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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:, g* S- ?/ @$ ^$ l! K
to do-business
2 E' Y& t% E  B7 {" N rt random 360
, E; g) K  x! i; P fd 1  t  |) L( n7 u/ l4 s
ifelse(other turtles-here != nobody)[
$ O2 i9 G5 h  N" ?7 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.
- q- |) X$ \; K6 G   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
7 o7 @4 X, H. c- e- P   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer. g& p& s% G$ I' ?
   set [trade-record-one-len] of self length [trade-record-one] of self7 k/ \+ K9 T' X, h
   set trade-record-current( list (timer) (random money-upper-limit))
* q# R, y* _1 V% x. U  E( }4 m3 e) G( R! F* U8 I: Q
问题的提示如下:" g/ E, c! Z! m, T5 r
& w( {6 y$ ~0 f# P# b1 C; _% s
error while turtle 50 running OF in procedure DO-BUSINESS& R7 S4 e! j, t/ |
  called by procedure GO
. P  A! C4 W: V0 i9 ]OF expected input to be a turtle agentset or turtle but got NOBODY instead.
$ l- H+ U' ]. g( j
(halted running of go)* h, X% n% e" K; x+ N9 \4 t& T) x

3 M, l# y3 i$ C, V: p! J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~~
' E* \" Q+ B. h4 U- Y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
/ w* f; E1 h# Q( Iglobals[
# t( K9 R+ N3 M& `, M  F5 |xmax
4 J5 k3 ?, |, ?! b! R0 g) Cymax
& c7 `# X+ }* u0 Q* Hglobal-reputation-list9 e8 {5 D1 |" V: {3 y9 S
% F/ a) q- c% z/ z
;;
每一个turtle的全局声誉都存在此LIST6 V. W- {2 w! i, t4 ?( L2 M
credibility-list2 S" y% o4 ]" u* I8 t* `
;;
每一个turtle的评价可信度: M/ Y8 o9 \$ W# |$ }3 j
honest-service
8 K+ o1 j  H. Sunhonest-service
1 h+ D- h1 r9 k5 r, n+ [oscillation
! ~# X6 o& R/ i, O( e8 k" Grand-dynamic
' Q1 i5 e, }$ x3 ?9 P1 S# y8 n]
2 k. I4 h# w* E/ Y" u5 S* q! }
5 [! N. p4 f# e8 ]+ t* ?turtles-own[
) _* C! l" i) y; N# ^trade-record-all( R3 C0 f: U$ P: V; r% U+ _  Q
;;a list of lists,
trade-record-one组成$ e- @) }$ D* Z
trade-record-one
$ G1 S4 U* T9 f$ Y. l0 N: R4 ~;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
( q2 [, U3 W# [- i* U3 [) ]7 P1 F0 Z8 r. K: L3 X& C
;;[
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]]
2 o, z3 L% |2 }- Btrade-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]' t  V- l; b3 q3 j2 j3 B1 y
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- j4 ]) `* r  s: C8 M1 w0 V
neighbor-total
0 [: U( I8 k3 Q7 {3 X* ];;
记录该turtle的邻居节点的数目+ R" O' h' _! n9 _4 }/ M5 z5 t* h
trade-time; K5 Q8 w1 p, {9 O; M
;;
当前发生交易的turtle的交易时间: H. E7 @2 [: @/ Y
appraise-give! d/ s/ k. H+ w" v
;;
当前发生交易时给出的评价, G  M! Z4 P; M- U; u( q
appraise-receive
' m1 L& K4 q9 X2 U+ I;;
当前发生交易时收到的评价# f* i2 g) K/ b! O4 Q
appraise-time
3 u* W$ e& W7 K2 A. Z;;
当前发生交易时的评价时间# c' r" `3 ^/ _/ \
local-reputation-now;;此次交易后相对于对方turtle的局部声誉' q; K/ h, Z4 c! N4 Y0 p
trade-times-total
6 w0 }% k; }1 ]; C7 K% b;;
与当前turtle的交易总次数' R6 h& g+ m. V) R; }( q$ U) s
trade-money-total
3 u; u& d( V2 b  I5 U$ A+ Y- u; @;;
与当前turtle的交易总金额
0 i+ I& ~# q9 m9 ~local-reputation/ F, `2 ~( }% a5 g
global-reputation" R# D% f, p: H: P
credibility
  g1 V) f; C4 h; \, @8 S- ];;
评价可信度,每次交易后都需要更新- D% \" s# E- N4 [
credibility-all
) B0 V1 z  Z% r' I% R. g;;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( P  G) {) d4 ?8 W; _4 w# g1 u
  b) @! [& {3 T: c6 m* {
;;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
5 i8 P: O1 A6 K: z5 z- @& _6 tcredibility-one5 J* G+ F' 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+ ]6 m$ Q( z  ]" b6 B( m
global-proportion
% f: H2 e* c9 W4 G( ~$ acustomer" h# _% P" s8 p0 S' U, [# @
customer-no" q1 z* ~2 G, G* I4 j0 k4 l% V
trust-ok5 Y3 [$ J  s" y& [/ ~
trade-record-one-len;;trade-record-one的长度1 m1 x% }' c  Q& T1 N8 J, f
]
, |, d, f, u0 X. t. {+ W% v8 `6 u4 l3 p/ w
;;setup procedure- `4 W6 F  Q" s; P

