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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 M# Z# ?4 h3 `+ W/ e$ `to do-business . X4 _* g. i5 f# @% ?! N: }& [3 K
rt random 360- ^+ x5 \' b& \$ d& m" |
fd 1: E" ~- O2 F+ l/ ~8 ~' z" @' m
ifelse(other turtles-here != nobody)[' j$ Z) s* Q1 ?1 R& D! H% `' m
   set customer one-of other turtles-here ;;这样一来,customer不代表了一个turtle吗?但在运行时出现了问题., d: E  g2 J2 k& y; x" @! g
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
9 A' P& p' A5 F9 |4 ~1 A0 [   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
; O7 E) @& b7 {6 K- N# G  y   set [trade-record-one-len] of self length [trade-record-one] of self
( h6 E, ~& w6 k, ?: p) ~2 q   set trade-record-current( list (timer) (random money-upper-limit))
( H. j2 C3 ^1 F. F) Y5 p1 n+ W6 {- T) q
2 q! N$ a. A/ y; p) b问题的提示如下:
1 I& O6 U7 B4 D7 e; h8 g  t. L
/ A. }" b# U% derror while turtle 50 running OF in procedure DO-BUSINESS0 R. k# j8 e. _$ E
  called by procedure GO
0 S) X( q/ Z1 b* uOF expected input to be a turtle agentset or turtle but got NOBODY instead.
" c7 i5 \' U1 H" W$ h* H( C
(halted running of go)7 l4 h3 [- U& g0 }3 S: V: y

8 p4 `/ A+ a$ L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 Z/ H, {: \) q2 R
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0 [0 c2 [! ?- ^- H
globals[
0 S% y% ]" u$ axmax
- u8 d( D) d3 `. s$ n& K4 _2 `% Z  mymax/ A$ }; {# T) U. ]  V5 J: R# q
global-reputation-list
- [( v% s5 k+ i" v) I9 d6 Q! }, h( s5 H" S# x! ?
;;
每一个turtle的全局声誉都存在此LIST  ~7 T0 w- E8 b6 O0 w& ?; L* L6 H
credibility-list0 A+ R& {  z- [$ w+ [% _; U
;;
每一个turtle的评价可信度
, c  M8 f! [. c' Q2 _$ o9 J& `honest-service
, N2 o& U! c; D- S/ L, _3 aunhonest-service
( h  l8 `7 g3 Woscillation4 @8 ^* ?/ c3 p" h: t3 }
rand-dynamic
$ r* B9 l; S7 y% I$ n]
8 D" |7 y1 j$ Y& U- G
1 A( Q1 O) b  {turtles-own[
/ d% I2 R7 @: ~6 Dtrade-record-all$ O; m1 S" `& i2 F( a
;;a list of lists,
trade-record-one组成! q* C1 N6 l: q" x- v# p
trade-record-one; h, j2 c/ a# ^: e  m! k1 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
" I/ P" P. _1 z& q! r( ?* p" e/ g7 z- Q6 Q. T" _8 v
;;[
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]]
, V; t, |4 l4 X* x: Ctrade-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]
8 I2 ]2 Z2 y+ u* e; 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
4 {, S9 |& R9 Rneighbor-total
1 p, D/ v- x9 f& [& o: I2 [;;
记录该turtle的邻居节点的数目) \! @$ V( x/ j" d5 T
trade-time
; t; G: @( L. y7 }# A;;
当前发生交易的turtle的交易时间
! n% |9 _- p3 H) L. pappraise-give) B4 }- D  r8 @3 o3 M4 M% U! w! G
;;
当前发生交易时给出的评价
* ~. U5 ]1 m; d- T( m; U& T5 ^appraise-receive& E4 V, ?# \- Y& r  b
;;
当前发生交易时收到的评价7 D% N) A" I/ W, k) t" g' ~
appraise-time
' R: T& n8 t& _* N;;
当前发生交易时的评价时间
6 _" _9 D* ^# Q# g5 V( q  V/ }local-reputation-now;;此次交易后相对于对方turtle的局部声誉+ U/ d7 a; b7 X% o0 k8 a$ p
trade-times-total
" Z. ]* A; a  W;;
与当前turtle的交易总次数7 ?8 s0 m4 w- H* F3 X/ ~. f
trade-money-total
1 b3 P  W' s  v7 _;;
与当前turtle的交易总金额
  [/ q9 J2 u, t4 Slocal-reputation
) q8 p6 I6 E; P" w3 z* Dglobal-reputation" z! w# J- `- V
credibility1 ?6 Q# G% L4 _# H2 j" q
;;
评价可信度,每次交易后都需要更新- d6 u  w, A% v4 R0 Z% g
credibility-all
' G- I& p9 u' q6 `;;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
) U0 `- m. ?  p7 `% Z- G. C  h
, @% p1 o  }3 d4 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
% g2 f: m3 @8 }9 E7 W6 g$ ~credibility-one' [. C- [4 b: d' w; {! o
;;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+ h. i. J, s. M; ^' @) Y* F7 E- t
global-proportion
! ~+ a- ^9 L/ x: Kcustomer0 ^$ C% ]" n: O* M0 P% j/ z1 }
customer-no
7 H6 C2 {! M* J7 @& ttrust-ok
$ I" A. m3 h; J# ~2 Htrade-record-one-len;;trade-record-one的长度
) I  B# h" Q6 b. V  E7 p# y& n]
! \( K, v) X: A; W- @. y% H
2 ^$ }+ u1 X* O, t7 n( y;;setup procedure1 c' d/ N! G& V9 Y  u
. j& `1 G9 }" E
to setup3 K$ A6 P5 C1 o% u- _: D
0 R7 O! W1 Y: h3 E& S9 n; F
ca
( R- ]3 w# v8 s3 ?

