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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:9 Z$ D& x6 D3 k! G+ f3 V
to do-business
" N+ d+ E1 y, o# r  a8 N rt random 360" h4 C$ R" H4 e
fd 1
. O8 d5 G7 i; Z& `% m0 \9 @- u ifelse(other turtles-here != nobody)[
; d- u& r6 u) r7 Q; i( K5 k+ `   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.
" ^# f7 ^, q  M' e   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
( r+ K) \! f9 T( _, P/ N   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer  A* }: p9 e0 ~$ P! ~
   set [trade-record-one-len] of self length [trade-record-one] of self
5 C0 `0 H8 f0 G1 H$ C! S8 M$ Q$ T2 O   set trade-record-current( list (timer) (random money-upper-limit))9 ~9 M3 F# G: }: l. A& Q8 ~5 U

3 L5 t2 h# H  k% q7 n4 h6 C问题的提示如下:! ?6 }/ q" F3 E" R+ D
; I3 ^: i- Z* C
error while turtle 50 running OF in procedure DO-BUSINESS! q9 m- y/ `% o0 C9 l
  called by procedure GO- p: X0 x* I: _: M( a
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
9 c, h1 X( I5 E. s. {  e3 k6 e
(halted running of go)
5 ]% g7 F; t; |* E
0 ^9 i& |' N+ k9 A4 f4 u6 p' 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~~
# Y7 S6 r% K( G2 @# L( g; f0 t$ 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; _) y6 r- [& M8 B& R, l; f! R- G4 z
globals[
: c8 N/ ]4 K! u- u, t6 nxmax' B$ J6 x- k: u" y
ymax" a$ u1 K2 v; N3 _3 u$ N# v3 |
global-reputation-list: h( X; P: m% w; f0 a, X# [  ]# v  b
4 W' [/ C; U, y; Z/ X4 B: w9 `
;;
每一个turtle的全局声誉都存在此LIST& a$ @3 ~3 _. g9 A; _
credibility-list
" Q7 W* K+ f# q* e! m- c;;
每一个turtle的评价可信度
  L% |; P9 }) p& _4 H- Thonest-service0 G0 x, u0 b: u' P0 o% ~" V
unhonest-service6 h( T- k/ b+ o) p9 f
oscillation
' M, P! X, a4 F! b/ }7 _rand-dynamic
1 n8 f. W& j5 \$ C8 Y0 P' L) H]
/ e* q" T% B8 J: @) h  h& W, t& L5 b  |
turtles-own[
0 R! a3 n- {6 z( \7 ytrade-record-all
$ z% f, H. ]. Y4 |8 P( G% L;;a list of lists,
trade-record-one组成* e  q2 `: x4 T$ e" g" [* s1 A
trade-record-one: w, t# ~/ d% c1 a% N! g4 Z
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
; E" j& h# a3 a& C  H, x. S7 M/ k. `4 t, X
;;[
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]]
6 h9 r2 E7 {6 V/ l5 U* p1 p" ktrade-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]& p, d6 _, A& c9 j. a
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list3 a4 h% W. `2 z; U
neighbor-total
7 H2 w4 B4 i+ [( k  N;;
记录该turtle的邻居节点的数目" o, E. Y2 t! I# m. T" ?7 W
trade-time
. g* ]* _( X4 i$ S% Z8 c+ O;;
当前发生交易的turtle的交易时间( }' n' n! y2 Y9 [( c
appraise-give
. w) {/ f4 p$ T! M+ \# D. i) d;;
当前发生交易时给出的评价5 o5 p( x- C. g* r# V  f
appraise-receive+ Y8 N- a% ]/ d9 r$ S
;;
当前发生交易时收到的评价
; s1 T8 y, |& Y$ Dappraise-time
9 x& M: O2 c3 S. g7 x;;
当前发生交易时的评价时间
$ s" V8 F2 e/ J4 a% A. slocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
$ `! O' b7 K/ A1 _1 gtrade-times-total
6 f: `/ g2 e1 O6 ^;;
与当前turtle的交易总次数
+ @' G6 @- x0 B8 u( X+ }trade-money-total. O* w2 z( \: i; D$ w, O0 Y) X
;;
与当前turtle的交易总金额+ ^2 t2 |: K1 n2 u! K" R  e
local-reputation* a* p4 L8 f9 a
global-reputation
) B* Q& s4 K0 g( ecredibility+ T! P- p6 t$ f2 a
;;
评价可信度,每次交易后都需要更新% S% X4 y, c% A$ M# g) P( ^
credibility-all, B" V8 F0 a& m" h: j; b4 ^2 [
;;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: w: |2 O2 Z8 d5 ]+ z2 ]0 [
; d# X4 X+ a5 Q& D1 V
;;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
9 @9 q0 b) ^( T! q9 Kcredibility-one- Z7 {. Z: q+ p  Q8 ?* u
;;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
+ j  L7 \7 e# d# `" `" c4 gglobal-proportion' ]9 k' |- C5 @! u3 K7 [
customer
/ h$ y$ Y2 r' u1 S0 d$ W' X8 N  Gcustomer-no
% O) h' l/ d6 g# G" o9 Btrust-ok
& K- u: O; S. V& C2 u; Utrade-record-one-len;;trade-record-one的长度- \3 X! S9 |# t3 i$ R
]1 |1 i" ?2 K" d, S' ^+ y' p/ @0 Q

