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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:0 s" j& {5 C4 g1 O
to do-business 7 \  N, C6 ^" T7 f6 v' n& Q6 X" \
rt random 3607 d' p/ x4 M, h: I* q( W8 [) I+ }
fd 1# g7 E. @# w, R2 n& H, P
ifelse(other turtles-here != nobody)[% H# R0 \$ Q3 a' N: F) c
   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.! {% b8 r, ^8 [5 j5 K. e
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
% }( j. B5 I2 w; F& h3 X* L+ {. J   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer: X) s2 W' V% w. \( m% g2 T
   set [trade-record-one-len] of self length [trade-record-one] of self
9 ~& ?/ S% x8 t! _' Q   set trade-record-current( list (timer) (random money-upper-limit))( D& V1 f; T+ P0 \( h

0 }7 L% I/ m$ J* u1 N) E问题的提示如下:' M; u" n- G/ o0 D0 D) P; M( w

& C5 O$ R$ {- r  a: ferror while turtle 50 running OF in procedure DO-BUSINESS
$ x3 O9 X: W' q  called by procedure GO
: d; Q! p0 T9 x2 SOF expected input to be a turtle agentset or turtle but got NOBODY instead.8 E- G: p+ Z! T7 j
(halted running of go)2 r; Y0 K. K8 H, O0 m9 p
5 {3 }( T7 E6 v3 V7 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~~
6 R$ F- S6 @9 x" 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: a  U( `3 D. w4 p
globals[
4 M1 D% ]2 U, [. j8 |xmax# w4 x$ A8 e( J: x, g7 c9 v' D
ymax  i! H$ S0 z/ C1 |! N9 ?
global-reputation-list
! r* r: F2 ^, ^# n/ f
) L; x; P% v5 {/ N" R! R, c! l;;
每一个turtle的全局声誉都存在此LIST
7 ^: {) {* u" W" z5 w4 ucredibility-list3 K* _9 U" @4 u% {  C' U
;;
每一个turtle的评价可信度- C" U8 }# l" B
honest-service
% K2 b0 l4 y% G8 |unhonest-service
  ?& }* i. {. }$ Boscillation
; K7 b6 O: N( S& M& l2 y$ b  brand-dynamic4 s7 T# K! O* @, R. g* ?
]
  T( B4 F% P" _8 O% N- [& K9 G* q! p* B1 q
turtles-own[
+ f1 ~; y5 U; s" _trade-record-all
# ]: Y* S+ A) f% b/ |;;a list of lists,
trade-record-one组成% M( c3 ~- {; f* c
trade-record-one% f% @5 o5 H7 s2 j7 l+ x
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
* `. h3 Y1 p  a, S# k2 \
1 ^! Y6 x/ x$ \0 |. `  e;;[
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]]& e- Z1 e& }7 r' J4 Q* [$ X
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]% ?/ }* p9 R7 N, |+ z# g
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
8 ]2 d: ~7 x/ R' R- @6 u' Xneighbor-total
* F  x+ s# h4 o" W# q;;
记录该turtle的邻居节点的数目7 F, {7 L' y9 o* [. \+ V; j  P- Q% _
trade-time
6 ^9 L/ U( t( }- b9 Q+ @6 N9 f& k: w;;
当前发生交易的turtle的交易时间! n. E& G& t1 v  T
appraise-give& b; @& m# C3 V7 }2 V
;;
当前发生交易时给出的评价
; k6 ?( L. r/ ], D! ^& Aappraise-receive0 H/ `; }- ~7 D$ H0 _" V5 \! ^8 m
;;
当前发生交易时收到的评价, B" h+ f/ r2 J7 t, _1 j8 [
appraise-time
/ ^) J# M! s# _- \( n$ l) `;;
当前发生交易时的评价时间
! F2 i% E$ C/ J( O% j# glocal-reputation-now;;此次交易后相对于对方turtle的局部声誉  t; H  n7 s  ]
trade-times-total* Z. a! [; W! v7 C3 f
;;
与当前turtle的交易总次数
2 J+ Y" L  L( o, K" A) ctrade-money-total& \. K. [; l+ |: m2 @  d& r
;;
与当前turtle的交易总金额
  `1 C) N% l1 M  D+ W0 llocal-reputation
& L, T4 U# H# }3 O" kglobal-reputation
/ p( z* k" T) rcredibility, j: o  L6 @. H% D( F) m
;;
评价可信度,每次交易后都需要更新1 E) ~' e) ^- M- w+ f% I) O+ {
credibility-all
) n" e, N$ s0 e1 V1 ?;;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
3 l6 Y) c( Q" W* o) f- t
' @+ p* r9 U$ Y4 I/ p6 E;;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) f/ M# O! a* O. P" D% h
credibility-one
- i$ A8 G8 `" D" a+ x;;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 ^$ Q$ E) j* k, [+ ?" ^7 q. U5 [global-proportion
: i, m2 s! ^7 K. n0 l+ @customer
# C. `( Q$ I8 v* q; N: Xcustomer-no) r- k0 F" w* f% T
trust-ok& x/ z3 b4 [4 g* D
trade-record-one-len;;trade-record-one的长度( F: _( g; {6 h' d1 t
]- r/ o0 [% I3 d$ P, G/ Y
% o$ P& L$ a  n1 m7 N) @9 {+ u
;;setup procedure$ r# M7 ^% T. H! _" k6 h  M

