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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:2 x% A8 t- @0 ]6 _
to do-business * f1 G& o# f" ?
rt random 360+ p' M7 b% k5 o/ W" |3 T
fd 1
' P) a8 B, X) j! N4 S: D ifelse(other turtles-here != nobody)[
3 H- M8 X# [- u0 ~; }/ W7 n   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.# ?+ z( D# ~" ^
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    , Z- P# h# _0 \8 |
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer6 M4 h. k, V: V
   set [trade-record-one-len] of self length [trade-record-one] of self) j9 }! N7 z6 {" z1 a+ C
   set trade-record-current( list (timer) (random money-upper-limit))
. w: k5 X) A$ Z, N
. X/ J8 ]& ?& A0 N问题的提示如下:# [) Z7 W& Q3 p- V: x

; ^; v; S2 r  Uerror while turtle 50 running OF in procedure DO-BUSINESS
% e* B( M! y0 B! R  called by procedure GO% N0 k. D' \/ @# d0 Y% f
OF expected input to be a turtle agentset or turtle but got NOBODY instead., z) Q( a1 \( a+ J" v8 {
(halted running of go)
( h; N* j$ u, K, w" N# L9 N9 r" b$ t, ~
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~~
1 }: d4 S, b2 L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
; C/ M% w& `. Q& gglobals[/ G  r, Z$ [  c( Y8 E
xmax: H( x$ ~* Q# j2 u5 W3 V
ymax
0 d, s, S0 ]/ k& e- Q) t9 r6 J6 kglobal-reputation-list5 b+ @3 q5 G3 o7 l% R  n1 |6 H

6 q( s. m0 P) A5 _0 w6 \;;
每一个turtle的全局声誉都存在此LIST6 J# }; H2 G) p8 u' b  `/ a
credibility-list7 Y% m8 M4 D( s8 U" o7 }) Z" Z
;;
每一个turtle的评价可信度- _% v9 E6 W* \$ Q
honest-service
: J! C- i( V2 R. w# Wunhonest-service! l2 ?! @- ~2 {1 [9 y2 j/ G; k
oscillation, l$ P0 I& @8 s* F' ^0 L( F
rand-dynamic
" w/ o) O3 M% _3 c0 f+ n9 P- B]
% _$ B$ Z- h  b* t5 G8 S! d
/ b& y& g# @2 x- ?/ {* t! t( J' ^turtles-own[6 t9 v* z  R  z; T1 C9 p9 A
trade-record-all# t) J/ X. m# S1 w( H
;;a list of lists,
trade-record-one组成
) d+ [7 B6 ?$ L1 Dtrade-record-one
& N" q, n8 k7 K. w9 x3 g7 v;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录- D+ q: i. r% C7 B- k

% M1 z9 u; Z3 ~, t; L2 J- Q. U;;[
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]]; ?, O0 {. w! ~/ U' ~/ e; 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]
, o1 m' _; I% \# v( t) P3 zcredibility-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
8 R# ~( ~2 |) }$ X$ ~( bneighbor-total
1 }7 ]1 v, D* i3 d6 L;;
记录该turtle的邻居节点的数目
% L: @% h$ |8 E( B) h" ]; Ytrade-time
' e8 A1 }: Z9 V) |: {;;
当前发生交易的turtle的交易时间
# b9 [$ [. }* {+ v3 wappraise-give
: J) Y6 R& h( ?5 s! w;;
当前发生交易时给出的评价
0 E/ s! X+ J9 ~appraise-receive
5 o" `) C/ ], t; ?' s0 O: G;;
当前发生交易时收到的评价
4 z2 r. T) g. T4 Vappraise-time
) ~% l& s6 s" i' V;;
当前发生交易时的评价时间& P  M) n+ ~1 k% e
local-reputation-now;;此次交易后相对于对方turtle的局部声誉2 P/ ^0 T! d+ @: t: C
trade-times-total; {5 g  `; y' x4 N* j2 V. t; _
;;
与当前turtle的交易总次数# T3 g$ c+ D6 G# `; d) _8 C( H
trade-money-total6 F; \9 d0 J  G# F% x% R8 @
;;
与当前turtle的交易总金额' e1 C3 x+ l8 q" ?: s; {/ i/ d! |
local-reputation' s5 i$ C$ s3 W" H+ M1 x1 k
global-reputation0 N) _# h4 ?' y$ r9 B5 f. v# V
credibility2 U" ]. R9 v( Q( O- t1 l* S) o
;;
评价可信度,每次交易后都需要更新# }3 ~/ L/ T# B+ z+ v5 W: A
credibility-all
9 e5 X+ y7 R9 Q+ o;;a list of lists,
credibility-one组成。[[1j的评价质量的评价][2j的评价质量的评价]……[ij的评价质量的评价]……],其中一共有people项,根据6 b- H- ?1 d, A0 K. u1 E

