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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:# ?$ o1 @/ R- g" n7 `6 t9 J
to do-business
6 F: E. i) P# w8 [( ~. |9 V rt random 360
* R  j' K: l: L/ }2 |$ ~6 p3 m: ?& p fd 1
; S+ J) g# N$ a  U ifelse(other turtles-here != nobody)[
0 h( M# t: i6 P4 u$ a) r6 J   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.
# d' B- b: r; o) ]   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
: g0 ]# P; K- F! ?$ s( I   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
: b9 w- r7 _: F4 q2 D( c* ^   set [trade-record-one-len] of self length [trade-record-one] of self
# v( E. {" y2 w5 n   set trade-record-current( list (timer) (random money-upper-limit))
; v0 [1 t" v1 ]8 o3 v0 ]' V% C2 c! }' @* Z1 }
问题的提示如下:' r- _+ F) T2 }9 D; D  z5 R

8 j# o  o+ n, W9 `error while turtle 50 running OF in procedure DO-BUSINESS
9 y" ?2 x2 v5 c  called by procedure GO
3 k1 o% ?8 u/ S5 F, BOF expected input to be a turtle agentset or turtle but got NOBODY instead.
( G) S  X+ m! o" X
(halted running of go)
  I" j6 R3 F& e& l
6 K& L! ^  p* o* H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~~# p+ {9 N. P1 E
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
+ \' }  V4 j- b! |1 Xglobals[$ h8 ^! ~$ X, Y# x9 u
xmax
$ u7 u* g2 `3 Wymax
! h% o' y, P) c3 \global-reputation-list
- V2 b5 d' f9 _0 i8 z8 b* |! k% ^, z9 Z) g# ^8 g& R! e
;;
每一个turtle的全局声誉都存在此LIST
! w0 A. v0 g, }- H% bcredibility-list
4 q0 H" x$ u  v4 g+ C;;
每一个turtle的评价可信度8 k7 F9 b, `9 Q5 E3 k- \" @
honest-service3 k# q& j& N" l9 p5 j! J( ^# K8 T
unhonest-service
( y" D/ X  s, t- ^! p+ doscillation
7 f) I& I/ C3 |+ R& vrand-dynamic
" c! x  s9 P' b; ]9 d]" O6 U9 T& w' Q0 P

. ]4 l( ?* S2 J1 |; I9 Bturtles-own[
' J8 E0 L3 P, k8 N1 j  btrade-record-all9 s4 A: Q# ?, @6 H! w+ o( f3 `
;;a list of lists,
trade-record-one组成9 Q; l4 u1 C' E4 {
trade-record-one2 C5 ~9 {7 X# V# g* {) C. g2 e# h  k
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录9 _6 A- H/ ~" M
' \" L, \+ o' m  `
;;[
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]]$ z; o2 \0 K* @7 g4 n* r0 }" I; K
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]4 D$ n  d& _: O+ i/ T
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list8 i3 I  A# i( }7 d- G6 X
neighbor-total
* \3 C. k  g, C* d;;
记录该turtle的邻居节点的数目9 v  R( t+ @" Y8 x: |% n# |4 X5 [. }; [
trade-time# v! d8 S/ |+ R3 n% h$ J9 Z
;;
当前发生交易的turtle的交易时间- g" r: p3 e1 J/ k0 X( q
appraise-give
+ q' }- g2 H8 V+ H;;
当前发生交易时给出的评价
8 v4 v- E# ^& O7 n; ~appraise-receive2 E$ A1 l. e! C& G2 m1 I
;;
当前发生交易时收到的评价* o8 [* V7 j) t. ^
appraise-time) \: l0 q8 H5 y/ `6 r. `' V* k
;;
当前发生交易时的评价时间
, x: w* a& p: w  rlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉8 r3 G% B2 N9 \# A9 r
trade-times-total: _9 W5 V+ _  o$ {8 e2 c+ Q; a
;;
与当前turtle的交易总次数
, L0 |) {4 g0 A& ztrade-money-total
! o% B' t& j5 y1 n7 H( m0 y3 ];;
与当前turtle的交易总金额
$ ^" O9 j. ^6 f( j$ W. D- h" jlocal-reputation: o- [: ^% L* w# @  l
global-reputation
& w" T, P# U3 X7 p/ ?credibility
9 Y9 z3 S/ \% h9 t- ~! s- v;;
评价可信度,每次交易后都需要更新$ n5 W+ B, y0 I0 I3 u6 i
credibility-all0 {" E6 s! `5 B: V" ^
;;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7 z9 G5 C6 p2 g+ U6 d# @- u: O
& Q' J. [6 j; A3 B4 B- N' ?% Z
;;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; y5 M. z" u7 c
credibility-one. @! S# Y# \/ V8 w
;;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
" X- u& r) Z9 D. hglobal-proportion, o) R( K& n( q
customer
. h6 z6 c% j# ^" acustomer-no
& m. ^) V4 p0 w  I7 Ptrust-ok6 h, s! @5 S  Y+ a, A1 s. P7 I4 T
trade-record-one-len;;trade-record-one的长度
8 F  M2 ~  _  p, Q5 |8 _]: O  Q- O6 ~6 y3 o3 A7 d

