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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:
5 R6 `& C: I6 p& K9 lto do-business
/ ~3 D; \( y9 \2 p rt random 360
0 @% l' O7 {" s, I9 l fd 15 B. h9 m- }) p0 I5 O
ifelse(other turtles-here != nobody)[% F# V( J1 ~; A! t: W# Q
   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.
% w9 ?# H: ?5 P# x3 H   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
0 p1 j; V5 Z3 l3 T+ N   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer" O/ @; d4 ^5 o* p5 ?. @( Y
   set [trade-record-one-len] of self length [trade-record-one] of self
7 I+ y, [7 H' d6 J" A   set trade-record-current( list (timer) (random money-upper-limit))" e+ Y; ^6 {. g: @  I4 }3 ~
9 D' e( o# a# p( [! P
问题的提示如下:
' ]( S1 t. c+ m. \' o  X' G% d" C- B0 D- C- R/ q! O- k
error while turtle 50 running OF in procedure DO-BUSINESS
4 X0 c* `( d- m" l; ~. r  called by procedure GO# l: `& M) u" [( S: L! O
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
2 d; h& [! r5 U9 f$ Y7 i  N
(halted running of go)
, J' J- d1 H) R7 n
5 @# T1 n" J) s+ [: I9 B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~~
" |$ c6 h# z6 a9 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
7 k$ M& [1 Z: V1 s; c6 |globals[$ o% \  h9 ]6 K0 a
xmax
) l4 Q0 j/ v9 x+ [; A' iymax
) O# l; ?. c& ]4 Nglobal-reputation-list! T1 b( w( g) d% {4 }9 j( g, Z
$ T, J& J1 @2 o9 }
;;
每一个turtle的全局声誉都存在此LIST9 }6 t7 j+ `' n$ W) B
credibility-list$ h2 }. _4 t4 ^2 i
;;
每一个turtle的评价可信度
/ }+ T9 ^+ _; R0 m8 T4 Shonest-service7 A; w7 G/ Q' A
unhonest-service
3 Z( N" H9 D$ Z4 I$ e6 foscillation: y* ^1 @% k+ R' t; Q+ }& g0 X
rand-dynamic
  Q. f& x9 g8 r0 f; d- Q/ ?]
; X/ e* \( g; F% v
  D* D5 K0 L0 w- r8 C7 h4 P4 _turtles-own[  A; R7 c' B2 [8 b, C* Q
trade-record-all
+ b0 _1 [+ s; k/ v; ~;;a list of lists,
trade-record-one组成5 _$ Q3 ?' s; K3 k
trade-record-one
5 ^2 v/ z/ L! b6 r, `; J5 @;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录5 b1 T/ \( Z7 I' M

0 d( K' F2 X$ s;;[
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]]% Q7 L1 A5 P" U8 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]
$ P+ x$ O- H. G7 F  ^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list6 K9 U! b8 y3 f1 F! u
neighbor-total
9 K1 _7 y( d0 M& I8 e+ O& y8 V;;
记录该turtle的邻居节点的数目
- L* f4 ~9 k8 D' Xtrade-time
. E4 C: X$ }- v+ A7 Q0 h;;
当前发生交易的turtle的交易时间
! x# O8 l! v4 w* Yappraise-give& X! c) w' V2 |: v4 v+ M
;;
当前发生交易时给出的评价
9 \" Z5 K$ D# Wappraise-receive
& V+ x& H1 l1 N/ v8 c8 ~. m2 M. c% r+ I;;
当前发生交易时收到的评价" W. T9 T- O) e; q( C) L1 O
appraise-time5 P' W' U1 c4 j/ A. Z# M
;;
当前发生交易时的评价时间/ O5 P. O! K3 i/ v0 D
local-reputation-now;;此次交易后相对于对方turtle的局部声誉2 Q( P5 U) Z) E& c
trade-times-total
% G# S' L' A0 v% s# p;;
与当前turtle的交易总次数* A- {7 _) @4 h, ]6 S
trade-money-total
/ n$ i0 z/ S9 R, |5 |' k+ K;;
与当前turtle的交易总金额, {! b2 m' M: D( {
local-reputation& D0 x3 B' y! W7 L" K
global-reputation
9 x$ ^3 v( u" n7 @; G% Gcredibility
  b5 m3 R& O# Q" ]: E3 Y. r;;
评价可信度,每次交易后都需要更新
- x  }2 b" V4 t5 j; Rcredibility-all
( n2 f2 `& N, b: h) k;;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
2 P  m0 \" h6 a4 e' }; e. E3 ~; x9 B' d# B* J5 X
;;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* I7 I/ R, z0 _3 M8 M7 c2 }* R' o9 z
credibility-one! i( ^, L0 J2 ]
;;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' t6 n/ B# I/ V. P; ~
global-proportion$ J4 `- h: y) d6 Y" G7 f
customer$ X4 F( I) t# O
customer-no
6 e& Z; Q! g7 k" K, E' \# K- c$ Xtrust-ok8 h) `* `; q# v( _
trade-record-one-len;;trade-record-one的长度
/ p. }0 t( j2 V/ n. v]
8 ^' H! Y) n' r/ \$ t9 @! d) m' a( J) l1 O% g
;;setup procedure
5 v; C1 f2 H7 @/ S- g9 L
+ ?3 Q4 w& C' d, `to setup6 x. R8 t, l' K7 C% f
* {5 ^- H0 `' e5 ?0 t+ M' Y
ca
% Z! K4 B! l( o- g; ?  w