* k: W6 N+ M& E) C* `initialize-settings
# I' W8 g8 }, t" W, Q

$ \. M& {' V" T1 O% q" K/ q4 hcrt people [setup-turtles]
0 h! U: F" Q- X# O

6 v3 k' u1 ?" lreset-timer

3 A; i& N: v7 z) X7 g! G, i4 q7 m- P% _  _1 d- L2 R7 k  R' j
poll-class

: R  [& w( h: P1 i6 n3 e1 G% k! S' R" M: R+ w
setup-plots

4 P  f) N( ~" r1 `1 Z% o. j; p; r1 E: V4 R; @6 a
do-plots

: \- _8 S- V! j$ F! uend+ J! \" \$ w9 z
3 a7 I% A" f+ M; \5 N- r
to initialize-settings
- R* r0 c0 n" o9 q! e8 ^2 ]5 I# d* d  Y2 Y
set global-reputation-list []
1 `$ ~+ o; d+ n: _5 `1 V0 K
+ e( F9 A# ^! O
set credibility-list n-values people [0.5]

2 E, x+ `& _$ a' }8 q8 s+ @
/ {9 R: w/ O# G, m/ ^" `  _5 Gset honest-service 0
1 [* m( k/ m5 v# ?3 O

  Q/ z+ ^& J$ i1 [set unhonest-service 0
$ P. M! P  Q" n1 R

& z: j  T5 L0 g$ }2 i( Bset oscillation 0
. E- Y* y1 \' _& u8 S

- G2 O; @9 [' G7 zset rand-dynamic 0
) q( }. b+ f! t' Y
end
+ l" t3 r, c/ Z# T5 n; z% A
/ V' B- n5 H' g) h% Kto setup-turtles 4 A" e4 E6 ?; `0 S  o8 W
set shape "person"+ ~6 a6 F1 _7 ^4 U
setxy random-xcor random-ycor  w& p& x# A2 B. g- ]7 ~$ B8 X! ]
set trade-record-one []# z! b: B3 R" O: V+ J# W2 |

, H! o" @! A6 Jset trade-record-all n-values people [(list (? + 1) 0 0)] # s2 z2 e8 |8 r8 i4 w" s* }# k: _4 u

