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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:& ~/ d* X7 Z- \, C- t  ~
to do-business
4 ]3 l  e& g( T% `- D5 z2 F4 @$ o rt random 3605 ?+ ~7 `* {1 L+ d( D9 W
fd 1
- `- y+ e, u# t: Y( U% a5 h2 Z' w ifelse(other turtles-here != nobody)[8 G8 |6 b; |; [# B4 m
   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.
8 P# D# x  h: q6 o5 z, ?; }9 H   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ( N6 z& y; e8 p7 i
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
6 e7 D; o$ G9 O   set [trade-record-one-len] of self length [trade-record-one] of self9 R0 s' z4 I) A0 z4 O$ d
   set trade-record-current( list (timer) (random money-upper-limit))) l# T$ Y" ]  G( h/ S; [) L

/ i( h" b" Y+ x! P# t! W  G问题的提示如下:3 v1 Y1 S4 i7 T  c# m+ L' \

9 `/ F0 m# ]: {: X: a* [; T3 C$ derror while turtle 50 running OF in procedure DO-BUSINESS  i1 A- I% G/ z: n
  called by procedure GO
, e( F/ [2 O/ mOF expected input to be a turtle agentset or turtle but got NOBODY instead.
- P) U# o3 d  O! L
(halted running of go)
( }6 l* ?5 B: x' ?- M
- v# g( u' z2 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~~9 n* c/ h5 W2 l$ y) m7 ^* m
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$ Z! h6 q) m5 W8 Wglobals[9 p) ~/ W: m/ _$ S( |" A  c9 E
xmax
+ s2 E: G, }. I/ Vymax7 p* |+ N& a& |2 x
global-reputation-list
# Y$ U) T" R5 \( O. \- |# f8 ^+ d
+ p0 m0 T0 S: {7 I! h0 V2 b;;
每一个turtle的全局声誉都存在此LIST
% `2 ]# E6 m9 d  P# y" ucredibility-list
& K. R+ s5 _1 _4 X  Q4 ~) s;;
每一个turtle的评价可信度
9 O0 u$ W+ u( G8 S" [0 v2 v2 o! b; Ehonest-service
, h8 p6 n- _& m1 H+ h, aunhonest-service# @& Y+ v4 p% W- p, M! d6 k
oscillation, |- L+ v# D- {' H' [3 D# ?
rand-dynamic
8 i7 Z9 V/ t4 W  S]5 Y' O3 Y2 J; `# E4 m
9 q# i. ~8 C8 v8 y. h
turtles-own[
% c' F% k$ \+ m- j2 wtrade-record-all
5 S" P6 a& v" w' s/ S4 w$ Q;;a list of lists,
trade-record-one组成! S7 P+ @8 Z3 v7 A
trade-record-one
$ k: D( c$ b' ?0 Y* m6 o;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
  W0 P. L+ s2 m5 L0 P; c4 {9 q; n9 U3 S6 d7 L5 `
;;[
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]]9 o4 ^9 L: A" }9 Q, 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]5 n6 @  k9 l* z( {2 Z
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list4 g! z0 u+ |- w
neighbor-total
! t) `8 u9 }  s' m;;
记录该turtle的邻居节点的数目" {' q0 T, s3 J4 u: R1 s: [
trade-time2 B: C: ?; B2 F; t
;;
当前发生交易的turtle的交易时间" m/ d" r- q4 F& _5 E1 g* U
appraise-give
" S6 L; d5 Y2 t1 x$ m; H;;
当前发生交易时给出的评价! |) s5 ?! z* l* i$ |2 i: R8 s' v
appraise-receive" `) X$ N: R/ N1 h
;;
当前发生交易时收到的评价
& c: R( L7 E/ ]* H( R/ tappraise-time! L! u) o9 |, v0 Y5 ]
;;
当前发生交易时的评价时间' g7 t2 c9 e: M: w
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
* _/ D1 s5 b2 g! C+ k+ t# }' k& B0 }& Qtrade-times-total4 R( O. ?* ]9 P3 N" E  p
;;
与当前turtle的交易总次数
$ y6 k+ B3 z+ G. T- qtrade-money-total
6 t: F; ?, i0 G: H7 U& b: ?% G;;
与当前turtle的交易总金额
& B1 a3 m' ~' n5 |6 ~- }/ xlocal-reputation6 }" G" Q$ W1 r2 A4 X% T& x
global-reputation
! t! ^$ ]5 E$ ?: t: Ycredibility
( x1 ]' L# t3 b;;
评价可信度,每次交易后都需要更新! D( g1 V$ o; X8 R% \% a
credibility-all
9 C# R% p/ b( m! p( ]9 U;;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  K" J1 x, [3 j+ h5 ?: V
" s' F) T  z( Y: o0 N0 D
;;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& H7 g" t# Y3 c- d  V- }
credibility-one# v% P. W' O0 y. q) m0 {
;;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' r; `* g+ W, z) c
global-proportion
2 b) f* x" j! J& r" Rcustomer. a! k- E/ N! y$ v! {, y, O
customer-no
  I0 G: B- c% G- [trust-ok6 F! @% X" U& x' x0 Q7 J! \' c8 N& y
trade-record-one-len;;trade-record-one的长度
! y6 h; {2 ?0 {]" \5 D: h9 i  v& k
* ?' w$ a9 u; ]3 j
;;setup procedure
( }! ~: N" E! G* D5 O3 z, |
( @( M8 }. w" L1 x/ r% t$ eto setup
$ ?# U& ?7 F# n; Q& }
) \5 X2 L% J' p# yca
2 N* l! m5 ^! z: q1 b! K
( ^7 n' I& A; v) t+ j6 F! G
initialize-settings