) C# y4 I/ U% N5 h' W# s;;setup procedure3 O1 L  Z; C7 w1 B9 w) M

# k- r% M7 O: `% y( T" L, Lto setup: v& a$ p) m! s+ d5 v  i2 Y% p

- g# S( L: u! k/ ]ca
, j0 d. x1 g3 k- B0 Q
# X% H  r& E7 m. j6 X  M: O
initialize-settings

: y3 h0 b4 L, Q+ c
; J9 x- {2 L: A- Z  z* \crt people [setup-turtles]
) X* F% o8 @( N$ x+ l  h/ R: ?

7 x4 }% W: Q3 U" Dreset-timer

: G  G9 ]1 D# Y2 J
6 g. r$ H" M- Xpoll-class

& G; a1 H1 I( K; a3 r: @  t5 U
2 Z, G; U. D2 I9 n% Jsetup-plots

; o! B" q+ J6 A+ c# B
: n0 L7 d4 }7 S9 [: Z1 mdo-plots

& c6 f1 e3 Z1 o- r0 B2 _end
! N  N8 A: y( z: c  i5 S0 |7 J& W* n% i8 ]9 ~% w. h2 [
to initialize-settings
* P1 w4 s, o* ~4 Z
. t7 Z) x, ]1 R" K5 Nset global-reputation-list []

% ?" @! ~7 z7 }: I+ K) S, W8 @& v8 K9 {
% A! S/ G7 K& E6 _, U' v- kset credibility-list n-values people [0.5]
" X1 _+ N! e. k4 W
+ R8 J- X1 k# {$ j: S. r
set honest-service 0

: L( c) }3 o9 M. U& e& R- f. D! _- E: A+ J
set unhonest-service 0

# i0 F4 g: ~7 j* t& h, _* L/ r& O9 }3 I( [
set oscillation 0

0 k) S& J  J: V* d+ a3 N5 o5 s/ u1 y1 D
set rand-dynamic 0

7 [- P/ ^, Y* `( b8 l/ J  Send
) F- Y1 Q) w2 C! l' ?  h: o+ a
( Y& m* p* P  \" a8 r* Qto setup-turtles
4 V6 ~4 _( d6 y4 e  l; t+ \4 wset shape "person"2 v# s  a; A& E; J0 i: Y
setxy random-xcor random-ycor
9 C$ q8 B# i5 F7 |. L' U' Fset trade-record-one []
2 q3 U. M* g0 [6 g0 N, _