3 o0 C" s2 J2 r. o: \$ m; ~to setup. v7 P$ a+ A3 k

! h5 }4 W! g* ~9 W" gca

  M# Q3 h( I0 I4 x( J* Y6 M' Y" x4 J6 D$ O% W9 Z7 z
initialize-settings

4 T( u4 W' D+ P9 t  E' \% o& t  c& f  F: `  @7 }; f
crt people [setup-turtles]
2 r! Y# {2 a: [- x

7 D0 [# x' z+ a( k1 h, c1 R$ Sreset-timer

: \/ w$ }! o: o8 ^$ D- P
9 a( f4 T3 T2 apoll-class
( V, ^) ^3 Y3 [2 n  h8 z

3 ?  x, }# X1 i( @; S% K) d4 k1 vsetup-plots
' ^+ h7 Z) v8 P, {$ @7 V+ k

" d* ]6 G! P8 z% E6 V4 V3 zdo-plots

8 \" h% |: G& T7 j4 [" f6 m& Fend7 D! o* c# T* F, B! W  A( O1 `
+ Y5 A7 L  t) g, D
to initialize-settings, j9 q# U( Q9 d( I9 `. a& b

; A; E3 c8 x1 _1 Z+ C. p( e* Aset global-reputation-list []

) i. [# e7 {" b' }( m% I4 {( O) f5 ]6 ]: h# R6 C, k& Z$ L
set credibility-list n-values people [0.5]

' e+ ?, D/ L# q; v2 p' e) M$ a8 {. d& e# f: e( M
set honest-service 0
" d) x) D- M) X, L; B) \
! x3 y: c; u: i) p+ c0 X
set unhonest-service 0

; C/ x$ ]) l7 p; L9 B! l, W6 E# P
) g1 |2 B$ K; C# e, @set oscillation 0
( _2 Q+ E( \4 p0 J
9 I5 X# V$ \' u. S* y
set rand-dynamic 0

) D3 \" _" x) @end. b7 X5 {3 A9 M  F

# E& D2 z* U) @2 [7 {2 w4 Pto setup-turtles - P9 R( R! O; w5 P
set shape "person"7 _; B- J9 E- X  f. \) `
setxy random-xcor random-ycor( E" [$ m+ R; @1 ?) I$ y! c3 `
set trade-record-one []
3 Y) U# Y2 K! Z, t% [

