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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:  h" h5 _) o7 n8 J0 p* d
to do-business
4 V: }# v: f# _, l8 Z rt random 360/ m! ?6 B$ c# F* b, e8 u; f
fd 1
7 l2 u  z: `4 x/ F& J ifelse(other turtles-here != nobody)[
) [. Y) k$ L3 }9 a2 a5 T  A   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.
* _# A, o% b( z  a5 \: C   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
5 f; s  ]7 l* m3 ^% B( k4 D" b* E9 h' y   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
& R6 `; v5 a6 j- l: e2 B( q   set [trade-record-one-len] of self length [trade-record-one] of self) L4 ^$ a0 \( }7 {) C
   set trade-record-current( list (timer) (random money-upper-limit)). Q( N! P5 w# n" m) t3 r1 {3 D1 l$ Y

3 x0 q$ [& k" _, s5 b0 E问题的提示如下:4 C6 y8 q, R) x5 Z1 C

: ]: O/ I  @! ^error while turtle 50 running OF in procedure DO-BUSINESS
8 x! F- E3 u0 o& Q3 F8 x  l0 C9 O; G  called by procedure GO4 J/ `4 S) a  q/ n
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
! q" G5 M$ T: n
(halted running of go)
. {6 O: K0 t. l: n
0 `" J7 i! m0 F6 v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~~. K1 V4 v% P7 |
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
2 m$ V% R* v0 b, `% e+ sglobals[& ~- u# X3 d: }3 i! h' ]
xmax
4 p8 d  Y, ^* w( dymax
* M9 P' Y+ X  R9 ]global-reputation-list
/ t2 Z; u0 G+ [7 Q% E! O& i$ K
* K$ E3 W6 P2 L, U. l7 J;;
每一个turtle的全局声誉都存在此LIST
$ y' ^+ Q0 }( g; scredibility-list
& d4 ?% H" ]. V7 J. L;;
每一个turtle的评价可信度
0 P) z( W9 j; w7 H5 h/ L% l3 [honest-service
: w! h/ S  u: M6 Z+ cunhonest-service8 B+ L6 e( e" Y4 `( i
oscillation
) V, [+ ^8 r( R% B0 a5 U2 a$ brand-dynamic  q  e1 ]) g  h! U8 b
]
% D; v- O& j3 E; T! l% a
7 z! ?0 b6 _/ P" c! k  v; Dturtles-own[
0 @8 m2 @; m2 z% O- atrade-record-all
# [* j- z& }2 R0 z2 d1 I; R;;a list of lists,
trade-record-one组成
( W5 z, r0 u4 x6 K9 A, Ctrade-record-one" I! B9 |, l6 H0 R
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
) [+ c3 n' w2 B- w+ q
1 S8 D+ T: L3 ?+ P" g;;[
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]]0 U; L6 U# F8 e! C% W6 p. W
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]0 R" n: R. }* m$ z
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list
! K& `9 v" d+ \; x- k  }; ?neighbor-total$ Y2 o" l6 d1 R8 {
;;
记录该turtle的邻居节点的数目% a* M, U" Y  q- r) i# v
trade-time
- @6 O) F3 S. M, A4 s;;
当前发生交易的turtle的交易时间$ k+ L/ |6 j5 M* v8 x: P% T
appraise-give- X$ h2 F3 d( g- \- q3 U- q
;;
当前发生交易时给出的评价& r8 r/ `8 i# A; _9 v) {( I7 L
appraise-receive
: \( c7 m( S; L1 a4 P1 O5 ^1 ?;;
当前发生交易时收到的评价
) l; X9 R! I+ K3 M8 m9 `( p! Mappraise-time- x  R7 t3 o5 ^5 s+ X8 w/ _
;;
当前发生交易时的评价时间
7 T/ c) v; F; l+ c0 o, ulocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
# B* C0 B/ }7 utrade-times-total
) c4 L7 d+ l! w( ^;;
与当前turtle的交易总次数  _# e: s/ W$ b3 j$ r- E' h
trade-money-total
" `. x9 a  C% U8 ^;;
与当前turtle的交易总金额
- \% }' W$ `3 R' R; h5 ~: E' rlocal-reputation  a" a  ]* ]7 y6 `8 |+ U4 i
global-reputation. g2 o% B! x8 i1 B. U- Y' M
credibility
- S" P' U7 h8 O9 ^/ m;;
评价可信度,每次交易后都需要更新
  W7 a% T3 @) b* W; Ocredibility-all2 o$ s% ]# S$ J+ s1 z, P1 i
;;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( E& D9 ?! N! Q7 {