7 k$ w+ Z8 z+ r6 S7 y- Fset trade-record-all n-values people [(list (? + 1) 0 0)]
/ I* R5 a& e0 K7 ~9 M1 K. b( I) m: f
' R+ r$ y0 |! S
set trade-record-current []
0 e1 M8 ^  p4 i) aset credibility-receive []4 m$ T7 d! y! i- v2 i
set local-reputation 0.59 i' {# }, s" N- e$ s' ~9 x
set neighbor-total 0# P3 i! k/ b( b
set trade-times-total 0* h0 D) h4 D% S( v0 ~2 h  g
set trade-money-total 0% T* q4 K% Y8 R% G. p: h% m
set customer nobody8 u% c- M6 f+ F2 y* T* s
set credibility-all n-values people [creat-credibility]
7 A1 p) X6 e5 P/ T  `3 ~6 Q, Iset credibility n-values people [-1]) X& E6 m8 y! Y  e
get-color, ]) d: _7 {1 I! \
2 T/ \8 s. n1 N! K7 ~* G: ?) Z' @
end+ z- x# l+ c2 y6 y* W

5 o) C: z. E1 E' ^# P  Cto-report creat-credibility8 q' E  D7 {' G9 }" l+ Z
report n-values people [0.5]+ w' M- Q; o$ J9 \0 |+ I0 ?( P: x
end+ C$ A5 |. M# Y% S
4 B8 p" l  w' \( K1 O. L
to setup-plots6 g: c# i: N( B: T% U% F! c# J

3 `$ z6 D9 q. Y  ~9 L9 W+ Rset xmax 30
6 a( G1 }2 D9 P' ?& U
- }7 l1 s( q' c- k. x1 F1 \9 N/ `
set ymax 1.0

( ], J9 C2 U: I9 ?) U! b# l' g3 b' r  e* c
clear-all-plots

3 C4 G0 u+ J0 m; l. w
0 P% {, u! g1 D0 rsetup-plot1

0 {& `# x* G( o# F/ j7 E& |
: M6 d. [/ M, Y- Asetup-plot2
8 ?3 f/ M) g& t! Z! V

" c( E" q- O& F  g; k6 usetup-plot3

! g! K  @6 ^& A9 h2 Vend! E+ n5 Q$ k) g9 ?* F

) c( ^: C! h6 n$ X/ t;;run time procedures
  g" J6 ?; u; }  R3 y
1 `/ U: L5 j6 b% I& Q  J! Q4 _to go5 g: n9 `1 o. m) G2 `9 S, Z
+ {) f* d, X: e' R
ask turtles [do-business]

8 S% t" R) o1 m% p. wend
; u! j3 R, a8 O- l9 |+ ?) \, p- G7 V# W
to do-business % L# i+ z9 `% L' p, ~8 d, e
) c8 g4 r4 ]7 V: |! V& M$ o; h
. I7 P' o% |) c% `, q$ e; C
rt random 360
4 y! }1 q) E! A5 e/ Y+ c
! a% U/ m$ t6 ~7 F9 T, d" \1 j
fd 1
* j# ~0 ?" L' s3 f

, `4 S! t, \6 l  Lifelse(other turtles-here != nobody)[
( R5 m8 E2 ]0 J9 c/ U
" C( F9 |8 ?+ G7 d% k6 i0 P
set customer one-of other turtles-here

; a5 A8 o! j3 A1 I3 c0 Z
  z! U) ~4 B6 d0 X3 @  b;; set [customer] of customer myself
# U7 J- I+ z9 c! s" N

4 s. f3 a6 u6 yset [trade-record-one] of self item (([who] of customer) - 1)
/ o" z% G+ Z3 |: ][trade-record-all]of self3 L4 b2 e: K2 I$ ~  G& {
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
- \: g% z! g% s& _1 _5 ]

! e2 j/ Q$ H2 @0 C# v8 {set [trade-record-one] of customer item (([who] of self) - 1)
( m" T+ h' M6 R2 Z6 V+ Y$ {[trade-record-all]of customer
' ?( N! J5 q! ?7 J( U

$ C) G1 S" Y  Aset [trade-record-one-len] of self length [trade-record-one] of self
  J1 [- V$ e. F. [5 v

+ ^8 M" D( Z  h% fset trade-record-current( list (timer) (random money-upper-limit))