; t' u+ A2 B6 I* B;;setup procedure+ O! `" X% R1 @! f0 J" E
( q& ^8 X7 N6 p5 N6 D% s
to setup2 i- I! P6 d# K! p2 f5 f
( I- {" T! d% P3 V6 d& b( M
ca

7 k4 w; m4 X# R8 _% A! R* ]: x
! d' v3 w* g" ^4 w3 J6 y- V, kinitialize-settings
4 o8 J: X0 D/ z. [" U

: K& G5 {4 F' Zcrt people [setup-turtles]

3 r: }0 @, q& M+ l
2 A% r1 r1 B9 L2 s+ w$ R) lreset-timer

+ B7 @5 L- Y' r$ w# W+ c& {. h2 ^: ], m# w! }/ Z* W
poll-class

3 d! N% V2 Y, I% G) i4 ]8 d+ m
6 L0 I1 D/ v9 w! F& \$ U. Qsetup-plots
/ J1 [+ w, V  U4 \1 B
* Y: }. j% o; j/ U0 w
do-plots
/ G5 D* U) c. |2 f" M4 R# M- M
end$ ^* C) B! R8 K/ {+ {' y5 A

4 A' L, N/ `9 |4 D, n/ h( o' J/ U7 Wto initialize-settings* c' T. f4 w0 T7 i+ y/ U# _' F4 Z9 {: t

; S9 d+ x* }5 \/ G! z: [set global-reputation-list []

; L# o5 j* K" z5 C- @. \- a) r0 I% `. Z
set credibility-list n-values people [0.5]
( O4 x+ m+ N, y2 _" u" Y. k( d9 ]1 b
# ]4 i. P0 ]; q% `
set honest-service 0

% i! Z" P( P5 C. b; ]
5 E$ K4 v' u- F% n, Eset unhonest-service 0

$ \6 H9 X  o3 {& }- ?7 m9 s0 ^1 @
$ X7 |. n, t+ f2 v2 ?& @5 Xset oscillation 0

) d8 q( K/ s9 x2 B. z, [; ?
2 k0 N& D" J& yset rand-dynamic 0

7 I' @" A/ n1 W  Pend$ j9 n/ T3 L5 Y4 T( S, J
7 f" R6 f7 T' \( @! @3 W
to setup-turtles * E! y- Y9 z) U3 u5 ?6 l7 ?
set shape "person"
# D, Q2 |0 |. t% F. Zsetxy random-xcor random-ycor" o* T! D# b2 T2 W( H) B6 g8 \
set trade-record-one []
# T) P0 c+ X* u( ?+ y. e