4 H) c+ l4 w, C/ s, Y0 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" v. a+ b" g$ O+ A: q+ R
credibility-one# y, H5 g& G' v8 g% O' q/ n% z! b& ~
;;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
( E1 q5 ~2 Q- a1 p1 H) |; y$ Bglobal-proportion
: Z3 v2 Y% h7 [$ [! {2 bcustomer
2 P& J" j0 D  N# Ncustomer-no
+ c* h. A  ?- j/ j5 j9 otrust-ok
8 {- N3 ~  u; a$ ptrade-record-one-len;;trade-record-one的长度
# p. X/ o* e7 G7 L9 W5 @]
" T1 c+ J* F) Q- \2 ~5 H; T* V9 |* O
/ n$ o" i& d5 K7 ~, O;;setup procedure$ x8 G/ f4 B' ~1 ?' H
: V0 L, n) p; @8 i) h; j
to setup, `) i! d3 n0 i& K6 }# J
  M- e3 o( F! V1 l
ca
$ B% C: y6 e9 r, n- B, R" {7 F

  V. R, t1 R0 winitialize-settings

5 H1 g2 i" _* e3 p; g3 @6 R
$ f: I! l5 ~; j, a5 {crt people [setup-turtles]
9 u' O1 w: ], S- V
" M% @+ m6 U; }' b* Y5 @& ^
reset-timer
( n! H2 s  X- l" }; P4 v
+ x6 O* `) |! Q+ C- E7 q
poll-class

( m4 y2 o* D1 u- P- L/ h* p
, h6 ~( {2 p! m* A9 o  G. l( Csetup-plots

5 q1 w6 @/ q1 f" c
3 h. C  H+ q9 C0 Ndo-plots
8 n% T, `4 U6 A$ _
end$ C2 b6 Z5 E$ o8 F! W( n! I2 M

% ?* k4 i: K' Z% F' ?) w- b& h) |to initialize-settings
4 m" l. h& V% ^# R* N3 m/ i9 b
2 d- H8 v/ R  x9 k) Tset global-reputation-list []
+ i9 ]5 Q1 K2 j" C) y; G
* ]+ t9 w0 t! M' S
set credibility-list n-values people [0.5]
* M2 ~: `' h1 S9 p% }
1 W; k* j5 Q$ Z2 u# U2 }9 I0 ^3 Q0 c
set honest-service 0
( F) O( g8 a" z% l7 b9 u# o

- D$ A( ], ^( d/ x' x/ Z1 Z: Pset unhonest-service 0

/ g+ z5 O+ I  H+ w+ t& j/ ?( Z9 `
; |5 @) f  z2 f  @) Gset oscillation 0
7 a* v2 N/ ^0 j+ V0 T' [3 d! |

9 C, z$ b5 I. T2 j: B6 ~set rand-dynamic 0
4 i; P( ]4 N- e# L! I
end
$ [5 [  o. R4 w' G2 ~! E# o$ @- [3 t2 {* N, r7 J
to setup-turtles
% B% ]3 w- J% L: u1 V5 a, Eset shape "person"
4 K' d# @( V' i0 a2 X- ^setxy random-xcor random-ycor
  x. ~! ^7 ^+ ?/ h% ?" ?set trade-record-one []
' C) `6 S1 |% K+ s9 l( U% k( d

