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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:" m& E7 D1 A- n& w/ i6 B8 j
to do-business & O% f2 R7 t! w4 n' W) Y' ^
rt random 360' \' g0 F$ Y/ o, \7 f8 ?
fd 12 f: d, L- ~/ E% S
ifelse(other turtles-here != nobody)[% z9 @) t' g1 v
   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.
2 l' N8 h6 Y7 @+ [0 Y9 p/ H   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
' ?' |6 b/ S# l3 l* ?   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
. v. U5 ]) w/ Y1 w* A2 o# k   set [trade-record-one-len] of self length [trade-record-one] of self: p3 j5 ]9 R( k! o( `5 x) L% }) q# r2 `
   set trade-record-current( list (timer) (random money-upper-limit))
- |9 J* C2 y( N' V/ p& t. _1 P/ p& m: b. b: b
问题的提示如下:
6 L0 c+ R6 A, F+ [/ d' K. t# M, i( l' E
error while turtle 50 running OF in procedure DO-BUSINESS
. H: l" b  J( y  called by procedure GO
2 x; \% ]3 m& ?1 q. NOF expected input to be a turtle agentset or turtle but got NOBODY instead.+ G# ]; K$ W( W) L% x- A/ ?5 m
(halted running of go). ~) x2 e' ^% r! Y+ x7 K

" f. L& |& k+ P8 u* n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~~. _$ ]/ U/ y6 Y3 B1 V" Z
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. C+ C- T# K+ x4 z6 Wglobals[5 _, H( d1 P5 y8 x8 V
xmax% R5 v& |; n8 Y5 {
ymax
% |5 N3 v: ?8 g  d* I: Kglobal-reputation-list
& ]1 P& \- Q! P
' O+ \4 n* _% X: |5 o$ W;;
每一个turtle的全局声誉都存在此LIST
5 R" E/ q3 {4 _1 s/ |1 v* Acredibility-list
0 G3 a, _7 `7 G0 R9 A9 [% A9 u/ c;;
每一个turtle的评价可信度: s, ~6 W& u! A) G0 n' K, Z
honest-service* U2 x$ j, C1 g) B
unhonest-service
, Q3 }$ L( q- {% hoscillation
5 Q6 H! X' @! w( Z8 i* S- f  T% g  b0 q; vrand-dynamic+ ?% `6 z( W+ L$ t
]
$ S( n2 N$ T. K+ W7 s. v# k6 i0 Z5 d/ ?6 q, _8 g1 ^% B
turtles-own[
9 b7 W" A; C, k$ D/ vtrade-record-all0 o2 M: D9 q: T; @$ j* b
;;a list of lists,
trade-record-one组成
- V( S' g' G" D, @trade-record-one
% m& y% T  x$ [9 m8 L- ];;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录3 y# J! B! i+ I* \: ]9 E8 U