+ Z9 n2 H) H7 C7 }" u;;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. ^/ q, o9 ]' d0 n1 `
credibility-one/ R2 v( Q2 R# ~  X4 k8 p
;;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+ T1 ?) H; U: Q" e0 V% _1 h  P
global-proportion, R3 l( y& K! q% w( f
customer
+ W5 a2 _1 h6 z- j7 I# y- M( Acustomer-no
( f% h% U+ h( i5 m; w' @% N6 O7 ftrust-ok
; |2 z- n, w7 utrade-record-one-len;;trade-record-one的长度2 G; U: u' l! u' V2 n, T
]% Z- M! h3 V7 w9 v( h* O3 d5 S- o) ]
& M, ]' v7 d9 d( |$ t
;;setup procedure
/ N, P, u  O+ k! I5 c! b) c9 h0 U8 f5 Q- \
to setup
; J* K5 ]& Z) n7 o$ F* I# E; W1 W1 W' M2 A8 k* K
ca
5 s! p! [. p4 k6 {+ p! \) @1 M
9 f, X2 \& ]$ g# f# R! Q
initialize-settings

% z+ Y1 H0 S# ^* g( j/ u! W2 ^
! A' G# I" Q) C; c6 ]' |! ^% bcrt people [setup-turtles]

% V. F& K) l# O' ~. _- y# K/ c
2 K- u; d, S0 k% \$ f' ]reset-timer

: Q" X- K) {; c% p: W& F! @+ O# @: _& p5 f) W5 M
poll-class
" K7 K8 o8 h( i  G

( @$ J# a7 Q5 D% Esetup-plots
& F; e2 X; R: Z* V5 ^" W

& T% y7 ?0 \3 l! U, O/ fdo-plots

4 O0 ?5 l: ~' @: E+ T4 Lend
# [7 u( p( s" m) d8 m; R* ^" t5 r1 L6 t/ |, L4 @& k; n* u6 A
to initialize-settings
1 }/ T& m, j, g. Z" F; G. u, k. \6 ]0 r# b
set global-reputation-list []

7 {. z- k  }, L, \4 z  `
, B$ R2 O$ P: fset credibility-list n-values people [0.5]

* X4 t2 Y0 U7 @; d! }# w- w9 f4 B
set honest-service 0

- [% ]( |3 ?# E& f
- H9 d6 H6 p4 e  E+ u) Rset unhonest-service 0

8 J% a3 S- [3 U9 F: \) l. n: q
# _0 s( F# }7 G8 w2 m, C9 Q. u$ L* cset oscillation 0
0 F8 s2 A; i! z& J3 z

7 v$ o! \+ r% i* W, U4 |set rand-dynamic 0

3 V9 i7 d( m# ]+ U4 D) F$ `end
- y1 u& r- D  Y
9 w+ \* y$ Y# E4 g, bto setup-turtles 9 }) N3 t' O! e9 ?' n- d
set shape "person"
) R. n, r, h: e* psetxy random-xcor random-ycor; X1 Z' k% q. k
set trade-record-one []: N' s) H2 K: D
' Z2 b/ v# {$ m9 h
set trade-record-all n-values people [(list (? + 1) 0 0)]
; v- ]' }7 J* h