0 X4 B1 B9 q: r1 k/ k7 _! D2 K" C$ eset trade-record-all n-values people [(list (? + 1) 0 0)]
! h0 L8 v6 L* t, b+ w, {

% }0 F, T- A' i6 n) O( o5 }set trade-record-current []5 X' n, ~5 H: n" U( S) X
set credibility-receive []5 N0 w! F0 T. H1 B) T$ n
set local-reputation 0.51 ?  c+ m. c0 e8 [
set neighbor-total 0- d4 \# O5 @4 r* }) r' M3 p* d
set trade-times-total 0. \8 ?2 m( Y1 d4 E: e( c) i# W
set trade-money-total 08 |7 d6 i7 c% A/ l) O
set customer nobody
. ]3 M+ z9 a8 Y2 T" v- h6 A5 ~set credibility-all n-values people [creat-credibility]$ Q6 H- M+ ^- V7 [9 G1 U. a
set credibility n-values people [-1]% d6 j7 u- q' S
get-color) e  N9 }3 d) w/ V! b$ o

/ {8 V1 O# A8 x" o2 a% @end; l; F6 w4 F# e+ o

' \; d; w" F" f1 i$ Dto-report creat-credibility
& z" a6 n2 V+ K7 xreport n-values people [0.5]
8 O7 n; t/ G8 a0 Pend" N2 {# |, L& V- I6 c

" n$ @. L( l+ j, R9 y( O( ~to setup-plots
! ~8 Y" y$ v" d2 u- \* ^+ _( G1 J9 c0 O: V) P
set xmax 30
1 e4 o$ {  a" P; `
% D+ E7 x' f' I9 t' Y
set ymax 1.0

5 h9 ?* k: ]- T/ a" t/ c- I- H
! W/ X4 z9 p  L& {7 `: s( k+ pclear-all-plots
1 s9 n% C0 y: a9 K9 t6 \

8 U: ]/ T5 }* \9 d1 Gsetup-plot1

4 O) X2 M( a  a! J- h! P. s. p+ u5 P. O3 E0 q
setup-plot2

, \% B  c$ _; M& J$ G$ Y, n- ~0 X& F
setup-plot3

! y. L: h! Z5 {- r: e8 a+ P; A' send" [4 B7 F) s- ]9 q# B1 \: m

& x1 ~$ o2 m. O2 r2 f;;run time procedures, h. V6 s6 g5 m
9 E. G, ~7 @1 j6 [
to go) C3 N6 [! S2 d

) z( y- ^  K+ m  r3 m3 aask turtles [do-business]

( H; n8 M2 h- R6 V% rend6 O/ R7 e8 u% y
9 q# c( E1 a) y
to do-business
- X4 J& m! ^) i1 [9 @. B
7 [/ a$ ?! K% m: f
; {# a- {6 ~# }) @3 }
rt random 360
8 j8 W4 E# Q& ]7 w* |7 O" w

: P7 c3 U, c+ N: J& S/ ^: Zfd 1
+ D  e3 ]% J: Y
  |! b3 h2 E8 ?
ifelse(other turtles-here != nobody)[

; k) V6 W" ?) g' f# V0 x0 M7 L  |6 i/ V, t* E& W
set customer one-of other turtles-here

* ~6 O( x; t( m$ t- v; K5 b4 N" u0 G5 {) y+ Q" I$ m: }7 g
;; set [customer] of customer myself
" m5 Y, d8 s& [" N8 z  p& g8 G

4 n. b% A9 r! k  `4 b& j- h: `set [trade-record-one] of self item (([who] of customer) - 1)8 Y1 ~( s6 ?, @! T
[trade-record-all]of self. h, a0 D" k+ {
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
+ B8 O, b. C$ D% D9 D

9 q  }: K: o! l, _+ U# eset [trade-record-one] of customer item (([who] of self) - 1)& P7 W6 I" x) |( l6 r
[trade-record-all]of customer
  F3 z$ R' [% V+ Y( g1 E+ O) s: \