# C- O0 l4 H" m1 @8 wset trade-record-current []0 i5 p# M, ^) I% G5 j
set credibility-receive []+ v4 c5 i! U, ]
set local-reputation 0.5; w, }# _  w) `# Z( [
set neighbor-total 0
/ L2 x5 G5 r; Z! t) j8 Eset trade-times-total 08 C- V% ^4 Y6 k5 o8 C, X
set trade-money-total 02 E, k" A) ~' u8 V1 }
set customer nobody
% c( c" d' M5 Jset credibility-all n-values people [creat-credibility]
, x' K3 u2 R2 k1 B% _0 }( B; z; Eset credibility n-values people [-1]' m% F( b- s2 ?6 M7 [( T3 T
get-color/ O! b; q1 \- J7 [# T

+ g& P) Z' ]3 o0 J! g* l7 Y! \end
: m* a% j+ w, I; D# O3 N
- n3 Z5 E2 ]% v' |4 |8 rto-report creat-credibility
% {  `! o0 i5 Q% F# Z4 N: ]4 Dreport n-values people [0.5]
. W1 v! l7 b' t% Fend
; c' T+ I. N" Y/ v+ h* V2 q
/ e6 }% }/ D* z* Fto setup-plots
# m' U  |0 Y' s+ G1 ^4 \! k) E7 i( j5 W
% |  j( M! m/ x1 R% _/ tset xmax 30
0 o3 L9 J2 J3 f  U

% @4 T, {+ M+ A$ m5 [set ymax 1.0

# y' x3 J$ D# _3 N/ [" K* i
* U% ?: ^8 C4 }. X+ b# Lclear-all-plots
2 V4 ^# Y) y  f; d( t

5 |' |% @( @% U9 C+ w1 j8 Esetup-plot1

, m5 l4 V/ v; w! s8 }( ^" H6 g
5 H) E7 y( `  Q% |5 Tsetup-plot2
# Y' n+ S) D+ h1 ^5 Z* T
  w" v, M# W0 K1 C
setup-plot3
7 Q% u9 d0 R' a
end
1 R; K6 i2 b1 b( N8 @8 v* u. s( j5 M' T. m# x, K! x1 ?5 j* ^
;;run time procedures
/ Z+ P! _0 h) f: Z, S- _+ i% `9 r$ w1 p% X) y" I, `4 E! s. m- T
to go
. G8 p  U8 _1 v1 Q' I, w# H. _3 s* S" F6 ^1 r! q; z! x8 l  L, I
ask turtles [do-business]

+ t' J& N, p) n# [8 O5 P9 x5 ^  M6 W3 jend4 u+ _; Y1 f, z+ K1 @& r, \
+ |" U( D/ M- S. y0 k' M1 j  R
to do-business
! B6 [! }, M' y0 g% E
: O9 m7 ~  q* j/ B& j& l" B

$ `$ H% A0 c5 n2 i- Y* _rt random 360

! Q9 k& D2 `1 U/ j; _" @# {+ D
fd 1

# e! D$ S$ [0 j" |% e" m) ^1 W& S7 o' ^1 E$ M
ifelse(other turtles-here != nobody)[
7 E# \0 f. P! Y7 l! s1 H+ j, [
) R$ W" E( m& w/ `
set customer one-of other turtles-here
3 a/ @9 }7 y# b, k6 T% M1 R6 S
" X5 ^/ ~" A8 N
;; set [customer] of customer myself
7 a$ i0 ~) F) J' g, k- u+ I4 J

: x1 d0 L$ v4 A8 k! c9 xset [trade-record-one] of self item (([who] of customer) - 1)- V% m; k, f  |+ G7 q; y
[trade-record-all]of self$ |( N1 r0 q" Y2 ^- M: N$ v
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
6 |* r; n* a9 q( N7 [$ e' q

: H+ z) C- j& Z3 f8 o. uset [trade-record-one] of customer item (([who] of self) - 1)# K# E( h2 K8 i* g$ H
[trade-record-all]of customer
7 |( B6 U% C) M( i3 C" ?- ~1 Y

