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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:$ Y+ U: l7 L% `$ b. f2 s
to do-business
) f! @+ Y* v# y" T rt random 3602 g6 w% \7 w: T+ e* ^1 v; t
fd 1  X/ \* t3 n. a: D8 m
ifelse(other turtles-here != nobody)[
3 G4 t! {# \% y, 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.+ R" W  l) ?1 k! e: h% y# i
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    1 A9 g& B% L/ N" T. b* c3 U
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
$ d& r& Z2 E" l' u& |$ o   set [trade-record-one-len] of self length [trade-record-one] of self
; s. ?, J0 g8 R! D1 ]3 o9 k5 i4 {) q' {2 @   set trade-record-current( list (timer) (random money-upper-limit))
4 y9 G9 ?5 L% E
0 ~5 ~8 ?$ ]0 M9 d6 V# C8 \( U问题的提示如下:
- Z0 j; a# e' |7 S+ `; S. q! U3 T, q# @% ~( @: [, a
error while turtle 50 running OF in procedure DO-BUSINESS
* ]# V' ^9 {* J# N2 c% q4 t  called by procedure GO) Z+ a, N6 V9 g% v6 r5 r
OF expected input to be a turtle agentset or turtle but got NOBODY instead.& U& }& V( p& E' [% f" M! l
(halted running of go)" h0 V$ G" e1 F* U

4 a: |4 j. ], p+ v' S; d+ 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~~
4 _) ^0 }3 t: @. x; 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. R; J2 j- f. ^5 n
globals[* O, o$ M# u8 P0 p, R% S. z! L
xmax
+ t; N& A# r1 w+ R& |  r1 gymax
) C" h$ P/ m: b" Vglobal-reputation-list+ ?2 b  x, o! k- n* r7 x4 m
* ]) O8 \& j$ B  l8 `# V& N
;;
每一个turtle的全局声誉都存在此LIST3 f. P# r! ^( o: {1 d
credibility-list7 E4 Z: j# P" T5 F
;;
每一个turtle的评价可信度
) s5 O, S3 T( _2 V: r8 R+ w2 g3 |9 Zhonest-service& a, o) B" m8 t( |. ~2 H- |
unhonest-service
0 R% x- @& ]7 }, i+ P% I5 H% Goscillation% Q" Q- M, L. \; ?6 h$ V
rand-dynamic
0 f1 V" _+ M' @& _1 L]
) c- U1 W# u) M& O" O7 \! Y* z6 |' S% M, O& c
turtles-own[
" H1 J& K+ m  k( g/ M: qtrade-record-all
* t' |) h& L8 N;;a list of lists,
trade-record-one组成
2 P& W# s: @$ T/ {: q! ztrade-record-one" h/ U3 ~" t! R% M- b( x; b
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
, A$ ^3 K+ S% s& `! c. B" m4 u( D( y# \- L5 y* \
;;[
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]]& \- S" T- D% D
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]
$ Z# E4 p1 t" T& vcredibility-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
' U4 k; J& _- X$ d9 `; c" }neighbor-total% g! P0 \3 X) B2 J1 y
;;
记录该turtle的邻居节点的数目
5 t# f( @3 C0 y( Ktrade-time
; E8 Y4 |8 d% y7 ]9 ?% R( f& \$ k;;
当前发生交易的turtle的交易时间' o, m7 n' ?7 T5 C( x7 H
appraise-give
8 C/ T: p8 |& R4 b; C;;
当前发生交易时给出的评价8 \& H1 a" x9 ]$ y; ?) ?$ l
appraise-receive
! K$ V, G7 [: c$ ?& v4 n6 m;;
当前发生交易时收到的评价# z% e2 a. X) B* G
appraise-time
* `- D5 c# E5 \. a1 N4 G7 U; B# L;;
当前发生交易时的评价时间
6 w9 l8 q* H( D) {0 f8 P6 Plocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
' U, b3 K& R! f  c" C% P6 _4 {trade-times-total; ~- N4 A- f& {
;;
与当前turtle的交易总次数3 Y* k- y% a$ r2 c# M, B
trade-money-total
0 U" s; q9 _( {: u1 w;;
与当前turtle的交易总金额% D4 B" r/ ?, l$ Z
local-reputation$ {/ N: j- P/ w# M5 ?
global-reputation5 Q$ N: S! u& `$ ~9 }4 o
credibility
' ?! [; W5 K% ?6 E;;
评价可信度,每次交易后都需要更新$ s- `+ p7 B9 r
credibility-all
# `& Z# `# {' R;;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+ o, f$ M/ ]8 [8 k$ }$ }2 D