" v) V9 e  t% d9 p;;[
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]]' ~* Q2 Q# R3 {% ?) l, c* 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]
, F9 l5 \# `( F6 e, x4 T  `9 ecredibility-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
# V9 t6 E; ?4 H# jneighbor-total- H5 S  n) [  Q$ ~0 h3 T
;;
记录该turtle的邻居节点的数目7 }# z8 |" @7 Q
trade-time1 U4 f2 P% b0 J
;;
当前发生交易的turtle的交易时间
; `0 q" J* t% S4 K, {  xappraise-give
# q/ w8 g9 g' e: [% f;;
当前发生交易时给出的评价
3 [' }0 v  m" D5 p* I' _appraise-receive
; f: L0 [* r+ h! w. p' S; |;;
当前发生交易时收到的评价; o1 q# {7 Q/ L3 u, I7 H# E5 D* L
appraise-time
( y; d: G4 A; \5 f! v8 ?  q0 Q& V;;
当前发生交易时的评价时间/ h! u0 o( l* b3 P. [$ h- X
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
: e* w0 L) W( a0 Z5 qtrade-times-total
7 e. e# ~0 Z. e;;
与当前turtle的交易总次数5 U9 g  A! f% y1 ^$ N% x, d: c
trade-money-total7 \% r( ?$ F0 ^  U$ [
;;
与当前turtle的交易总金额
4 g2 Y+ b+ P6 D, x, e  Llocal-reputation
; C/ }: n9 G1 c, ?: b9 Oglobal-reputation9 b2 Y$ j/ z  P- ^
credibility+ ^, f9 Z8 m2 C  y" c( m' ~
;;
评价可信度,每次交易后都需要更新. j2 F# y  a$ V" W4 U8 I9 a
credibility-all9 j& r) B$ ~, ?% Z' M
;;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 `3 E4 g2 n4 A) R7 [0 e
% Y7 L0 I( K9 W
;;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
3 ?9 s& }  @/ X) H- L! u1 g' Dcredibility-one
: B6 T3 ~) g  k/ e- m3 C6 h7 s;;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' j4 M4 m" M+ r; v6 T- t
global-proportion
) G7 x) ?7 ]; ?+ v- G* ncustomer& F7 R9 P  V3 E- P( n" g/ b8 I
customer-no
& J; n0 {4 [  z# O. G: l2 g8 ctrust-ok
& W3 @% T5 ]3 W: qtrade-record-one-len;;trade-record-one的长度4 u8 @4 l1 m( L2 @
]
- j" k4 M$ s! W' g' x4 W# |7 E0 x0 p: J9 z( [# z! J. K% C
;;setup procedure. g  X+ @3 H4 s1 L  R1 i0 l

' x) s- m+ t. a( d& V% H  \to setup
, o2 N1 l- P6 D( S& `8 `4 m
* n! G: L9 L. K. M1 j# Rca

; g$ g  I" G$ t: N8 l6 u2 _0 X( J& {, e( ~
initialize-settings
. _* l, T5 V; M5 H* e" `
; W( {4 m1 f% k- r2 v' @
crt people [setup-turtles]
7 E4 Q8 I3 Q( y; K; L: y6 l

5 v" E. H- F) lreset-timer

% D3 J1 N# k$ n& H7 k+ B' \6 N& O
poll-class

9 {' F' p3 i* _% e
* ?. {4 e- b5 B. osetup-plots

* D* M! h  S5 e! T/ Q- l8 K
" Q3 x6 I: s5 m) x9 ddo-plots

8 v  v3 j, V: V! bend1 C* _5 Q; g" H0 W6 \1 y4 s5 g
3 |( L0 c) n' {
to initialize-settings: S* s3 m9 E0 z( J/ g
( B: I- h6 S! X4 J* B! m3 x7 {8 d
set global-reputation-list []
, e, B( |# u& X: K3 P4 k
+ q/ i8 Z4 g1 @; C
set credibility-list n-values people [0.5]
( _: z7 y% l) M1 P. ?( X

- |* S7 u% C! L# ]3 cset honest-service 0
. `8 ^1 ?; U% Z9 S
; {5 c$ ~( b; {& Z
set unhonest-service 0
" m+ b1 A' h' T- g- e, A
# h" O  o& @6 K; X
set oscillation 0

+ \, h! X0 z3 F2 s; F# t  M  d! }: F0 Y( O4 b
set rand-dynamic 0

# P& y' E- m7 K  Aend! L/ F/ ?" k3 C# p+ g
, w0 [6 a" A- ^+ I3 ]; L/ c
to setup-turtles 6 q1 U- E5 a% t# D7 O
set shape "person"
5 \6 ?3 U# }2 @setxy random-xcor random-ycor/ {0 H! P/ {$ z+ n- o* ~  S' s# |
set trade-record-one []
. f5 B! d) L5 I3 U8 T
0 X) u! F0 `: A1 u% {2 f
set trade-record-all n-values people [(list (? + 1) 0 0)]
! {; |, @3 S9 V