6 v! u2 [) d  e. y9 c# D* k9 sinitialize-settings

# Q9 E" e8 G$ C  ~% o* I# |. c3 c( k# [$ G+ r3 Y; T' D
crt people [setup-turtles]
. D# G3 Y8 K, d7 W3 d

7 R6 s, ?% K: L, F7 |+ X; kreset-timer

0 p* p. U( q/ p+ t  [% [  F
2 k' R2 a; q3 zpoll-class

! O, M6 N( ]! P+ D
8 y! u' z% }6 m* b* Usetup-plots
2 T6 Y" R% T: y; g$ R3 ^

0 g/ ^! X! d# t* L9 t( Ldo-plots
/ h/ Q$ j/ X; q2 B# o& A
end" m+ ^0 S' F$ f) ?" U2 ?( {

& n5 W7 U" g1 F( @to initialize-settings
/ n5 M1 v1 G3 o  _7 \  I
0 I7 J6 a! d2 k9 kset global-reputation-list []
5 ]: f" T' x* S, x
& F. N4 S" J. r* J! q
set credibility-list n-values people [0.5]
. I* _8 H8 r: L* A% G& p8 d6 W) ]

7 ^/ h  ?. |, _set honest-service 0
) \5 G6 z% \% B) J% ~3 w  m$ T) a. c

! u' p6 g4 T% i/ j& h: tset unhonest-service 0
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( d9 B8 a2 _# \* x5 q- @# h
set oscillation 0
: `8 k# q' J0 V: P

4 _& H( |  m1 nset rand-dynamic 0

- P8 [; u& c  e3 Y0 d1 Jend* O& r* L% p3 V0 Q& R( _/ n
& C+ E+ ?. p% _& @$ V. C
to setup-turtles
: ?' t% Y# |2 R) gset shape "person"5 E% m! y6 p, Y% H# t' P
setxy random-xcor random-ycor1 e" ~8 t/ `3 W1 {: K2 q
set trade-record-one []% I4 U  W' \0 ]* R3 y# {

0 ^; g# _; ~" z( P8 b6 j' cset trade-record-all n-values people [(list (? + 1) 0 0)]
* u1 t3 n( ?$ C; [

6 K! p. c% ?. t: y% sset trade-record-current []
% g: z4 v* f  f% ^2 t' C% i6 pset credibility-receive []
0 \, R1 u7 l% A0 P4 v& V% zset local-reputation 0.5
" _$ f( {: J4 E, K% V( x9 P! y6 o; Vset neighbor-total 0
& R4 x9 B$ C* }6 e9 ?  x( R9 nset trade-times-total 0; w. o9 `& C; ?& n" C2 M
set trade-money-total 00 _) u$ t3 z" F$ {- i
set customer nobody9 H5 l1 u$ ?7 u! @
set credibility-all n-values people [creat-credibility]9 s! }# J1 t& n: D: p
set credibility n-values people [-1]
7 B' U/ X; v' n$ aget-color
9 D. p; p) h6 |1 [2 v. o3 m- t