. N0 Z9 f% V: f! k  h) K  e8 c; wto setup1 m  Z6 o" F. c# a$ m
" l. c+ U3 p3 h$ y
ca
3 j# k5 r& P8 S
8 U! b! n- P$ ?' r; `
initialize-settings

! x- X. ?5 `$ O5 P1 k7 y6 {! _. }
0 P6 L% O7 ], Gcrt people [setup-turtles]

5 U0 E7 I, N  B9 ?1 ?; D* z/ c( j* _+ b) q; f; |6 h) n3 k
reset-timer
8 [( ?: U% J0 a; T+ F* w! l

- b. ~' h- v0 o+ m* Z; gpoll-class
0 F$ S/ q. k6 t; m9 ~8 j' S

# H% U+ q6 M( s" c- e( tsetup-plots

) }' h" ^: L  P! ?
( j4 j9 d+ \' D0 i) Y" Jdo-plots
( D$ X) b) r3 _+ N( o( y! j& J+ D
end
/ ~* t  r$ w+ G; G! B
4 v  `% F- x8 `$ Oto initialize-settings# b0 H3 s8 I" e1 M" P( n

: d& d7 p9 i( D+ ]- c( T8 uset global-reputation-list []

* F* C5 d& E- }( Z( I8 o" @! n$ e( B! q* j$ X1 j7 U
set credibility-list n-values people [0.5]

6 G. A+ V; ^& [
0 @5 p. v/ p0 e  a; Q2 \set honest-service 0

% u5 Y4 T6 Q6 r8 M( l2 X2 [* t" N8 I( R4 C0 }! H& C# C! O
set unhonest-service 0
9 K/ F) ^* z1 Y7 z

8 _$ O( g8 u3 G( Bset oscillation 0

5 T9 l. f/ H4 e+ I$ P4 @
8 W3 D7 J) i; A* d& Q: Cset rand-dynamic 0
4 @4 {8 `1 x+ B, g- V1 O  y
end2 K. b' ?9 b: i% k5 z1 a

* P) {& C7 a" k2 S# a% }% oto setup-turtles
/ i/ N, W( t% a  Xset shape "person"
+ k) \3 N( m0 P, g$ ~setxy random-xcor random-ycor' V7 }2 V0 N  x& m4 @$ C. d3 I
set trade-record-one []+ t8 `+ X! ?7 F* a& K4 h; q
, T8 X8 b+ v/ }
set trade-record-all n-values people [(list (? + 1) 0 0)] 8 p" K! I6 z# i6 t2 L# ]: e/ c# n5 {
8 I3 h( {2 X- z1 a. R; f
set trade-record-current []
0 w, c+ J* v$ Z: Vset credibility-receive []
* w7 x  c3 t8 Pset local-reputation 0.5* T# _8 ~3 m& ^$ E* s
set neighbor-total 00 \+ H8 Z8 N5 r% }
set trade-times-total 02 Z1 h7 l1 n2 z& c3 ^, I
set trade-money-total 0
8 n* t  s  ]& u4 gset customer nobody1 k( Y# e7 v5 s
set credibility-all n-values people [creat-credibility]: L" C# x, @' c+ e" F
set credibility n-values people [-1]
- L+ b4 E4 Z/ @8 Yget-color1 N0 s# V/ T- n# A5 f4 @
( E- s* H1 O% Y5 v2 _  L
end. ^$ Z* `; K5 d" q0 Z* S% A