$ Z- n5 W7 E2 Y( m$ U0 fset [trade-record-one-len] of self length [trade-record-one] of self

( |7 }( R2 m. K2 Q4 w( J# S2 F5 N; h# H& d# W: H
set trade-record-current( list (timer) (random money-upper-limit))

* Z- ^& R, n9 u& I3 P/ S
  D  c, M4 e+ R* |ask self [do-trust], W2 _; B6 {1 {1 Z. |
;;
先求ij的信任度0 G: h0 W+ l4 W5 _9 T0 g9 W
- E7 c* U0 a# M6 O. E& o
if ([trust-ok] of self)- u0 L" e/ G+ J7 J( p9 F. e
;;
根据ij的信任度来决定是否与j进行交易[6 z/ v$ s; K8 j9 r8 j
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself( A. g2 G: g6 @- e
- l" D) n& Z2 \8 M: z
[
, B% r, j0 \# c6 M% J9 k
7 D; A- p, v; R, `1 {0 r' A1 ^
do-trade

! C+ U8 M4 E/ Q) c
6 f8 P. ], e6 J/ Q+ T4 T( qupdate-credibility-ijl
9 E2 I& j3 [* B6 r6 W6 o9 b

- l: R+ a: ~$ x" U1 iupdate-credibility-list
/ S# s8 |+ d. q  b/ j$ N
- B" e$ U9 o+ x# Y- g: R
" ?! f( S/ }/ o) [+ E% H7 w6 `
update-global-reputation-list

3 \1 T7 z4 n, q) i
2 P# ?& g$ k9 k4 n5 Gpoll-class
/ n' R9 k8 ^) U5 S/ \) t; H
( ~: z) e+ a( Q% N; ^# r
get-color
* k4 Q% ]6 ^5 [
# ^( l4 ]9 A5 G. ]8 Q9 r
]]
$ H& Y5 ^/ o- Z" t; ]6 H- i, T5 Z0 j5 S1 f2 r+ G: Y. B7 |
;;
如果所得的信任度满足条件,则进行交易
. |5 m$ Q  i" x: F+ r! Q3 b3 w, A2 ^+ V% F
[

1 J* M* R: F8 ]. E0 p; a2 v" m6 s# W+ c: `/ k- ^- m
rt random 360

( R' M$ X  B1 {- ^8 N! A- o: _8 |1 @
fd 1

3 p5 V6 p; J3 N9 C3 L
% c* b7 V1 B8 j]

9 s" i! \: L" r3 l3 M! {! ^# S- S5 Z6 f, g! [. P  M
end

. Z: |1 n6 U5 j. E6 s5 d9 E4 n
0 S# T! E# n. l8 l+ Mto do-trust " h$ m- q# _* P6 A
set trust-ok False
9 \. k0 X& I% S' ~) z) K/ |
* Z, L( p  v) l
& B+ c/ D. C& t; c! d! s
let max-trade-times 0
1 Y7 z) E- Y0 v7 Aforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
+ w# H' `0 {1 W* }' b4 d0 B! q5 xlet max-trade-money 0
8 ~, Z: O/ j( [, Uforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
* L, c" h" ^7 R+ w5 X; T' ]let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
2 w( n. G1 v- Z% v2 p
3 y) D' K6 Q1 V
: ], T. \. z5 Y+ P. }8 P% G
get-global-proportion  O$ c8 I( x2 ?% r
let trust-value
! \* l9 O7 v+ N& n8 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)

) c4 m0 k& s. z# i1 _1 qif(trust-value > trade-trust-value)0 l* s1 n% ], [. j! C% q
[set trust-ok true], [1 T4 O- p- N; c. y8 C0 m1 }9 {
end
% x% p& V- m/ c- ]" K( [
7 {$ ?  C* T7 c; g6 H: N: m" j: y+ Y/ e/ |to get-global-proportion  y' }7 q& N  ]; }
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3); r9 u) F) L. T# z
[set global-proportion 0]
: ?8 X! o* f& I! h6 S+ E" S* a[let i 0
7 m$ b3 Q, J7 |& G5 b$ L' tlet sum-money 0% E; {! \9 D! U
while[ i < people]# ?4 n, t# P2 R3 X
[  k$ U' Y) b% J
if( length (item i/ |& l6 [- ]: o3 G6 e6 P- B* v$ j
[trade-record-all] of customer) > 3 )