  W2 V/ j* ]/ _; z, Q; Hend3 U9 {3 x- D2 L" M9 U, _9 h
( F1 k" K& |9 P/ I8 D( c
to-report creat-credibility
& {% x: H4 a; Treport n-values people [0.5]6 I: ^) S! _0 l) z+ b% i5 Y1 o
end
! X; [6 ^4 J$ \: Y" y4 B. B1 h9 c2 B6 u! P( [$ e* b4 E
to setup-plots
$ i  Y% h: \5 C- n' n9 |$ J4 v2 R* E/ y0 n# }1 ]. @
set xmax 30

# L' L4 k( h9 l7 z7 l- u) J) z# B; Q, M$ S& r0 d9 o
set ymax 1.0

# n7 G+ _" P) Z# W0 n! W; {: \' }* S& @$ u3 j+ v
clear-all-plots
4 E/ M* [4 D! T* h  @: b4 D4 C
1 A( J0 T$ \  M0 P' N
setup-plot1
/ X* W. n4 N; l! S
! A; f$ s1 c$ m! b
setup-plot2

6 p5 r' R9 I" a# i: Y
7 i+ N8 }7 @3 Fsetup-plot3

# t* z3 A/ p: x$ ?& a& u, V5 _end- F6 W: G0 E. i( t/ ^

8 ], ?! j( a+ v# M/ R) ?;;run time procedures
* k  V4 ~, Y! a
6 J. G8 C: j' J6 [% Y5 S9 B2 n- dto go
5 D( L! v2 [, L; T
/ ]# m' ~, ^' p( e; ^9 q# A4 _8 ?ask turtles [do-business]
% s0 U# S1 e5 ~' f) r5 s4 Z0 h/ F
end& _! d+ {; `' Z1 _& V' b! w2 j

( k0 U. b0 M; M" C9 pto do-business 4 C6 l3 B/ P  z2 ~
) J& Q7 X9 F1 j7 V& H
' P/ R' [: C5 l6 M0 Z5 M  z' Q) Z
rt random 360

$ X* r$ b7 e% ~. `1 M& f' s+ C' d' N6 V; V( f  ?
fd 1
3 l1 x. {" B9 h5 B- E% G

$ F8 R: g1 ?$ G- F/ nifelse(other turtles-here != nobody)[

* R$ ]4 c7 G6 h$ a  N% @( c. \* y5 N+ Q; g8 |2 `. N
set customer one-of other turtles-here

4 }7 s6 K# a: r& y  B8 Q+ @8 f2 A9 A* _" a/ F: {: c4 B
;; set [customer] of customer myself

% |/ D$ U( U; L
7 s) V7 f( g6 x5 ~set [trade-record-one] of self item (([who] of customer) - 1)
5 i' O6 j. k+ f) D# E; M% t4 |[trade-record-all]of self8 R+ W. F# @, Z0 d# y1 ~9 L0 o! e
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
9 B! s9 ]& c) f0 x0 D: ?
" f0 j% v5 B$ U! }% N
set [trade-record-one] of customer item (([who] of self) - 1)
. q2 x& u% [6 S# a/ @/ }2 T" d. D[trade-record-all]of customer
' v  N. [; \, c" p
, d; v3 |  L9 Q" a- d
set [trade-record-one-len] of self length [trade-record-one] of self

% Q: o1 a( K- x( W7 U/ {/ z5 D' w" N' A. {4 V% [: c% Q& ~
set trade-record-current( list (timer) (random money-upper-limit))

$ Z; E4 U0 P& O0 Z
7 c) G/ X; U, e  t. S+ R8 W( ]9 Mask self [do-trust]
7 M) q  M) z' V9 {$ E7 K;;
先求ij的信任度0 w/ @2 z/ o; G% S  H9 P4 a7 O, v

- @1 C9 M8 o. n" S5 f2 nif ([trust-ok] of self)
. ]: S4 W% T) W8 t8 E3 E;;
根据ij的信任度来决定是否与j进行交易[7 H! D% C1 f& ?; A& Z# Y
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself# m  a' V  T1 S  T
: |% ?5 Z6 _- e3 ]
[
; J& ~/ S7 Z, {, j/ M4 t3 `* m
, \/ `- L2 T) [- t& j* }
do-trade