- y/ [8 u1 [/ y$ J  g3 jto-report creat-credibility
  i$ R  z0 k8 _' {) M" mreport n-values people [0.5]
+ t- g$ w# ?1 t1 b7 ~0 T) Xend. B5 A7 f; n' P7 Z" O1 U
% e5 L2 n, ]9 t
to setup-plots
7 d$ m1 d) W. y" u( \% j
8 B& L: ?: ]: K  L" k% N, fset xmax 30
7 h+ L& X8 Q& `; p2 E$ l+ O

# u" Q# e# S/ y9 E5 Wset ymax 1.0

5 N9 j6 x' m9 f( s- E4 O% \. V0 f! N$ m. a, B% E5 r
clear-all-plots
" T( x4 q, c% S: F) S' K

( r* @2 Y: b4 ~0 u9 v7 @1 S* |0 Asetup-plot1

( Q9 h: h+ |+ u/ Y
! C9 o$ P7 v+ W6 ~setup-plot2

! h, z! Z; ^: k; z6 _
" [( _* V' M$ u2 z! Y9 K" msetup-plot3

, L' U! s% z! M" Uend  m7 F. R7 z2 U) S, i
6 K0 H, y' \% u
;;run time procedures
7 v& x- H& _0 b: z- ?7 s5 x9 N
  W3 E( X9 ?3 i, w) Yto go
8 Q6 V# W3 G4 i2 Q- k; [  F0 a' [, l* V, B& H, [9 ^5 _
ask turtles [do-business]

4 g, l1 a' E$ T# dend- G- e" D( `8 T/ d( ~1 D

6 A5 |8 S5 }# i6 v+ _6 _' wto do-business 6 W2 ]9 I; J& F2 j& ^
8 `5 e$ w& k( g3 [0 V  T

7 w7 R# Y9 Y& L2 Irt random 360
9 |3 y1 A) {  i: l
/ v4 `. C+ E% I* m7 G/ }
fd 1

3 s& p: \, c4 ^9 V0 {7 J, o7 I8 X8 O" [
ifelse(other turtles-here != nobody)[
) \/ ?+ J1 d9 b* X$ @! d
' a+ A; q! ^2 \' V
set customer one-of other turtles-here

! \7 t2 l. d( H0 u, g: M2 v; F* k
: l3 T. _( z; F2 ~; o;; set [customer] of customer myself
, V: s) y; W6 D/ x) A

8 `' {4 b& p; |set [trade-record-one] of self item (([who] of customer) - 1)
) S- E  q4 j5 H$ x/ J[trade-record-all]of self
2 _5 M" X, G5 e2 R3 I. b) S;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

6 a% Z9 U8 Y) e8 V$ k" N- I* u. A" a! |
set [trade-record-one] of customer item (([who] of self) - 1)
% r4 e1 w) z5 v9 }[trade-record-all]of customer
% h, |$ ]" H/ v; T+ ~% }, p

2 z! @( ]; e" i6 y* Qset [trade-record-one-len] of self length [trade-record-one] of self
8 `. Q. y: [; s/ {8 ]) i4 B
0 T, O) a# J! r! j( f, M1 r/ U
set trade-record-current( list (timer) (random money-upper-limit))