  ~: J1 W, L7 ?" B! sset trade-record-all n-values people [(list (? + 1) 0 0)]
5 S" C" p. R6 ]  g$ j' F+ \
, P8 f3 R+ ], }- z5 M" o1 n
set trade-record-current []
) @9 e0 ^# h( g1 e; _4 g% Aset credibility-receive []" }% r* y( X  b9 y2 ?
set local-reputation 0.5
8 L! x+ p7 o9 A0 E" S. kset neighbor-total 0
  z9 s$ f; }% W8 W1 k/ tset trade-times-total 02 z7 U7 V& H& x+ E& @% O
set trade-money-total 0) M" v- ]3 ?! W; B1 B
set customer nobody& o. y1 c3 D( y+ o* G5 v4 W0 T, ?
set credibility-all n-values people [creat-credibility]# B. J' Q2 j' n; ~, _: w. q% F
set credibility n-values people [-1]
$ U$ k5 X- C1 @# Z2 o0 W0 dget-color
2 G! ^1 O" O* n  i- K. L$ G$ v
: T) {5 }  d0 Y+ b/ l
end
. J0 [. P) z* `/ }3 N5 u8 f6 g" O; b- q2 U& Q
to-report creat-credibility
5 B; ~5 p6 l4 n9 d' L7 J  H, `report n-values people [0.5]
9 r4 O! g7 i# `  \1 V2 z; F) M" c( uend) n  A+ ^4 n/ c7 B
5 ~# V2 B, h6 g* }( P1 I5 b- g' k/ I  _
to setup-plots$ z5 N' C' T9 \. v4 i

3 u. l2 w7 j$ F1 O% {* ^5 R% ^# Bset xmax 30

0 J1 E* t+ ?$ g( c
6 J7 \" Q! j! p4 O9 ?. s1 wset ymax 1.0

* j9 v2 v/ X; P) ?$ f( g, o! [/ q: C
clear-all-plots
2 H/ f* f1 L0 h7 F1 `6 i6 Y
# Q. }  m' P" o9 ^7 e8 }
setup-plot1
+ F* r2 Y, D( r0 u) |5 N% D

% [4 n$ I  \- v+ jsetup-plot2

! g9 S& Q; @4 I( N3 A) A* e
/ F' o6 J9 ]+ v3 Jsetup-plot3
2 ]" b8 r2 y4 q( O  o9 x5 i
end: q; H# q$ n5 @; d( \

) Y' x. q" M6 F- y;;run time procedures; `- |2 p/ L, q. i. `
- m6 r. Q+ O7 k& i
to go6 W7 b! X$ m; v
# \: ~: P6 m- `7 h! W. O& o
ask turtles [do-business]

4 P0 N9 W# O, H3 Y+ o9 u( J9 p: kend& A5 s2 j  q3 E. K

8 U0 S5 E$ x4 q1 `+ F- G# b& Fto do-business ! n. y) W8 o9 B0 p; G8 [7 l; D; q
+ t% G( b8 Z  O' H" ^, C1 j
9 z+ ~( ]- N$ i" r$ ^. Q
rt random 360
/ H. h% y. A8 t8 a  K

1 s# p* }3 Z. L& K$ ?/ f6 cfd 1
2 ^) \3 u9 S4 `8 H8 T% f& w+ H
5 E& T( m& A# w. j, b  n
ifelse(other turtles-here != nobody)[

% ?& v2 e$ \) z0 G# c! ~, ?% m! S* a$ a$ Q) K
set customer one-of other turtles-here

" _" `( o. |  @
2 O; C. U! v; T9 O* w( J1 K# @;; set [customer] of customer myself

6 Z* @- G1 U) _/ S. |2 C8 B/ J) G# q1 X8 a- i
set [trade-record-one] of self item (([who] of customer) - 1)  @' M. w' [9 d7 R7 p+ @/ U3 ?
[trade-record-all]of self2 L; i  K5 \. l6 X5 [
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
1 T  Y% c- ?$ G
0 ^" S) A& D5 q4 }+ G( u
set [trade-record-one] of customer item (([who] of self) - 1)( i# q) [& y, k+ Q  t
[trade-record-all]of customer
4 U( l. w1 i# {9 _
6 r$ B7 B1 F! x
set [trade-record-one-len] of self length [trade-record-one] of self