6 E$ E$ |6 c' Q( O  t' _" J;;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( b6 o/ g' D$ @6 f
credibility-one
) x0 A) q7 m6 E, H$ \  z: `5 Y7 [;;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( ]2 q) i  M! \7 C
global-proportion& h" a) B  I5 K9 K7 S2 k
customer8 W) Z5 r2 h' p( X  d5 @( H
customer-no/ K( p% x9 ^# k5 I
trust-ok
% [4 C2 v( L9 `! H4 l$ k  [4 L2 Ptrade-record-one-len;;trade-record-one的长度
: L: W) S- i) H]+ `8 g8 c& G/ W" c

& d2 b2 L5 e9 s% }: ]9 Y;;setup procedure5 V% {- f) l0 c+ |; O7 h: T1 W
- ?+ S$ i) ~8 g" Z
to setup; z4 }8 F) n4 M

1 [" I9 L! `5 r# s4 Sca

# J+ w; p  d  T( r2 b) |
4 L* [; s8 S1 O  m. q1 rinitialize-settings

6 {4 o+ j- y$ F
* W" S! z% V; v$ }1 _crt people [setup-turtles]

. c! Y; @0 A# l+ p3 y. P  q) t" L9 k
reset-timer
$ P, f' G5 m* O: Z

4 J  ]; @% b. v% I$ ^8 X3 Tpoll-class
! K' C, P1 a% P7 r7 A

; ~2 U" l4 r# F5 G# Msetup-plots

7 x5 z5 y5 e" c% w2 H2 i4 D4 Z. u/ Q
do-plots

1 N/ I7 |, W8 Y2 B, m% M5 Nend
( Q9 B8 L( {3 V2 Y5 a- T, ?7 i9 H2 M: P2 |2 I
to initialize-settings
( ^9 |' |  \0 w& r0 e/ m8 s- S% ]( C7 d  J- x2 |
set global-reputation-list []
2 J& E3 d( L, c9 u7 q

# B- h5 v% y5 z$ d* I; z: rset credibility-list n-values people [0.5]

: ^& `4 b: _+ w* P  v0 h: {/ ?; T* T/ g' h7 D6 K
set honest-service 0

; z4 z8 z* T/ {! [" Q* N% n
. `7 `$ X3 [. H0 Z3 aset unhonest-service 0
+ Z1 V4 z# M- p5 h% b5 C

- T1 Q' ]4 K$ j6 R* U) |) c3 ~set oscillation 0

. B6 ^+ V' }1 K$ V5 o% G) {0 w8 X% Y/ d, G6 p6 ~- `: b, ^2 }
set rand-dynamic 0
5 L- k+ t( T/ w' {
end& B+ Y3 x, x' b9 v, L  d1 Z
9 Y5 B, j$ g. d; c$ m
to setup-turtles   M; O; ^1 \# O$ ~1 N) a# c$ B
set shape "person"4 F5 J  i0 V% u  h" Q+ V5 b1 v8 B
setxy random-xcor random-ycor
! ]8 H$ Q) }$ \! |set trade-record-one []  U5 \- h1 a. o' e: V* t. j
1 U+ b" }% p# p
set trade-record-all n-values people [(list (? + 1) 0 0)]
, c* J  c+ Q) p& c