9 V$ e2 Q0 M* Xset trade-record-current []
4 O( F# {4 ~: e0 w+ X- oset credibility-receive []2 ~3 }2 b% D# x0 ?6 U
set local-reputation 0.5
/ P. g! d3 [: e; tset neighbor-total 0
9 ]4 ]% @$ L& d9 o" A1 hset trade-times-total 08 T0 ~; W1 J8 G/ k+ W! Y
set trade-money-total 0: {: v- c. N# i
set customer nobody
' s3 K: |+ g, C$ h- W' B3 s0 Lset credibility-all n-values people [creat-credibility]1 o$ _# s  z% P8 o
set credibility n-values people [-1]
/ Z- |3 l! e8 \# |$ k; T. ^$ lget-color
- ?4 U6 o6 @  e. ^4 O+ R
0 j0 T4 @. K' R% U$ t
end9 A( [" h, l) a& c$ o3 |: g! ~
8 B2 L6 r# x" F
to-report creat-credibility- l1 b$ Y& L  f+ F0 O
report n-values people [0.5]
2 k0 o& E8 W* l7 V. d+ C1 zend
' u8 t& d4 ^1 w# _2 g+ c
( u4 M2 ^$ W7 O3 P0 R! F# s2 a, hto setup-plots2 ?1 n; L, w3 m

! I1 j1 r& V, p3 qset xmax 30

. v# s& c" [  G% g% w7 e" P0 d7 V9 M8 V' M5 v9 }6 ^
set ymax 1.0
9 k0 B1 h, V& G5 P% M8 h
1 \- @7 _) D* Q  ?( f
clear-all-plots
' ^3 C" u* t7 f- d6 L
! U5 I7 Z6 a1 Q  |0 _
setup-plot1
/ Z4 F7 N" b9 Q1 y

4 F( o7 g; {" y5 X2 o% e8 ]setup-plot2

+ M5 _+ W- B' j' }4 z% k# h) `: d, O% J5 u
setup-plot3
8 ^3 f" u$ I  F( N' L. H
end
& x0 t! f* m( B) Z2 a
0 ?$ F# C: f6 c# |;;run time procedures" @/ j6 P0 u8 t+ b

2 Q2 C% j  w$ q+ ~8 H& b# C# m; b$ j! jto go. V, j' N0 m8 q( r5 ~+ e
# m* `/ k0 d' q6 v5 k) a; [5 P
ask turtles [do-business]
, K4 N9 o) W) P! x( H/ S
end" ^! [, n' {+ f; T7 A' p8 k- U! ]

* O- q+ C' E; d! y( j# l/ [to do-business
/ j4 [: o) [/ h  D7 \

! P2 D  k4 @! b. \5 P, p; n: d3 o' T
8 u0 I# Z1 B4 \0 Krt random 360

& v8 X' D3 S  n3 p* F' V$ q* Z5 ?' y
: {' A: v8 X* `, d: ~fd 1

- U9 c5 Z8 \. A/ R$ O5 d6 ~" X& |% Y( l/ u/ Q
ifelse(other turtles-here != nobody)[
) @: O+ s( J& d( ^5 Q
! S+ ^/ x$ c6 W$ Q3 k
set customer one-of other turtles-here
9 I1 F3 f& ^$ x* c- j

3 \- O7 H( ]& X. \# S& Z' R8 Z;; set [customer] of customer myself
$ g" z; A/ A0 g8 a* \

- h7 v& U; ?. Y; Vset [trade-record-one] of self item (([who] of customer) - 1). V/ o1 M( Y5 q7 g, D" z  \4 v. r
[trade-record-all]of self
* l# V' q% E8 f  x+ d0 N7 h;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
' W1 j# Y5 ]6 C: }7 }/ r; u/ d

% c! g8 j# I+ y+ a3 oset [trade-record-one] of customer item (([who] of self) - 1)
  j  u) I" p! G) W9 y, G[trade-record-all]of customer
# f' V# v2 K1 d8 c: S$ O# T1 [4 P

