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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:
% g6 }# s- e$ {* ]' X  Ato do-business / e: f. P- i0 R: S+ H! ?* h
rt random 360
& y0 C3 V* o) l5 l3 {. _$ Q& t  C fd 15 \/ X0 T/ B% e$ n  s( _$ H) g" ?3 r
ifelse(other turtles-here != nobody)[
, o4 L5 y) |: x5 C6 @  Q4 T   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.
8 G+ e9 m3 ?5 ^) Z( e( v. k   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    7 i- c7 W, q, x2 C+ @
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
3 t/ Q# y, T9 J- Q& d' E, P   set [trade-record-one-len] of self length [trade-record-one] of self
" B% d7 v* W( N* G) ~7 ~' B2 \   set trade-record-current( list (timer) (random money-upper-limit))( H& ]; I3 `& i3 N) O1 c4 B$ b
$ N6 V4 s9 |  e" Z8 M2 X
问题的提示如下:! Q( i' M3 P6 h: o0 a

, N! B! v$ [1 {3 Terror while turtle 50 running OF in procedure DO-BUSINESS
! Y0 [+ R3 V, z6 X1 i( y" C6 W  called by procedure GO& {( f" O( W- s; W9 L3 J
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
. V' w5 z* {5 e2 W
(halted running of go)
/ i8 {8 I2 V+ g9 k6 k
+ S5 j9 ^& \" U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~~
( p5 o! K" u6 m) {* P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- R2 d8 K. @$ q) s
globals[* T8 y% x* K4 q, R9 ?
xmax
3 }& u9 v# m3 A  _; k. H$ z3 b) Qymax
' I! `8 d$ P2 f/ h7 Hglobal-reputation-list9 G$ K$ H5 ^) V
3 E( O' H3 I! Z/ b1 X
;;
每一个turtle的全局声誉都存在此LIST
1 m, h+ n4 H! d+ Ccredibility-list+ b+ G! j4 d7 |
;;
每一个turtle的评价可信度; ^8 `( r: ?9 K* N) M6 o) _
honest-service
- r( Y1 O) x: L) s4 G/ Zunhonest-service
7 i. Q; s( {: G' \oscillation
1 y1 g% o! u" Z2 u' Arand-dynamic
1 U' L: e1 }$ q/ ^]5 G4 l$ @0 y  q; z4 y
  d& M4 A0 E  @6 n; k
turtles-own[/ B$ ~6 u: B( S8 S
trade-record-all
5 o$ O; T# F2 ~+ Z4 a;;a list of lists,
trade-record-one组成
+ u* |- Y" y2 f/ A8 }+ Ntrade-record-one
: W1 p; H) m+ b% _;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录+ x( X3 F' ^  E7 I& k  G2 n
2 b8 G" K2 f& v( M1 p
;;[
对方turtle的编号,交易总次数,交易总金额,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]]
" a' N8 Y6 m* ~! C1 Strade-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  q" \2 \. `4 `- k
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
: r  j. o1 R& I/ Ineighbor-total
- k: }/ J: u4 h& G, R;;
记录该turtle的邻居节点的数目/ Z. k  b' R& V/ N* V
trade-time
0 k& h) ?) L# {! N4 I4 L;;
当前发生交易的turtle的交易时间
4 N/ B% Y" c& U* A% `0 Q0 d1 uappraise-give
9 _8 o4 R( `' q3 [;;
当前发生交易时给出的评价0 R! N6 w! L2 p
appraise-receive
. {+ U$ ^3 ?6 y8 q0 r0 d;;
当前发生交易时收到的评价1 W: l, Q* c& Y, X/ x1 f! Q
appraise-time
; T1 w( p; y9 L% ]: H- n) ~;;
当前发生交易时的评价时间# @4 @6 k7 u; r% M) ]8 a  J
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
$ P9 G0 U/ D3 i/ O4 h" Etrade-times-total
) h/ c4 L1 U8 |5 b9 w7 x;;
与当前turtle的交易总次数
% m( B) j9 w0 E+ m- {: atrade-money-total# c; s/ a' S/ I3 ^0 `
;;
与当前turtle的交易总金额
% p* \- F, Y7 ^local-reputation! i) M2 d4 v% J% q+ |
global-reputation
+ ~. p3 i, @" k1 y5 \, V7 v2 Qcredibility
# }- W' b' w( u0 f# |;;
评价可信度,每次交易后都需要更新; j6 y: a7 O( i( V/ D
credibility-all+ g- v1 B9 U3 s* W5 A; h) @( c, b
;;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/ Z! r5 \5 c& J- }# `! }( G$ G
; N& y, u" G# \;;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' E6 V, ~0 q
credibility-one
. @6 ^* c9 v" m9 h# q8 m. `  p;;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
; W0 w" y/ u! I6 j( _( M5 i8 d' Qglobal-proportion: t4 ^: p# {' R  k% r) q5 [) Y
customer& S1 a% n' ~' }
customer-no
5 r% r/ L. |/ G' q8 O! b8 itrust-ok+ q3 c  R' m  S3 x" {" w" L  a- n: z" W: r
trade-record-one-len;;trade-record-one的长度
7 ?. O1 M* c; V0 @* g]
  g3 V( B+ l* t. p
( v& w/ w7 K1 u;;setup procedure
' Q# i! S- A- d) j: T) h+ H& N$ C! W! [5 j- G/ Y, b4 v1 _
to setup7 ^/ g" U7 b7 k" \  e) s$ v7 ?
" z, _9 f8 A3 A% a
ca
9 ^6 J, g- |- C# _! B+ b! j8 l$ }
$ a9 g' h  j9 a
initialize-settings
' ~: \% I* j. e& f
' w7 P9 j( a/ D! P  o- f
crt people [setup-turtles]
$ h4 Z* p$ d! k' F: C