7 Q0 p: Y3 }; ]7 b4 M  o5 z+ `/ m9 p" A! y
ask self [do-trust]
) |% q/ h, b4 r3 j) d* b  u8 ^;;
先求ij的信任度
- e3 u0 S' x7 ]  ~; Q! s
  X! W, {$ x- H5 _- Z/ D4 Uif ([trust-ok] of self)
6 A- k* i% D3 D' F6 o- P;;
根据ij的信任度来决定是否与j进行交易[
0 ]0 ?2 c/ \) I' T4 N% }' xask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself% e; a0 _/ _4 Y; h7 Y

$ a* k( T* a# c# N[

! z+ w' n4 {& ~( B1 N) H. k. j6 u; J$ i
do-trade
* p- F; B# W6 V
6 a# w2 M' ]" i4 I! E$ w
update-credibility-ijl
1 b; B' E3 Q! s/ u* p% M

' R: {- g* l$ d* M0 Nupdate-credibility-list2 J; c! x/ ?1 y, S2 D1 V4 [" \

. c$ H0 G: J. j5 ]  P0 V! r- J8 P
: \" V# r1 _4 z; K: T) Lupdate-global-reputation-list
( G. C- F( l- O& f

* s$ Y$ b+ M7 K3 g, D  V. Jpoll-class
1 O7 S5 A: ^4 Z

7 c. g7 d4 W  P' mget-color

; p& l3 W1 l+ J$ g( N; O& k3 K' b
2 q. }2 ^% L8 l* E! b]]
) L1 D- @9 B+ L
1 S5 t' Y3 _( F; _;;
如果所得的信任度满足条件,则进行交易- |$ }- X- Q& G+ w) r8 n

& @, s0 S3 Y' ~( W, s[

' {2 a; J$ K( M0 g! x9 s% j, M
) s5 D- q- Z. L6 Hrt random 360

$ \* O" ]; T4 @! _: Z& Z
* P2 f8 V+ n. A4 x7 m# _; n4 Tfd 1

0 {6 C' I) E) C, p$ Q0 o
# {; [% c- I1 [+ r( t]

% ^' o+ ?& i) I) U$ k, j4 ?/ w: I0 C
end

6 a* E0 q2 q1 A! N" y' f" L* k- {! s' G
to do-trust
; b) d; K1 R5 H9 Z' d0 }set trust-ok False
" Y9 W$ f. w$ `) d, P' O8 P; G( ^3 G; {* H& y
3 ^7 w, n$ ^" A; E1 J$ x. s
let max-trade-times 0
2 i  i' ^7 C7 z7 D4 Wforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
- c& L8 F9 l) F1 i7 d) t! H) D8 P9 ^let max-trade-money 0
& m- |5 \* n$ J& Oforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
, K: i& B' e" `! Tlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))) o7 P, ]4 s9 G- @+ b

2 Y0 L& j5 j6 }" O( B' F* ^2 c1 J
! u/ w% F/ Q/ V% d+ c; T
get-global-proportion* r1 n6 ~( a8 \/ y( b
let trust-value
# `1 @% I* M/ Q" J4 L9 nlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

: R. X1 w9 o  @6 t  Y- sif(trust-value > trade-trust-value)
" w  }; L6 R+ H! ?- T8 @! y[set trust-ok true]8 F8 G" h! w, E! R% x
end
7 e* K, P8 {. \' G4 Y; @
0 [4 m6 @0 l/ d; e3 ?: q+ Nto get-global-proportion# i0 ?* M: |: M% m6 [' p* e
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)! B" H( V( w1 a6 |9 b! j
[set global-proportion 0]+ o( u3 z$ P) ?) E
[let i 0
3 V7 H: X" V7 U8 ]let sum-money 0
2 \# q& [4 E. r$ O/ Swhile[ i < people]
8 \  D; g! Y# `7 C[' {: S' F' W4 H, s2 M
if( length (item i) u( T. x  |4 v5 G1 `; F
[trade-record-all] of customer) > 3 )