+ q9 w( D; V0 x+ s% F: t4 {7 {% {/ ~& fset trade-record-all n-values people [(list (? + 1) 0 0)] ! n% l' @' w$ B5 w; t# c9 l# ?
! E* `, n2 r- T8 F7 A$ B2 ]. j
set trade-record-current []
. ?) j0 K7 a7 eset credibility-receive []
$ p+ W4 z: h1 J/ M0 Z; }set local-reputation 0.5: W) E3 ]# z. X# i5 T
set neighbor-total 0
* I! k/ d: G: Y' i$ r9 n) C: Zset trade-times-total 0
3 v" }; g! h' J# h7 Fset trade-money-total 00 B! R) o' x4 u9 T- d% x
set customer nobody  R8 I4 z) [% G. k8 j7 }. y: j
set credibility-all n-values people [creat-credibility]
% j, j2 n0 J% A# U# rset credibility n-values people [-1]
+ U% x) i! k( d$ n6 N0 i* yget-color1 ?( O! @, c- {- x2 o

: X' O, d( u- r$ y8 a2 K6 Wend
' h4 `9 u4 ^& w3 [. E# R
. C' R$ o# s" |. `to-report creat-credibility* ^) Q0 k; H: D
report n-values people [0.5]
! s: V: j2 y5 |end. G9 G# B' ~% [/ ~/ f  f/ z
" q! y8 P5 f4 S1 _# @( }: g5 x2 {' _
to setup-plots
) |; U9 L! e$ b, X8 q2 k' d# c: \. @2 _
set xmax 30

# N3 C* O- L9 p! q3 h1 J+ x: P/ m/ w
set ymax 1.0
& \! c' S& L4 W1 b

, j" k2 j7 x( `& h# d$ Q1 a0 w9 tclear-all-plots
7 _+ o. f* [& R2 m6 ^* S. m

1 K" G; [- c& O% s6 {setup-plot1

+ @, N* v  j( B8 Q# N* _, m
; A; t& G( [" r) ^6 `setup-plot2

  G- z3 ?0 b6 y: b! S
/ R" x9 S4 ?( |( Zsetup-plot3
8 H6 u) U/ H" T5 H' ?7 n$ A4 _
end
% A' a* z+ x. x/ }( U. N  f5 H) k, b1 Z2 G" ?
;;run time procedures1 h7 L6 ^+ f$ S
" D  R; O7 t, N4 [
to go
9 R; V' Y. s! J6 j; C, j5 k) v! L4 T3 Y. I; g0 p5 G! u4 _" F4 k
ask turtles [do-business]
3 B; l- p, ^! ^) `) H4 l
end5 q" g4 B; i! q8 E9 c! e  }0 t8 J" M

. ~. M( g; f: A% Ito do-business
$ d7 |1 _. l0 g

! V6 i6 N& ?# E  X1 l- J" ~. r$ y2 }1 h6 y
rt random 360

: {  s0 ^, |/ K5 j! X! [8 i/ t) Z; L- I
fd 1
9 r# r1 `3 @. ]' }% E

' Q+ b4 [2 L! f! R0 nifelse(other turtles-here != nobody)[
7 [! }2 Y1 W3 r4 y4 n5 _6 F. a
1 j0 O) l( h1 ?2 R& Y8 o' Z
set customer one-of other turtles-here
& @. E2 j/ ?/ {
6 c4 ?" u2 S/ U: M
;; set [customer] of customer myself

. m  ?" y4 A% j# l" B, U) a. z) P3 i( w
set [trade-record-one] of self item (([who] of customer) - 1)' @9 f. C, p/ O- B  t' {
[trade-record-all]of self' X  Q1 Z4 K" \
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

5 E4 F8 j- p4 z8 @" T: v7 r6 O% U8 o+ u5 m* ]) Z
set [trade-record-one] of customer item (([who] of self) - 1)2 F* _" p# B: N# X# @) m. v! `
[trade-record-all]of customer
% Y( ?6 M! h2 I% Q5 F% f8 ^7 Z% C
& ~* y' T3 l! |' e
set [trade-record-one-len] of self length [trade-record-one] of self
) W- P( A. J  Q1 N% }0 A. W- \
+ q# a) T$ V$ c& q
set trade-record-current( list (timer) (random money-upper-limit))
' C0 W0 `* x: j1 ~