  J$ W+ P$ d3 e4 P, v7 V! o2 s1 mset trade-record-current []
+ m" O4 W8 a& pset credibility-receive []
$ X8 H! R$ E  E4 ]& B7 _. Jset local-reputation 0.5
# {/ P0 ~( N9 v" ]set neighbor-total 02 b  C5 n0 n/ I9 |' X
set trade-times-total 0
3 z# K. x1 b+ A+ @" Gset trade-money-total 05 z4 O/ E  U. ~  ^1 n- e  `
set customer nobody
- @) G. B/ R* h4 Y  V7 Pset credibility-all n-values people [creat-credibility]
7 u) f  d. U! ?- z: Y+ W( dset credibility n-values people [-1]0 D0 J. z4 ?6 p- L
get-color1 K! p" D/ h+ D8 N
9 w& l; b4 \5 Q1 K" ?
end* x8 w- \1 x! f, j; b

' |# u- }! o+ @+ I) C* u( Nto-report creat-credibility
6 L9 |) V0 Y9 U+ U. j- Breport n-values people [0.5]& r- Z2 s# H1 t# e* e
end5 C: I  w( H; p/ F  v+ Y
% |) C8 n4 |7 ?
to setup-plots
& h( w' h8 B  n: X: |) `4 z& ?
$ f. w: E$ `2 T9 G% V. D2 a8 tset xmax 30

# Z7 e" \3 `8 ]
$ w" ?* s% Q; L7 D2 G1 G% l( Mset ymax 1.0

  u  ~1 [: z( W1 o5 s1 b- W
, n! s& G3 a0 L& N* ~clear-all-plots
- X5 {" J# o- x  [5 _! m2 {: g

5 H& G4 s# n' X4 m. V. }8 P5 p! q! psetup-plot1
6 u7 Z1 L* _0 X# {
* N- q0 q4 H! \
setup-plot2

2 ~2 q2 V% V7 \- O7 @* b4 Z  b2 t; E! o- q
setup-plot3
) M% H* T  |2 q
end
8 n4 Q5 B' |# E" C) m) w7 s+ @4 l& Y6 [1 Z6 M! i- t, w" f5 Q
;;run time procedures, R, h' r# ^  L; u( ?

! D/ Y3 }. v7 V$ [% a& n4 v* S3 T# ~to go
7 n+ m5 m5 O  ]' O
1 \- Q! w* ?) S: L0 Task turtles [do-business]
) R  Z0 w' d$ ]& w; m
end" y* d2 O$ h0 J& m
% W  r# p) `( W  n2 ?8 |# F( T. y
to do-business
5 I$ M+ U0 [; i; z" b

  n: \8 ^1 [0 \
0 \, A9 X% a# S- m, frt random 360

/ a% x$ U( q4 H2 \2 m5 g0 p# V3 g: S9 V) {
fd 1
: o+ p$ i- l8 R5 J$ H
/ K6 t' u# q+ p* Z  ?- [2 W
ifelse(other turtles-here != nobody)[
* [* b4 H6 f  e  o  x. u) M# t
: E: i/ i7 M7 E5 a& U
set customer one-of other turtles-here

  |' Y$ w* ]( s. P$ }7 i3 c! P6 X% k9 O
;; set [customer] of customer myself

: ?9 ]6 c" d' P3 s# N
6 I* Y9 f1 V* |  ^3 Qset [trade-record-one] of self item (([who] of customer) - 1)
' S5 U$ L6 E" k5 J[trade-record-all]of self. C+ U7 z  [9 h. x( e2 ~# B$ L2 j
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
  b; @$ ~$ k; s

3 v, b/ T& }2 }set [trade-record-one] of customer item (([who] of self) - 1)$ |% X- Y( _8 [
[trade-record-all]of customer
3 M1 V; f9 [- ~, {# x/ N

; g. f0 X# K$ K* ~set [trade-record-one-len] of self length [trade-record-one] of self
4 s2 K$ Q0 L7 D/ `% j& o

0 h$ S9 n1 k) cset trade-record-current( list (timer) (random money-upper-limit))