% i! h9 p# r& z3 x2 P# n) Yreset-timer

/ {; P2 D8 i) F5 o; X
2 x& t0 X4 A+ v. rpoll-class

! x" T2 x1 Y5 G8 K
# ^9 Z! E: ^/ M8 k5 o8 y3 N- Dsetup-plots

1 e4 a4 X  ]( G2 c' n
; H0 ]3 J; {+ G  Q. b7 edo-plots
9 Y4 J5 f" K. j# k
end& V& P8 W; B' r6 E1 M6 B

+ y/ m0 g9 U: A- G7 X' P) k7 B- U  D# eto initialize-settings' g1 H7 D7 Q9 Y  U. J( ]/ f, z
+ b, w6 o& T% Z9 |) W
set global-reputation-list []

4 f, ]( ?7 x7 k6 a- o9 C# p5 |. @% `. x- U8 y5 I' ^, K( x1 q
set credibility-list n-values people [0.5]

2 R1 S$ b& Q2 k; C$ g* H) O$ p, \
set honest-service 0

$ w* R. {' P7 ~0 P; T. M- n- f- L) b( M/ A7 m3 v; ~
set unhonest-service 0
7 U. h- W( d6 _
2 J* x# Q' P6 ~7 o+ A9 W/ Y! u
set oscillation 0

0 m+ J5 K3 N# K- d# Q* z! G4 V; ?! c" j7 l
set rand-dynamic 0
5 i+ {/ {8 u8 b/ W, h* }+ r5 X
end
2 z% E( z4 v. J3 @% p1 e/ t' N' Z. f: ~
to setup-turtles
5 Q7 S) }( g( l" j# ?1 zset shape "person"
6 R. R  E; h3 {setxy random-xcor random-ycor) H6 I' S% }9 r2 N( h+ s
set trade-record-one []/ g$ y$ ^6 N5 K  G. c