7 k5 A9 Z5 c9 x  T0 D  _$ n4 aask self [do-trust]! r) h& z+ |7 _5 Q: m/ T
;;
先求ij的信任度: K- |3 y  M1 ~1 c: l* Y" [# Z1 t
! z, r  i5 a# @0 b; e5 T
if ([trust-ok] of self)' ]# M9 X% g- O, v+ o4 d
;;
根据ij的信任度来决定是否与j进行交易[! r3 G: @4 u3 H8 W
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
) W: V$ J8 I2 ~5 k, `
& H! t9 c, n) a4 p9 {[

0 `8 N& ~  c& u$ P1 V4 p# b% v. Q: s, z- ]
5 V( D3 r1 w  B7 cdo-trade

4 @/ ?: c) g- @. T6 X( U# V; R2 m, O- I* |, V# q: K+ H
update-credibility-ijl
! ]. x! E. Y% ]

. n& f8 i5 Z$ Q1 {3 |& ]update-credibility-list4 L( B; l1 e  k& n$ B$ r

; `! L2 [# p7 f& u  u! r& r
8 C( [0 I/ t  d  Cupdate-global-reputation-list

6 t' \# H, l, ]( }* j8 C5 V: z8 u  R: c1 x7 q3 S
poll-class
# X5 Y- Y5 U0 r: Y: l- w7 [# h+ r) C8 S

) M( U1 \& c' V0 `& Oget-color
) h3 E# O2 s  g+ A' H

2 U1 i; b0 g1 \7 S# U+ W' E" V* Q]]
; t! w( L# r9 P; Z* M) y/ ]8 S& [- H( [, N7 t! B0 h) Q
;;
如果所得的信任度满足条件,则进行交易
0 ~' {4 o: B1 w- O+ o( I$ j" @3 \+ B' a/ L+ e. \
[
4 K# O( a/ s- a( U6 r

, E0 t# i; L+ |rt random 360

4 x7 w$ o& a  |$ t! f
8 e; D, x; ~# d+ t9 wfd 1

9 k( J2 @- d7 w  }- R" M3 \! b' C
: ^7 R! f5 ?" k, q]

8 M: V! h: \! K, X/ T3 m/ U0 t* W% G
* o- p; w% j1 r: J: t7 ?) E' kend
5 n0 ~7 X# d% }/ G! I

# [. K* [$ r8 hto do-trust 6 L: O0 p2 {' e2 }/ i# Y$ c  ]
set trust-ok False
7 j/ a# Y& P- \% z1 m( i) N1 J) |  B% l* {0 V$ G+ C

  X% h8 }, F: Z# Slet max-trade-times 0
3 y* K( h% n) I8 Gforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
7 q8 i8 q3 ]3 G" Z7 alet max-trade-money 00 Z# e+ H7 S- v) P1 l/ Q  ~
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]], I1 _7 }0 t' w& Q9 M6 S$ {. |
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))7 _' S# s/ C/ S7 }

% U6 b. d9 E3 u5 D! m- T) T* c
* \* k6 s8 }' d' {
get-global-proportion5 @6 e1 c1 U/ \9 y
let trust-value
4 W' y2 M! a5 V& T  W( ?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)

8 s* w( ?1 W; Z: d/ `) N' T" kif(trust-value > trade-trust-value)1 b6 _. H7 w* I1 \) Q- B; v3 B
[set trust-ok true]
8 s/ H# x# ~  W; gend
, @! _  T; b% }
8 ]7 \) B3 O' R3 [5 Wto get-global-proportion
# d* v2 b. L; o! h1 S, Cifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
7 w1 K/ V7 E9 m0 s% @$ d) z' C[set global-proportion 0]
: p4 u. A4 _& k- ~3 t. L7 a! S* ][let i 07 W7 f& F. V: [
let sum-money 07 U8 t& {$ w# U
while[ i < people]
1 `; s- Y4 W) Q+ Z$ I( u[
, B* `5 ~' @  D6 Y% ^* C2 Zif( length (item i: D+ ^  b% d: \
[trade-record-all] of customer) > 3 )