. h3 Y% M2 F! m5 g; m8 o# jset trade-record-current []8 r' Q$ S. w1 Q+ H2 B5 W, c
set credibility-receive []
( w$ B0 B# a: y7 E+ `3 nset local-reputation 0.5- Q- d! d( r7 ~& j0 S0 e( Q
set neighbor-total 05 O1 g# n6 n2 N2 i3 h+ O" \, O
set trade-times-total 0
2 V  @( _! W4 Q( L! ?" a4 N; a; bset trade-money-total 0
$ [- i8 ~3 J# ~; vset customer nobody
* V- N5 [0 v! C1 |set credibility-all n-values people [creat-credibility]9 ?/ V8 o. U- {3 N# E* D" _
set credibility n-values people [-1]
$ l! }9 m) ?  ], e& }2 ^! X6 Jget-color6 i8 m5 @- a4 c1 T# h2 A
% g: s6 ?$ E9 d
end
9 t# f! [  b- J
0 y1 j9 F  F) U9 u2 w2 ^: {to-report creat-credibility& M' D0 L3 `: c2 B
report n-values people [0.5]7 u6 ~( T* i( m6 Z
end1 e( o# g9 t- s' o

# }: K- k3 X, E' t6 Q! B2 U# p( N- Zto setup-plots4 Z) X- u9 |3 }
) [! Z' |& U3 w# N# X2 R. ]
set xmax 30

. t/ W& w: p- {0 Q7 ?: j! T; D% r( d- J9 e: |8 T
set ymax 1.0
/ h: G( C# g3 J. \/ S. B/ K
5 n2 j/ G) f# H, {% D* Z, W
clear-all-plots

  L! U# P: B0 y6 _6 l9 V
! D8 c! f1 h  _  H: r) K% W4 Ysetup-plot1

9 w" }+ }5 d; P: v: m4 T: A2 O  p" v  q; n) O
setup-plot2
7 u* O& [9 V- y

. }5 ^, K, ^$ r+ E2 E1 Dsetup-plot3

* u5 |& W7 `- t* D! Uend& ?2 F2 P6 }- \' R$ D. U

5 }# V" Y  c; }% f4 R5 c, }9 m8 c;;run time procedures3 F& t+ }2 ^8 c& S( K1 H

$ ~$ u3 i" L8 d# @5 v! ~to go. A; P5 h2 K7 I1 }8 x% y# c- M4 E

" n6 W$ v4 k1 D: t. |ask turtles [do-business]

. R0 ?5 O( ~6 g9 k5 M6 kend
3 ?% F6 N# j- e2 C* k# q
1 O5 i: x: v, [% ^+ k6 d! cto do-business ' F( t+ @  p- `3 Z

" l' Q, f0 |. A! b$ a. v5 V3 P- K' f3 F% F" {
rt random 360
5 V. M9 i' r2 `5 ~
, D7 u* Z  b- ?2 C0 {
fd 1
! e6 B# w/ F' I1 t
, D: z/ u) ]+ c+ T/ N
ifelse(other turtles-here != nobody)[

8 X/ t5 q. `' I/ N1 L
9 s5 O3 [% L* ^2 K8 j7 A9 @set customer one-of other turtles-here
/ O, G" g5 E4 ~
1 P! h+ B1 v( P5 g6 X
;; set [customer] of customer myself

6 W+ E+ J, D0 v6 ~* [  r$ T8 h. Y$ p
set [trade-record-one] of self item (([who] of customer) - 1)
- m, T+ p/ R. ^( b; ][trade-record-all]of self  o; B) e! G1 H  m) d: r
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

7 g6 s- I' \$ b1 F$ p
" C/ X; e. ]: G1 H9 cset [trade-record-one] of customer item (([who] of self) - 1); L+ ], e2 _; j) C$ s& s6 b  D
[trade-record-all]of customer

/ b! {. T" [' @0 \: U. u; h. E7 L: ]2 F, T. T' H4 n% a
set [trade-record-one-len] of self length [trade-record-one] of self
2 @: Y/ X- M# z* ?4 Z6 j( h9 J$ R' q1 }

0 y! v/ S7 T7 i7 n! Vset trade-record-current( list (timer) (random money-upper-limit))
1 a" v4 ?: a6 r, o  F/ ?