+ `2 [& ?! ^2 ]' ^6 e# S; {0 Z* _set trade-record-all n-values people [(list (? + 1) 0 0)] . m# f$ |& c1 _+ D- Q
5 I5 f# n3 X, s
set trade-record-current []
; U2 D4 _' Y6 S8 S! D+ tset credibility-receive []
  ?; X. K4 `8 s( A# C" E% lset local-reputation 0.5
; r. p* A+ K6 mset neighbor-total 0& R! y* ?4 P1 s$ |- b( t
set trade-times-total 0  Q: U* [; M! k8 {3 f2 U
set trade-money-total 0. Q8 y5 L5 f5 o' M2 ~( X
set customer nobody+ O' e( Q6 y  S4 \9 {& r2 x
set credibility-all n-values people [creat-credibility]7 N/ `1 ^1 @9 I5 m
set credibility n-values people [-1], X' y& D* z. R4 `+ }
get-color2 s8 g6 b& o5 O' ~8 R7 c

5 G3 r& [0 S) v# N- {1 D/ M. Iend
( [' T! V8 D, t6 X" J6 a' J, x  r2 N; u
to-report creat-credibility1 t, {' V: e. Q
report n-values people [0.5]
4 X8 @6 i+ F# M: f0 _end6 D- y  z0 f5 r" _
8 G+ N8 p1 ?& L
to setup-plots
8 k4 k6 \9 X' a' @0 I( C
+ ?1 E; ?2 b. u% Cset xmax 30

) `4 ]0 a4 f+ H: ]
3 T; \/ `+ d" e! a# e4 pset ymax 1.0
  A8 g( e2 t% }) f
' W: T9 l. {7 \" T2 |
clear-all-plots

5 {: P) }* M  Z, ~9 n8 `8 [; t* f2 Q5 @0 e2 m% C0 b1 `! B
setup-plot1

- q" `0 ?+ J6 d/ a$ \7 \0 l
- n, ?, ~! _& @( Fsetup-plot2
: w* g9 v  Q1 ]6 c- f! j

3 _$ _5 t: i0 J/ C: G5 Osetup-plot3

  d; @8 D% J4 Z* N9 Q6 y7 r& G; Nend
) K9 |; N/ o' M1 v: \3 K& x8 }# `4 I+ X7 _# L- m+ s
;;run time procedures) |, y, I! O2 f1 Q+ \3 w" A8 F
' k7 H' U! |# I  h* Y9 n
to go+ M- K+ T- E7 K% ^, s) S% J* f/ x. p
% K3 M. ]1 K; o
ask turtles [do-business]

. {0 D+ J; M8 d$ i& O3 Nend' D8 ^+ P8 H  S6 T& P; o

- ]! V5 i5 D( c  ~( sto do-business
6 y& b4 u3 r0 ^! @
" C. T1 ^2 e7 A. x9 O: B

; A: [" E, K+ V* W0 Mrt random 360
. w3 z, Y3 k5 @9 L+ O
' m- s  I  f9 S  G0 Q. r
fd 1

/ I+ P8 u  u1 u0 u0 u* N" Z( M2 O0 K4 a+ V" f
ifelse(other turtles-here != nobody)[
. e4 N& |5 `; J% A) t

" H, b* |( L/ C. ~$ o4 k9 bset customer one-of other turtles-here

8 Y. N7 v, j2 y. I( F5 F% o3 \9 t4 }; I' ~8 {/ c( g- P
;; set [customer] of customer myself
) u% a' o! q( n% J
5 r8 t3 C" h1 ^- |* U
set [trade-record-one] of self item (([who] of customer) - 1), M1 g/ B: ~5 f
[trade-record-all]of self
& S) [1 @( S* }) d. t+ J;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

6 J6 f5 }5 D6 K. _4 A
: }1 j% ^! Y  Q7 B1 Iset [trade-record-one] of customer item (([who] of self) - 1)
8 g1 U; E9 v3 \) M; B[trade-record-all]of customer

2 v0 U- o% Q# C0 M* E- T  D9 |, G- u- O" F
set [trade-record-one-len] of self length [trade-record-one] of self

8 t2 B4 c. S6 q& y: f$ O6 S! @9 V! r) s1 g: S1 p1 ~
set trade-record-current( list (timer) (random money-upper-limit))
5 L3 f& R( Y. d: f/ k% V