6 w3 T7 x5 d  r" u9 |* p7 M$ e, `, s& w# ^( J: [
crt people [setup-turtles]
# L- m  s* b- r9 J5 r- E

% y1 {" r) C0 u$ @" Xreset-timer

3 I' z0 l8 Q  U+ T1 ]+ p$ E( M
0 j7 Y1 I# J) Q, X5 ]- J6 lpoll-class
3 D; O3 k  j; N4 s6 y

3 ~: \# C; O( Q& Hsetup-plots
2 J  G1 W9 A' v6 l  B+ }4 d

: Y& q" m% S6 i" }0 q/ Ydo-plots

! f: A+ I  s: E& g3 E- O- a' S$ Dend
. v4 k+ h# ]/ ^$ r( }# O$ s. G4 E3 |/ U5 P
to initialize-settings
& W+ v( O; ^$ E7 A# X0 [
) [7 n" r( L! U; |3 Qset global-reputation-list []
5 @1 f- A7 v" M; E& T% U  O; m
! b: D  o; |- X7 E8 |# {6 H+ e
set credibility-list n-values people [0.5]
% v* u) Z$ k2 A
7 J1 {/ G1 B5 g) d2 Z6 R
set honest-service 0
2 O& _4 {% ^$ \% I. R8 P" H! ]

' h# D8 d; ~- s% @0 rset unhonest-service 0

: X6 v# K! B* Z* P& R5 w
0 a$ U* m% ~' w. L0 V& Q4 Wset oscillation 0
9 s, O. w; u) \% C

6 A9 r' H$ }) g/ Pset rand-dynamic 0
. K7 `1 g; M# h
end6 `9 i+ R! G. K1 O& G
8 q* s2 e. t1 |: g1 \' j3 ]
to setup-turtles   S1 b4 A' i' }9 }
set shape "person"1 f5 C/ T3 Q+ c/ Z1 d# r
setxy random-xcor random-ycor
" }5 W. `2 Q8 x/ U# wset trade-record-one []4 Y9 L- |+ U5 Q. \" N% a) f3 ~+ [
1 T: E. q0 o, Z/ l
set trade-record-all n-values people [(list (? + 1) 0 0)] ) V8 `* m- F' b$ h8 H