( ^0 S1 A& @) b! Z  ~[
1 G" G" P7 H  M! [, Q. v9 [, h  bset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
) |4 @6 v+ m* Z+ z4 v]
  ^! V0 X/ g: @* j]
* e0 s: |( n# e6 T/ z" H  W- v3 klet j 08 ^" q* B* _) H' V) H0 ], y2 r6 [! Z
let note 0
8 t! a" h* K- F: s/ {while[ j < people]& S; V+ |( B" ]- i* w9 s
[0 t* D6 k/ k2 Y) d( N" k
if( length (item i
+ D1 L% N& _/ s6 c[trade-record-all] of customer) > 3 )
3 l" O' g! z+ V" B
[
0 {0 x+ ~$ o4 l0 Tifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)" ^$ W* f8 x3 m# N( `
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
& b2 o3 Q- a7 v  }& x5 y[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
$ ~; z( F6 j& J]
6 X( U1 b, [- M- }6 H4 f]
, }- |+ U5 g* j" |set global-proportion note" @9 `/ H! k/ e! O) I
]! ]' q9 E: \! V0 O8 n: t
end
. y% t1 I4 n, U8 |* W; m
7 x8 K  U% v! E8 X9 j% Z. gto do-trade
) b4 |5 J3 s/ g' M# [- Q+ S7 X;;
这个过程实际上是给双方作出评价的过程
  C9 Q! B& G; E* h  \2 u7 Xset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价9 v- w! A! O0 ]+ s8 @' j6 H* z7 ~
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价( S' ?' s- @; C5 v; N/ l+ D
set trade-record-current lput(timer) trade-record-current" i3 e$ ~* ~! l2 q+ ~! L  e) t
;;
评价时间8 ?4 `0 s  R+ u7 \# Z9 u1 P
ask myself [! e1 A2 r" T0 X" U
update-local-reputation3 h0 D; \& O1 w$ v+ W
set trade-record-current lput([local-reputation] of myself) trade-record-current
6 c0 h5 c( C+ m8 O: ^* q]! N8 F- _4 `; w, x2 {, O/ O  h. L/ o  P
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
; J5 y5 _, V7 ~# q+ B3 n;;
将此次交易的记录加入到trade-record-one- Q! f1 v" }- R5 R3 }
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
& i3 Y! S; U; D9 X+ A& Zlet note (item 2 trade-record-current )& o+ k0 k" j4 U
set trade-record-current7 G& c# S2 g6 ?) z
(replace-item 2 trade-record-current (item 3 trade-record-current))
2 A$ a. L% J) j3 A8 j. L
set trade-record-current
! F0 n  }' N- E# c1 m8 {(replace-item 3 trade-record-current note). X- l7 H# v& l( l
& `6 T& x0 W( I+ q5 l4 [

4 O# }- G7 v9 \. T/ t" i+ Wask customer [
2 \/ U+ ^; [& X) t' L  Y- Wupdate-local-reputation$ L! a: t1 d1 E+ Y2 _8 S
set trade-record-current( v; {' e: ^, m* ?1 L  z8 L! n
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

, h+ t4 a: t: l  i6 I% }% T# ?$ k1 v]
: ]& M: W' B: a7 [+ ^
6 W5 Y& x: }" u) L# p

* R3 T0 M& g# k" L: Iset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer5 h0 s$ @9 {1 r5 b0 e

; Z8 T' o& H; Z2 N9 yset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
, I0 I) f$ {( E+ o& ]; u6 D+ q; k;;
将此次交易的记录加入到customertrade-record-all
9 d* {& c' @0 W0 Oend( n: K. I) q- T6 a3 j. U