  S! a- u2 ~! [, s  Hask self [do-trust]
; P& H: P/ c" K/ X2 Y4 L! \$ }# h;;
先求ij的信任度
& Q- D( y0 y, V8 b
3 w5 g8 U: @: M0 p! ]if ([trust-ok] of self)
: O+ l8 ^" k) {3 z7 m;;
根据ij的信任度来决定是否与j进行交易[" U- D& n8 R8 I- o( t( {
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
7 L0 m. U+ @* f& ^' f' h% Q/ b- D9 F1 ]( o+ l( t1 F
[
! E" p4 a' ?# L7 j3 c
9 S) u. u# ^8 D5 Y
do-trade
+ Z# L& |1 ]+ A& r2 N
: k; x# r0 ~3 n
update-credibility-ijl

, Q, M$ L! w- \" H5 Z' n5 R6 R
- I1 m; y) e8 C+ S: nupdate-credibility-list- v8 }% S  P! h
) }2 y# g/ d6 |9 s: C# P
# x$ H( ]; c" L1 r2 ?" R7 X
update-global-reputation-list
" b5 t) j  |4 q$ N( m

  o* k- L  d: U" e. t& npoll-class
0 F0 g4 i" z) w% U1 k9 g" w/ X
3 \7 e) f1 F9 m& t4 R
get-color

* E0 B( {: ]. H' c, |4 Q* A4 G- Q% N* i2 E$ T9 c/ y9 Y. q: C
]]
5 U9 C$ g" d, S5 u, {1 `1 U( c. w9 v
;;
如果所得的信任度满足条件,则进行交易% {4 |6 \1 s5 V
) O" }# g3 A/ T! V
[
6 X; G% e8 \8 ]7 g6 Q) D

% n# U. c1 c9 w" _  h# I& _rt random 360
* c* P9 {+ s5 C  F6 d

9 \' f3 l3 d% e# H3 \* Efd 1
- j- J9 z% V" o- K$ [' r
* F. [2 {0 I. w) E1 ]6 }7 u
]

0 o3 ?+ S! r; A2 d4 C2 l. _
/ b; J3 S. H$ h( A: y  D: }end

+ {7 k$ t% Q1 `9 y: A4 x
/ X3 R8 O4 R) r$ A4 o! rto do-trust 5 S2 K4 b2 E  F5 @7 Y( V- \* H
set trust-ok False
" i4 u+ ], c- D* V* X3 M& I: }# Y1 B
- z, A( i8 o7 }+ p! b: Z+ u

" B( g+ ]. q& {let max-trade-times 05 t( V# D; o: s' h8 K4 i) ^8 g
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
  f& X# e& F6 [# c4 L2 q" b! Qlet max-trade-money 0$ w! B! D" F0 t9 C* j& [
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
* U- o; Z7 l; _: B3 b5 B8 K& Z/ _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 d8 c) c! {; J( F
* F6 e" V8 J8 U& d/ B

, J9 U% v* t5 H7 ^- V5 Uget-global-proportion
' r+ y: ?# _" m" N# ~let trust-value
, t' L2 J  i6 c$ P. f+ ~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)

% _+ t) g% B& g- Iif(trust-value > trade-trust-value)
8 h6 w9 z( w% Z7 J0 y& E/ t[set trust-ok true]( ]4 b$ C' y: F
end5 k% X: e7 B" _0 j2 F! [