9 [3 D9 q" s8 w% \' D( q) o; Y
/ V/ [! Y7 o9 J; g! v- q2 r  [: q( w+ tset trade-record-current( list (timer) (random money-upper-limit))
! u3 B0 C% f: m3 Y  q5 R1 e
" a0 ]' K/ M! I6 a% q8 K* l
ask self [do-trust]
7 M  U' r, z2 C8 s) j& a2 |;;
先求ij的信任度0 w6 O1 `1 X& X5 V% @& s
2 H7 Z0 Z1 D. J
if ([trust-ok] of self)
) R% E8 G( |5 h% ]& A;;
根据ij的信任度来决定是否与j进行交易[* X! t: e7 }9 @% O' N6 w# i# k7 ]
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself. k( q( @& ~4 ?

" w4 i8 r2 @% [: d% w/ R[

- R3 x6 S! m$ Y6 m: r* X# K/ T4 n+ D  A* Z9 |
do-trade
+ }6 z( e+ z: Z  r

$ ]& Y& D7 k" M5 q- Q( c$ D3 L. ~update-credibility-ijl

  _( O/ Q" L! p4 i
7 r( W% |2 @9 K9 k' R* cupdate-credibility-list) c1 M( H8 @0 l( O0 B& v

9 b6 z7 U# K1 O4 Q& f/ d2 d3 W/ s5 k2 W
update-global-reputation-list

$ C' s* K. v' l# e- D
' k; l1 ^+ d2 ]& R* Ypoll-class
; s9 }( i* _1 |* l/ j) I3 C, U

: }) \  s8 I, R; L2 s5 s9 `get-color
# a7 b; H8 k! P7 l" |# i/ C1 q
! F, A5 |, g3 ^  {: H  P1 ?( r9 U
]]( Y4 {2 j2 Y3 ?* a4 |/ R# K
7 Q5 P- l; n* X( [) U
;;
如果所得的信任度满足条件,则进行交易: }1 C* S1 z: y- E3 m: ~

& P& U1 d2 y/ d  V' z. T8 E[
4 s% g" U; _$ S5 |( r

* {/ o, s  ~/ f: yrt random 360
# k! V. S4 @2 A  W+ s  I9 @# x( W

% o' O1 O+ }  D  s6 H) efd 1
* w# ]0 r* l2 F% W3 V, s

$ w5 W) z- ^' D2 l]
: b7 v6 t" B! x- A1 N' h
8 g9 R* ~0 H2 l
end
! Y7 o0 E% G. O$ U1 P# |2 r
$ N* w8 o$ Q& j: R" p
to do-trust * s9 P4 Q/ ~% r1 _. o) o9 a, {
set trust-ok False- w7 O5 p% \7 M2 [1 |
& W/ J/ H3 {% v) B& ]* Z
  _3 I/ j; g2 p. j; K3 u) O; q
let max-trade-times 0
5 g8 w5 C, A: @7 I6 P- i- N' ?5 h% O% e6 Zforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]8 \$ O  Q9 X+ R, J+ d/ Y# |
let max-trade-money 06 ?% v& h1 ~! K. ?# k6 L
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
; A* G$ _; m  d6 l$ jlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))) K$ N0 v* N8 |& h
/ F5 w& v) n9 P
  L) l& s* |; E6 u) @
get-global-proportion; \# x) R# k' m. U
let trust-value+ _* \4 }0 B/ G9 G' r
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)

- E( `: l; M) Pif(trust-value > trade-trust-value)
, o1 p! h3 f+ c  n9 n2 D[set trust-ok true]9 m. r+ H  V8 X6 U+ V" P
end
" ~" i% \4 N+ q1 ?. Q/ ?5 v6 \
1 `! r- X" m" a. k+ ^. x) dto get-global-proportion
  A! o! ^0 W, {+ Y; L1 iifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3); U' u$ Z, S* [" u" L4 b
[set global-proportion 0]) H" q/ G7 c  S- H; N% s
[let i 0( s9 r) J' v- y0 q' t; A
let sum-money 0! P9 S2 t: r! I, y0 \
while[ i < people]9 N9 k4 b' A7 d" s4 S0 I  r
[
6 f( ^# b: z, j) @- wif( length (item i3 q: r# h- ?5 R5 `; H
[trade-record-all] of customer) > 3 )