4 d: t$ U; K0 v' h/ J3 C
5 A% L' g8 C, m! l: m* G2 D; \ask self [do-trust]
$ T) O, F' _/ L; L6 q. @0 x9 J3 B" {& K;;
先求ij的信任度
8 y/ E' J" {  h7 N) y
( n# X4 X6 v# z6 ?: |1 f# D6 `% @if ([trust-ok] of self)
: y+ Y: {2 T8 r2 U$ ]7 E; s;;
根据ij的信任度来决定是否与j进行交易[& g$ \0 \$ v/ H
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself" D, [, M6 O& J7 G5 o0 [

2 Z, [  I9 B$ @. u[

' [* ?) O& M6 b" z" H4 r
- ]( F8 v& Q$ s6 fdo-trade

) i: _- g& p/ i* H4 Z
/ F* j$ a/ y! v0 g3 [8 Tupdate-credibility-ijl
2 ?& m9 T/ Q% Y4 _& p
1 V4 k7 b7 y$ `2 P& u' R. p( j  J
update-credibility-list4 @) K6 Q( @5 F$ v

; F2 @. @4 o' g7 n! a3 v9 T
3 \( b) D' @2 D! D  fupdate-global-reputation-list
; y) a- |  \- l# H9 h: k: D" C% ^
( I7 Q& @2 l" ~5 c6 N% M2 I
poll-class

: l) {4 C7 P8 Q2 q' K* n: [7 y! i
3 l/ R  o& L  }get-color
5 a. S4 B% C6 D; S5 l0 d
9 E, q, q9 ?# m! G( j. R" S
]]$ r; w9 u2 @$ Q+ S3 T

  u; S, c: w- O' Y;;
如果所得的信任度满足条件,则进行交易% C. j; V1 h2 d* `8 o9 W- j

9 n7 R8 e: V. h( `' t0 U' y0 V& q[

# @. F; X0 u$ L/ p& X2 m- M1 i1 ]5 L8 k) `' b8 @
rt random 360
) ^3 U# ]6 z) T0 M3 M
6 W$ b. `3 p! X( R
fd 1

" w! l, ?7 r5 ~( D
) @4 C9 ~+ L3 J]

4 e( s3 W; s+ B+ w+ N$ b4 l  S1 W
end
# `) U8 C  t; x  x
2 m& l/ E" ~4 j: K. v
to do-trust
* {" m8 o; C7 D) M7 }" R; X  I# Hset trust-ok False4 {# u2 N2 ~* n# `* l
9 A0 _5 [1 Z& x% l- N7 e# L
: C3 ^( }+ `  Q2 F# j$ y" \! G9 B
let max-trade-times 0
4 b4 P. c& }7 c. f7 ^; X! f) Oforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
! s, \* i, u! c! O: glet max-trade-money 0
5 X! ]" x% l* f. k4 d4 _) Eforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]; B6 r3 q5 y# c$ q" T; F" f5 A
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
: T% Y: x' _5 E+ ?" A% @2 b0 a
3 Z* M- K" O, l# R% [2 G
1 P. O, f( E& Y$ K- v
get-global-proportion8 L' F+ x  [3 n
let trust-value
  M" [6 F# v1 h" Z! @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)
: V' E1 `5 ?# V- T. O' v- j! n
if(trust-value > trade-trust-value)
7 g' H: L$ [3 {8 _' x% u[set trust-ok true]
' [8 c# Z. Q* L( `) vend4 E. o8 ~7 y- `4 R; q* d: T% A