+ O0 D0 y9 o8 fset trade-record-current []
) Q8 D3 b2 m: K) _/ f$ Y; gset credibility-receive []
7 f! i& S% c4 s* X# Kset local-reputation 0.5* w9 m4 Y3 T& q: H: w
set neighbor-total 08 W  {; A, k1 w- k$ M& H( h
set trade-times-total 02 ~% Y- q3 p5 {6 h4 h8 H3 O
set trade-money-total 0; }) L/ u0 \& J0 ^& t/ ]: Y
set customer nobody
, ?& W, I( S  N2 o" Qset credibility-all n-values people [creat-credibility]
9 o6 }  i! S$ s# t7 {set credibility n-values people [-1]
& ^+ X, j  o- ^get-color, A% ^. o5 f3 l7 F' y! A4 s  @# M
( z6 C* t6 ~1 {0 s
end- T) [8 r7 W1 j5 v
2 R% X& G0 l, E5 a
to-report creat-credibility
+ f+ ?1 j$ L" z1 y% a' x5 Mreport n-values people [0.5]5 o8 \9 {7 \1 n, Y
end
2 {4 e6 U0 }" K  V* K8 B1 g3 b/ M# A! E% n1 u' L2 G: d
to setup-plots1 F* ~9 u: G* s: Q
+ `5 c) Y! k$ g7 o' ]! x- {$ z
set xmax 30

; e( b6 l) Q" r; p6 ^0 H& G# A! I6 ^3 B& F
set ymax 1.0
4 ~6 E, E. t+ Z% ~+ i
! D  I) |3 l+ _7 M/ l
clear-all-plots

; J# y& n# U( ?4 ]$ G
5 A( ]1 a/ r0 J9 p  Q* t0 p- Nsetup-plot1

. |0 w; Q( ~5 X' j; y
; l7 c% I: B( x* r  C9 v/ \5 dsetup-plot2
) V. _( f2 o, b3 ]/ o6 d2 W/ P
4 S& @9 ^' C) ?4 L. t
setup-plot3
7 I- c6 ?0 D, K  Y: c
end
  T7 T6 A* K6 ^, J, W) k. A  V  D
4 m. i3 w" E& s, ]& n;;run time procedures
4 X  M+ X& S) l8 W/ ~( P5 E
% f( j% l% u* q) V* Lto go8 L2 Z- V% q4 q! q0 E
; K6 \2 X! k, N% H% o
ask turtles [do-business]
7 {2 [, P) X, S' {+ Z8 v' ~
end4 Q3 p( E* ?' n+ E  b6 U2 i. V
  J' Z+ U# {4 L, e) B  s$ n$ H# s
to do-business
) y' R, J) L& {! g+ v2 z

7 n% p  y. f7 @% G: f4 b0 v1 F' t
rt random 360
1 m+ K1 g0 V, T
! P" A' d- U* H* W  z" T. L0 p& W4 _
fd 1

, k  W" Y3 J* `1 _1 m# u; k" X+ a& M2 V# F  E
ifelse(other turtles-here != nobody)[

) N8 Z  m9 ^9 ?: |& H! K: [; B& m7 T$ w/ `% K- U! Y
set customer one-of other turtles-here
9 C2 L. y- {' S
' f8 d, X) Y9 ?9 B5 P- Y
;; set [customer] of customer myself
+ e( M; h; x4 J8 K/ ~( ~
# `6 ]  |% N+ g/ [+ Y6 g
set [trade-record-one] of self item (([who] of customer) - 1)' m( T; n% w+ E5 C
[trade-record-all]of self4 b0 {/ e: ^3 T. r
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
# L5 \1 [: R! n
6 V( c: K, J! ]3 k$ s
set [trade-record-one] of customer item (([who] of self) - 1)
% K  h9 J7 H4 q: Q5 B# }1 ~) B- T7 L0 Q3 L[trade-record-all]of customer
; g- O" K( H7 c+ a. \8 G