  p, L8 j) b" t( L3 u' L[
# L' S2 W9 f4 Eset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
1 W3 Y( l+ S( w  U) B]
$ Z) l9 F6 e' K* B% X, w]* [# J( m& P) U& w4 k) }
let j 04 m$ {1 ]$ |0 ^7 g
let note 0( k% m6 b% R6 k! A$ q
while[ j < people]  G- V$ J; e2 [0 `; \* `
[2 [0 P& q! o' s# s, M
if( length (item i/ G0 f) H( E) `% F, J! s8 L
[trade-record-all] of customer) > 3 )
; x  v+ M) `$ o/ [+ B" u
[
* j# D$ ~3 d" ~: A8 b" e; Uifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
4 ~+ X  r6 ?  A* c2 m2 V* M[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]5 u4 @, ^1 e- |1 x  T& }
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
( e; \' U/ @) q! G0 ?/ H% e]
" H' K7 z- n' E# K2 R0 _/ o0 J]
" Q) b' z4 S* l5 n2 a' lset global-proportion note, \6 Z2 l' A# ]" b& i) Z
]
! m+ S& z8 o$ u' i1 Wend
1 P% @* W6 Y9 l( J, a
; o9 s  @1 ^6 M% P5 W# P" X; cto do-trade7 O. ~3 [) o  x- D' C( T
;;
这个过程实际上是给双方作出评价的过程
: X& `  B) O3 e9 K& vset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价0 N+ c  R. v, F
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价" x( J! C' ?/ c1 F, G
set trade-record-current lput(timer) trade-record-current
2 y5 j! V3 D1 V  L; V" |;;
评价时间
/ N; X1 n* d  l0 e/ Wask myself [* r' }8 [2 s6 l$ F- r
update-local-reputation) ^, |7 j' Q6 k1 \' W1 ?) Y2 g
set trade-record-current lput([local-reputation] of myself) trade-record-current+ B6 A0 }8 _9 H( h6 j, ?& G
]* u0 T2 m4 d. W9 J, X5 ^
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
; l. c; v6 u! v1 U;;
将此次交易的记录加入到trade-record-one
: p7 P- }4 W" E" W1 I0 b1 ?1 U; Gset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
% j% a' ^& u- {' l, y8 hlet note (item 2 trade-record-current )( B( b8 k& m0 v2 F3 {+ \1 ^
set trade-record-current
: C  g- }& A0 U+ C6 I% @(replace-item 2 trade-record-current (item 3 trade-record-current))
! C- W% ]- V) X3 y9 M
set trade-record-current
' Z) I, s5 I6 z( n2 N(replace-item 3 trade-record-current note)1 j: z# c0 ]& Y. p* J" V. a
0 c& w/ M0 L+ Q6 w" W6 x

+ B6 D5 z: ~8 n  W- d; ?) vask customer [) c8 g1 c' c0 `/ @7 P
update-local-reputation
4 D. h6 D  p" @0 V! [set trade-record-current
8 G/ T$ j. d4 j8 c& ^(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

2 v# ^% i+ |2 P% U6 z- H]9 F/ y: G# [( B0 ]' Z5 x
) J! Y. z0 l) Z6 ^2 B

. b) V- L; h/ u" gset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
& J3 A* k" c: ?* m, r) N

1 z  W. T& X/ F6 u: }. Hset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
% C* K7 I5 j0 b; `1 T( ^6 B;;
将此次交易的记录加入到customertrade-record-all
8 k, e$ e/ o5 p* @end# S# K8 p  D' b' u! ^
' g8 c& H5 u: j  _& Q
to update-local-reputation' o) k. d8 {( [3 g+ ]' l
set [trade-record-one-len] of myself length [trade-record-one] of myself6 x- a& p& {$ g4 w6 R- P5 s