9 V' f* m" ^; k1 F/ m$ Yto get-global-proportion
! b6 w7 S( G6 kifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3): A& A1 M& m4 I7 B* n
[set global-proportion 0]
* L9 N  W5 U6 A4 t6 H[let i 0" A& {. \% R2 J* d# k* A' u
let sum-money 0
* G# g( p- [6 W- h8 g$ z( o: [; ?while[ i < people]( ]9 l" J- n# V" X! o6 a
[
( V1 D4 |* u: ~4 d- {8 V) H; oif( length (item i" z" Q- p0 ^+ z. T
[trade-record-all] of customer) > 3 )
' a. i8 L4 {- {1 l
[* {: Q& H% C7 U# G
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))+ N, N+ B9 F, B$ E5 E6 a
]3 `1 U& w: C7 j
]
$ t% t) C5 x- L0 U2 L! ~% e! B7 L1 ylet j 03 G" c) q8 _7 S$ n" J0 A2 y* v
let note 0
9 _; W: E1 x& A- swhile[ j < people]
9 O- k- x7 C% B3 `+ {0 @# [6 p  G0 U8 G/ \[3 E0 c, Z+ g6 ]5 @
if( length (item i
2 |+ M$ L* O( K3 T[trade-record-all] of customer) > 3 )

; k. o/ A* W/ e) b- }) o8 _[7 O: D4 F7 h$ a+ v+ T1 g
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
( C: K4 M. A9 A- i[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
4 I+ B$ j4 C) G5 y! X: a+ u[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
0 M/ \( h: H2 Z# k, |" ]]0 A4 F3 k! X9 f' _- E6 T9 O$ V  N
]) V' L$ ]* i# u
set global-proportion note. v: g+ [. Q2 `* V8 L
]8 c4 P: n, m: F2 Z$ j  m, @
end: q8 D; p$ K+ E: m% y
* i6 s, z4 }  A0 ]4 l" k
to do-trade& u) {; x( g" f9 W
;;
这个过程实际上是给双方作出评价的过程
! G* S* F: c2 M! Wset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
0 k6 k! ^. |  G& L/ @* Z/ rset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价% a  q, k; K% n& Y% b3 Q# c
set trade-record-current lput(timer) trade-record-current
& ^  P) O; r% y: t, ?7 O- d;;
评价时间
6 h; Z; l+ u) {4 M4 u. e7 z( fask myself [/ v9 ^) B. e3 f" k
update-local-reputation
3 i: A. N2 {( N1 Y  z2 A3 Eset trade-record-current lput([local-reputation] of myself) trade-record-current2 \% W6 l# b: N: b% X
]
5 o/ \) u& x6 v7 Hset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
! ^9 E/ w4 S/ z+ W;;
将此次交易的记录加入到trade-record-one% C7 N. @' k" ~$ ^  o2 S
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself). e# l3 s8 c4 I# @, l8 U
let note (item 2 trade-record-current )
/ b1 g4 H% P$ \set trade-record-current
3 _5 g. U& Z/ h7 s6 X9 d$ ?# h(replace-item 2 trade-record-current (item 3 trade-record-current))

$ J. |4 H! J+ i* S! `/ }) f! L! ?set trade-record-current# {6 }$ g4 d8 q3 @7 ]
(replace-item 3 trade-record-current note)
2 m  ?, P/ w5 [/ E$ H9 J. D+ y) [
' U; [2 B/ k7 h6 o% C% e" s/ }- ]

+ W/ Y  n, ?- i5 sask customer [
. j- R1 S2 r, \6 p' `$ L# zupdate-local-reputation. B4 X. C8 ?& }1 w: B5 r
set trade-record-current
% s# p' j* T* v5 K5 o8 Z+ v" M(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

$ T; j& }% D: g/ ^]
1 T+ \' u/ T0 }3 k& D3 t) h' s6 f* n5 z' J
+ l7 r/ r; j5 n/ u! N- P
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
& E; r4 C9 w+ l5 W! H

9 |# B. h/ i) e3 j5 H( Uset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer)); a. e" n' }5 J+ D8 O& ]2 H! W; U  |. }
;;
将此次交易的记录加入到customertrade-record-all
. K, z0 e. L/ }; Dend5 n. @" c; l: v1 i/ ?' g2 j. ~+ a

1 r! D" v% }; e# wto update-local-reputation$ g. r& _: \1 x" g1 X# j* g
set [trade-record-one-len] of myself length [trade-record-one] of myself+ B, C1 \; v2 i% @$ G- @' C1 k- n
. B* w9 F; B% G2 ^. {& O6 a