5 Y: L& h7 ?! W: a, g8 r6 O! _  b" Mset [trade-record-one-len] of self length [trade-record-one] of self

! I" ~! i) ?% L6 p* G- f5 D( H+ G. y  O" B' j- I6 j' [
set trade-record-current( list (timer) (random money-upper-limit))
( ~' h' i0 ]' o" [4 \9 ^# L
8 t. h( Q' U3 _3 ]4 w
ask self [do-trust]. q2 D! c# U7 d, T+ O# k1 I
;;
先求ij的信任度
, }0 k( D  C/ d& k5 w7 S9 F* _8 I  c# m2 X
if ([trust-ok] of self)
/ W' c7 c9 c( ?: M# F( T;;
根据ij的信任度来决定是否与j进行交易[3 X0 a  s  @; l/ D/ u
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
0 V7 g  _# e) H; S# s
# n1 e' g: h- m6 G[

( @! g. \7 ^, Q; x6 I6 n+ Y  N
) b3 \! a' Q" k! O& rdo-trade

# L* n5 W  ?! m9 s
! N& W( ?* }9 C6 Z. [9 Zupdate-credibility-ijl

' B4 m+ O: u* K. d1 v+ h' J4 l* g2 k6 [% x( z
update-credibility-list
6 e% k7 `. }/ f6 C- T1 d
6 N8 h- j7 W. Z# E3 ^

3 `& A4 n2 s6 u! K) m0 bupdate-global-reputation-list

" u6 O, c/ ~5 \
6 _  v0 M# x0 `% @  u9 }. F" Wpoll-class

% J. p) K: ^1 s( L8 I9 [1 ^5 R: N$ v( B; @) t0 V' r: A
get-color
& D. |& i: w* h

( t  n' A3 e' P& o4 u, H]]
/ S+ V0 ^2 ?% m  d$ M! [% r9 @( ]2 c% Y) e# i% G5 e
;;
如果所得的信任度满足条件,则进行交易
* y* C" u' D2 Q
, y9 g- l# D4 b, r[
, W" i& D( W' [
! _/ [  Q) i" R7 c5 d0 J
rt random 360

4 l1 |1 e$ u$ O: x3 S! }) t5 ]( f) k
fd 1

8 @1 z, x6 H, p& r6 g, P- @. H  y* y6 Z8 q7 w) I; }7 r
]
9 I* g- G) @% f  M+ {# J9 S$ \

* P7 @* @9 J7 |# g1 h3 |end
7 v; |8 N- h8 n0 K4 u. T

8 Y4 h. O' q! m& X! I7 x2 b4 p5 Ito do-trust
7 a0 ^* v7 ]6 d) a$ e$ Dset trust-ok False
. n( R; W5 Z: A5 ^/ W
% B: M$ N: L6 e
8 o: ^3 z) H# d. R4 E8 t
let max-trade-times 08 R- v: N5 I8 g- g- N
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]. y; M. ?6 n7 }
let max-trade-money 0
- u$ J* Q) ^+ A9 i4 D, f: W- ]foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
" |& l. L. O3 y  G. `let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
6 @: Y: x7 [3 `% I" Y& D! c! y! {& `
  q$ m8 ~* j* @
2 m2 r8 h3 }7 @
get-global-proportion" D  M5 v* I$ \8 ], f1 D1 k
let trust-value
5 E3 o  i2 _, j" S1 glocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
+ d. M5 Z7 \' O; m$ W" P' m6 j
if(trust-value > trade-trust-value)
4 a2 r& U0 C& V6 |1 l+ C5 k[set trust-ok true]( @7 p2 Y1 a$ V7 D* U6 X
end& N& [  n2 E$ a

5 O5 y. E* X. K4 ]" Ito get-global-proportion
% N5 T/ E( X) Z1 E# P6 ^ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
; m- U8 Q2 Y0 X# L) @[set global-proportion 0]
* D5 v4 i. u. J4 c[let i 04 y4 `  X. x8 E0 {$ ]/ `$ D9 B
let sum-money 0
- Z" P% Z# A" }# ^while[ i < people]1 k4 u" a' B% [7 y
[
4 [% a6 ]' t; Y0 @& g/ vif( length (item i
5 ?5 b7 s9 {$ N2 H5 `* t[trade-record-all] of customer) > 3 )