& Q4 @# u+ O1 B1 w& e8 D$ Sset [trade-record-one-len] of self length [trade-record-one] of self
1 ^4 Y# f1 }% G  _+ C+ d. r

# y' e; X7 _+ @" h  |( z1 i- r6 {set trade-record-current( list (timer) (random money-upper-limit))

+ P) d! ?5 j. U$ c3 L( t
* }" g4 v, W7 e0 k# F+ [% Task self [do-trust]4 @! y: F, k! {' N  @( @
;;
先求ij的信任度  T9 p0 _" z' G% \, d

  d1 W* t$ X9 r$ b& s5 J5 iif ([trust-ok] of self)
1 b9 q; v4 p( n: K;;
根据ij的信任度来决定是否与j进行交易[
/ b  Z  I5 E( y( l$ Nask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
5 R0 w( I/ A4 k! B0 w3 G  B/ H7 k2 e
[

$ m7 l/ M1 Y2 q/ y0 C& T2 ]6 k! p) V  |4 U0 G7 z" N
do-trade
  d% F* a! S) {! c
* U/ S2 C/ O+ k- H2 Z" X/ S5 D, X
update-credibility-ijl

, F& a4 B5 G4 i  w1 v' e0 s$ L) {
update-credibility-list; F. b. e" w9 }0 s
3 Q1 W  @" a; u& `% C

+ `+ m9 t& E8 b( vupdate-global-reputation-list

- o3 y3 H( b  t2 M. t) |1 B: s" U
poll-class
1 Q3 P4 h3 V8 D8 s: R
7 ^: z- f9 n% B4 m  r0 w8 O
get-color

- U/ |( ?" R8 S6 T9 I2 d4 t' e1 \5 l8 d7 b  e& E% n: b
]]& r+ [3 ?' ?0 I! u( B7 e% ]8 d

; q2 }) x" f3 P1 e, {) @8 t1 N;;
如果所得的信任度满足条件,则进行交易" Z+ D0 ~- H1 H7 w8 K7 ?

7 W( k! Y; u. i1 W( F# J[

* T# {+ V0 o3 m& j$ o: q+ P6 s# v; U9 b& X( Y, Y: H
rt random 360

; M% h. o* m% H1 U) h* f2 X4 X  O# S  @9 F, V9 W$ k7 Q
fd 1

2 T# d6 J+ j4 p+ W. Q- c4 A- F, T) ~/ \# b+ n
]
1 _- T, L7 K" ~7 L9 R3 J  H
. Q) [4 A6 R# R& p
end
8 C1 _8 F3 d0 ~" a2 w! h' y

5 ]  R1 B& L7 k+ I8 I. i5 yto do-trust + Q3 u, E) x% G, _9 o. j
set trust-ok False& r9 R7 A+ A/ f5 ]) L# M/ R
4 `+ v. J, [+ _1 L8 l) X6 v

8 N( O, {7 G3 z  {2 E) ~let max-trade-times 01 C9 W0 }8 D# W5 P0 {- k
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
' C- h8 ?2 D2 F) vlet max-trade-money 04 K4 J5 v  G. F* h# X  v$ L
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]0 b$ J& K: V% Y, v
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
" P7 }  S3 c1 r, ~2 Z( }+ M
3 z, T5 G& l# |, Z# x; H5 X# G/ {