8 i& p5 f2 @0 p# C1 Lset [trade-record-one-len] of self length [trade-record-one] of self
' `' B) a. e4 Y5 f: X8 I: E) k# [
. |, M8 B) q' c6 u) t) F6 P
set trade-record-current( list (timer) (random money-upper-limit))

& J. d7 w; x5 a' X6 l: g
) s4 |$ `: v7 h' u8 I; N! ~  d9 }ask self [do-trust]5 b* a0 {3 m  ^$ W9 M! _
;;
先求ij的信任度
' B+ Q' w& y9 `7 X1 b, Z6 Y) X7 h+ |3 ^7 e+ K
if ([trust-ok] of self)7 \+ Z1 a: N3 H7 P
;;
根据ij的信任度来决定是否与j进行交易[
" R  M) r1 V2 Yask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself) N/ l/ o& h# K5 K
: g) K; `/ W( |6 f' w( @$ @
[
# L* I8 A* ?6 \( h, X, i! N
# F& W8 R7 n) l5 k. y+ X/ N  ]5 A) L( z
do-trade

* N0 R. X6 @; q0 ]2 k) [. V+ {+ M3 X2 [: |" o' J
update-credibility-ijl
! d# \5 x( E* Y/ C3 S

$ S1 D/ _; |4 f0 `update-credibility-list5 U  C$ S- s4 W6 A, v
$ p, e$ T( ?) ]; |6 j

! {; h4 o) Q$ P# D; S0 C& f9 Supdate-global-reputation-list
' i/ {( s' w6 J: k5 T' T
. |; |9 _$ a- \& k/ @
poll-class

9 R/ N& c7 d# i" M" E. A
& b  A; A8 \/ t# G/ zget-color

- D! G- e3 B, [
* X2 y! S" q% w]], n! a5 k; O) U$ W
& d2 a2 c) v( e/ z+ ~* _, R- z
;;
如果所得的信任度满足条件,则进行交易
0 E2 G0 W4 A; t2 {5 o) d" ~/ m$ v4 ~2 x9 }
[
1 k( T: [* k, G$ @
* ?$ M; d/ X0 c/ H/ _* V7 K' Y' k
rt random 360
' ]6 r' E$ N0 j$ G% n

( z0 W& H  Z% b1 s* Bfd 1
! c$ \% V( @" `. b# t  W  f# R0 a1 d

& F& K% V" }5 @$ k( F$ I3 H]

" l( Y4 ~' t' |, S6 {+ y! M
0 P# s  m7 A6 [7 E' C7 C" zend

8 \/ k9 k: k# S0 \: t
! Y  s1 X8 @; Cto do-trust 4 j! R0 m  j: V- r* f
set trust-ok False
% u) L7 N* I  q2 ?- B. \& H. Z/ |/ G" M' L
% A$ {- _; e. x: \5 U
let max-trade-times 0
7 G% N# H4 {$ S# t9 N; ?7 }+ V& |foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
0 f2 y$ ?: d% g' nlet max-trade-money 0
% v  v1 h# k, _/ d2 Rforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]+ I( x8 a$ c  Y; ~! _# 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))  o/ A/ I) |: \9 t7 H8 q

3 v. X  c* F! y. S9 m+ H

4 k8 v" o8 @/ C2 V, U2 _1 b& Rget-global-proportion+ F( [* H. x/ b: m& [5 m2 s
let trust-value
) r% `, e8 ~  alocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