$ ~; g2 D! w! p3 B7 N1 _, z" b
2 l+ [- S  o& {/ L7 l% @;;if [trade-record-one-len] of myself > 3
: T( I" m+ L% Z* L  y: R; S+ L! n& B
update-neighbor-total3 i0 r+ l  b4 ]! {5 S
;;
更新邻居节点的数目,在此进行+ @8 x% c( y) X5 F$ h1 X0 W. H
let i 3
. S' R! X  [9 m4 z- i. r6 Plet sum-time 0, ?3 w$ t$ P: X& f9 O, n$ J6 |
while[i < [trade-record-one-len] of myself]
( v, E5 V; S5 t7 ^# V[8 e) |$ F& J- q
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )1 u# y) C: l: x" g3 h
set i
( w; z. N1 G& M4 m. @7 x& ^) J3 X( i + 1)
8 t9 F  L* k8 A9 N1 U: I5 r
], ]5 B% ~; U1 r% Y( \7 Q- [  t# z
let j 3
8 d; c' e4 Q1 z& Llet sum-money 0
9 f0 v- y5 y. k4 A" Kwhile[j < [trade-record-one-len] of myself]: p: o: X' x- Q
[
/ ~) Y& ~& `& G8 C6 b+ b9 K0 n7 pset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
; l; }. [' y& G- ]0 h0 o" ~& Y1 ]set j- Q3 _( [2 p! U" S$ W
( j + 1)

" E2 k# z. ]" Q8 t- u* [! P1 O1 d+ t]
- R$ b. b8 Q# Y6 F3 clet k 3
6 F) r: N* X& ]1 W& [let power 0
9 i2 H& M9 o6 B% X1 v9 p7 blet local 0: d' o& ?- R& I5 s
while [k <[trade-record-one-len] of myself]
: A, |1 J9 R2 l& n0 K1 k[
" ^; Y* {" Q1 K. Wset 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)
& u  B/ z% m. X0 c# I1 dset k (k + 1)
  e/ R1 d8 ]9 K# D# e$ w]
( o& K* T- u% a8 K$ Cset [local-reputation] of myself (local)
% a7 N. c0 {" Eend
2 j! g  ^, u7 n1 w1 Y, X
0 X! O) L* a4 q3 b8 E% W0 Bto update-neighbor-total1 Q% s1 i, j( k* ?

& p% j% r2 w9 P" qif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
: U& y$ e6 F. p  z! l& _/ s/ X7 B  E. W' j$ o
# s* v) U/ Q5 E. X& b. I  y
end
5 Z8 o9 s$ m) Y" _$ E6 \" t" a7 \! ]( E$ h
to update-credibility-ijl 4 d% a8 g- `0 w1 T
2 k5 w4 E8 D! V5 v- i% o# A
;;
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 A, z" M) ?5 u0 q! }+ d5 g! W5 g
let l 0: Y$ r/ A( d3 n! E3 A. `
while[ l < people ]/ Q% m5 s2 h( S7 |! @, y6 Y
;;
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; J0 V6 v" I- q( r1 K: d5 ]
[
8 f' f9 D0 Z5 Alet trade-record-one-j-l-len length item l ([trade-record-all] of customer)" K  B/ w( f' W& l; ?" e& Q
if (trade-record-one-j-l-len > 3)9 Q% I. n( V! Z
[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" v$ X# r/ P# D. D
let i 3- G/ n# g* D2 T
let sum-time 0
! h9 Q) B  u" m/ s: J+ lwhile[i < trade-record-one-len]- f; F( B3 ^; F4 _
[* e* D3 y- e. q5 S, ?( H4 Q! _
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
4 @5 w! I& P8 }5 q  Hset i
3 s/ K/ b  x6 M. K( i + 1)