/ ]4 D, F& K; r5 K; ]& M4 h[
& U& Q' L6 }! I& K$ Vset sum-money (sum-money + item 2(item i [trade-record-all] of myself))% A- k/ i% D" v6 Y( H% F
]! d/ D" ~' x: V3 _
]
9 E5 A4 A- T! T3 clet j 0
+ R' U+ r* k3 ]/ s2 Glet note 0
" ]0 K$ r* k$ P' Qwhile[ j < people]! O/ g% U4 s% o$ p8 D( R/ Y
[; F* N4 ?' P# g# t( m
if( length (item i; \% q! q' Y4 P
[trade-record-all] of customer) > 3 )

% h4 p! W: T) ~, I4 l, Y. v[0 B' ^0 U* P8 A4 w1 {# }
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
5 i; z  U! U5 r/ U! W[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
8 s- B' p! R8 Q& m[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]' w* `: r7 _3 P& N, p* I
]
( {! O! l, J3 E# I, c5 g3 S* d$ _# @. []
: M) \8 \& E4 ^2 ]1 Y7 Z9 Rset global-proportion note
! ~8 c. Q  `# Y4 P]/ R7 b1 |2 f7 G7 k8 ~
end; h* o  H. c- B3 W! k! G/ Z

1 O; @" T0 I/ K4 q8 jto do-trade
, F& b' t5 n; o' Z9 p;;
这个过程实际上是给双方作出评价的过程
5 E: ?" Y) G) E  I5 F9 P2 wset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价8 ^5 V1 k. h: t8 s
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价" P8 C- _6 M/ B3 V: d: t7 E1 i
set trade-record-current lput(timer) trade-record-current
. ?' r# N1 q$ E, v3 m4 U; H* P9 n;;
评价时间. H1 [4 G7 Q4 [2 C$ v- i8 o
ask myself [
1 U$ s6 q5 E% M! zupdate-local-reputation
/ n4 A# J& w$ l* {. nset trade-record-current lput([local-reputation] of myself) trade-record-current
3 [2 N9 n0 |" V$ P; h]
' r: r0 n4 t0 R6 y2 Gset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
- ?7 L) Z# \; M0 M;;
将此次交易的记录加入到trade-record-one/ ~8 @% a. H& R) {# ]  W2 p
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
' |1 o; A7 \1 zlet note (item 2 trade-record-current )
7 j4 Q9 j& H2 P8 s. cset trade-record-current
3 x6 F9 [  f- s$ Z6 F(replace-item 2 trade-record-current (item 3 trade-record-current))

6 U! \2 Z3 M+ rset trade-record-current" Q+ E9 H" g! A: {. x
(replace-item 3 trade-record-current note)' F6 S9 D1 m% {- h, V. V

; u; w: i0 e0 c% f) q
+ u2 f" H! s6 E, @8 t' C: h; g
ask customer [
# n" o  U( [# \update-local-reputation6 `: D) `# g; o- \& `* Y! \. C- }
set trade-record-current) R3 ?9 M! r" W& Y4 X; n& J
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
! ~" v9 H( w2 z' J: I/ K' O7 f
]2 u% n) H) ~& z+ _9 X! B7 ]) U& }
& ?; k$ I7 `  |" a

/ S" w' p+ n/ l( m  K- _  rset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer! t5 c: T6 }* |& q6 x0 y8 i

$ Z2 n% }5 ~# |" d# yset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))! J6 r* i. L2 b4 T
;;
将此次交易的记录加入到customertrade-record-all
3 ^+ H1 F5 z5 y* X* \end
6 `1 b0 k( i8 W% z$ c5 J" `
9 S8 y8 `# @2 m: ?5 F  h9 b5 Y( sto update-local-reputation
0 v/ j. X6 e$ r, _' c* K+ E0 Mset [trade-record-one-len] of myself length [trade-record-one] of myself
9 l7 B# o  n' ~/ |
, k  q  H+ O* ?& S, l" P" b8 t( o; F" p
8 p/ A% V' _% D' W% s;;if [trade-record-one-len] of myself > 3