1 {$ T+ p- B, M3 {+ W* Y% v* sto update-local-reputation
! Q+ U/ t# P! ]. ]2 F) I% `$ Yset [trade-record-one-len] of myself length [trade-record-one] of myself  G- H1 x( j. u& Y! D7 I

" c* Q* [$ m5 L5 ?1 M: w* k  y) F& N
;;if [trade-record-one-len] of myself > 3
, M: _( j1 `# V5 K( E8 U/ s: }
update-neighbor-total3 \* o4 L) }/ n( z0 p0 ]$ Z
;;
更新邻居节点的数目,在此进行
% p# ^; g; J: u  D, flet i 3* L' J" v# [+ ?+ r
let sum-time 0
  f" n$ F5 c$ zwhile[i < [trade-record-one-len] of myself]
. E  U$ `: w0 S) y( I. N[# w& o7 D1 F+ f' o
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )6 h( h$ F7 T% j
set i% A* a& y1 q" y& z9 Z/ |( ~: }" R
( i + 1)

' G" s6 b; E" I, R- m]0 y' \# F$ o# ^; M6 X: G1 H; \
let j 3' h( b5 s6 B6 H0 `$ h9 W1 b
let sum-money 03 J% q- G" y+ f! q' ~  C
while[j < [trade-record-one-len] of myself]
+ r# i; H$ M% v) _' N6 W% e[4 u7 P( p# u, k# h  `6 h
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)
2 D, U5 t. n6 Qset j/ W& h# ^' ^' b8 F
( j + 1)
1 R8 u$ s! b6 N- l
]/ i7 k8 m' m2 F
let k 3: K8 D. U) r* X4 }  Y. n4 M4 ]6 J
let power 0, U) y' _% t" u" _6 [- m% @: \
let local 0
3 @2 ^' H& m; S3 Z5 i& kwhile [k <[trade-record-one-len] of myself]" v' l9 L# K, Y" q* l3 d# L) c
[
: {! Z. l4 }  R5 w( g( U$ |! \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) 0 |7 R# _) Q. u
set k (k + 1)
2 h% s9 }* y( \3 y( X]6 P" e4 y. ?$ c9 p5 S0 o
set [local-reputation] of myself (local)
5 v% z' A8 l% W# i- L3 ^end
- H2 s, U  t0 b/ o. g0 m: \* M# }" f5 Q% D0 Z( |! R
to update-neighbor-total& M" y/ C. W: \6 I& J' r9 D

' O& R# y1 a  T# Z  e; pif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
" w0 ~( C7 c" Y% P
% B6 ?, O/ P8 J/ z
$ y: v7 n* [  Q9 \9 K" r
end
, }! X+ X: ]2 E% x- N+ k4 G6 |$ |+ q
to update-credibility-ijl
8 X& n  c( Y0 @2 t% c, B! z6 ~  e
0 w, m) g3 J; d2 e9 y6 U" T# y5 G9 N;;
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。; b# R  K: z# ~' g- E$ F% X
let l 0% |, C/ Z/ [2 o3 p9 w
while[ l < people ]# b3 H2 o' M1 Q" z# 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5 _- E! G  c: V- K
[
! Q) ~$ f9 K7 ?4 M( tlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
$ M1 D8 X/ G' Y5 s) iif (trade-record-one-j-l-len > 3)7 k' [- \8 @- y% H
[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
: k. I6 `% ]! }4 J! N+ flet i 3
5 r) P. U; v$ T* j& Xlet sum-time 0
0 |) K6 T3 S( J) mwhile[i < trade-record-one-len]/ [: B" m( Y8 {/ K2 o. q
[  J' M2 X% u7 U# A" f
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
: T' m% Z! _% Nset i
  E. B! p2 `4 s& B6 J+ S- t+ a( i + 1)
% \8 x3 ?6 i; Q- o* D
]
  i! b; t  D0 y* Z3 Llet credibility-i-j-l 07 d1 ^+ o; v9 r) i+ S/ J1 g4 w
;;i
评价(jjl的评价)' ?0 z! X) m1 s
let j 3
  W9 @8 G9 C; A+ I) C9 c6 d& Alet k 4$ X0 X5 i3 b3 ^
while[j < trade-record-one-len]
! S* ^/ ~% Q" d- m- C[
1 j" V% F( P  z" z, {/ P* s! K0 Lwhile [((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2 l; E& l% G, d9 V, f; Q6 _/ p1 }! S' w
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)
& h" L  Q9 t% h* p  x3 \set j2 S5 M/ P; }: ~+ Z. n
( j + 1)