5 w$ r7 J8 e5 O3 N" @% M* w1 G. `+ k0 P5 Y; P
ask self [do-trust]
6 @! o# Q+ s- Q3 u: d3 J4 M;;
先求ij的信任度
1 j) K2 r" b( H- u
8 A6 h, l! v% M. _' v4 fif ([trust-ok] of self)
% O2 v0 n0 _7 {5 u1 W0 C;;
根据ij的信任度来决定是否与j进行交易[
: q( q$ O9 b* n  V% }: {ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself3 D% C7 T" i+ n7 l' h

" J% ^, T. r% A# s3 T2 K[

4 `( J2 a/ e2 v/ Q- ?; k  ^
% o0 U% Z$ e" i% O! K9 r, Wdo-trade
& ?9 C* m( o% v, Q

+ ^( @2 e& U7 y: |; I! k# Cupdate-credibility-ijl
: T3 q3 l: S, X  d- @

% L  t6 H; V/ Q/ {; Xupdate-credibility-list
: ^) S/ I- \- Y% _3 d  ~

/ F/ a) M- z4 D- S0 \; _+ E- g) ]( A2 q! n1 ?1 ]: y: y
update-global-reputation-list
' g! z4 d4 C' z0 ?5 q; s2 u
1 R; y% s/ y8 T- V1 D
poll-class
9 l# ]" F7 b# p, J# }% s

# w4 p, C) q, L7 K3 S" Dget-color

; _% e: x) N) P4 @) @3 ^  o
4 R, t9 o! p6 B! Y  }5 e5 N, _0 v; E]]5 P( o0 B. b' l0 K! }4 S
- l( A. u. o1 \$ c$ X8 E  x5 Z
;;
如果所得的信任度满足条件,则进行交易
+ m& E" Y4 o5 Y; s; R/ _, M' T7 R) U; G
[

: v) H% T& B9 f' |( B7 m2 q
2 a$ @2 Z" W  x. }rt random 360

! Q) D, z9 d/ [; w/ z
5 C1 f: c# v4 @) X7 O- n$ Gfd 1
8 Q+ k& o$ R5 ~5 l7 v/ e% X

# m3 p: R9 n- K- O]
% H' E1 Q. N4 O: _( _+ E

" `* H2 D! S  `end

! l  n8 l+ g/ G- Z7 K  D; A0 W' H. P! J( \
to do-trust . ]2 A' `# p' E! V2 O
set trust-ok False, d# w2 s1 k  Q3 B& z! }/ v
( m, D! V6 i  h% f5 U9 T. t. v1 ]
5 w; c+ I9 W  I; {  K7 j
let max-trade-times 00 K" w+ R9 B$ W1 F  T) e+ ~- [1 ~
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
3 i% {6 z* m" l9 W9 G( w+ Slet max-trade-money 08 T% k" i' ]) l- |$ I0 Z
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]5 w) n1 C% v3 D: O9 G2 e
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
; |; B3 F! r4 i- h- }2 l& Y; W; T, D7 z8 c# Q: U
$ ]3 m" S9 M6 P/ S! ?' V8 t
get-global-proportion  n. U+ u9 h: O! o+ r% D" J
let trust-value
1 W7 E5 K( Z! P' Dlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
% K. U1 N: F' T  b+ `
if(trust-value > trade-trust-value). S% n9 z. j0 j: n! Z6 M& O
[set trust-ok true]
7 a/ F& G7 S4 c  }4 w) Pend0 E& f' J% J5 z1 D( |1 s2 j5 @. A
; I+ J- O: i1 S/ R) y! L) s6 z+ ~8 M8 `# a
to get-global-proportion
4 y/ Z& P0 Z3 E$ u& @9 H2 n) zifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
0 M+ X: {3 F, x6 M- ~% r[set global-proportion 0]
# l; t' X7 {4 k5 ]1 h: x$ j[let i 0
0 G9 J3 I2 d( p/ V& t0 V/ elet sum-money 0
  e2 A/ f0 b% a- S: rwhile[ i < people]
" L6 U; m1 o% ~$ O# T[
# k6 Q6 ]* S: @& bif( length (item i
1 n9 ]$ Q4 c1 l1 ~8 O' y9 a[trade-record-all] of customer) > 3 )