: p$ v) t* a) Nupdate-neighbor-total9 \6 y; L3 B- a6 W
;;
更新邻居节点的数目,在此进行
9 [0 h: R% E1 [/ C+ U8 o' Blet i 3
/ Q( u2 ^- R) @let sum-time 09 F$ A  _6 r; I" a* ^6 ]
while[i < [trade-record-one-len] of myself]
) O; ~, J4 ~, u[) t% t% B+ I6 o( C  y- H
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )2 I( a: \4 a' p' X" c$ w
set i
0 z' f  ~0 M2 ]- U4 I( R6 S( i + 1)

7 L7 t% G7 S' ]$ J& g]
; j8 q. a3 I7 c& M( t% ]3 i3 R7 B# \let j 3
9 G7 _5 B  J  E, d, @let sum-money 0
3 F4 a5 s* b6 o7 E; ^# X/ y% g1 @while[j < [trade-record-one-len] of myself]7 |3 s  {/ I' ]
[- w, \3 |$ N3 S! h7 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; k4 z, K0 w3 R9 p, N. |9 `
set j. [2 F8 a0 F5 ~: G7 j: i
( j + 1)
4 G; O9 G* t# N" v4 ]* ^
]
) s1 ?& F3 r# q/ glet k 3
. F' ~$ ]! \6 z6 d& Xlet power 0) M1 G, B8 Q7 W6 s, z5 P
let local 0) v6 t  A  ]6 L  a; O1 E; m
while [k <[trade-record-one-len] of myself]
0 }7 b$ s' ~# U$ p[
) D! Z) Y8 k4 Z. I: K1 m8 Pset 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) + j6 I' S: @# X6 M! Z
set k (k + 1)
& w5 M/ R1 M" m]; Y. B) |+ A1 A1 e
set [local-reputation] of myself (local)
2 Z3 {/ h. ^% t" y7 T* f1 E. Jend
1 M4 r* J) x; a8 l4 s* w6 ]# a7 J. a" O. g/ C3 ?5 k
to update-neighbor-total
) N$ p" B$ P6 H3 h  F+ v7 G  J4 G5 k1 b0 M6 ]
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]6 C$ P/ \# p. Z0 R

) E5 g# N% s# i3 r+ T2 x3 H* t, ^
$ C# w; ]- c6 f& f
end% K2 z- l2 u4 U4 A! V- j: Q

; }( n" c- K0 e, Nto update-credibility-ijl
# Z7 e+ |! S6 ]8 o% S  w2 z. ?; l, k. E3 q' M( p1 P1 i
;;
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。
. U) S& n  B. y% x. elet l 05 f7 y1 G1 V1 M: f+ C
while[ l < people ]$ w1 r0 H# H; b0 I" Y# U) T
;;
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
" H5 N+ S' k! C3 w0 M8 R: E8 ?, p5 N[
$ Q$ p8 D7 J( u. T5 a; t: O3 \let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
# j+ ?9 y# I' n# b1 cif (trade-record-one-j-l-len > 3)
) P" f- q# i% {5 q! 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, Y3 i  ]+ [0 \; }+ ~- K
let i 3
: j  P. R- R2 x1 p, [* l+ @- q2 vlet sum-time 0
: Y, F+ ~7 `; B' I# k3 Owhile[i < trade-record-one-len]
- X/ |3 I( t7 H: n& x[
9 G1 k7 t  @7 z( ~: B7 o) Cset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )8 E3 v# K% `$ t. x0 I' f7 N
set i
# M- V! e" w, Q" V( `; @0 U( i + 1)