2 p4 _. K: p* [: W* _2 n1 Qask self [do-trust]% T9 o/ W& Y9 E/ b
;;
先求ij的信任度% G. W/ w; j6 d6 T! L# q& D# ?

+ W; t& \6 ?: G6 F, f% l5 S' ]if ([trust-ok] of self)! g3 s' N: ^0 _2 S
;;
根据ij的信任度来决定是否与j进行交易[
! N! ^$ b: E1 B7 P* e) N" Qask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
+ ?% W' q* _9 D2 f, E5 ?/ F# y  T' e, z: T
[

1 c9 T5 L! `/ I* L5 y: p) J1 Z0 h) n3 m  Z; J9 P' U
do-trade

1 z' I" p% Q; `( {
: r: }% _2 ?2 ^) s' vupdate-credibility-ijl
0 T% Y! |* f* y7 g" t3 s+ `0 n5 i8 V8 A

3 D  e3 x9 i1 ~: L* C0 ]update-credibility-list5 r" }! M$ [) a! e/ ^, V$ ]0 n

* }9 x& K) B; H
; i: P0 i* p  z3 gupdate-global-reputation-list

4 T& s, F4 I8 X0 c6 o* N5 u: o; x% D  v+ s- F; X5 G& T
poll-class
; G( P" A. W# F  P4 H8 \
5 g0 s; r% E; b% n" n( r, @- I
get-color

, n' W4 N" h) Z$ m: e0 S2 y* `
; \4 q7 ]" L3 D- X+ v! v]]( @5 f8 X" a# u- }" U, Z! g4 j
$ P+ X1 T1 s9 A0 I
;;
如果所得的信任度满足条件,则进行交易
. e7 K0 y' u( v5 K
- J  J* D: L  a  H5 K" I[
, O) P# \* m) S+ n
/ o1 v8 z" i9 ^% G5 }
rt random 360

, {/ M+ m, |* y5 H, u* h) q6 L( @2 w8 Q  Z0 |8 e- T5 q
fd 1
5 }$ K/ B6 y' r' Z

( N9 q, b# ^# a; d- T" R]
( c- Z/ V) H* T; u) d

* q! R! h; ^8 e# gend
  J" S: y7 b6 R% u9 D$ @
! ]" N9 n8 S; S
to do-trust
: u& o, {/ e' s  {9 e/ \set trust-ok False
7 ~7 z8 F' Y( }% ^; q* \& V! g+ l$ Y7 ~+ ]# u0 {0 Y: {
1 r. I3 h. u* Y7 @
let max-trade-times 0
( t4 w* r- Z$ l1 cforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
% m# g% t7 a8 M2 A5 Elet max-trade-money 0& t( m( \( {$ p, {. ^
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]' U/ S. r& [* E4 [* d; ^7 w& K
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))) S# Y% e0 B3 I' T5 k
3 D) h1 r. t- K4 U
8 w( t9 i* I2 r- Z( X
get-global-proportion
4 C" @9 M0 t- o; [let trust-value9 h% t- [# M& |1 C% h$ e! ~: X# g
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 A: J; d. q' z6 Lif(trust-value > trade-trust-value)
. q0 _% x& u2 m& |0 J, O[set trust-ok true]
, t9 `3 d6 r  F# p( }end
! }6 R4 e3 T6 U8 F
9 u  ~& _3 A4 n7 V4 o' m  r* w% Zto get-global-proportion3 y* N1 z& I( n5 e& s, _0 j. J# X+ J
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)5 B2 g7 e; f2 a; }# D" R  o
[set global-proportion 0]
5 ?$ [0 N7 T! B. |4 B[let i 0
( L$ H! n. p. v. S$ y8 plet sum-money 0
/ E- s. g; X' ~9 Q9 Nwhile[ i < people]
1 b& q) H; s* F5 ^) S1 Z$ Z[3 P: i% i. Q& z! ~: N" h$ k
if( length (item i% ^0 V4 {+ G" U9 Y/ M( B
[trade-record-all] of customer) > 3 )