# M/ F! e: C# I! |$ ~, H;;if [trade-record-one-len] of myself > 3

* z( V: g* }" t& |) K2 S* ]update-neighbor-total7 P2 B; n* K$ |; k+ d
;;
更新邻居节点的数目,在此进行' T: b' U- l0 P, n! q, f5 ^: B
let i 3
- U0 i  a6 c$ v( [8 B6 clet sum-time 03 p8 n0 o, _3 `$ Z: d4 ?
while[i < [trade-record-one-len] of myself]
- X- a( @0 m( @[
5 ]& K# U# l& O4 ~+ Jset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
* g9 ]- \& o/ m9 v& K% y( A) i( Fset i
0 N; ]' K2 V) n2 L( i + 1)
$ `9 K4 K  Z1 Y( t- Q8 }. d3 H
]
7 g# @; M( w+ Z# olet j 3, K/ y: Z6 C* {* N1 u: K9 m; H
let sum-money 0
  o+ b' [7 o6 U1 y0 Q% U. Qwhile[j < [trade-record-one-len] of myself]
- u/ |6 g, {9 b- C( _3 N, H  J[
2 ^- |0 D! M- r& a1 [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)/ h$ F6 m* h4 _) e! P
set j
( L. \8 `2 t  [" l! a( j + 1)
9 X0 K4 N! L" ^
]1 T1 w5 e) V3 r6 K- v% o# w
let k 3$ Z/ P! ]) p9 o  ~* r; h/ q( `
let power 0
4 u# G& Y2 j0 v8 J1 G0 x; Jlet local 0& q, ]5 y) b( k
while [k <[trade-record-one-len] of myself]
. a& x6 p0 d& t( X% ~# h; _[
1 D6 H! ~7 n2 M- w1 vset 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)
) D5 y& T/ P4 a. P. m7 Aset k (k + 1)
2 L+ L+ p  [( V  v$ k]; v1 q8 m3 |# B8 h8 o' d/ R
set [local-reputation] of myself (local)4 J/ P( q4 o7 R/ O6 L
end
+ ?: o2 a7 O- p6 R! `2 v6 j- r/ I2 r% a3 |0 O, m
to update-neighbor-total4 k. \6 I3 E+ i7 J
; H" [. D1 F. y9 I2 i
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
$ J. I! E4 ?" \# m3 I* V! |4 F% g$ u
/ p: S: ^) U- A
end/ F5 Q/ b5 B0 }; Z% X
4 e# K: U/ R8 z4 J( H% ^
to update-credibility-ijl + b- G3 h. g; e0 o, W; H! m7 v8 [

6 U; m3 @7 w1 D0 h* I7 p;;
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。: X& l7 W& j# D: O. Q& o7 ^; R
let l 0
% w1 M5 P/ l" k) s  ywhile[ l < people ]8 ~9 r. `8 f7 P$ H
;;
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 W; E3 B- l2 C( ~8 a[, z2 G9 }! {5 [/ H) s" v, G
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)" [1 o3 t2 u7 h; q
if (trade-record-one-j-l-len > 3)
  c9 ^+ I6 v( x7 _[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
5 c6 c% Q" U/ A8 klet i 3
5 x" y# T$ |; I6 @+ a& g6 n& hlet sum-time 0! Q" o" c2 b% E6 i6 i
while[i < trade-record-one-len]
3 G- j) _& _+ M$ M[
% Z0 N5 h0 h& B& n: E* cset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )+ Z% ]( f' A7 ~. p, U
set i2 Z& {0 ?  p& y0 q9 J$ ~6 H' X$ c
( i + 1)
( G; `6 z. N% L/ ^5 G
]/ ^4 p, G0 X3 X# Q% ~1 e) g& E7 `0 x
let credibility-i-j-l 0
' l% E/ ]- F3 w0 L- X/ M;;i
评价(jjl的评价)
& n( F$ ?4 ~$ E* M; Wlet j 3
( t6 p& M5 S8 |let k 4
2 }+ P, c; }; Z4 h5 t: ^# E5 @+ W# V7 Ewhile[j < trade-record-one-len]
* g$ w8 B1 i1 b+ \! s* O" @[# h# u& O- n: I/ z2 P  Z) F
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9 D+ x. |. G, P7 N7 o) Z3 g
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 c8 {6 _( T7 g- @& Oset j2 J) ?( Q8 H! `: K- V5 G) o
( j + 1)