# P4 N: U  b( T+ D3 d( Q$ d$ c4 C0 o]1 G5 W- O  L5 Q' S2 S
let credibility-i-j-l 0
9 q8 Z# ~: u2 U% A7 \;;i
评价(jjl的评价)
- ~8 w. _* w+ ?% Y& A+ g" Xlet j 3
, c$ z' J  \( l- O) j0 K2 plet k 43 Z  m9 L# H$ x7 q& R7 _
while[j < trade-record-one-len]
- A( E0 B0 N2 s5 h  L[$ `0 k: t; Z' H) Z7 c3 k9 D" U
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 P0 q! T6 r5 W- S0 `/ {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)
1 F: a: A" v2 [* Lset j/ x8 b: t' T# H. r( L; T
( j + 1)

! F9 W7 n% u+ F' W: `; F' @% I]
1 p" S) O6 ?/ Q( bset [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 R6 ?* h( X( O$ S0 e( }( w8 |$ H3 }) k- n, l' a: P5 q7 {
8 p1 G# D9 S1 E( {
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))2 ?) X8 j4 a5 m& I. a
;;
及时更新il的评价质量的评价
9 n! Z5 W! A% N/ _/ V7 rset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]2 w& I0 r3 \. v, w" c) J- b
set l (l + 1)! p4 T: u4 H+ z4 J
]
# a* T( r$ H' wend1 y- X" A) n- B4 u
- q2 |( S4 v$ W0 n. X& Y
to update-credibility-list
; Z; p3 B  B; ?  |6 ^' glet i 04 l- ]5 C) `' h4 w, o
while[i < people]+ Y+ K/ Q. R: l5 @
[- P7 F' z1 n; l, l9 p
let j 0
1 J& j% ?% X+ rlet note 0  z2 e7 c  ^7 H% O8 }
let k 0
+ A" z; _$ O5 i4 P! [2 R5 J% ^+ E# X3 \;;
计作出过评价的邻居节点的数目
/ x, D& C9 d, A' Fwhile[j < people]: N2 I& C% z. [: o: s! q
[
( I* Q1 F: s7 a+ Q  w8 Iif (item j( [credibility] of turtle (i + 1)) != -1)
, [  P: v6 n& z0 D3 h;;
判断是否给本turtle的评价质量做出过评价的节点6 _- c& f% }2 z* r
[set note (note + item j ([credibility]of turtle (i + 1)))
% E  I' n: U, b0 d' i: b( E% p;;*(exp (-(people - 2)))/(people - 2))]
6 a. E) r% H4 G+ k( Z8 V
set k (k + 1)2 \$ Y- D" p  g& C' f# T
]
% @0 X# @; z$ v, y6 wset j (j + 1)2 S: d  n1 `" U7 h2 q9 f
]  |3 f9 T  j8 `( {1 [
set note (note *(exp (- (1 / k)))/ k)
; e5 K3 l# O1 p) `' T7 x" \set credibility-list (replace-item i credibility-list note)
" j" K$ d* r* c* t' Mset i (i + 1)* [/ J* o% H4 q) R
]
3 @+ V- @( }5 wend
  J; A+ c5 l5 n7 Q
8 ~- b+ i: G: I' g& \+ [to update-global-reputation-list
7 X$ U1 `  o1 X& p3 q8 ~, B3 klet j 0
1 d. b( |# w7 |" s; [: Gwhile[j < people]$ Z: m* x0 n! O- J
[
9 |) k* L5 H) O+ Y0 F. Flet new 0% x8 g4 Z+ H1 U; r8 p4 z
;;
暂存新的一个全局声誉
5 U- E! E- o9 n& }: Ilet i 0! y8 a5 g9 U3 Q) ]3 O
let sum-money 0
" |7 @" g$ `- Klet credibility-money 0
# E8 C$ A6 a4 S7 y8 P$ z) C8 pwhile [i < people]. `% O" D, s* b; X
[
; n; \& s1 W' n2 kset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))  ~' `# \0 w0 J2 l: L
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))" Z9 s. O& W/ \" K: q
set i (i + 1): f0 I7 m3 w$ `9 J" j
]
, ?( L8 d8 a- R1 |4 Hlet k 0! `6 H. Z- Z# ]. B' G! z' c% A
let new1 0" k- |, _2 c$ {& `1 g) M. O6 |- U
while [k < people]
8 X2 F, d% c2 M/ |[& M) y6 A7 x+ n! e1 D% w# L- R5 O
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)
3 Z! D$ m* M! [8 k/ _8 V+ U2 n( Hset k (k + 1)" u/ N; m( p! m5 N4 U$ E7 s: O4 s
]
  |. n. T" a  eset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 3 z0 J5 X0 S" K7 Y- \4 {
set global-reputation-list (replace-item j global-reputation-list new)
0 t: \) O8 u6 ~' @% |4 kset j (j + 1)( u: q0 h. u' T& A
]# P& q7 F8 p( r$ k/ l7 l
end
) |- U5 J8 W, e$ p
) ~% {! P8 k, B4 U- `6 f2 J: l( L3 i5 f: Z
( M/ f: n2 c. z, ^& I$ j
to get-color, Y4 ^5 c) A; `5 D8 Z; Z