7 x4 r6 j( }5 R4 U9 m( A2 p' c* Dget-global-proportion
) D) J9 ^6 [  tlet trust-value
5 [; |7 [* P3 z, Y! ?8 plocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
3 r; S9 E# W8 ~6 _2 g  A9 ^
if(trust-value > trade-trust-value)
$ Q( g" [2 O' U; B[set trust-ok true]% B# B6 E0 u: Z% ^
end
  ]" N) Z* H# H
. j& z' Z5 L0 K" k9 ]2 B, B+ jto get-global-proportion0 [! P. b; Z* m3 d" i% N* W6 ~
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)9 _/ c5 ]1 Y9 q, N
[set global-proportion 0]
+ \8 y% [& F! J! J( ~6 P[let i 0
" H+ S2 j; D3 v4 f3 w. P8 jlet sum-money 0- o# g  V8 [$ c# R. n, g
while[ i < people]/ {( p. n4 i3 V) U$ T
[9 B$ G7 b' y5 B
if( length (item i" {" w6 L. ]% \6 W$ v; C' o& z- T
[trade-record-all] of customer) > 3 )
" {7 `; \5 S- f& `
[
' e# A; c) d' y2 q# K) X3 ]8 n# f" S: cset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
  Z/ T" O. T( t- ~7 u]3 b$ R6 M" b+ V1 R/ r) ]' J: ]
]  R% ?9 a% M) H) y3 e1 ^+ `  ]( K
let j 0
7 U/ F' b) Y  h: H7 dlet note 07 p5 C9 {1 a9 t( `) I
while[ j < people]' \6 f- p, ^( ~' n/ O
[
" e7 j& r# |3 _4 L4 uif( length (item i
1 {1 R: R. e) l[trade-record-all] of customer) > 3 )
: ?2 ~( ~9 ^3 x
[4 B  R, |7 W, m
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
3 }9 |4 D. g) p( f[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
4 J) c; t0 W% B; f* u[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]9 f. n5 K5 S$ m. v$ q
]
" T% `& t, k; e# f]
& `) F" I, z2 }% u- eset global-proportion note9 U3 ^/ C- o! V
]
% A5 a$ E/ R! I2 l" H- S# u2 dend( J: T$ \0 D2 o" |7 u/ M

4 b* F; c" c  u! m; i, K( w8 d. Q3 eto do-trade, k, w4 f7 {& F6 H3 r
;;
这个过程实际上是给双方作出评价的过程" Q5 S) V$ B$ f6 y- |( r% C
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价1 H' h$ G+ h4 C0 R4 L
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
# w' Z; {# ]# g0 ^set trade-record-current lput(timer) trade-record-current
% K* e/ O: g8 \;;
评价时间
7 p* ~4 R: |2 X8 H- task myself [
- O4 f9 i, d6 A- @, Y4 [3 Oupdate-local-reputation
3 h6 }+ \5 M" q5 Vset trade-record-current lput([local-reputation] of myself) trade-record-current
8 R& a- o" \) m# p7 L3 v]8 r5 W8 C: `1 f6 d" ~# q% j
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself/ T2 s  U+ w' F2 Y2 ?- G6 G! J
;;
将此次交易的记录加入到trade-record-one
- E. {2 J- Y+ b7 E7 g9 a) l& W* Fset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)) `" G/ T6 D3 U7 w
let note (item 2 trade-record-current ). G" W; @9 h9 g0 ?4 X
set trade-record-current" l8 x6 J& V  A9 c
(replace-item 2 trade-record-current (item 3 trade-record-current))

1 ^! w* g! A+ F. _0 oset trade-record-current, S0 n* `1 N( m2 p. S/ }. d: \
(replace-item 3 trade-record-current note)
  i2 ]9 ]/ e9 Z+ o, n
- ~% G- q% Y* C5 H# P- x8 v% U

0 U1 a# Q% D+ ?  \# H5 eask customer [. B* l7 Q1 }8 b- C& T( a
update-local-reputation; ~1 `3 O+ i! z+ L! p* `% g
set trade-record-current
4 W( t) c9 C& {3 f* n2 T' B(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