4 v! Y& ]* Z+ B) I9 \[; p2 o# D0 i, r8 [6 e0 [( B
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
# s% {) `9 u' g]) j9 J! e8 e' V; v, K9 v
]1 C9 w- h/ i* H5 L. Z2 `4 i0 i5 y& p
let j 0: E* n  k/ `* L6 q0 p% _
let note 0
# ~1 P5 {3 @. ]2 N; Z& e/ vwhile[ j < people]+ o& }) K1 t. P: R8 R) q
[) H2 Y. D# i* }3 \- B
if( length (item i* A% M) R8 T, P( f
[trade-record-all] of customer) > 3 )
2 |, Z/ }4 J% `. q
[- B& J9 @9 B% R
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)) I- w/ ~: ^2 g
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
3 _8 p. e$ `0 `0 N( @* e[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]1 K% a1 R; W0 o& Q2 M( \
]. Q+ d; s+ p7 o6 n4 X
]
0 H' M+ X7 i5 b% T& p8 Iset global-proportion note6 @/ ]+ f. J/ z5 Y5 J- x* N
]
) n$ B" t3 |3 |5 i$ M& x2 @end1 O% ?! D* m$ o6 q* H9 Z
0 g, q0 t* q3 Q
to do-trade; [3 r- F1 L. H; Y' b: s; v
;;
这个过程实际上是给双方作出评价的过程
9 t# R' {1 n/ q4 T( Q/ aset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
/ S$ i. N* Z, k$ o7 ~set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价! c1 H7 }) w3 c% [
set trade-record-current lput(timer) trade-record-current+ v, u3 `# m# l4 w# k" @
;;
评价时间1 e# `/ N- h$ ^: l
ask myself [
8 J. d$ y( e- W5 vupdate-local-reputation6 O1 }) X) U' N+ v  H
set trade-record-current lput([local-reputation] of myself) trade-record-current: Z! d+ g3 [/ @/ g5 l' L, M' L
]' [/ M7 L! p+ }
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
1 g6 d% _2 c: p0 w& e;;
将此次交易的记录加入到trade-record-one+ q- ^8 D  X  w
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
9 [+ P5 W$ o3 r, A) n% Z; ylet note (item 2 trade-record-current )
' \$ J! W) l: _0 cset trade-record-current+ W8 t' h+ V% c2 |  ?
(replace-item 2 trade-record-current (item 3 trade-record-current))
# Q- W  A5 y3 r* T
set trade-record-current
0 ]1 k& ?9 ~$ C7 D0 Z8 g; x- c(replace-item 3 trade-record-current note)7 X0 Q3 f+ \3 }6 h& v! D, ]% J/ [
! U0 P& B7 l. a' f; P2 j9 N1 m

4 e/ r% |, ]4 M# w& H" w/ Yask customer [
& R7 y3 ]; k3 r4 n& N/ h- Mupdate-local-reputation5 b" p2 l. K4 n9 Y: U
set trade-record-current
! H/ Q& V8 u  a" Q+ f(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
2 }6 N* `! V" R) `5 V$ Y
]
/ U( \9 _8 M# Q" j* l/ b' l& z/ B5 G; M3 J* D3 {$ ^* V5 e& C1 `

# @* Y3 k# v: X' Gset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
. T# q" M" V4 j& W" G. E

0 p8 q' B7 a3 l, E. qset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer)); D7 m* O  _5 Q# b; f$ O( B9 Y
;;
将此次交易的记录加入到customertrade-record-all
' o3 ~1 n4 D# |! {" ?end. T8 u" i+ i' L% r7 F# i
( ]) K7 ^4 g+ T$ _, E
to update-local-reputation
2 O4 N6 F. g) [9 \set [trade-record-one-len] of myself length [trade-record-one] of myself0 |6 w* Q4 Y/ {" L4 s" H2 E# y
! P& B. H' R- m5 b$ c7 U: g3 ]