* s6 Y5 {7 M* m# L# u& |3 I7 H2 U[% H4 e8 j2 J8 _) O
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
4 o7 _$ A- u- g3 r! {]
; [" a) i8 z5 ~]
/ h9 l6 V" S7 k: N/ ]& Qlet j 00 Q( F' V5 P0 T! }' p
let note 06 x7 }- m) q, p# F
while[ j < people]- @) t0 M9 w% p! p0 I/ }1 b
[
# `$ B0 C* f5 H# ^. A) ?  {if( length (item i
. u8 D' z8 j4 f+ b: f[trade-record-all] of customer) > 3 )
! ~) A# z* y6 n) u& C. F& {0 {, m
[
% y. h+ V1 }) `8 Gifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
) G- C  s0 V! c" j5 B2 J[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]  p9 N9 w; T. E, S) a
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
6 s0 e1 J% ]" |' q]2 K; B8 s+ W/ a
]
; f/ G( L, V9 b7 E- j" E( I+ uset global-proportion note. g" f4 w0 m5 t7 X6 J. I$ s
]
/ p: p  E$ m6 p+ L1 c& j8 s" w! x0 Wend
$ j6 Q# d9 E/ O5 r7 j( t9 p9 @7 u8 H  u  ]! ^
to do-trade2 r: @- D1 i0 ~
;;
这个过程实际上是给双方作出评价的过程
. C  o% G5 g0 B) H. L! bset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价& A4 H! C6 W+ [2 Y9 G
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
' ]* P: J, Y0 q- Mset trade-record-current lput(timer) trade-record-current
' c$ m4 w9 V. T& A% l1 M4 U' `;;
评价时间9 ]7 J3 [! [9 R6 ?5 q
ask myself [
7 D6 }! s9 n' \; k* z0 dupdate-local-reputation
0 p9 x' Y$ z. ]$ @0 ~' [set trade-record-current lput([local-reputation] of myself) trade-record-current6 T! g( o; P* P. E
]% w3 L1 `! P! r9 L
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself8 n$ S  U3 H- Q% ^; C- E' ^
;;
将此次交易的记录加入到trade-record-one- O' e9 P' Y8 J. n
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
$ L3 J3 Z/ C$ z, Olet note (item 2 trade-record-current )
9 L4 k0 _: T1 E- l# t- [$ bset trade-record-current4 T5 I% v2 h& J. Y% u4 u
(replace-item 2 trade-record-current (item 3 trade-record-current))

: a" H9 R: X+ ~% ~; O, [$ ~5 ~set trade-record-current% Z! D5 g& w# v5 v0 Y5 [2 g
(replace-item 3 trade-record-current note)
2 C: W# _0 m  R# N8 W" j
9 t3 P( @# e- ^) s, |

) s; t( X& h. C  t" [' _' F) O2 q. Lask customer [
) L& ]7 y  Y; B' L1 N& P# F4 jupdate-local-reputation
) `4 ]( D# I* q1 ]0 b# oset trade-record-current; k: O3 F& C- R1 d, L, F+ F' Z4 x
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
( x  p& L% H7 [% m/ _, v5 O7 P" E
]4 X5 q/ s0 A0 U8 r
% S3 P& \( e, y- r/ t2 E
/ P' n5 N. G7 r8 |, P
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
1 ?5 X- r! U5 u% P/ \
7 J4 U: Q9 B* x5 i/ j+ J
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))7 {6 m, H3 [0 G4 V" b
;;
将此次交易的记录加入到customertrade-record-all' p4 I+ w9 ?+ ^! F3 h
end
3 M& e8 V0 l2 A# L' r4 X6 z5 n8 l
. @& B' N3 Z1 y1 o2 }to update-local-reputation  h$ d5 O. g0 ~$ ~' {; a. L
set [trade-record-one-len] of myself length [trade-record-one] of myself
& x6 C1 i  z& Z6 K! Q3 J* j  D$ Z  V$ h1 k; d