5 @8 _$ ~6 C  Z, g% |- Y]
- R$ r- H4 J8 }5 J) ?- w+ Q/ l8 u7 R0 l4 d- K, y
0 x/ c" I: E5 Z7 H" w% J2 O
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer! a) M! S+ L. b6 A
7 M' P& I( j5 Q
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))6 v( m  {- Q5 v
;;
将此次交易的记录加入到customertrade-record-all
8 W4 T- u2 ?1 Q/ B$ f. S7 rend6 M  w. m3 V9 D. Y; ?+ Z
* V  q. B  V9 H- y) M* p( O( O
to update-local-reputation- R  H8 _1 a6 g- S2 _5 B
set [trade-record-one-len] of myself length [trade-record-one] of myself
8 |7 m) ]) u) I' m6 n+ n  V
' F2 E$ g0 a, C! ^
& f, A1 L. H( E;;if [trade-record-one-len] of myself > 3
/ l+ S6 a* y# f7 M
update-neighbor-total
, }8 o4 w, _: Z;;
更新邻居节点的数目,在此进行
- n# N$ Y" c# b; r; y7 |7 Olet i 3( }8 b& `3 I3 I) P' w- n: n5 ^
let sum-time 0# P& N# p: A; ]% @) `, a
while[i < [trade-record-one-len] of myself]# C0 D: d& J: `/ c6 D! e
[
% J' c! O! H- q: xset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )" I$ Y9 d$ x* V0 ]4 H" W/ _
set i
5 h8 I5 h7 I! N' Q2 U1 R( i + 1)

0 o6 H! d) T1 ]& N" j* a  c# s]/ m4 B- Z3 ^' f3 C" E- K! G7 o
let j 3! _. G( _0 S& L: n' ~
let sum-money 0
( y) r' V% y  J$ R$ r. _while[j < [trade-record-one-len] of myself]
. O! F( L9 t. h; b  \3 ~[
7 o6 f, M- M" i( U0 oset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)* r: R5 g, f8 T5 ]/ l
set j1 a/ {; I  \2 y% l) O( H
( j + 1)

/ @: ~+ c! c; T. l]- Y3 s2 o9 J7 {8 @
let k 35 A% S6 ^, }1 S7 e( X+ j& }
let power 0+ G3 N+ w7 S2 M
let local 0
0 t  a5 ^7 S! d& cwhile [k <[trade-record-one-len] of myself]5 C/ c+ D7 f! `( E' V$ W( I7 P3 L
[
$ h. t0 Z' u- @. xset 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) , E; x: P4 n3 B  U9 J
set k (k + 1)0 \- k4 E. M9 A% L: Y
]+ R+ l5 U- M% z9 X1 c; [. b
set [local-reputation] of myself (local); W8 w# ]3 k; O
end# A# w! f, C- Y
9 Q3 c$ w8 k  ]6 c6 F5 z- {
to update-neighbor-total  G7 a* Q( ~4 T. J! l, g+ o

: l6 n, w- z+ R; xif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
; X  W- A: Z, a9 ?6 a' m0 ]: W
- K6 D. X) l$ Q: J6 D

5 w/ Y  |1 ~1 y. Q, \end
3 J9 u  C* H: C& x4 |& v/ I5 a/ B% D
to update-credibility-ijl
# ~# F2 g, L# L6 w: ?. v% _
; o2 s' o9 z  ?;;
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。
4 M  \+ G  E8 v  R" K: dlet l 0
5 j  |) w' j) Y: j/ nwhile[ l < people ]
- S" g9 x# Y, @" I9 u;;
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 s& ~' s' J# T+ x3 C8 X[# j, A% Y& v' p' P6 @2 z
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)* Y) X; X5 R3 T, [/ Q2 t  q
if (trade-record-one-j-l-len > 3)  K& h8 c8 w/ V6 Q2 h0 _/ k7 w1 P
[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
$ C3 H. h$ g* e! t- Z- [1 V7 klet i 3
! c5 C7 U0 T# X9 H# E/ l) G% Alet sum-time 09 ]9 K6 v; t: M' P& i
while[i < trade-record-one-len]
- q- Z) o6 Y% r1 `7 @4 m8 k# y8 d[! a: T* J& O3 T$ R( R5 d
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
4 ?. V+ X. Z% W9 Zset i; I0 E( m: C7 I
( i + 1)