; [1 l+ `' b2 g4 ~  U[0 i& d7 X9 T" }& S. i+ q1 ]
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))' X5 z% h" I, h4 S
]8 Y$ C! @" |! f7 t: b
]6 H( r% x7 p' e& F+ S0 K% |4 ~- i
let j 0' X7 \/ V9 J- j% [6 C
let note 0
  e! A0 X" o# n# @% [0 r6 u% w! nwhile[ j < people]' T- L. ?- E5 n( [8 b
[1 ]6 k8 s6 x# A4 @% \1 e' f
if( length (item i5 ]4 {+ O- O- p" K7 y, `
[trade-record-all] of customer) > 3 )
# @3 t+ y$ p( l. ]8 Y% z+ b
[! t# E+ D. M* @  C8 K
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)3 R  D: ?+ t5 O7 t
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
# x% m6 g$ X4 V/ @/ F; N* q[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
3 T# F1 p+ }7 w: @9 _* c% i; N]# m  B9 ~0 }2 g5 _3 ~
]& @1 T) ~9 }8 D# Z* d. B" K& T
set global-proportion note1 b# t4 O: g( Q% x: M
]
7 [+ i. G4 _* h3 `  oend
1 m, n* I) h) p4 U) Y. T6 C
* j+ o' P' }. J/ a& [to do-trade/ _& \* {0 f5 ~; n9 m& F9 ~* k
;;
这个过程实际上是给双方作出评价的过程
; y/ _, k0 x2 oset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
3 ~' Y" k* M) k" Y& yset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
. _- E# L; ?0 mset trade-record-current lput(timer) trade-record-current
8 c) H/ k7 b6 ]/ y7 z6 g;;
评价时间( `$ A  _9 l% ^7 _/ [  K3 E
ask myself [
' o8 g8 L% t! ]$ O+ K7 _- eupdate-local-reputation" [# D0 N! `6 X+ `: w
set trade-record-current lput([local-reputation] of myself) trade-record-current6 p; {9 u2 S9 C% b9 a; X
]" ~% |; U1 s6 P* k4 Q. `
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself) s2 R% S: T4 Y0 Q; U3 R
;;
将此次交易的记录加入到trade-record-one
# U8 {0 T. X; x' c- j4 Yset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
/ X7 D2 p; |; K6 h+ [% [( Y* glet note (item 2 trade-record-current )
' ^, u$ {8 e$ R7 ]2 @set trade-record-current
) {* v+ N& S; S) t( L9 N& S(replace-item 2 trade-record-current (item 3 trade-record-current))
  z0 Q6 t1 ]3 S/ W- ^2 n' i7 q; v- F
set trade-record-current
2 G) T9 n# Q, K/ q3 G& n(replace-item 3 trade-record-current note)! R; ]7 \" \0 a8 z" l+ v
: f0 \! k2 Z! d/ C$ y7 K) ~
$ [" i2 n+ J$ ?& N; r) L. i
ask customer [
- V# N4 k6 e5 Y6 Aupdate-local-reputation
9 s. ^0 Q5 V  A- s9 mset trade-record-current
1 F9 ^3 k) y' K" G/ L(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

* x1 G/ k' _; K; y( w6 H- r]; y! r  R3 O- {3 }
: ~5 G3 Q& ^1 g7 _$ }' i) V# Q7 q

  L9 ?- k- X' K1 \& c% Rset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer" R8 E7 U* t, ^- n1 ~
" j5 ?- J* \1 i2 F2 C" w" J) `! f7 G
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))+ F, x# `; F7 s; g
;;
将此次交易的记录加入到customertrade-record-all
. ]! Y* T: O. [+ P8 t& qend2 ]1 n9 `, R( X' {+ _

7 j( H: _7 N! q/ ato update-local-reputation
: v- @7 V& k" r) _: O5 I+ X2 uset [trade-record-one-len] of myself length [trade-record-one] of myself8 s5 d3 w. Q4 Z3 w; ^