) j0 @' z. y1 K$ i]- a; J4 v; O' V& R5 u0 y. J& H
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 ))
7 _8 V! y; w3 Y
9 M# x2 @, P; ]$ H. M7 I: O+ Z) f

5 V: M( a, f0 \, J6 e3 |let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))  }  L5 a. _  }; e& q1 G
;;
及时更新il的评价质量的评价
# ~% L0 A; D% mset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]- T+ ~1 w6 y# M
set l (l + 1)
: W# h% t; m) f; \]
2 U$ I7 `- D! B: a: Hend
* ~; j' K% Y9 E5 H5 a% j, x) ~! }; a; h* ^& H
to update-credibility-list3 P# s2 a- a: [. Q; ~5 C
let i 0) S" f  O8 s7 G% ^9 h: ?. q
while[i < people]5 f7 V: C0 g2 Y, v9 r4 b
[6 L+ |5 F- N3 O. x0 e! S$ d( a! j( f/ `
let j 0
$ M$ n' [3 t8 G9 R, u) e- \let note 0
, q  m. z) \8 Qlet k 0
/ R7 F! y, x1 M;;
计作出过评价的邻居节点的数目
" J/ R" {4 C, G/ I  w0 G1 Kwhile[j < people]6 d" R, G# m6 J4 f& j. S
[% U5 K$ m% {. p8 m; I2 T
if (item j( [credibility] of turtle (i + 1)) != -1)+ k. L! c% h5 B+ `
;;
判断是否给本turtle的评价质量做出过评价的节点/ ~& O, C6 v7 w3 Z) q6 j- v, p% z
[set note (note + item j ([credibility]of turtle (i + 1)))
$ v( e2 i( ^8 a% P;;*(exp (-(people - 2)))/(people - 2))]

) X9 M' a8 `. Mset k (k + 1)
# P& g- ?3 O' ]. y]1 d+ R5 w" G% k
set j (j + 1)
4 U8 L7 c% z: H& L/ r. ~! D]
9 X8 g7 f  C3 Q4 hset note (note *(exp (- (1 / k)))/ k)
3 a' D2 F- w( v! m( R2 y( u1 cset credibility-list (replace-item i credibility-list note)
, V( v; U4 d8 [/ z0 W) Qset i (i + 1)
6 o! C* g1 J% `9 R) l8 c1 }9 G]% p7 F4 Q) d' N" A' L) V2 ~
end6 l1 ^+ \& {; X* ^- u1 M/ Q