- Y$ Q/ w  \! S% C$ r;;if [trade-record-one-len] of myself > 3

% y% r4 }8 P2 N  dupdate-neighbor-total
5 q) b. b$ B* z3 d. r;;
更新邻居节点的数目,在此进行
) N% X5 o' C3 g2 {# }, ~0 Mlet i 3
; r' Q" y* M2 M0 I$ M9 U2 Clet sum-time 0
! f2 x) }8 e2 B4 }( F( y  V" cwhile[i < [trade-record-one-len] of myself]
6 }, H% x1 Y- ?+ X* P9 Z5 m1 e5 ][
$ U0 b4 A: q) x" |& N9 Fset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
1 M1 K9 l! O6 bset i1 T4 n+ I* x. F! K, c& [% S. x
( i + 1)
* ]3 d+ J( I5 x1 R
]4 ^" J( u- F5 L+ N) C  f+ \. t
let j 33 J. f& U0 I( `; [% g: U1 u
let sum-money 0
. Y& ?5 {' r/ ~4 S1 \4 e# Jwhile[j < [trade-record-one-len] of myself]
- P' q; @2 h$ s( ^- Y) j4 H2 _[: t8 i- j6 x/ Y! B% x- }' e1 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)
% I& @# u0 r4 n6 k4 l( @set j; I0 C$ ~, H/ g' d( S
( j + 1)

; a- H" ~' b5 `& \0 s3 ?]
$ T. g0 E, l: L" ulet k 3
5 n8 Q8 g9 t/ u& y$ M' g' h& U& Zlet power 08 m+ P" K0 F' E& V0 e' r; N5 @. b
let local 0
" I# d1 A1 Q( p% V' u1 Kwhile [k <[trade-record-one-len] of myself]/ ?* Q$ S8 s0 p9 y3 l
[
9 D5 k. h+ i. qset 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) 5 G% H3 W" e  s. g- C, L& X  W
set k (k + 1)4 R& g# O2 `( q. z  \$ f
]
3 b3 R8 M7 u; i" e) Vset [local-reputation] of myself (local)  a- Z* ]6 U% R/ S1 b
end
, k2 ?% x* q5 h2 {9 I9 J
- \/ J6 ]* i6 \to update-neighbor-total
2 N2 m  {2 I0 v( t& B: U5 z+ a. p
! l8 M, e5 W  \) Fif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
% U0 l1 A5 [5 ]( n/ d4 c* L  F& A# B- F* }9 C( u
' D: H( P+ O5 g1 c2 V6 o6 e! i
end
) m, P) U* t; _% X5 K, J" _
- F' {% G' w+ Fto update-credibility-ijl 8 b0 U* a# D, R3 n& A
# ~1 A( r, }& o. N. R: Y# {
;;
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。
9 A8 h" U8 p0 H$ t$ B4 plet l 0
6 ]1 R7 q+ n# s- lwhile[ l < people ], ~+ J  A- i6 R
;;
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, i( v( Z) z+ ^
[
: p3 j  }4 o% [4 N' D3 H0 L! Tlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
  o+ m: g! V2 n; ?  Y2 Kif (trade-record-one-j-l-len > 3)% X( K* R8 v6 D7 F! D7 v9 J
[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! n3 `2 }" J! O4 M( c
let i 3
1 L3 r: P3 [" C: D7 d$ i8 O6 Jlet sum-time 0
2 t6 @, s; {; S* Bwhile[i < trade-record-one-len]8 F0 i1 B" O7 {6 w
[0 N3 \, ?6 Q: k& S. w5 y! C# [
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
, K% ~7 |/ y2 I& V% Fset i) H; n5 I/ x9 S, Y) ]# k
( i + 1)