  @1 ~: B4 ^! R; Tto get-global-proportion5 g) e, m- Q! e$ l" z% J6 |6 P: |
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
1 r, O8 l; F7 A: b2 Q[set global-proportion 0]  n. D" o5 w% G) I0 l* ?, ~& ?
[let i 0) ?" K4 _/ ?0 H) @5 J/ Q: Y# q
let sum-money 03 L$ w/ B: Z2 M0 n1 i9 V
while[ i < people]+ h: }- d# ?" d4 `1 k) o+ r
[: d9 b+ @; G/ w9 K
if( length (item i
/ o" m; I6 O" Y1 A* p$ `  `) m( S[trade-record-all] of customer) > 3 )
# Y3 ~& ^' t, c8 _
[2 z1 b7 e, g" k
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
% j5 N  F+ ~4 n: s' T: d]0 ?; v! V- D& F" q) j- x/ Q
]
) D2 J# n# ^, h. t% }8 a" w5 ^( P- Jlet j 0$ E, D" L! O, Z% Z! |; w
let note 0
) g9 D+ M4 p# Ywhile[ j < people]
* D. K* N- B2 Q% E[. G* k8 v( s- b, T1 S4 A
if( length (item i  @; o( b; W7 c* n
[trade-record-all] of customer) > 3 )
& e+ w5 c; A7 c) d+ ^3 l
[1 Z) R' L# x" ?0 Y7 \/ Y
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
; |$ r7 c3 L: [2 H. p& m[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]+ v0 Z+ K+ w3 G( m
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
/ C1 B6 O- t6 Q# E, `' M" `]. U# w3 a9 j% x* ^$ T1 e
]
8 O* O; L  v  r; f' H. S& _9 [set global-proportion note; w$ e/ F! c" H$ I( x
]
- T) f: w% l5 U' D2 T: i- send
% k7 S8 I" o6 D. ]6 N7 Q- {8 ~9 U) N' W0 r
to do-trade
) C$ {+ B, y2 F8 d9 q;;
这个过程实际上是给双方作出评价的过程( [5 ?' c* V6 f0 R
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
8 ]1 V7 F9 Q2 i3 s" V& \$ oset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
2 }) t; r4 K; l+ E& E" J2 hset trade-record-current lput(timer) trade-record-current) |* J5 {) V$ P3 L
;;
评价时间
3 ?/ W2 h& N' ?' M" wask myself [
3 f5 c1 L) E4 k+ ]1 kupdate-local-reputation3 G5 b8 {! d1 w; i, ]  q5 ?
set trade-record-current lput([local-reputation] of myself) trade-record-current6 @7 g. L$ q5 @
]
" I8 r3 z; u8 Z: o5 k0 e4 z) yset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself2 T5 f0 O- ?* h4 m3 M' D- u
;;
将此次交易的记录加入到trade-record-one
. s4 A4 l1 c# V! y1 Rset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)# i4 V3 F# X( }( S6 w( d
let note (item 2 trade-record-current ); C  k* V% R! m6 i, Q% K( T
set trade-record-current- S; A$ C2 @, r( W2 b
(replace-item 2 trade-record-current (item 3 trade-record-current))

. z& f( q4 X1 l3 `: q8 ~# N6 C6 Zset trade-record-current
4 ^6 \1 N2 o5 J2 m/ y(replace-item 3 trade-record-current note)4 s  X7 H( p' c$ Q0 Z
+ z2 M0 F- a( O9 ]1 _9 m
) [& L/ Z7 v; u3 c3 U
ask customer [( m1 u, D) n4 j+ j9 B# L! l2 ^4 t
update-local-reputation
# d. E. Q+ Y3 O0 t( rset trade-record-current+ U* n' ]% f  H3 o
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

0 O8 R" |/ A7 Q) E+ v% ?3 i]- z6 _* g3 {" `4 m( D

/ W& s9 N. d0 D4 Y+ D/ h

$ _- ~2 N2 I7 }+ }7 aset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
! I/ e4 H, I5 N" [
; e6 g/ \6 e+ L+ a) @: B5 q# n
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
6 `5 J3 l2 ~: G2 _! W;;
将此次交易的记录加入到customertrade-record-all- h! ~- ]( z* Z! k& y
end# A1 ]/ |/ ]6 u) a+ U* M

( t/ B0 k; Q' b- z' h% n, _1 oto update-local-reputation
" ]1 D- w4 J$ f4 S8 S6 v0 {set [trade-record-one-len] of myself length [trade-record-one] of myself7 v* i  P- l9 S8 ~" U& r3 v' P
2 J7 m8 u; A( v0 t- ]$ K