5 G0 m& v  r8 P" Cif(trust-value > trade-trust-value)
* Q' L0 o; C# c3 N" A6 G" y! k[set trust-ok true]0 u- ^/ B/ }7 T
end( J- ^* F4 j* \: U; A  E
$ y% I( U1 k! [
to get-global-proportion
# t: X/ g, X1 f- k' J3 Xifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)0 X% d' Z/ h, x1 Z4 e0 L
[set global-proportion 0]
( Y& N! r1 E0 o* w/ }+ u( |[let i 0
! g; X. Y3 R4 m5 ]- M# mlet sum-money 0
  \# G7 C4 B( f9 F5 b( K* Jwhile[ i < people]
& p6 k2 m! b8 h9 J' r3 C# O9 @- i[
$ k& e6 H- J& F% d" yif( length (item i& {, Y- r7 B% J
[trade-record-all] of customer) > 3 )
5 O6 B3 z5 n2 t+ Y
[
: D" U; M2 @: h/ j1 f+ U- Eset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
. O9 T/ ]0 l1 ^5 m9 V( e]3 v. |& g2 \% R5 b- L* \
]
+ q: z7 g3 R5 \" @3 flet j 0% @1 B1 {* Z* L) p  Z
let note 0" _! U9 B% }) \9 ^: ]' h3 J, l
while[ j < people]% O# L! E  F; U+ R) o$ R, i7 H
[9 Q: b# o! v* s2 ^! K8 h
if( length (item i
7 p; W$ w+ d) K, H[trade-record-all] of customer) > 3 )
' G, M. `  u5 ^& t/ l% E
[
. \+ P) O& `9 h- ^ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)+ ~" k$ e7 o8 u3 o, w" S6 \
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]1 U# F9 l  Q# L
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]/ w# D- ?. n# V3 m9 @5 d2 a! }
]
/ T+ @' J8 Q8 D( @. P" S]: o; K6 b: N( H: O0 }( \3 K) y: m
set global-proportion note
5 S' B/ n- i+ t1 i( n]4 G4 i7 ^$ e3 }) G/ D5 G! n4 I
end5 d$ p. ^. K; L. `" e
" D$ I# k* b+ ~$ h. `/ Y
to do-trade: d4 f& z  g5 H& l- @" E3 G
;;
这个过程实际上是给双方作出评价的过程
& S$ S0 l5 B8 t$ g) E$ g7 fset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
2 l" k1 k+ i' V  [' H" b  bset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
2 y: j9 c4 \% e/ v, Qset trade-record-current lput(timer) trade-record-current( h- E! r4 G" [1 j* Z
;;
评价时间; ?. D  D5 j; @) p  }8 n1 c% Y
ask myself [
" s0 E. U+ \  r$ Wupdate-local-reputation; @8 x  ?; g3 X+ m  o3 Y, j
set trade-record-current lput([local-reputation] of myself) trade-record-current1 B8 C  V, n( [! I3 z6 n
]
4 E9 Q. I0 [2 Oset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
6 Q* K  B8 t# D3 R2 n5 t/ y9 A;;
将此次交易的记录加入到trade-record-one6 T; ?8 F: F8 p) m* @
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself), W7 Z7 }9 ]4 X+ G4 X% P2 H
let note (item 2 trade-record-current )
* {; g: p8 ^2 g7 \set trade-record-current6 U" L; F6 ?. r: W' u
(replace-item 2 trade-record-current (item 3 trade-record-current))
' p: P. A4 Z( }! }0 _5 {; h0 o
set trade-record-current' \3 L) @- ]2 W$ {* {- E
(replace-item 3 trade-record-current note)' Q. [" f/ B/ q

: F% U9 b& i2 O

- @1 I' D  }) k  l; B, w9 U- {3 k3 S3 Xask customer [
7 j/ f9 [! ]. ^$ \update-local-reputation
% l, l' H9 _/ L1 l  d* E0 ~2 @( Uset trade-record-current
1 E- Z( ]7 n. P" m* |; S5 _( z# t(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

" s( `, n$ G" I' S! R: k5 L+ E8 i$ j]2 ]: n7 Z$ P  e, n9 p, C, A

' t- C$ {2 w# T, K
  _7 r5 @( g/ i% G' C. ?: Z
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer/ E. o0 Y) P! b* |* F7 I2 p( H+ Z
; {8 z" K  V& X: ~
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))/ z' W3 q1 F. P/ J: q& E
;;
将此次交易的记录加入到customertrade-record-all
9 b# D5 E% f& j* C% ?$ \; gend
+ w9 y) T! d+ ^3 S0 \0 T" r7 S! V8 Z6 }3 F6 O/ V0 a
to update-local-reputation
, j; x; [5 {2 A# N* e' Z9 tset [trade-record-one-len] of myself length [trade-record-one] of myself( {/ `0 ^& \5 P! O  |) L! A% V