; t- O* ~: W" \. I: g* i;;if [trade-record-one-len] of myself > 3
- a5 [4 r6 X4 z2 m; y( V- A
update-neighbor-total
! o( M1 G& j- y  c, m+ c* A;;
更新邻居节点的数目,在此进行
4 x- m5 j% l$ |  ylet i 3
4 u( _- j' N+ G4 M$ @let sum-time 0! ]5 [8 f" n# a3 H4 C$ L7 O) p+ M
while[i < [trade-record-one-len] of myself]
/ _# T* E! a4 p3 y! T. s( J6 v5 W[
7 a3 {' G; z9 b$ Z3 k/ o0 R: Dset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) ); L  R4 H, f  B4 X) {
set i
/ ~0 Z8 p" S: s, q7 l8 d. g: \4 S( i + 1)

1 d  P3 f( Q3 ~1 L7 X7 A$ u2 ~]  `0 f6 U* {, i' L, _# e% [1 L0 y0 T# q
let j 3) {! K" r2 \7 T& Q
let sum-money 0
5 i/ @$ ?& w/ @while[j < [trade-record-one-len] of myself]
* H2 n& c6 V* m9 G% S; m[4 W5 R" `0 s% M$ g6 C
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)1 z$ V+ o' c" u
set j
& J0 ?- q$ }( g+ y; Y( j + 1)

  w& K7 [% S$ F7 n: U2 Y]$ P) _* I# j9 T8 N; ]! f* k8 `
let k 3
7 B( y; A# v( d' c6 \  `4 Z* mlet power 06 @6 l# u- H; z+ A
let local 0
4 O7 M" C1 }. V- ~while [k <[trade-record-one-len] of myself]# d$ U% B* U6 C1 I6 ~) f8 Q7 _
[/ k0 v/ i) v, `5 S
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) % j  A/ s/ W" H* a9 ?. \/ e
set k (k + 1)% @& a. d# b" I  Q; l" p
]
$ F) T5 |8 z# E+ e" E% Gset [local-reputation] of myself (local)" @5 I8 l4 m+ Q5 [9 s! |1 }
end2 m5 q" N1 h* ^' p
% D! Y1 C$ j  O: [
to update-neighbor-total
5 `/ \9 I' p% z, y0 @% I' X) |' k& V6 o
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
& |* B. O( s0 K* |
4 L0 J" G; ?9 u6 q, |+ K

  p- }: G( y) ?8 H. R* T7 c$ ]end
3 b8 l0 \. Q2 k- s& O! \; {( [9 \( j% U0 J2 _8 r
to update-credibility-ijl
' @( w( Q1 m4 R$ [/ V( g  I$ I/ D
;;
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。
7 N  k# N  f8 w: Y5 _6 s& Flet l 0
, C* b1 s  o; kwhile[ l < people ]
0 [0 P$ q. z9 }( @0 }* 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
, X- B1 J  y% a/ O[# }1 Q$ l; G8 M( n  |' z
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
- K9 @8 D' g( Z% b  J  Iif (trade-record-one-j-l-len > 3)) Y3 D) g. Z0 K1 T4 p
[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
* v5 h( {& ~& Vlet i 32 @- T. T( q& I/ U4 W+ G
let sum-time 0) A1 t4 V. x: l# M5 g8 n
while[i < trade-record-one-len]6 I. W( b# [6 K( Y
[- g! ?$ o/ ^0 q$ g
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )$ c0 N* g+ M! x* A; f2 \7 q  e
set i
! ~4 L) p3 X3 J3 P$ v: M( i + 1)

. U1 `* M8 C# R]  N- d, k9 G4 `( F, V! S
let credibility-i-j-l 0" }/ \; ?: g) I0 }& u
;;i
评价(jjl的评价)7 N3 w8 z4 R6 p4 r
let j 3
' X' M. t7 J8 ?6 g: ]- M# ulet k 4
$ ^8 [3 ]$ @" m' P& p* c( W0 hwhile[j < trade-record-one-len]
" h4 U* @1 u( X# h9 g  {: w[
9 |) ^1 @0 [% `" q/ ^+ x) @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
: N! T2 c$ d1 V. i* Vset credibility-i-j-l ( credibility-i-j-l + (item 4(item j [trade-record-one] of myself)) * (1 - abs ((item 3(item j [trade-record-one] of myself)) - item 5 (item k trade-record-one-j-l) ) )/ sum-time)
7 Y4 ^% N8 Q& j9 Aset j# K0 d' m% L" n6 E
( j + 1)