5 g3 |% y& Q. h$ B% W4 f: V0 b( j]5 V& F1 }9 d3 ?$ U. h8 Q! j
let credibility-i-j-l 0
$ g9 V# D* _( e; r;;i
评价(jjl的评价)' V( v  W( L8 S3 B$ X
let j 3& F* U" m2 I- h; j# J4 Q* D
let k 4! @! i0 g# y0 G' G% m
while[j < trade-record-one-len]
3 f, k( S# U! {* c0 B[
7 y$ x- t5 s- D3 X8 W, F6 Nwhile [((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 @  ]9 A# G. V" ?( N0 V+ E
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)2 q3 \5 @! W6 w' C
set j% m* h5 q+ o" v+ G; n
( j + 1)
# z" }# ^% q& R; {* g: T4 F
]: x3 J6 Q3 t$ o
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 ))
: e2 [, x$ T8 T2 o9 T! x" p: E* n4 c. u8 e$ |

# p( S7 }! k' g* v5 i" ^# elet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
+ z3 S! X3 s4 _; [;;
及时更新il的评价质量的评价
3 J- F- q  r( e! _( K' Gset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
- L  D: j/ D  {9 M  ^set l (l + 1)8 L1 G" M$ R: a' j* O! d/ m
]
  n# h0 J, ~# O0 p3 ]* ]4 Lend5 o0 B& }/ J9 `5 _% [0 q( g3 X9 ^
# s5 O7 u" U2 ^* @9 v/ b
to update-credibility-list
/ }5 @- O% ^! V7 L% n( p9 U; T5 B: Alet i 0/ ?" n  f: b% ~- g! f' B( b1 g
while[i < people]9 O! {: z* i$ B/ l' i
[! y8 d5 U" ]5 [4 o+ ~' Z
let j 03 e* U! j/ D: V  m4 o. j7 p' W
let note 0
# T0 I  [( p, I6 b' _let k 0+ c- f) l( S7 T9 Q3 r/ y. c% D
;;
计作出过评价的邻居节点的数目
! \/ \. g  {$ z5 \9 U4 D$ ?0 J. Gwhile[j < people]
3 d; M9 p; |( b3 r/ s[
, I$ m4 T9 b4 sif (item j( [credibility] of turtle (i + 1)) != -1)$ ]( f- j6 _8 c* c4 C
;;
判断是否给本turtle的评价质量做出过评价的节点
. m1 L1 u! a* p# q+ Q[set note (note + item j ([credibility]of turtle (i + 1)))% D2 }% h. o2 o
;;*(exp (-(people - 2)))/(people - 2))]
* {( J' Y2 G, ?  J! V( T
set k (k + 1)1 N  a: o& A% t7 P( i3 v
]& r" ~# q/ \$ V' H4 C
set j (j + 1): C9 H8 s" J+ x
]
) n% b! Y7 C  a$ Fset note (note *(exp (- (1 / k)))/ k)
9 X2 g3 S* W& X* ]+ \0 mset credibility-list (replace-item i credibility-list note)2 ]1 ?* d+ a& y: s
set i (i + 1)7 K( n2 u$ \1 Q
]
( ?2 K$ g2 O3 u) }end4 q2 ]) m8 I' q, s