$ V/ m0 {  L- J+ w) h$ \+ x7 o% W& X: |
;;if [trade-record-one-len] of myself > 3

3 L$ m1 u3 O. t+ G6 w' z  `0 xupdate-neighbor-total$ o) G" ~9 f! |9 M9 d
;;
更新邻居节点的数目,在此进行
3 G% F9 V0 @9 K" D) ~  `* c7 `let i 30 m% g% H! |# [
let sum-time 0
0 X- Q, C1 l: ?. }- G9 Swhile[i < [trade-record-one-len] of myself]$ _. U3 c+ v* f; ]8 @; \
[2 ~1 C5 c; g/ ~! N1 O! a/ a7 O# D
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
- F( o/ r/ X) X$ pset i* a  w* V1 N2 M7 r) w
( i + 1)

2 j4 ?6 b* g4 D2 F5 ^3 Z]
: Z! p* n7 [- f2 k' Xlet j 3
" B8 y9 t, E9 Q+ _+ K+ A3 w" rlet sum-money 0% L4 N0 }7 C7 m- F
while[j < [trade-record-one-len] of myself]
( b  R/ L1 k0 h! T. _[% e: U, z$ J, l: e
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)
; S$ v: N  y, |& Cset j( }6 M9 d9 a. N* {& B5 x
( j + 1)

/ B* W" z  u0 W6 c]
. [# i. |0 l9 Klet k 3
! R3 Q8 z2 x# {+ G5 clet power 0
) C+ q4 q: K+ ]2 N1 s* }/ |let local 0
+ _  P5 j: ?* F8 [0 F% iwhile [k <[trade-record-one-len] of myself]) n0 _/ j$ _9 L
[0 u4 `3 E% [% w# S) F
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)
4 Z6 r, j, K; |$ O% z+ Hset k (k + 1)
# `* r# a, {# ]( ?1 d]
, j. a8 h- ?) t9 R0 zset [local-reputation] of myself (local)
! C+ F% H' G" B* l8 d( P! tend
. U: h( k% t1 G) x& w8 u4 N0 F5 i( ~1 }$ w. r( Z
to update-neighbor-total) d: k# o: R2 ]0 H3 I

. ^4 p8 M/ I5 h; C. [3 u" E2 iif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
' ~9 {; Y# R/ [( m% m) b
: a5 v: Y& I  q  Q
, a$ ^) D2 [5 H7 U; u7 o
end
& h. r0 w; L; q- f! p2 O. V. J9 R8 @
to update-credibility-ijl
  W5 a9 Y5 h' s+ G
( q0 Y8 p8 S1 ^, ]+ d( H;;
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。% ~) v) J' a, v7 W: Y
let l 06 F3 `- h& z, j; ~4 z, F3 |
while[ l < people ]1 z$ x6 j3 `) i- p: 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/ G/ w' E& o) L% F3 S( d3 K
[, Z9 d" i. j: `7 A6 t- J7 n
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
3 [7 g6 z7 W* K. h0 q! sif (trade-record-one-j-l-len > 3)
, a: f1 {. B3 V, e: _[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  z! e2 z% k3 W
let i 3- l! X4 Z! F7 t! f  s: i) F
let sum-time 09 T6 g( R- \- a1 Z
while[i < trade-record-one-len]+ U; i7 m) V; t$ _7 a
[
8 I6 X8 Z) E1 H/ _set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
7 J! o" U  T( r5 k% l( Y; dset i
* N2 I) f6 y1 H( i + 1)
) ?. u( s+ Q, R
]8 L5 d7 a1 H9 D; f
let credibility-i-j-l 0! @6 B; C6 A. d8 s0 o$ v" ^
;;i
评价(jjl的评价)
# f" N2 F( m- ^; s+ e! M. j/ N9 |8 Vlet j 3
' g: k" J. M  e# Q* V& L/ _% d6 Rlet k 4
) v5 t9 t/ L, P# kwhile[j < trade-record-one-len]1 `3 g- i; F+ _& d. N, M/ c
[$ `/ [/ C0 v  a; W" s; [- X  j
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
1 i7 H! w8 e# q' x/ Aset 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)9 h' h, l0 N: C
set j
9 `) R; L3 g+ X( j + 1)