7 P- X$ ~8 M& X9 {7 O4 f- t7 oto update-global-reputation-list
# I& b# q& u5 d' K4 d6 L$ Klet j 0+ M9 B$ _$ y' A, h& E3 A1 }) G% w) P
while[j < people]( i0 {# O1 V  \/ {- v) `
[* j2 @( X" Y" j. p; R: _; `+ s
let new 0( m  V6 x! Y" \# W+ `$ ^, N
;;
暂存新的一个全局声誉. c) ]( v; D( ^; T% }3 v) |& D/ N
let i 0
! T1 p) ~% A2 `/ R8 X' ?let sum-money 0
+ ~; ]& H* ^* |/ z" y, P: }let credibility-money 0
% v- |3 r; @4 ~5 [  I1 t. f# j6 iwhile [i < people]( M7 S) g/ ?0 |7 z+ Q. S( y
[' _$ r/ {. i4 t
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
: V: M  [( P" Y  iset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))+ h( E* g1 V0 P0 |' Q% J7 h* E
set i (i + 1)
+ |& y8 s: y* M7 D]
) U  I8 d: L) J0 w4 V  T2 y$ }let k 0
. x3 t9 |, w; X$ x# Rlet new1 0
$ w4 m) R& ~& W8 R8 @8 ^while [k < people]
5 |7 B# \( g- v  J* b4 N1 ^6 J2 C[3 d3 F8 _( j/ S! l% }% P5 i' v, E
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)9 H$ R; K/ O( f: s: |. J
set k (k + 1)
+ u7 \& X) {- s/ k" }]3 ]' J) \  B) a* [
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) # v$ T6 p; r" D$ h7 O
set global-reputation-list (replace-item j global-reputation-list new)
% H; ^- ~- Z$ z  W# O9 U9 yset j (j + 1); ~. `8 _; _' V* P5 G  r! i
]- y8 Y6 g; N% h6 \6 d; h9 Q& E
end
& ?. v6 a) a7 d. g/ @
) h6 J/ @8 W9 f( h0 ^/ F# M
5 v/ w5 _! x% p! \/ K! s8 w! Z+ d8 T
to get-color$ F- Y1 K! L7 l1 X5 n

  |4 _- l  u" |+ y3 l1 Mset color blue

: y8 K7 M' K5 d1 a0 lend' l9 g: Y0 b( M( G
% z4 @) l0 j4 g) `
to poll-class
. t2 o0 [7 |6 _  `& Y9 D/ U9 o# Eend
' D+ |5 d7 l* O& d) ^/ Y( y6 n% W5 B2 T) @' D
to setup-plot1( w, H: }3 c4 G! U' c

" ?; w; Z# E; v7 rset-current-plot "Trends-of-Local-reputation"
4 \, ^6 t( C8 L; ?

" J9 y4 [2 g& cset-plot-x-range 0 xmax

6 F! ?& _4 h; B5 s- J
" Y0 B6 f2 P2 f3 k' Hset-plot-y-range 0.0 ymax

' m# [" v/ D' r1 A. B6 Y. bend/ z$ I$ f: m2 D+ ^, G5 s4 n

) B, j* W5 f  F: @to setup-plot2
8 d8 O# X( d4 U1 f' W* `4 q8 ~; q8 e+ b$ P4 S2 L$ r
set-current-plot "Trends-of-global-reputation"
( Q9 t* J4 F1 o+ c& ^

' ?0 y' T1 Q. \* P6 D+ v8 nset-plot-x-range 0 xmax

" e) U- r: R6 s/ L8 V* b/ x: x  G+ k! N* J8 }+ M7 \5 n
set-plot-y-range 0.0 ymax
' z) g5 c, R5 B+ R& m
end7 N, V5 P. n( G- Z2 m( |  Z
1 a$ [) S  T7 S2 n! C
to setup-plot3
8 M: [) o" `% i& ~0 f8 U* o& T+ l7 W( F# D
set-current-plot "Trends-of-credibility"

8 Y" V9 M3 _" U' F5 x+ q, p. m+ u. c, o1 l/ M
set-plot-x-range 0 xmax

: I- L+ S* k; a9 l
/ ^$ y$ Q( m' |$ v' lset-plot-y-range 0.0 ymax
; w- z+ k1 W9 F; l5 `7 _7 a0 x% D
end
# f7 c4 j& D5 h
% v% Q% c9 R2 m- O7 H( O7 rto do-plots6 O3 e' n& \$ ^1 }( ?) ~3 L1 `
set-current-plot "Trends-of-Local-reputation"
( \; w& f1 [9 g3 [# b. Xset-current-plot-pen "Honest service"# U6 o( X$ M; w' `8 {
end$ L8 r& _" ]  _" l- m, ?

8 e  ?* I% I3 d, Y: {" k# K[ 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( }5 ^8 M" _3 R$ G
. Z( t  P3 w3 m5 [  P1 e8 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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