# |' b# z& r- q( i5 G: R+ Uto update-global-reputation-list
& R% w2 e: f6 `( r. q9 tlet j 0/ X  }6 s. I' G' F6 {
while[j < people]- J9 s8 |5 U$ S+ |' g
[
/ W+ b, t4 b* B& i$ ]  o3 ~& dlet new 05 i, T- F4 d% V* H
;;
暂存新的一个全局声誉; t; g+ o# n: W# B& W( K' {7 i- B1 u' P
let i 0
( T% n6 L1 U$ m: Z9 mlet sum-money 0; m) @/ R  P# ^: m
let credibility-money 09 X, C% Q- A$ H; v! ?) N
while [i < people]8 t* h; R0 n% I% S
[
( X; }' d! ^4 M( A/ ?% [set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))2 {9 f: K' q  |5 B% g+ p4 f
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))3 u4 |9 _4 ^, r& i: @. l) i
set i (i + 1)# j+ w7 S: s- X- v2 D9 z. `" z4 S
]
/ J9 Z3 {: r0 U) E# Xlet k 07 p4 o' }1 A" c0 L2 [) u
let new1 09 x) \# t4 g/ A% g: Y
while [k < people]* E! \6 ~6 u1 T" J  [/ o
[' C1 E, D7 T& P- b& C/ y$ H
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)
* D/ [$ I1 w6 j" ~9 w) bset k (k + 1)) T6 p' P# |. J$ ^: V# |7 R
]1 \3 @- _: P9 r5 Y* O8 Z
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
% L& i  G% D6 l9 E5 @set global-reputation-list (replace-item j global-reputation-list new)
; u' C# _4 R7 V& ~: g/ }set j (j + 1)
* E& o, h9 j; a9 Q9 @) y* Z]
$ D: h# C- F9 q4 Fend( l$ w! {2 Z& i0 E, v3 i

: X% Z* }9 {( e' q' Q4 l( j8 i; |. y! E* O/ H6 C

  W7 r" L$ y  H1 c  J6 y% Zto get-color
2 S+ \5 F: A% U5 U3 @# |3 l5 f
, q' H" F- C$ ~5 w# r7 u: lset color blue
$ y3 y. Y% D, b; T; G5 l' q
end* X  ~3 H+ @1 A7 d, K

3 {1 h! p% ^: z7 Eto poll-class$ P' u7 X$ C1 r$ X6 `- v5 s9 b
end9 l/ v* h2 i4 Y3 a- x% q$ Y8 J& E
2 d1 t0 d+ g! H8 q3 B$ l" ^
to setup-plot18 Z/ n& u% E3 O' `9 z4 Q& d& g
- K; P0 P% p" t( {$ e
set-current-plot "Trends-of-Local-reputation"

, c' s3 G3 ^! G* Y, B: v4 Y& ^" O6 w1 ^' A
set-plot-x-range 0 xmax

0 H4 a2 k/ y* Y* ]( Z. e7 R9 M1 e& t2 v$ c( @7 T  F
set-plot-y-range 0.0 ymax
; f5 C! a7 a! L! u
end
! }2 `3 H# w, R
! @' v4 ^7 c+ y& F; d+ vto setup-plot2
: b. Y+ E' ]2 b" J8 i! D5 [
/ e7 `) Z, _& @1 c. `& |) vset-current-plot "Trends-of-global-reputation"
. T$ ^# a7 _5 B! g; L* A% E

& {+ \, [! o/ L! F6 dset-plot-x-range 0 xmax

2 j+ H& V8 C5 v* g
' R9 ^' m$ C/ a) C* B0 }set-plot-y-range 0.0 ymax
7 {3 t5 R: E% G2 F! c: X1 Q9 D
end
& d3 g, c' Q( ^  `  r( u
  E( {# t/ L! e0 ], J6 J7 r) Eto setup-plot32 g9 h4 T. x3 O- N

4 M" J& }% d/ Q  b; K1 u7 pset-current-plot "Trends-of-credibility"
6 x6 n4 V& I! w1 @# N% o

) g/ D, Y4 U8 ]+ M5 i$ K- kset-plot-x-range 0 xmax

9 O7 Z! r8 Y) U) L, o
6 a: z' g( y1 B6 W$ Jset-plot-y-range 0.0 ymax
. K6 O  W1 a# x; B
end
7 U$ U( C( c. d) k3 G( |+ z
0 B, C& a" Q& |/ |" `5 j" Xto do-plots5 c! G( A- ]# l) P
set-current-plot "Trends-of-Local-reputation"
: k# w8 J- p( o3 k% d/ {set-current-plot-pen "Honest service", z* `7 R( r4 o$ U5 p
end1 Z7 k* b& z/ x; q: P1 D2 a
/ t! v5 Q2 s) E
[ 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.. X3 }4 h8 q3 H

4 v: J( m1 d' W2 M/ A( `( m: a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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