2 h8 g/ q7 M0 n6 N% k( q]
6 y. Y; O8 y( x$ blet credibility-i-j-l 0& ^9 e" G6 J+ A" Y6 u) b
;;i
评价(jjl的评价)
% Y' M9 ^( N2 n8 o# ylet j 3
4 z3 E4 j0 r" {# \let k 4
, W( F6 K+ {; `" O  D0 s" K9 X" ywhile[j < trade-record-one-len]
! P+ C: N0 [( _* u/ A4 x! Q[
, V# z5 ?) a+ b) l; C9 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
( g8 ]7 G( g" ~6 a# M' A+ X% Oset 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)1 M4 y% [' u; d5 [2 j
set j* y. `# U8 ?% e' B: W4 {: w! u. L, T
( j + 1)

) y" u1 t0 t3 ^: g$ z8 P# b: q]5 P0 }" i! E& a& W
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 ))6 X2 ~9 F0 L# n- f' i4 b! h
* U. L$ s7 w% k. }2 u  E4 X% V

7 L9 x( r% t" }+ Glet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)), E! S: ~0 k4 G; d
;;
及时更新il的评价质量的评价( ]) H9 E3 ?4 _: u7 e9 f) E
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]+ v- s; b" E& d
set l (l + 1); I# d' b9 j, X
]( |3 R" g+ r; n
end+ H) C. j: p6 U1 Q

0 P- v4 o/ i+ R" pto update-credibility-list- ~* G( L- H+ z+ O
let i 0
" f7 O& l. S6 K+ n' {6 L/ v' [while[i < people]
: v; R& ]& `& t[" n$ o5 f/ g7 i- H
let j 08 h& @0 e: Z# K2 U- @4 N' A
let note 06 R/ T2 j( o6 X5 ~5 I0 L4 B# S
let k 0
2 o& v2 H3 f& [/ D7 Y;;
计作出过评价的邻居节点的数目
1 H5 D; |# m5 @( f0 w$ j% W8 ywhile[j < people]5 ^/ o' h7 P2 b" B6 ]# j5 H7 v
[
% H: x" g0 |8 ]; i# ]1 Jif (item j( [credibility] of turtle (i + 1)) != -1)
( m4 G6 }5 i7 A" N/ j;;
判断是否给本turtle的评价质量做出过评价的节点
) ^6 V0 V1 c7 G' H/ u7 b[set note (note + item j ([credibility]of turtle (i + 1)))
. g! n* r7 [# ~& |9 @# ^4 ?;;*(exp (-(people - 2)))/(people - 2))]
8 I9 o9 W6 j  {' G9 B( J2 t
set k (k + 1)
: S& Q3 U* ?0 @: V% h- b]
7 ~9 O, |" Z. t  S) E/ bset j (j + 1)
! w$ P0 j9 B! g# J6 w: H% M9 J]& H4 q: W2 U* i2 n$ t
set note (note *(exp (- (1 / k)))/ k)+ C# L% z4 y: L
set credibility-list (replace-item i credibility-list note)
0 p: E8 D/ [/ Y+ I' eset i (i + 1)
& J+ q  {, M! X, u0 M5 z$ N]
, \6 c2 r; ?( N9 J% Qend
& L. C1 d5 N" v; T; V+ d/ R
6 }* {" u# I* E* U  O1 ~2 m& gto update-global-reputation-list
* o9 f, H) E" flet j 07 U7 h6 r* w. a$ U0 @
while[j < people]. F# A1 f' v. m8 ^* C
[
& q5 l4 l6 I. ~* X' d+ i+ llet new 0
8 B5 ~4 [3 @8 @3 O5 ]$ e" R8 l9 U;;
暂存新的一个全局声誉8 }) \0 n5 f' q( S, D" z
let i 0, p/ o& d& b. y! q* \# b2 b
let sum-money 0
8 V  b6 d# N1 ^, I" Blet credibility-money 0) w' S4 k' k5 K, S, G
while [i < people]
' u" m5 r$ d; ~# M[4 j, |2 v1 C/ U) v
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
$ X% F* c  }# [. x4 m, V, u4 o* [set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))" Q5 }1 ^/ d( Z! c0 D
set i (i + 1)
" U! f7 w; T' g/ _]
3 V  \* l" Y: W; Y, f6 m$ Ylet k 02 o0 h3 T( D# `# j
let new1 0
5 u6 _7 J2 p7 f/ R0 awhile [k < people]
/ f* Y: w$ w) g* E# J. O) @[
7 r# I/ |! o3 W0 K+ ^( L3 Cset 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)
' p) v! w5 W# \3 a1 Rset k (k + 1)- I4 v) L5 N7 A# j  v3 p$ t& j# B9 L
]; Y8 \& P0 q8 E! {7 G
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
$ |4 {6 W$ u) H/ q& Kset global-reputation-list (replace-item j global-reputation-list new)- n1 g: N0 y5 }$ a& o2 c. Y( ?2 p
set j (j + 1)
, }0 B- J7 J* r0 D1 F]+ i8 R# k0 T1 ^% C6 w# {3 [
end
6 F$ D- K0 X6 d0 j5 F0 c$ M" c0 U9 }9 }0 Q% q) x
( _' p4 Z; l4 d# ~# X) a