, ~1 `' [. j) O+ o0 Q7 m' p+ _
! H9 B( }0 G( D+ E( {0 G$ a;;if [trade-record-one-len] of myself > 3
& M  R+ z. H1 ~$ f4 e
update-neighbor-total1 \; S0 m$ D; B1 Z' g3 {4 i2 f
;;
更新邻居节点的数目,在此进行
* \& d9 ~/ k( j' @- Y; J9 Rlet i 3
6 N( b8 K$ }1 |  ?, S: I* jlet sum-time 0
0 H6 K( Z$ _- v$ V& Q% Hwhile[i < [trade-record-one-len] of myself]
2 ^4 k% c. x4 R/ v" z; G5 C[
/ G1 i; P: ]: x) s1 |3 }. `3 R7 R* y! bset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
6 |, e0 [. d  hset i% L; [3 ?$ c) D( d. ~8 d7 D! o
( i + 1)
$ U* m9 L; Y4 F7 _* t
]1 F1 @  g% B* {6 J' X8 f! z
let j 39 Y4 I4 F- w7 v
let sum-money 0
- Q. E5 U; t! \. x! Awhile[j < [trade-record-one-len] of myself]) I6 F* }; [# u- S
[
" ?: @2 I2 q! I$ [) G$ qset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
4 q& |# f: h& X( _, U( r6 r6 Qset j
  R" o# W7 J$ k. @( j + 1)
$ h2 N: C  ^$ M4 B% U8 k, g
]
! P2 u0 c" P% n! ?let k 3: G* ^9 ^2 S9 S$ D) a- ~
let power 04 O  f$ g" _+ m8 _/ H5 r- u. P  V3 |
let local 0
+ k! B. j, G) K8 y6 _while [k <[trade-record-one-len] of myself]
. L; R: v7 N, G: P[6 q( n/ ?+ r1 N2 J( t) L8 C
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)
1 D7 V, a- b) B# Z% B! Uset k (k + 1)
! g7 H  T' G9 R. H  l]% W* h9 j. E# C8 N# O$ i5 P) [5 @5 q7 Z
set [local-reputation] of myself (local)
* s, D* B' [3 zend! I: p& s2 e( \$ g* L
- r3 ]& r8 S6 d
to update-neighbor-total
* a# @2 V  E7 q: ~0 d6 S) t8 e. j/ s  s' U" _% V
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
( `9 E: {+ Q7 T+ k; b4 W- u8 _+ x. P: c0 s. l2 n. l+ Y

$ T6 l" |' i! y# rend2 i0 E- W1 ~7 i8 c7 d+ @& Z) K& Y8 ?
" W+ y) `4 \/ q: F: }% g
to update-credibility-ijl & l# e% u) d6 W
9 q4 H) ~" l! q7 v7 ~( l6 [
;;
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。
6 z% {# K+ l  ]+ G6 z! p" Xlet l 04 Y: |* C9 T+ n3 x+ L
while[ l < people ]
+ z0 {2 F2 n# B6 q5 _7 h, X9 f;;
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* D0 X2 _5 j) Q0 @" S- u8 A* i
[6 B( k  k, k8 H9 o( w  A+ `
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
) c) p+ \+ Z' F4 E. dif (trade-record-one-j-l-len > 3)0 T  t/ v7 d6 v7 ]( [$ W/ M
[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
) V6 v8 M4 |1 Y- V1 Z5 w8 l1 vlet i 3
5 Q. s6 \7 v0 o5 i$ Clet sum-time 0, V! i: ~8 \  Y  C' K
while[i < trade-record-one-len]
  ]1 u/ n6 z; Y[: A3 i- M  [6 h: k9 V
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
6 _! E8 J1 Q. M! Y3 \+ nset i4 c# f, w0 A6 G6 H8 k2 }' s
( i + 1)
% w5 d/ n3 [5 g0 B) }3 t
]1 Z/ b" e/ p7 E  r3 M+ f+ ?) |. n
let credibility-i-j-l 01 e9 W7 L% Z) Q7 N8 V' d: A7 Y
;;i
评价(jjl的评价)
+ c0 k( L5 K; N9 d, K7 t6 ylet j 32 T( v, t1 H' v3 T- J, w
let k 46 \; }; q9 t9 c+ n
while[j < trade-record-one-len]
# r$ ~3 V1 {5 B7 W[
  J, S! J5 w+ K1 y( \# Q# W/ }) H; p$ mwhile [((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
) h2 F: i% K2 R8 z7 {% N: Uset 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)
+ \9 e! f" ?8 Z6 ~7 Qset j
7 T" I% H4 P, G+ L+ V8 }$ v( j + 1)
% [' {. F- Y: L0 r
]5 [9 S; z! ]. X! ^
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 ))3 n; [/ t6 I3 E$ D6 n. }