7 U4 F6 x' e# h* y;;if [trade-record-one-len] of myself > 3

  M( k/ `5 R) q/ Z3 ?update-neighbor-total
* c/ [. y. r# O! X5 A& m" t;;
更新邻居节点的数目,在此进行
9 n. S/ h$ e/ A- s  e2 glet i 37 e0 n4 `! m( ^2 r: b  n
let sum-time 0
: p5 }9 @! o+ E$ J8 d( wwhile[i < [trade-record-one-len] of myself]
  f7 \1 @  U; ^  R[
; L2 \6 {2 U' S' |7 C  q: q4 y  Wset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )8 t: A6 j0 Z, E3 l0 M/ W
set i
# y0 y6 ~" z+ f9 X, ^( L( i + 1)

' n( F; f) z5 t$ i7 ^( C. O]
9 H  h& e( e6 X  u; s. ~7 \let j 34 P4 Z8 B" x" I3 H$ q
let sum-money 0
% |, ]. e  I8 E/ n8 `! L6 m: bwhile[j < [trade-record-one-len] of myself]1 y" ]5 h' q2 y5 J$ _; A' N
[
2 l# U7 K! Q& A* V; C0 r+ Xset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)7 R5 ?* o$ ~# D+ e" `, `
set j
! i7 u& E7 e7 \* u0 w" M! W  W2 v1 ~0 V( j + 1)
3 i! U. C0 Q& a* A5 J
]  [3 S' N0 R( _) R+ y( F
let k 3- w  A% h3 q* Y4 V" z+ b  D
let power 0
4 g0 g9 o. g! {$ Y7 i0 s/ x9 B( Hlet local 0! h3 d, b3 q: T! d
while [k <[trade-record-one-len] of myself]& \( u  C, s+ U; u7 O( g3 ?
[" q0 w& J) n) h6 s- P9 g
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 s+ a# {9 u5 q& a
set k (k + 1)
8 D) S& a, \1 H2 e! A& ^/ t; _]+ s( X& ^1 P$ @2 Y' E
set [local-reputation] of myself (local)
0 g% m" B' p) l; |! f, ^9 K* e6 iend) t0 `( t: E6 r, l  L! H
0 h) L  |) a; m9 `! K3 t  ~3 o
to update-neighbor-total. K" c( g5 @: L6 r

2 z6 h  f, h# N2 ~8 C+ Wif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
* U- P  N# {$ M, F1 c, O* g  u4 A- }
7 n; B; |7 ]' U0 K- l1 u/ _
end$ v. V' b2 g, ~' e2 ?% g! b5 n

+ j( A/ ~, G! l% D: nto update-credibility-ijl # n2 Y0 K+ [* C% }/ Z* p
4 @0 F$ E0 W& T
;;
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。/ r2 t2 N9 W7 F* a6 ?
let l 0
; E: V, |; ]' x2 g. C6 {1 W7 R: Bwhile[ l < people ]
  H1 g% q7 A$ |7 w, F" s7 t- I;;
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 N; }3 Q( r1 l' W- H[3 {, g/ ~6 [$ D! O
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)6 f7 {& ^8 g/ ~2 o) e+ ^
if (trade-record-one-j-l-len > 3)
& D, q2 x4 E& C3 D# R! j3 K[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& t9 R+ F8 k+ k9 c; |
let i 3
2 t1 r1 ?6 F% w8 nlet sum-time 0
) l9 ?8 R  W3 |% f; {; qwhile[i < trade-record-one-len]
0 N# [5 L- K+ B. U5 k9 ][* y& }# m5 Z4 q9 f  D( A: w
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
% l" q9 V% P9 J3 R0 {set i
1 y" F6 e5 W! z( _3 Q7 }( i + 1)

/ ~, f+ w- d5 O: t! }5 K]0 j7 l' H3 |' ]9 ]
let credibility-i-j-l 0  s1 D$ k4 \. f6 I" j! U+ _
;;i
评价(jjl的评价)
" b% X8 i) P  a( slet j 3
% D. `8 i, E2 n# Dlet k 4- v, X$ u- v- E6 M9 D
while[j < trade-record-one-len]
& Z' C5 D& Q  n% J9 H2 _[5 Q; @/ _/ K5 G( U. f, [& ?
while [((item 4(item j [trade-record-one] of myself)) - item 4(item k trade-record-one-j-l)) > 0][set k (k + 1)];;首先要寻找在ik次给l评价的这一时刻,l相对于j的局部声誉& y: c) A+ z; t% S
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). X8 I) E9 x) w# s
set j) l0 A! r  Q- z
( j + 1)