- [# [" A9 H" w/ T5 C0 n% l3 e]; d$ ~( Z* y2 e' W% d, }7 L
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 ))
% k* |  E5 Z- x& D5 u
& n& Q7 T. u- o$ _* {% t, c

9 T9 E6 ?, o3 w' K. P8 E5 c* N. Slet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
( g; _! Z7 O2 K1 Y$ {;;
及时更新il的评价质量的评价; f8 A4 }6 W" l, T+ V7 T7 l) R
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]+ K6 j  \$ T& A+ w# w
set l (l + 1)
' T$ j6 g  z: x! b]
& v0 l4 }+ \7 N# q7 {end. b+ U2 E0 o1 n% R- F: D) u

2 s& p& p" q9 g" sto update-credibility-list
2 e$ x8 E, E) L/ g2 H! }let i 02 K* c  P& Q) M& r" _) k
while[i < people]/ }" O+ ?- `5 }! _7 x0 |
[
$ e. W: f9 t9 M% n5 X$ ?* G) ]/ Clet j 0
. Z" G, b9 u: U' l1 F! [) Qlet note 0$ ?8 e( K, v& i. `; |
let k 0- x  U; _& p5 |4 n: L
;;
计作出过评价的邻居节点的数目
9 V6 V1 @( i9 q  M2 Uwhile[j < people]# i% _3 H7 F1 ^( S& o) c
[- b& h! k/ \) w  c
if (item j( [credibility] of turtle (i + 1)) != -1)6 `! E  G+ b. P. x5 h3 h
;;
判断是否给本turtle的评价质量做出过评价的节点) s2 }# ~8 e1 D6 @5 [; e
[set note (note + item j ([credibility]of turtle (i + 1)))) [' j0 }" K3 h4 t) X
;;*(exp (-(people - 2)))/(people - 2))]

; i. S" p& I/ x: M1 j8 oset k (k + 1). J% l; Q! B8 u
]
4 u7 w0 s3 x- ^set j (j + 1)
7 h0 u$ p% @3 y" _9 ]]( D$ D& c$ F  D$ I2 B1 ?, N  v! y
set note (note *(exp (- (1 / k)))/ k). ^5 i3 ~9 Y3 b% S3 Y
set credibility-list (replace-item i credibility-list note)! G$ E9 }8 |0 I
set i (i + 1)5 e+ w6 D8 i: T  Q" w7 w
]
" e, j2 r! }8 B4 D1 i; Xend7 _! G* u( ^4 w% J' u5 y+ B0 w
1 Q5 g" C7 ]- {2 z$ \
to update-global-reputation-list
2 F" d, @/ w% `let j 01 K' H* i9 x8 m8 P* F4 {
while[j < people]
- P4 `! t* E! i6 b! O[
& u  y$ Q& U( w9 ]let new 0% H4 m, D  B& L. d- ~
;;
暂存新的一个全局声誉( c/ \! y0 f. H3 U
let i 0
/ t+ W5 P8 p" ~4 |0 U! i  Y- Flet sum-money 0. B" H9 ]" L; B
let credibility-money 0, u3 L0 ^# G" [+ K! G1 b0 t6 ]
while [i < people]
' j! E% t! @3 G" V% t3 X[
( E( N# X9 Q9 V# g; T' D* {- oset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))0 i! H2 I0 h% Z- A
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))7 f/ M1 m- B- o8 z4 E2 G9 \
set i (i + 1)# w3 o/ }( N: x3 }7 {6 `( T. G
]
  t4 c! }) |( @3 R+ rlet k 00 \! @) q( E, o  o+ o) c( s
let new1 0
: @0 x! m7 G  k$ A6 s* y# G( Rwhile [k < people]
8 }% W4 L4 E8 A- e# f" x[
: ~5 h6 D7 _' T- y/ |9 aset 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)
8 D* t2 X% O, v7 k! V% {) L: Gset k (k + 1)# K6 t2 o0 O+ f; B2 f
]
9 {& o% @0 ]1 C! Lset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
0 J8 g: g/ B( P( D: Qset global-reputation-list (replace-item j global-reputation-list new)0 t* ^2 k7 @) l( B! ^6 W
set j (j + 1)
' [9 p* m7 |* I$ a% U7 o]0 S9 f4 I* u  Q+ b0 _9 J& b/ b/ u
end# S' c5 w" [" t- I
3 ]0 z5 q' R/ x$ B
  g7 w: f5 ]; p" O+ H  u" |7 v
. X  u. k& e1 f) B$ O: l
to get-color
, w6 t, t/ b" b: t# }/ m; H2 P# l# Y" S0 D6 j+ \3 }
set color blue
& Q& f9 [0 B7 q+ f8 p8 L9 R* b
end# P2 ]% X% o7 T1 O