  z3 j/ _( I' ], Z& ~set color blue

: ?+ S6 \  F( n1 [0 c2 Uend
4 e( J( v- U& ]2 Z) U# s, J  J) g9 ~( {* F; n3 ~! T. A. o0 q- r
to poll-class, Z( y0 N% Z. C& i+ ~
end4 ^" D# N5 `$ z9 E$ b% I% l

, z  e- i+ |7 B. i, |% e& gto setup-plot1
+ o5 N% I4 ]. Y& O6 y# m/ t4 ^6 M) O( C0 R' c2 ?3 d% |4 a( Z* E
set-current-plot "Trends-of-Local-reputation"

2 n/ l9 Y& ~/ |9 I% W
0 G8 p6 X" L  `# x" s8 h* Bset-plot-x-range 0 xmax

/ ?; g) L8 V) G3 h5 m) ]+ ]
9 h3 \* Q; T0 Y( e( W; Qset-plot-y-range 0.0 ymax

9 C  \7 |; l9 k' @4 N  Bend. s. l  _8 X* ~" e- l
. q4 ~3 j  K4 T
to setup-plot2
2 g/ y$ ]5 f# `0 f) _( \* x# H5 U' o2 z; s" Y% C0 \0 f
set-current-plot "Trends-of-global-reputation"
% ?! E- _# K# n. I  _

: X* U& ?( Y0 T/ {6 xset-plot-x-range 0 xmax

3 w2 Q6 H4 w# p% |2 F9 G/ R# b; D' O7 [5 d& h- c
set-plot-y-range 0.0 ymax
' e+ v$ c  l! s1 O
end" K9 I5 B% U2 m/ l) d6 k/ N5 w2 w3 _

" p% L5 Y# U3 W% [0 a9 |to setup-plot37 Q) W! i: w$ p8 H+ r- U
) a; s: s& @6 h" e: {, J
set-current-plot "Trends-of-credibility"
$ O/ o$ m2 J+ G  ^8 O- E3 _: _  C
% f. a5 @! Z1 \8 G. c4 H2 P' X( i
set-plot-x-range 0 xmax
8 K$ Q' G! R; d9 O6 p

; y- W  s1 f* S9 B: y; Gset-plot-y-range 0.0 ymax
5 [# J: d9 e" |) r# G2 S
end6 o* s  r' T6 Z; ~" l) G

. ^7 B, V( X$ x3 z: W, x; @+ tto do-plots
6 l3 \& S& D8 P3 f0 {7 F5 U1 cset-current-plot "Trends-of-Local-reputation"
  d# I6 e' d& wset-current-plot-pen "Honest service"
, H1 g& w* r6 O, C! P8 L6 x0 iend
3 S6 h: Y; @# b5 p4 u& s2 s: s$ F; _# l# p6 l
[ 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.# Z, h/ ?3 C& A, D1 V, M
8 S8 l  S) V. }- }9 s( V/ r  {. R
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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