. t' e+ J0 V0 dto get-color" A9 g8 U( z" n, H

+ \  D" S. `0 k+ E$ E5 |set color blue
# u2 E* G2 V0 Z+ z3 Q
end
& Q- U0 o1 L$ s/ M  U% U) r+ a+ d" ]7 Q6 r- z3 |+ V
to poll-class( v4 _% B' Q) s  _, r
end
& y) P# Y$ V0 o$ P7 }! {" X, t. G: ^& V- [' L; _+ B) {0 a. S. n
to setup-plot1
. o8 k8 n% Y6 h# D- X
1 e: k2 l! S" e7 Q2 d# I) Lset-current-plot "Trends-of-Local-reputation"
8 A8 m( G& A, }$ m
( x5 a2 o# X  f: J4 i
set-plot-x-range 0 xmax
2 p2 p- e2 }$ Y

& _' ], d- s0 }8 ?8 x6 Z4 dset-plot-y-range 0.0 ymax

* y. `3 ]) z  k; b5 ^# {7 }end  p, {, k& M2 h; f+ W6 T( J

: A  R  n8 a6 O8 T- O' P% w% o4 cto setup-plot2/ ]+ |' V' Z+ w; J& l) `) ^/ n

, U- o8 U9 n: m+ Y. o1 Dset-current-plot "Trends-of-global-reputation"
1 ~2 `& H# Q# q$ K0 ]

1 a- u9 H/ u* E3 rset-plot-x-range 0 xmax
! u: g3 K# T6 r- y8 ~8 K6 O

7 c# A& a& M* s# L; B1 P6 Eset-plot-y-range 0.0 ymax

0 J/ W8 c) j: ?end) ]" q! M; A( x* ^* D

+ C" P  o  p* [. Z* t' e  Mto setup-plot3
" Y% U/ z+ k# q6 O, O2 ~+ [- L# u! q5 S/ o
set-current-plot "Trends-of-credibility"
. {( f1 C7 ~! X2 I% l& F
/ f7 T/ O0 l+ n$ A! p
set-plot-x-range 0 xmax

9 h" c: J- t0 |, u- p! z; m# O; ^  |( i6 t2 H
set-plot-y-range 0.0 ymax
3 b; R0 w: \- _' P7 `. D
end
3 P1 d! t/ N. F. {9 Z! C# {/ S
/ o& H1 ]3 K$ b/ E+ wto do-plots
4 E3 a: n- ^7 Y6 |set-current-plot "Trends-of-Local-reputation"  w3 y1 a# ~6 l
set-current-plot-pen "Honest service"
9 Z1 O7 X; t& ~4 P8 k3 q( hend# g. \; P9 z+ x- b/ i9 s

) G$ k# j9 t& B) [& g, D- [6 {/ h* 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.
, w! ?7 r+ g6 j
& D$ O5 ]  r* P0 g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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