# o! U2 ~& j" V) ?: s& X]+ W6 I2 u/ c+ v4 [- [# h
set [credibility-all] of turtle l (replace-item ([who] of myself - 1)([credibility-all] of turtle l)(replace-item ([who] of customer - 1) (item ([who] of myself - 1) [credibility-all] of turtle l) credibility-i-j-l ))( U1 W$ S% _% v9 V" Q4 i. \6 W

9 n; R' `* I% j6 v. _" Z

& q9 U0 d% u6 S+ z4 m' hlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
% c1 P% y+ N) D;;
及时更新il的评价质量的评价
& Q" b! E# q# f" `" t/ u% Lset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]) }/ U! q- p1 s
set l (l + 1)) C7 C  f! U" ~# I4 k- ?
]
8 K9 }+ W' T$ O) O: [) P" d5 qend
0 `7 ?* t2 ]4 m8 v/ M, p( O& U9 x1 M3 y/ m' c1 u% z
to update-credibility-list
3 T7 ]. f8 \( Q* ylet i 0
. F* {7 z& H& {0 m0 Qwhile[i < people]; F% \+ X0 U- g. T& S7 t
[
( k( W, @0 \0 Y- d! V$ e6 {let j 0# }, R( S. [. G6 {# U6 A' `6 d& A' ?
let note 0
- ~  `3 v2 n+ Wlet k 03 l0 _( ]4 ?, ~
;;
计作出过评价的邻居节点的数目
! U. |: W4 u; N. Hwhile[j < people]' L( M8 @* j2 m  R7 T# _( A5 b
[5 q8 W! O3 U4 z7 w7 O
if (item j( [credibility] of turtle (i + 1)) != -1)
! I% o# t+ z& A7 R/ x* b% p* A;;
判断是否给本turtle的评价质量做出过评价的节点
, V+ H; N6 m, V3 l7 \- G& ][set note (note + item j ([credibility]of turtle (i + 1)))) P* ~* j6 R7 R2 K4 t) X' C3 J
;;*(exp (-(people - 2)))/(people - 2))]

# h/ M1 [: r* ?3 }' zset k (k + 1)# M4 i7 V0 n% v+ P1 B4 ?; H
]6 o. M, g% v6 r5 a# D) E
set j (j + 1)
, c0 T' M4 S5 k* p]; k2 d( m+ r# ?7 s. T7 `# P) `
set note (note *(exp (- (1 / k)))/ k)
! f' G  }) {1 u  g2 B& bset credibility-list (replace-item i credibility-list note)
: Z. @% T  ?9 }/ ]. `( T6 |8 q# ~8 qset i (i + 1)
8 S) [1 M- E0 d5 Y4 o* R]
( x; |4 c3 M" `6 {" xend; [  ~, v. V# I