$ \8 u* S5 O2 l2 f]
& d8 t6 R& t" j8 V8 Aset [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 d4 @/ b7 k- ~+ \5 S3 n
$ v1 _: k/ w  m0 }/ x

. d" w) E  }5 P$ n$ ilet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))3 t" d, u( |# Q& @( v+ P# A
;;
及时更新il的评价质量的评价
5 s# t' @2 `. t9 y; w* `3 sset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]8 G9 T8 `( D* I3 W, j4 p
set l (l + 1)! m- l5 F2 Q: n! S2 P5 O4 ~- q- R  f
]; q$ S6 z* E' j" O
end
+ M% ]1 s7 l# D3 Z8 {" y  a8 G7 M% M9 |- }0 Y# o/ b
to update-credibility-list
' s4 Z2 V% r" ]5 _. f1 Nlet i 03 J! \# x- D) R# _2 x$ O* |
while[i < people]
) n6 O0 u1 u0 }$ n& ^" d: g1 e[1 n: @, d+ a, k/ f* I2 q* w8 f
let j 0( F( s4 z! @- t9 q: G, W$ \$ I
let note 0
1 t: A% N. T# Q* N1 T2 `/ Llet k 0
) `6 `8 I7 F( P;;
计作出过评价的邻居节点的数目* Q% o( D! R# i2 p) L
while[j < people]
8 `  X4 D2 A' D# a6 b[
2 Y$ l! N& l& o! K3 C4 D! Yif (item j( [credibility] of turtle (i + 1)) != -1)* B) h+ j6 Q! d
;;
判断是否给本turtle的评价质量做出过评价的节点
. t, W! x7 I2 V% W8 o[set note (note + item j ([credibility]of turtle (i + 1)))9 s/ ], V* L8 M% s
;;*(exp (-(people - 2)))/(people - 2))]

% a3 H6 G0 R1 ^# I+ J  Y/ Iset k (k + 1)
$ N8 M/ j2 S! {- }( J6 M% J]4 h0 ^8 W& k$ b7 b9 l
set j (j + 1)
0 _0 V6 d& B" A1 [3 y: N# b+ S]; F# t3 V5 T" u$ ?
set note (note *(exp (- (1 / k)))/ k)
* b5 U3 K. I: {2 Gset credibility-list (replace-item i credibility-list note)
5 \1 r1 S2 \2 e3 t, r  u: P( wset i (i + 1)
9 ^" c/ {# q9 _]/ {; y. W0 D! _
end0 C9 F. w! E! _  H+ V5 y/ d

% H8 e9 \- s3 L/ p! J. c$ h. cto update-global-reputation-list1 P$ J& [% a& i. I2 z  p! d
let j 09 F( `- m. t" J% D4 m5 p* q
while[j < people]* I7 H5 }/ O( G" B% F5 R
[
: `8 [* Q# X& r3 z5 |let new 0
4 I+ k& q( F/ p! P;;
暂存新的一个全局声誉" i4 ^, d2 u5 g$ ~4 J
let i 0) T" G8 p5 j8 ?& y. F
let sum-money 0
% M; K& Q  T: A0 M4 Ulet credibility-money 0
) N" U& M# P& j  mwhile [i < people]  l9 X1 B7 K& ?: k# ]' D
[
. ?! F2 p/ k& ^( |) Y4 _set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1))). O. X6 y$ g' Y, ?& `0 V6 I
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
% Z' P; _$ d) i( O' R3 b2 uset i (i + 1)8 m) `( d/ S2 |, q
]
! x8 I( a# H& [7 a8 B) xlet k 0
- Z1 D3 l3 H& ]  Q; Hlet new1 07 W  f8 t3 ?6 J. J
while [k < people]$ A* B* ~/ ~" l) d0 R" `* Y: u3 T4 ^5 l
[: N* }4 ?. S; g, ]+ L9 L2 {
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)
; q$ z2 Y; S+ l0 m! \6 \8 vset k (k + 1)
8 s1 V6 |+ ?2 J  S]
2 q& @6 ^* ^( }, K1 `. }6 J8 K# c' Q1 O8 \set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
: d* i! c" L; B' X4 B9 aset global-reputation-list (replace-item j global-reputation-list new)3 y% i+ V: I6 o- b
set j (j + 1)
& f9 s' v6 G) V, D, m/ M( x# _]  P- n& K" l4 u6 ~2 h6 F8 v* f- w
end0 V5 ?# W7 r# o
: W; n5 ^. Z* n. {