9 v& [: _& t. U( q9 i* X+ H4 i7 O0 Q]
0 C& y/ B* e; T$ r' V  X# V* mset [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 ))+ u3 t' a+ u' X1 m

" ]  c7 p2 m1 r2 z; H" O$ D( i9 k
: y* Q6 R9 d1 @, j# g
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))) c5 X6 j4 F3 ?/ I0 n- W, @, `
;;
及时更新il的评价质量的评价8 m' s: a9 D2 l
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
# A& w0 r4 G* X1 G# Lset l (l + 1)$ n; W1 {; h/ `" p0 `# s& t$ W+ k1 B
]
- \# S) C' |, }  l3 ]. }) hend/ T) Y% {7 n+ z9 x  I- U5 Z

! l3 Y6 Y( }, ^to update-credibility-list* Z8 L& t8 n: m& w, u
let i 0# ]9 `4 Q3 @; R$ b9 S3 I
while[i < people]
! k; [( l% E3 }: w3 a1 j: ~[
( y8 |$ {) H# w# I6 Z$ ?5 \2 alet j 0* O: B) _! P2 c: k- ]
let note 0
0 E% a5 M9 y/ C' E; @9 E; i# x; Alet k 0
0 f; D) c) H; ]! G;;
计作出过评价的邻居节点的数目! m! `% J8 r* @; I: ?( E9 g$ I
while[j < people]
/ r' r: h& N! {4 C) _6 g[
1 I' j/ b& G) _5 \if (item j( [credibility] of turtle (i + 1)) != -1)
+ [( k# {, j0 D2 @! {;;
判断是否给本turtle的评价质量做出过评价的节点* c- Z% S8 e- L1 C2 Y
[set note (note + item j ([credibility]of turtle (i + 1)))
; E, I4 K- s8 G  \+ ?* _7 G0 I;;*(exp (-(people - 2)))/(people - 2))]
1 @: K  M9 I4 l% b, ^
set k (k + 1)
* C9 u5 ?8 X6 f6 j& b6 R( []& G  p. F3 U- X- t: ]
set j (j + 1)& d  R7 G  h/ f- @0 d
]
4 s, W7 O% {% Aset note (note *(exp (- (1 / k)))/ k)* j% \0 R# d) S
set credibility-list (replace-item i credibility-list note): D5 q: d5 S/ g9 a
set i (i + 1)# X9 D4 J9 w9 }, ?. @2 ~
]
4 d+ C  l3 P0 E* wend
, C  ~2 P/ d6 x$ O( K
6 T* P9 R9 |9 _; E& tto update-global-reputation-list( d, {2 b! v: I, V1 {4 h2 T9 V. L
let j 0
$ j! V. U% B; F# ^2 e% J# ewhile[j < people]
9 R) S; d8 d/ F1 b3 z. J[
7 u" T, M0 l8 S7 Dlet new 0
, Q/ j0 [! E3 G;;
暂存新的一个全局声誉- j8 W- o3 V& |1 e( ^
let i 0) q! V. G) u* `: c
let sum-money 0
4 w7 C( B6 y/ D0 [let credibility-money 0) t: Z: o. z4 e* @2 T6 D( l
while [i < people]
5 n0 k% U  P3 V/ J1 `7 ~$ j[# A# i& G; Y$ F3 X
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))% O3 f* L- ?1 \, ~
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))9 E7 L; j, }5 B
set i (i + 1)7 }3 I) l: }7 r
]. b" {* Z+ ]4 i) Z1 a2 x8 e& F! [( k
let k 0% W) t; I) z: B% b
let new1 0
  K5 x7 B  W4 `; g  ^while [k < people]! q% U$ |( h0 I- A3 ]
[
/ d/ \$ C4 k" \0 x# [( e5 f9 `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)5 c/ z7 V; M3 z) v' W
set k (k + 1)7 ?1 `9 @8 n) V7 D8 L3 O
]9 G& |5 U$ w6 k9 i' ]3 d3 v
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
# F4 e: W2 p' R: |  qset global-reputation-list (replace-item j global-reputation-list new)* @0 W) n7 n3 ?; T; n5 j1 ?
set j (j + 1)2 U3 i' w& @6 z1 b1 g/ [. Z
], z* g+ V1 P# E/ e, J5 G  A/ ]
end, G) }$ h) R4 q& x9 {0 I