3 ]+ D. f9 G/ k1 Z* ]0 G3 Dto poll-class8 }2 |  V7 @. \0 t
end
3 b0 X# U; K8 ]+ H! t( j7 [" X  t' r3 F: H
to setup-plot1
5 M/ f8 w/ j) w% ?: a
" `, T7 J0 F. [set-current-plot "Trends-of-Local-reputation"

$ n  S" ]' c+ M9 w# l8 J8 ^: a* e" E! O, V6 g
set-plot-x-range 0 xmax
' p- [* A' o5 ~+ M
, e4 m/ [6 ?" e/ _- \
set-plot-y-range 0.0 ymax

% t1 H1 J. B( P4 e9 ^' }+ }end
+ K1 _8 f" O) v7 a, m
* u0 [' P2 m6 \' Q; s; D. }' mto setup-plot2
1 W# V; k3 `& o( o4 [
7 u" n* J1 R( }, L  y4 Qset-current-plot "Trends-of-global-reputation"
  x( @$ N. z: `7 Y3 F  F

8 v6 o* _1 k) ?8 |, s# b# i; T. w4 D) fset-plot-x-range 0 xmax

7 T! V- Z: T% n  K6 C( `, V) m) [- i
set-plot-y-range 0.0 ymax

7 u* c* m+ g3 B% ]$ L8 }end* i2 d8 e/ j: P3 V" y/ Q1 B& X

3 J0 C, \) J3 q$ |/ s6 q/ Eto setup-plot3! p- Y2 O4 j, r$ e

) t1 }* \9 z6 O! C6 o' x# ~# Fset-current-plot "Trends-of-credibility"
9 ^; n1 z3 y( m3 Z% s" }( `

# L2 o% U4 d& D8 _# \$ kset-plot-x-range 0 xmax
; s' u5 i4 a3 r# r: n
! e$ I$ H/ |& T1 r/ D: i
set-plot-y-range 0.0 ymax
9 r+ g  j! {1 [% B) l
end% [% @2 R% x! K7 V# s- J. n
+ t2 N9 s: ]  @7 m
to do-plots
: z& C9 B$ C3 k, P& _, nset-current-plot "Trends-of-Local-reputation"
# B) A0 z, O1 ^7 l7 \3 Iset-current-plot-pen "Honest service"
6 H1 @/ X9 n, `! j+ fend  Z0 a3 b% N5 r( U! a3 |1 L# X9 Z
6 Q' {. U; A: k" ?, {, w, ~
[ 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.7 Z* H9 V7 G! O$ P0 a& F' B

* I" T5 C  D8 w8 M2 Z. k1 H. e" q+ F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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