5 o7 f* R( L! s9 _* C/ `[
8 A  ?) Y! @& E* S! C* ]( Rset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
" I8 H* X) _6 n]& }7 S9 H9 d. c( R$ N0 w
]; _% x. `! Q& l, }3 `
let j 0
& N1 v% }+ T  dlet note 0- T& g* @) V; k
while[ j < people]' D8 u  _2 q- L3 H" ~3 D  Z
[
# Z% Y: Y* a" c+ P$ J- gif( length (item i
" L* @+ ^4 k' `8 o0 J/ D( V" c7 Q[trade-record-all] of customer) > 3 )

( e7 G" X2 F, `" e# P. y4 k[
" Q/ n3 ~: M4 m! o5 P7 M- aifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)8 z( i! w4 ^- t% I) P9 K- m
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)], `/ O# @) o2 S; C8 N5 W; {
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]! m, w% `) Y1 G, R. x
]
# P- ~: L3 N8 ]# E]  Q! _2 w" E& F  x7 [% f  X
set global-proportion note" S$ E7 l" O' G5 R3 g% {$ c1 q
]/ G( D4 {3 a0 B. F" m' ^' b0 c
end" j3 f, }( F, E5 N2 y5 D( b  E, T

% P8 x, J+ S0 g3 R0 o8 m& Sto do-trade
- O! s* O  o/ C/ j;;
这个过程实际上是给双方作出评价的过程
' z& m% N6 u4 r# }$ j/ Xset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价4 U! A% Y, H6 d7 v  b
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
6 D2 L7 p1 U- _% C1 lset trade-record-current lput(timer) trade-record-current. B( e7 }( X4 W+ Y
;;
评价时间
) Q. B" V5 D- {6 l7 Y* s/ lask myself [
  O8 K7 v6 ~& i% u7 J3 \update-local-reputation
0 u5 w7 y8 }0 |6 ~) Qset trade-record-current lput([local-reputation] of myself) trade-record-current
, x9 s6 }% S# P( n]  w; e2 R5 |% ?$ X
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
. ?& M6 S# \. r5 t6 {: p;;
将此次交易的记录加入到trade-record-one0 i' K$ |* j! k0 P; u( l8 O
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
6 [2 [) z4 ^3 b4 g# `9 [let note (item 2 trade-record-current )
) H- f+ Y+ b9 ^  ]set trade-record-current
% ^. [% Y5 x4 @+ d# ?(replace-item 2 trade-record-current (item 3 trade-record-current))

- L1 v) N* t4 l- Zset trade-record-current/ Y' ~: k& m& }, @' P
(replace-item 3 trade-record-current note)
, N# ]" A5 H* G( u+ M7 Y' E7 _
: z2 m0 W) n) P- x( ]0 k
. }( M" B  h: y3 D
ask customer [
& q$ |$ Y& U+ u1 w. _0 [update-local-reputation
* I3 O; M/ z; U5 A! W% t4 dset trade-record-current
3 `7 ]9 U  i- I3 S( C, ^# `( n(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
5 [  o8 ~# x5 W- P5 h( l0 x
]$ F3 v; [; A7 \0 M

) O5 f) T  Z1 c3 [& N: W) G9 ^

3 C; N: F' q2 G6 y( W: B" |set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
, b- q7 g4 \7 l' r) M0 [. l
% o& h* N8 Z2 V8 d
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
/ @: j6 z/ r$ N3 v;;
将此次交易的记录加入到customertrade-record-all7 N" H0 M% x2 U- N) e- n
end
* c% y" r+ T$ L4 E9 @) d8 J6 }( h, g4 [
to update-local-reputation
. h  K% \' \4 _7 R5 ~set [trade-record-one-len] of myself length [trade-record-one] of myself
1 Y, V! ^  F$ S/ s1 s  r- d) G0 s& d* |! l6 e