0 Z- I  V0 m& h& g) i]9 g4 ^1 D. L; E; J' R
let credibility-i-j-l 0
0 q& u$ G5 ?/ z2 S  K3 c;;i
评价(jjl的评价)
9 H6 x2 O, k& [7 f! ulet j 3
2 i& w$ Z& z( H* d9 X, `" H! plet k 4
8 z- S; i6 t; v$ _& N: owhile[j < trade-record-one-len]2 x8 `  p: P2 Q+ c
[* |7 B* |1 `# U- 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# w  ?: ~, N1 L  e2 [
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)
5 Y+ }# z: a( `/ Kset j
7 m  I6 A2 h4 M0 o( w  ~. C# b% B( j + 1)

, V! A  q; `" c* j' w]
& D# Y2 g* Z! x; Sset [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 ))
1 ~" M* X7 @$ O7 Z+ o
- E& a! k1 Y4 Y# ]6 e, P
4 A5 c* Q. p: D; d6 E2 A7 K& Q
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
' D2 ~3 A! a! H* S8 e( v3 G- d' q;;
及时更新il的评价质量的评价
" W2 Y* M) a0 g$ k+ Wset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]% G) |3 Z( M( p) L; ?6 P* C$ t
set l (l + 1)1 T1 x& P: A) p& C1 d
]
1 y; n( n- n$ V8 Wend
+ o% a7 R; d  ?  E: D+ e
& X3 B3 M% D+ L3 L3 Uto update-credibility-list, P' Q+ k" X' J
let i 0" [9 H- x+ I; s. C5 I' D' o
while[i < people]2 \4 S" s# y( E' K: ~
[
8 `6 V9 ]: I- t( X# R( W5 g/ }! Elet j 0
6 {1 O& d5 G- N, D. a2 o  ~let note 0" Z' E% ^+ R) u) j
let k 06 ^% `) A& U* l, c
;;
计作出过评价的邻居节点的数目- x9 h" T8 ]; S6 @7 j
while[j < people]: L# p$ Q" o$ W% N
[
7 c1 C9 M2 X$ |if (item j( [credibility] of turtle (i + 1)) != -1)( z% ?+ s5 d+ g5 ~" a$ Q
;;
判断是否给本turtle的评价质量做出过评价的节点  Y. N3 P7 L) O( g9 r7 C
[set note (note + item j ([credibility]of turtle (i + 1)))4 q! `9 ]7 V$ q. ?# u+ E
;;*(exp (-(people - 2)))/(people - 2))]

+ O& T$ |. B6 n# ~( T3 Z9 eset k (k + 1)
: j$ B0 Y/ V( G2 X+ g], S2 r! f4 n7 V3 e& y" u
set j (j + 1)2 P- O& b4 p+ A" ~% a' u2 k
]
3 o% w7 y. G0 x8 g6 q  \! uset note (note *(exp (- (1 / k)))/ k)
, c1 ]- B8 R. j5 q1 w: Uset credibility-list (replace-item i credibility-list note)) }$ g8 b: p( X- \
set i (i + 1). Y* ]5 Y  @' i1 z0 j4 O2 B
]- a1 P' }& U+ w' M, w/ v% V3 c
end9 O/ Z" K/ t) d; b! G( N, r