6 K, Y- @) \5 E6 m9 E
$ W1 K+ ?* u2 \* U
  M: n9 W8 B" T' ~3 O9 q9 Tto get-color
: e4 ?" l+ G# }0 M$ t7 C2 F$ \1 t5 W) ?. s8 T5 _$ d
set color blue
0 D" H& L2 g6 k2 P
end7 R; ]" y# m  ~/ I
9 b6 z+ l  z1 @* a! H4 M9 R$ ^7 X
to poll-class0 o; A: j$ n' J
end9 ^" Q3 L1 V4 p
( `5 i2 `0 E: @6 y% S
to setup-plot14 G3 w6 ^$ e% j) R2 {! c

' i- [# c- S+ ?# k, @) {- [set-current-plot "Trends-of-Local-reputation"

7 n: \) `* k5 G* g
, ]2 p. ~# ^$ P( \) Oset-plot-x-range 0 xmax
  t& W2 y! S; T

9 z% X3 Z6 {7 e$ kset-plot-y-range 0.0 ymax

' U* t: M" w; ^; q# cend6 o$ l3 m. r( M$ d

# {: a  s: c5 c, w. t# }2 f& J. ^+ Qto setup-plot2
$ w+ p8 g/ I7 ~" y
+ A1 B" }  D% r* Z5 fset-current-plot "Trends-of-global-reputation"

) S# L& O5 s! \( E/ u
3 Q3 }! N( i( Y6 Q/ R* z% ~set-plot-x-range 0 xmax
! y  ?3 T+ D, [' S3 W6 N" Q
/ p; D! m" r7 K+ ]1 E
set-plot-y-range 0.0 ymax
- J2 w: i! k, q; l2 H
end  ^8 {% A& V$ B- `, F# Z
: u: l9 S4 u0 s: `& G
to setup-plot3
- z1 b9 y6 W# B/ \  V) \6 b6 E- r& C! C8 O( M$ F4 Z
set-current-plot "Trends-of-credibility"

0 i' j" |' N2 ^: y) Y. m4 P
: y5 E, n9 R- w$ v9 Z$ o5 U9 mset-plot-x-range 0 xmax
) ^+ w3 w0 m. S

% X3 D' P# @6 N9 Y9 jset-plot-y-range 0.0 ymax
8 G2 v2 G- g, d! v: e& m& x' L
end+ X/ e: b5 Z: f! X, S

4 }4 w2 h+ K7 p2 k. C1 wto do-plots1 o. p/ W" w; C. Y) q, g  x, f8 J
set-current-plot "Trends-of-Local-reputation"
; H& B  D3 b, q( v% s, dset-current-plot-pen "Honest service"+ r- @) X9 ~5 e
end  ^$ |! ~  A9 `$ D" v
/ I: e, x$ b- S! I8 h
[ 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.
: X0 n9 {& A5 d" r1 m7 z; s/ X# a7 X* c8 \
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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