ q- q
' ~( H" c9 Q# M- T9 y7 U6 @4 y

* j5 z' f1 s+ Y- k7 G6 Yto get-color  A, w/ @! ?7 s' p: d9 c/ a, a( O
- T6 |  L* L* }& n# g# D
set color blue
% V) G5 A, I3 w, Z$ k
end
) B" P0 ~# _7 A, u) ~2 u; r* t( `' I4 b6 a3 f- D+ ~  f
to poll-class4 k' j) z: a' `# @9 u6 H
end/ }4 E& k" h2 ~5 J0 U

3 k, ]9 v4 l0 O* P$ u$ M, n! A( zto setup-plot1
9 F: p9 Q8 E3 i/ z) c% V& s. ]( @4 W
set-current-plot "Trends-of-Local-reputation"
) ~$ s( |# }1 N& T
+ l( O& n4 {6 l' j7 \
set-plot-x-range 0 xmax

& b* @6 u8 Q& s( }! ~& ]/ z! L" c  Q, M0 W9 }' Y0 t1 h/ N
set-plot-y-range 0.0 ymax

+ U1 s4 q2 d3 K5 \: ]/ A+ o4 v  m  I# uend' C' r( T& U9 P6 }

) m# B! W3 N" C2 K1 \to setup-plot22 @6 o3 k- Q7 }7 ^4 G! [

' ~2 ]! u3 @0 r$ Iset-current-plot "Trends-of-global-reputation"

/ }0 I' x  o! e3 k* b: B- J' N- V, I0 {$ |- c
set-plot-x-range 0 xmax

2 R' {' |4 r  _: A% v3 Q3 _5 J$ y- G
set-plot-y-range 0.0 ymax
' [- e, B4 w; ?
end
* Y) S4 ]+ P, l4 Q, T8 f9 t* E$ H4 e' P5 F# }, W7 M
to setup-plot33 d# t! l: H% k/ p6 W. S, U# }3 d
% |& @1 p7 E) w' q: P- Y
set-current-plot "Trends-of-credibility"
5 b/ T! h: I% K6 x
: q! {+ q2 X. ^
set-plot-x-range 0 xmax
7 @5 d( S' B+ Z

  n$ ^8 o! _+ S& Fset-plot-y-range 0.0 ymax
! F9 V( z' `  t, l  y% Q
end
6 x4 I2 ]9 ?0 K5 X3 S) H/ d( Y+ _* t# p
to do-plots" ~, M" ]& Q  @& V. U, g, B
set-current-plot "Trends-of-Local-reputation"% I& j/ Q9 k5 J1 m9 F; X, P9 `/ Q4 n
set-current-plot-pen "Honest service"
& a( C6 q$ L) f& }2 nend9 p1 f& E  S( ?4 x( }
: o3 a: F4 d* K
[ 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." t+ Q6 Q+ u. B; e9 d7 o* w0 H6 q

7 I1 M# _& |1 M$ u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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