  z1 Z9 t1 f! S% h' ~
( T2 g% G" N1 a2 u. ?to get-color
& S1 ?/ D: S! `8 N! B$ |
4 k8 s+ ~1 P0 I2 M; v. u2 m3 yset color blue
  x2 H& ^+ b9 D8 T& m2 ?  d
end
: i) C& c2 E7 k" _4 H/ {# j: E# L, g1 g
to poll-class6 M, _+ W& R8 f/ W
end$ s; i+ R, ^8 l. t3 g8 ?) J
0 W+ B2 J9 P8 u- K% l- w1 F/ S
to setup-plot1" j9 B, k) O; N  ^

+ R8 A- {% `* G2 h$ Rset-current-plot "Trends-of-Local-reputation"

7 |' g$ Z' a4 B% {( t
4 O9 i* s$ v: i6 u, R, a: Iset-plot-x-range 0 xmax
2 Q/ N0 L9 [) @6 A6 P: i2 S

( }$ L6 q, [$ J9 Z$ Yset-plot-y-range 0.0 ymax
7 K3 y. f" c' d% g
end
6 M# D: l% g) t4 e& M2 s) H0 z+ |7 L' c, W3 C: z! w
to setup-plot2. J1 ]/ J/ c  F  Z1 g9 U- l
; y0 P2 a$ o* ^9 }
set-current-plot "Trends-of-global-reputation"

4 c+ P' h8 c2 ^
- }; u$ x2 c' ~1 k( @set-plot-x-range 0 xmax

' Z8 V0 t8 Y" }) L' M( Q) y6 e
7 q' y! X7 `+ |  o, Nset-plot-y-range 0.0 ymax

) e2 |, d, C! U- B) D0 t- v+ {end
5 o( [) |( a) j) D, `3 k: S
! q7 T" z. @& ?0 bto setup-plot3) E) D" r: m3 c) D" K- s, j+ q3 F& d

# K! P2 N. s" Z: n! e) E8 o6 y( [; m/ rset-current-plot "Trends-of-credibility"
% G/ [/ o8 j) |7 X/ H
0 R4 f4 v) G3 B+ ?. b2 h
set-plot-x-range 0 xmax
6 y3 f- n- y0 O- }' a" _

$ N$ r: H' M* I2 p2 j( ]" zset-plot-y-range 0.0 ymax

6 J) s. t) W4 [  A% A  F; bend" y* X0 F# a: H: w. F- E

0 _" `& C3 l$ h" _3 _1 xto do-plots3 r/ g! W; s) M* e
set-current-plot "Trends-of-Local-reputation"1 n; T! C. N5 s  m& S$ w
set-current-plot-pen "Honest service"
9 E3 I# `+ t7 ^: v* ?, jend. S. a  S; ?& }7 f

5 N- m/ _0 _# j[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

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发表于 2008-3-19 11:33:07 | 显示全部楼层

有点困难

没想到挺复杂的,我去问问师兄们,不知道你是自己建构的模型还是其它模型的改进,我试了一下好像setup都有问题,别着急啊,呵呵 。
发表于 2008-3-19 11:34:29 | 显示全部楼层

还有啊

发表于 2008-3-19 11:35:59 | 显示全部楼层

还有啊

能不能传nlogo附件上来,一个一个敲太累了,好长的程序啊。
 楼主| 发表于 2008-3-19 12:47:57 | 显示全部楼层
嘻嘻,不好意思啊,现在把附件加上了.4 m) l; ~/ {3 C+ L. c) Z, \, ?

+ C$ _2 ~- I% ?# f" y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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