/ z  k6 @& w+ D* k2 D' H;;if [trade-record-one-len] of myself > 3

# R/ O# q& [" S8 S& ^update-neighbor-total
4 n2 h9 f1 G2 y/ [$ q;;
更新邻居节点的数目,在此进行) f1 H- [( H% |8 m
let i 3+ G8 G% `. E  B" J9 ?
let sum-time 0
8 q! h1 e, \, cwhile[i < [trade-record-one-len] of myself]" T: X9 k9 \. ^! ]' Y
[$ q% A8 G2 w! I) S( q" d* m0 H
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
8 L! j2 L( R6 J7 @) x. ^set i1 |' C+ c: a# j2 x# w
( i + 1)
5 S- O4 w1 S# d' |3 I2 w
]
2 \/ b/ q6 E9 T6 _  q' }" Xlet j 3: O+ |5 b6 I6 Q2 m+ A; H
let sum-money 02 C& S- a& T7 w( f1 U7 w
while[j < [trade-record-one-len] of myself]& u/ d6 g' G. G9 }8 }
[
% d4 ~0 g+ c5 S& x" ^* N; m1 |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)
. K/ I' L. \/ G# ^9 j# O+ `- fset j
$ d! y+ n5 @6 n* q+ K0 T( Q( j + 1)
, A* C+ a1 [2 ?* w
]
5 v5 i- X6 j& v# dlet k 3
* H: i, B5 r" y! u* ylet power 0
% b( _3 n7 c, flet local 0" Y8 Y* Y0 o6 V: a4 T
while [k <[trade-record-one-len] of myself]
4 O8 C9 t. y& \6 j/ G& J# r- |[/ d4 y2 G$ w  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)
" ^7 `* m6 v& Rset k (k + 1)/ E. F8 v5 Y9 ?
]* r8 e8 y- u/ C9 i
set [local-reputation] of myself (local)
) ^" Y; |- ], \* P0 {1 Send7 B& F8 _/ {! z+ K/ ?9 c- o
9 n5 P! i! Z+ n3 j
to update-neighbor-total
% S6 D& q" k: m. A9 r2 q3 F: l5 `3 F6 \
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
& t/ c9 ^' K0 v3 P6 e$ Y
2 |& Y6 `5 e# j/ Q