6 |1 I% o  l% z0 C2 z. e5 V( _% E

1 D, x: y6 |1 ~1 N" E9 F9 \let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))" |9 K8 N1 g# `6 ^
;;
及时更新il的评价质量的评价' W% Y# I+ a' d- U) T8 L+ p4 _) x
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]. F2 B  s( p1 T% E9 w( O
set l (l + 1): q9 F+ {8 |; ~0 B
]/ `7 T* P8 g7 y# V" q
end5 j9 i3 B- m+ p+ v

0 D$ g; H5 M6 T- Wto update-credibility-list* M: Y0 ~! x# o# Y
let i 0
0 ?( ?, F! c: k3 v/ nwhile[i < people]
! @! _0 d; }0 i[
  H# L. i4 S" e. w% tlet j 0
0 r+ k# j7 u. H, Flet note 0' J% @3 H* w' L
let k 0$ {" q* A6 _: O* p# K
;;
计作出过评价的邻居节点的数目! j4 m# j  N$ X, c" ^  N
while[j < people]
8 E* q0 G- ]2 V[
( m  q8 h$ E) ?. |- N" Bif (item j( [credibility] of turtle (i + 1)) != -1)
) d3 a. R) @/ }9 u* t. L3 ^8 ]1 a;;
判断是否给本turtle的评价质量做出过评价的节点9 P2 _* p% F  y/ g+ v3 |
[set note (note + item j ([credibility]of turtle (i + 1)))3 T8 x$ X- W5 F: h
;;*(exp (-(people - 2)))/(people - 2))]

" J3 l3 l7 Y6 aset k (k + 1)5 {" A/ S' ]) j! q
]* ]$ ?- O2 j! m! M! M) s) ]
set j (j + 1)
, L* V- c/ U% [# R" O]7 D2 L4 ], ]1 ^0 k4 j
set note (note *(exp (- (1 / k)))/ k); s: h1 Z6 }- }3 c5 k9 K
set credibility-list (replace-item i credibility-list note)
5 y" [+ e8 X, r' i7 p$ |set i (i + 1)$ f0 K" Q2 b6 t3 v% a! k
]
0 O/ M. M( `# Y6 G5 A4 Q  V) Hend) o& R2 D0 i- ~) Z, Z
3 d* u2 D0 J( \5 z6 K
to update-global-reputation-list
/ G+ W) t6 y* ~# l2 I! T/ U3 Xlet j 0- Z. a2 \: k. I$ y3 F( y2 L
while[j < people]
) c. I; ?' @& c& K* `[5 \& s4 x2 ?5 }" H  l
let new 03 w0 m) d# f$ k# g3 j
;;
暂存新的一个全局声誉4 }% J  ]" F! W$ K% I, N. P+ Z( p" ?$ }
let i 0
, u$ Z) k: x7 B- V7 x4 Plet sum-money 0
  O0 N& E. n- l- ?& C* F  Glet credibility-money 0
$ T% B. g% B; Xwhile [i < people]
/ R  ~: b& c4 R( X[3 w. S1 F8 }; ~% U1 H- `- b( o
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
7 ?. \$ p4 @. n; ?; [8 [$ @% m+ dset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
$ s8 n2 k  {9 h0 T- Zset i (i + 1)) v1 r5 \. t8 X
]
5 w  u, d( S# c4 \; Z0 v. I6 @let k 0
1 Q9 g/ B# f5 Y1 s! Z9 j) klet new1 0
0 i. i3 a' }' }) O0 qwhile [k < people]
9 |& S8 W4 j2 J7 V; A$ `[7 j: u3 h0 e. s) e0 U+ \- D. 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)
. E/ o5 v, s/ ]3 V7 y( Q1 w" a4 ^set k (k + 1)  T% t5 ^3 ^% k( P
]. ?1 R+ v4 R1 w$ }/ ]% l3 o
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ) J7 E  f  H1 j
set global-reputation-list (replace-item j global-reputation-list new); b0 I7 s  {; Q! E" _7 o
set j (j + 1)! [8 o/ X+ {& i' P$ `% J9 v
]
2 b% m5 L# P" D* S; y/ send, Y# x2 C( c% I/ g" _9 B! O