5 ?) u& c7 Q+ f" S% jto update-global-reputation-list
/ y+ r) B0 l' X% r  [* ]9 u) s7 nlet j 0' }) e$ E# n2 h6 r; B# S$ `
while[j < people], X+ J$ a4 R  T
[
, F9 _# p( b& A* }* U1 S$ A- f2 glet new 0
0 y1 O4 [8 m/ X! x2 E' i1 l. V;;
暂存新的一个全局声誉0 @* k' s6 L: G1 c+ |, Z. M
let i 0
$ R% S8 K9 l/ v7 E. [6 mlet sum-money 0
, x* V( ?) g- h$ ^let credibility-money 00 U- D5 p+ y6 g  j
while [i < people]' m3 W( a9 c' K* G7 q: p2 ^3 C1 ~  P
[4 R' f0 C, A6 `: R& U
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))- P# ~$ e6 a# Q
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
0 x* @- [. q& o6 F% E+ Aset i (i + 1)% V- O  x4 m% G
]4 _) s4 [6 m& R% }
let k 0$ ?! C) A; ~& k. q% t0 X0 z6 z
let new1 0
6 k0 z9 H; y, i. i  ~2 L, Xwhile [k < people]- L, Y8 F* E: K. m% F) w, `
[  m4 O6 k6 h0 \( d- \
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); C( `% D0 Q' ^  d
set k (k + 1)0 \7 @  x( E5 P" \
]# y. X# S! L& b" m" L
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)   f" G6 p$ m, q6 j6 X7 a0 A
set global-reputation-list (replace-item j global-reputation-list new)5 [0 |, Z! c: P3 g
set j (j + 1)3 Y$ ~5 g# r. K: e
]1 C7 l- _8 I  o  Y: G8 [
end6 k' t7 v! d" l
3 p, \6 A! u" N) D9 F
" k# [- b& K5 m3 }, t( E  U

  Y7 a, m- T) Q% }" \to get-color- [8 O+ n9 v8 {" A
$ Y5 \* m: A% f. N& A9 P
set color blue

/ N/ D% j7 \8 x: e2 i+ kend
; }# B' O. ^- M) U( b: M) m
5 d8 T9 I4 k/ I, @to poll-class
/ ^3 L) m8 H( s7 nend; c7 ]' A/ B$ |+ e

' }4 d2 V. I( Y6 \to setup-plot10 {/ g: W8 l" E! U& I8 f
$ |' Q& s) r" M0 w
set-current-plot "Trends-of-Local-reputation"

& l% M$ l' |; b
, [! m% X& q4 R+ }" o8 Nset-plot-x-range 0 xmax

+ N, i: Q5 f# P8 n: ^2 V6 @1 i$ o( @1 H5 _+ V' D) \! J
set-plot-y-range 0.0 ymax
" }( o: t% i2 E  B  g
end7 @2 ?$ F1 [: |9 Y/ z" e# }: X0 N
' \/ E- u. z& q9 A0 D# y
to setup-plot23 E# g  Q! ?3 ^1 H

1 E$ X9 \0 d; Bset-current-plot "Trends-of-global-reputation"

% K4 v5 J6 H7 W* h: W2 ]+ K5 d
7 z  g3 V' ?9 A7 l/ g  Zset-plot-x-range 0 xmax
6 B0 u. u/ F+ C8 r5 z

! p1 g5 S0 g+ j4 }9 @3 D3 \( W8 Fset-plot-y-range 0.0 ymax
' n- C6 T  x7 ~9 s, c. e- P, L
end) @$ h# W' @% r# ~0 n7 k

( ^$ e! a4 N! s! m5 I+ P1 rto setup-plot3
" W- v1 g/ |% G, O) F8 |7 n5 m. m$ P2 o( F6 t2 G; L, w
set-current-plot "Trends-of-credibility"
9 N) @/ m5 J6 t  L

+ [: v& I: |5 r4 Uset-plot-x-range 0 xmax

: P3 r8 Y1 J" c, G9 ?; J& ]4 E- w3 l, u
set-plot-y-range 0.0 ymax
" M+ k) V8 h7 T" F7 d
end3 S# K# I' H* f& |6 X2 `$ V( k

/ n* x, ~1 \- `+ r' D1 @1 \3 c7 e3 Rto do-plots3 m! y' X) A( t, j
set-current-plot "Trends-of-Local-reputation"& }/ m0 K5 y; x6 d- ~) ]
set-current-plot-pen "Honest service"* G1 e+ n" p3 p$ ?5 P2 B+ O- b4 Y$ x
end
, M; \9 d( F2 N6 |0 j
- \2 M- I* b, n) 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.% o, P- v5 o+ @1 X, n9 `( N8 T
* o: l6 ^* S: ^4 m7 k
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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