5 m% f& l9 D! send
: b7 J+ [# G4 {( l+ O% L: ^: _. n' o# F+ R# t; Z, R2 i8 ?" C
to update-credibility-ijl
' l1 m8 n3 ]7 y3 a6 L5 n
. t# M: D- r) `) M4 [. B$ f, 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。/ F" |/ F! O! h+ M) ]2 c9 Z
let l 0
8 R% E+ ~4 G3 Q& Z/ H" M1 iwhile[ l < people ]
6 q/ k2 e) |/ N: ~;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价1 R; z+ ]: k/ B- @4 {
[
9 u' I! y; l0 r5 a+ I/ dlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
: A! e5 g$ i# Q! v, ^if (trade-record-one-j-l-len > 3)6 h/ t( Z/ o2 m0 R7 o6 w
[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
% i5 J, ^7 k6 c! {let i 3
' k. g% j3 x; u" L( y3 L3 `6 rlet sum-time 0
$ ?# ^+ T1 d$ ?' X7 Vwhile[i < trade-record-one-len]2 a; J$ l! X5 d4 p& n
[
: y! S+ f* S, y3 Y% Zset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
: F) R! t% U* F. B3 Fset i6 ^8 G% L6 w$ P. H( ?! n
( i + 1)
$ ?  F0 x3 Q5 g" A+ v
]
  p: Y; k& Z6 g0 nlet credibility-i-j-l 06 y" W8 F% }/ o2 P
;;i
评价(jjl的评价)
0 g3 m8 T% `8 q/ l# c( ?let j 3- ?* Z0 T2 C- s6 w9 d) i9 r3 c  g
let k 4; H1 M: Y7 n9 A, q  E& N
while[j < trade-record-one-len]
  [! _2 K8 I2 {1 N/ J& _1 z[% D# ]1 f7 S% ~) a
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
" N2 H( `3 H8 a! h3 @: w4 Cset 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)
7 Z8 h& C. F2 f' }% @set j" b4 _8 r( Q$ f) M+ T
( j + 1)
6 @( ~8 }* o0 t2 D' v
]
+ }8 B1 R8 a7 i( Oset [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 Q$ K2 V9 F4 r8 J4 z' J( o2 o0 g% `
' Z8 C# _& w* Q: q7 t
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)). u0 C7 M% T1 ]: ?
;;
及时更新il的评价质量的评价
8 _  n8 J) r( f1 r6 m+ Pset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
5 p# n# ]1 {  j+ b+ s; K, oset l (l + 1)
& K" `  |5 S4 y* r]5 E# ?! E3 T* Z7 E" B) P
end% X) p2 F5 Y$ n, L& W

) X4 l2 i$ C0 g" {to update-credibility-list
0 U+ G/ Z1 y5 ]7 K  }6 b. Ilet i 0
( l9 Z6 c; a# uwhile[i < people]' k" I+ m1 j' m) b5 T" U2 c
[" E! F2 ^9 q1 [9 |' M
let j 0
& B& B3 z2 @/ x, ]0 i: ^let note 0
0 J6 k& U3 N- E/ Glet k 0, f1 {! A/ f/ z- W/ V1 V& M
;;
计作出过评价的邻居节点的数目
7 r* r# N! v4 g8 w  |# Mwhile[j < people]0 g  z* Y6 E; s9 {& }
[& `4 x2 A: D  H& e! M
if (item j( [credibility] of turtle (i + 1)) != -1)
& m) C, t8 X! P, q4 V;;
判断是否给本turtle的评价质量做出过评价的节点! d# Y/ F+ J6 e. Y/ p" L9 E1 X
[set note (note + item j ([credibility]of turtle (i + 1)))7 M; r  H5 k7 j9 k: s: |
;;*(exp (-(people - 2)))/(people - 2))]
% m  t3 B, `  U+ F7 t
set k (k + 1)
: w1 y. F2 |, A7 V) [! m]
( R' |* _9 ]/ K& N7 D. [set j (j + 1)' t: A' Z8 Z: R1 V7 T
]+ B" J5 U: r2 z! d: {) C' c$ [
set note (note *(exp (- (1 / k)))/ k)
; @6 {2 K% h. }; j; Zset credibility-list (replace-item i credibility-list note)+ B2 W2 {" R8 i+ ^
set i (i + 1), q( c" S" }4 j0 Y# h0 S
]( {! k, S6 e4 A2 |, H
end' F3 B# P# l5 H  Q& s7 V