& m( }- ^( _; ^1 `7 n4 yto update-global-reputation-list
- `" Y$ B/ b2 k* Q) d$ [8 dlet j 0/ `* ?! F1 R# u6 R
while[j < people]
% F* c- Q  v( \  {; r[
: J- I9 p# ~1 dlet new 0- k; o. I9 k9 p6 T0 C8 |/ q
;;
暂存新的一个全局声誉# ^7 O0 d% }7 E* z* K
let i 0
3 V$ \2 E( x6 D& ^let sum-money 0" j. o0 P' `1 }0 C. I" F9 O, q
let credibility-money 0% h' V0 ]8 e5 W! F0 w4 q0 X
while [i < people]
7 r1 c* J0 v% D6 g, M[
% W+ ]' Y9 p  t  P/ O+ Cset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))( Y6 o2 r- O" J3 c( _9 X
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
! y) J: F* f; u  W3 W7 T, @" B2 Rset i (i + 1)7 K9 e$ T8 ]7 O" E4 T2 R3 L& z
]! x7 B+ Z# X0 L
let k 0
( L: b: ]% Q6 h" T  Mlet new1 0
1 M, Y8 {6 }7 _3 c2 s  P5 ]8 iwhile [k < people]4 `7 M1 c6 ]9 _0 M+ i3 Y
[: L+ G7 P$ F4 v8 Q- G0 j1 I! B+ U
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)( I, O( C8 H" {8 H8 e
set k (k + 1)
+ [$ R" [4 Q# {* \1 J+ J$ R]0 B0 M/ R7 {* L; |. T- y0 S
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 1 o; R4 ~' O0 n  E2 Y$ {. w0 _" l
set global-reputation-list (replace-item j global-reputation-list new)9 T' H8 C6 W0 P3 }! v
set j (j + 1)6 P2 a' _9 t( V* U
]* ?% H' t8 i5 o6 E- f5 [  m
end
+ D9 T* X, L: p$ d
" T0 y0 P- z# ~  H- \9 t7 k; e& x
* \1 n# n" f; Y/ \$ d
  S8 x, P: l6 n6 }# m5 }' {% I; R  xto get-color
8 E% K( E! s; p9 L9 y# e/ k/ G0 f% C% ?6 M3 }2 O; X( W4 B
set color blue
% d! |+ w/ W6 |4 V- D
end
1 Q( i- a5 o+ b" L* z. m9 F2 N6 O$ v' l. |& d
to poll-class, l) g+ u6 G0 s+ l8 V
end
9 `2 S& c# q0 `* |. g! x
3 i) e+ Y9 @+ e8 J, c8 P( uto setup-plot18 R1 l  P8 a4 F4 ]) l* Q9 S
0 h: E) F4 E2 t8 |
set-current-plot "Trends-of-Local-reputation"
' u3 `. G) d! V. d7 e
. R! D- M4 R" _* b, G, y0 h# i
set-plot-x-range 0 xmax

; ~# z4 X, b) a" X1 H# _( U% d$ g3 ?$ |. A. P6 @4 z! W1 V
set-plot-y-range 0.0 ymax
+ ^( V! {  @! ~: {0 c$ M
end
% }* r) |. I! {9 s1 e
' o6 m% l  I8 \1 _0 \to setup-plot27 _7 G7 X% D4 d8 x- o4 V, r( S6 h9 K
/ d- y$ r' Y: f7 q, X! o* L8 ~4 k
set-current-plot "Trends-of-global-reputation"
. j/ j6 f6 O) g  m4 q% p" X

% y& I' b- J" C( h( uset-plot-x-range 0 xmax
$ G. P) D2 V- `" {7 J$ F+ x
- c( R# q4 E) G0 x1 V7 }% J
set-plot-y-range 0.0 ymax
8 T3 H* o$ G3 ~+ X( _8 a5 O
end
  }, G9 \9 [. \: L$ |; c+ g2 U6 t1 ?
to setup-plot3) {$ }/ b- J3 Z; f
6 y6 R& g# L6 q0 W
set-current-plot "Trends-of-credibility"
5 \; {: t7 G0 r
: h% j# s9 a3 b8 V2 `; k8 \* |. U
set-plot-x-range 0 xmax

& F3 `2 v4 K" X: ~' Q( C# ]" N' U0 ^
set-plot-y-range 0.0 ymax
" L9 ^5 r, m8 F4 S& v  H
end
3 ]) {0 i9 k7 I' u
4 w, m; Z% ?9 X: Kto do-plots
0 m$ f! K4 x8 \8 a& J8 M& @set-current-plot "Trends-of-Local-reputation"1 c  b  L" {) E, }4 q
set-current-plot-pen "Honest service"
% ~4 x! p7 |) g" qend
9 `9 F) k. W0 f' {! w& y5 C! s( p7 V8 q$ Z8 \  N
[ 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." f5 t5 r4 z% \% l, q) ~( [- s+ s
9 g. D# {! d) j" X0 B, D
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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