8 [9 j0 ~  w  b7 f7 z' c: S2 I3 }7 j8 G' f( X5 m
0 z8 O2 r* i" g
to get-color
; T; l# A2 L  w4 v: Y! n- O9 }( E- |- B
set color blue

5 U6 s8 h5 X9 o6 L! L  [( i: dend7 t9 b7 g& ?8 H  ^! _; Z7 C" w% j# _

( ~  n& ^/ D6 V8 T' u+ C; Dto poll-class* C1 v8 u& T" Y( ~- b# S
end
2 L; }$ B+ }  g  n3 C$ K
' ~- P/ J) W  t% W/ Q' {1 H5 tto setup-plot17 ?0 k6 h5 T6 ]" ]5 ?1 e' x

  s1 Q$ A) G3 G& [3 T8 qset-current-plot "Trends-of-Local-reputation"

/ H- a+ q+ N) t& W! s5 w3 j0 l0 n' o
set-plot-x-range 0 xmax
/ Z* G4 u. ~/ u
, G2 o0 x2 e& x1 h  `
set-plot-y-range 0.0 ymax

  j2 M, ^0 u/ t! Wend' L8 }) U! N( o7 @  Z

4 h  K' n4 h; l5 K  qto setup-plot2& f6 m* W, Q1 a7 F, n

4 C" V, |; n4 h- R9 kset-current-plot "Trends-of-global-reputation"
& I4 P- z6 B% `$ H) H8 C- {' W! A9 F

: X( c6 Z/ L' l4 ~' Q. J1 Iset-plot-x-range 0 xmax
% M3 O. v5 A2 t% T7 G* Q! v

$ N+ J! n/ F& s. f0 G6 \1 hset-plot-y-range 0.0 ymax

, q8 B) Q2 H( F2 i( Gend
0 ~$ |1 L. X' Y. B2 m$ t
7 {" b) ?/ n4 e# s& lto setup-plot34 r+ d* Y1 ^# l* J0 J

# U, R0 A$ s( f: cset-current-plot "Trends-of-credibility"

7 G1 \$ I% z" l! }' ?
# g& n9 r* p+ pset-plot-x-range 0 xmax
3 \4 U: O& T0 k, Z2 R
+ I; N5 A1 t/ u* m+ q
set-plot-y-range 0.0 ymax
+ V  d5 m! u9 E4 s  t4 N- J
end2 t4 R, e/ B2 H$ ^

; F; X% ^- I8 k, ~5 ~/ b. Mto do-plots7 Y: x* K& ^( q: F
set-current-plot "Trends-of-Local-reputation"& y2 F4 v: Q  n
set-current-plot-pen "Honest service". g2 a3 I: l" m+ l3 V
end
7 W- e2 B4 s. T2 }; _: {% s2 i
2 X' y3 \# L$ G5 w9 J, G[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

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发表于 2008-3-19 11:33:07 | 显示全部楼层

有点困难

没想到挺复杂的,我去问问师兄们,不知道你是自己建构的模型还是其它模型的改进,我试了一下好像setup都有问题,别着急啊,呵呵 。
发表于 2008-3-19 11:34:29 | 显示全部楼层

还有啊

发表于 2008-3-19 11:35:59 | 显示全部楼层

还有啊

能不能传nlogo附件上来,一个一个敲太累了,好长的程序啊。
 楼主| 发表于 2008-3-19 12:47:57 | 显示全部楼层
嘻嘻,不好意思啊,现在把附件加上了.% o- \$ a) r2 w# L" @

! x3 V% N3 C7 o) g) Z, t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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