/ `) c0 p) K0 yto update-global-reputation-list5 M$ u+ W* g% A; l# ^/ c; h
let j 0
2 I$ U- F, f3 G1 owhile[j < people]6 k6 O" N. ^+ c; N- [8 A7 F
[
1 {5 j0 Z% K# ^+ ~/ k  clet new 0
* J7 K& x, c7 p, U$ _9 g;;
暂存新的一个全局声誉
4 Z  p  G+ m  I* Tlet i 0
8 ]; k. v& W# Y. A/ Ulet sum-money 0
: b# J/ Z/ T4 Alet credibility-money 09 x, M8 n  m- s: y. i
while [i < people]( a8 o0 f" |1 Z* I( U
[
" J% J/ H8 N+ xset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))! O6 l6 a. E0 B6 A7 Q( V
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
% i* n& z- f* M/ q; ~4 Sset i (i + 1)
) O$ o/ z1 T1 D8 ^! []
5 {% u) E3 J4 f' o, Vlet k 0
0 p! Q, f0 X9 u# [0 X! P% Z6 alet new1 0
5 N# h( O+ P- d3 z9 F5 y4 {while [k < people]9 X; u9 r7 Y5 y
[- O  h" p& F$ U" F+ X
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)  W. K+ Z) R/ @1 O( e& D
set k (k + 1)
2 t% f; o. }& w4 G# x( ^$ D]0 v& G" f) M' J+ |& C& V
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ( y: ?* D9 a! K+ E% ~: {
set global-reputation-list (replace-item j global-reputation-list new)+ c3 @, n# b3 V' [
set j (j + 1)
0 t; I3 S! e) y! M]0 |. N) @, E, [. e5 D
end
- o; U% f/ ~' o. S( M
# Q4 ~" X$ X. {- k3 Q
' z& Y& W7 ]5 A( S+ t1 F
% T: @6 i& m3 N1 L6 \1 p. sto get-color5 z/ F: x, w8 N; d
: @6 |8 V" b# k. c# g
set color blue
0 ~$ V- S/ R+ ?! V8 U
end
6 @' I, a; _# ?: ^1 B# F
# \5 y5 y) z6 e" B, u- Cto poll-class. M& ~0 u4 s8 f3 K) ~3 b; p3 n
end! a1 g1 J: h6 V2 z' B* Z
% [+ B  K5 W6 e$ B
to setup-plot1
$ ]( p5 X/ U- y  X' B2 `6 I- @: }* H# N3 U1 f1 j8 N0 i
set-current-plot "Trends-of-Local-reputation"

! {& S) c+ B& ^4 x: ]
. [1 B; F3 D- m& U: F. C: B6 C+ M5 g7 pset-plot-x-range 0 xmax
% D& u: S# e% j1 d

/ W. g5 }/ A% U5 {; oset-plot-y-range 0.0 ymax
% \( h. f/ {: @9 s' s
end
8 c. J2 r. Y  B9 s+ n, a9 e2 ]% A% Q: B& m
to setup-plot2( F% T5 d# f& a/ r1 Y
  H* G" d; l! c" x. R) B4 [  I' P
set-current-plot "Trends-of-global-reputation"

) m. W4 g' {7 \1 k. s
2 N7 \2 u: s8 v5 ~0 w* J: Y* Iset-plot-x-range 0 xmax
7 G- A" p1 j* _2 @
* }, d* k; @) P! D: T
set-plot-y-range 0.0 ymax
' {! n0 c3 b9 X- ?3 j* c
end" v: M6 J8 e0 t% i! _

6 F$ V% f" I  nto setup-plot3
& w: \9 f7 ]# D
# Y% y" e2 _: H2 p5 ^set-current-plot "Trends-of-credibility"
/ K5 s) a4 |  \% j4 o# N

" t; w* s# M0 Dset-plot-x-range 0 xmax

# d/ I+ c9 v5 X9 I! c" k! X2 ~) l) ^' L- v  {! s: ^5 A4 D, d3 ?
set-plot-y-range 0.0 ymax
$ q' P# v' Y7 E% [3 x. b
end
! K' |2 {5 V. e3 R, l3 ~" ?* s1 R
/ o  ^" C0 I3 ~to do-plots
5 n1 X0 W! `& J7 _" ?6 fset-current-plot "Trends-of-Local-reputation"# I) X/ J8 [) C6 V  w4 U
set-current-plot-pen "Honest service"/ Q8 Z+ k  r2 z, V; M& D
end
9 m. \5 X6 S+ T4 h& g7 W( v
3 F% [3 g9 A' L& H: j[ 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.6 W3 `% d, ~+ R0 w4 c4 |+ Z
# U' z6 c: k: l9 L( Y7 I% S
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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