* `8 I! L4 d% w$ z5 B
" Q  U1 N8 W" a; [update-credibility-ijl
) c0 v, R! B0 V. b8 f7 u/ q
* q$ U' n0 D9 l/ G2 h/ ]$ u
update-credibility-list
" _. E: D4 l2 w8 d; e; \  u

$ s7 P& A+ e# j9 M6 t3 j! s  e
. ~; S1 ~% W9 |/ Q3 P* uupdate-global-reputation-list
" r! _$ P% G% b8 a0 Z# a
2 U; b( a; L* N2 {6 I
poll-class
4 v7 P; J# N& T* m$ J( A
- d# ?' I. K" t9 Q1 B3 ?4 x) G
get-color
* H6 Q/ ?( S: z, [
0 O' R% i& d/ t+ c% V% o
]]
% o; m+ z) r3 n/ {0 c3 O9 w% w1 M. G
4 c" j' [7 V, A;;
如果所得的信任度满足条件,则进行交易
+ n: K5 T: E$ G4 M7 p
5 x0 l9 X/ A- H/ E) E3 a[

! r8 f+ S5 v8 o. Z' v0 W  b+ e2 r. |6 B5 M' @
rt random 360
" V4 O- k0 S+ T( s
$ k0 s: A  o1 U/ D) Y7 K) E
fd 1
  c9 z7 H3 ~4 L. e) ^/ t) r" c

( d* ]" S) [! q]
# p6 W$ Q: Q( w" v8 M! a

: r8 w4 R$ ~2 ]0 Xend

& N* m) U2 V- Q
; a1 V5 w, `) n1 ?8 Q* q0 oto do-trust " T9 x6 i' k4 w7 T! A' {; ^$ D. ~
set trust-ok False
& X' g! h: V1 Y4 R
4 Q7 L2 O  \* Z" t* D5 G' e1 w7 j) M
+ K( U  m) q$ H. ]" z9 h8 _
let max-trade-times 0+ q$ I  ]0 ]) t1 K4 m
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]# P0 h6 S, S3 V* j- T' Z
let max-trade-money 0
/ {9 m  x2 C% y* D; W/ wforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
" ^' R% V" l1 [! `: m4 Olet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))" O" F5 O6 {9 x. Y( h# B9 c# o2 _
$ @6 c' E$ {& v9 }5 J

2 b( \( S3 i5 f- S% Fget-global-proportion% G- I+ D! M1 ]. r7 p
let trust-value0 Q2 z7 a3 [' j% V5 a* Z# t* g+ t, t( W
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)
# p2 i1 ?' j1 |# B4 M: `
if(trust-value > trade-trust-value): t/ d4 o1 x" s! }5 O" ^# z6 S1 v$ \
[set trust-ok true]
, n7 O2 N9 \8 c- C+ S  Wend, p. X1 H4 z8 s; u* @# y

5 R9 Y  B) y. w& N/ lto get-global-proportion* X3 F' @! @! q9 v* N
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)) o* U) \9 X3 g
[set global-proportion 0]
# j( R5 s  k/ W9 t* V9 P) ^, Y[let i 0% n& e$ M/ L2 E7 f* H' v! U1 p# T
let sum-money 0) j) Q. E$ q' A9 t7 Q
while[ i < people], X3 w$ I1 [- b
[
6 r' P! i0 P* W  f1 u2 {if( length (item i
8 m7 }1 J; t1 H0 T[trade-record-all] of customer) > 3 )
* e0 j) H* l/ Z! o
[; K! v8 i- P! V- W- q
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
' e$ m- h: ~. V: H  T5 `]
; c6 Z6 x. n1 f]' g8 m+ M5 a) h  m4 f$ |; X! k
let j 08 r, }' f; }1 I5 l8 e2 M
let note 0
3 m0 G  A& p# c, Awhile[ j < people]
2 i8 x) t$ C$ R) ?1 J& L: @[
$ [8 D+ P; x7 N# b' eif( length (item i
/ p+ g6 R/ f0 o[trade-record-all] of customer) > 3 )
  q$ |* u( l) K3 \; H
[
9 i; ^: [3 Z* c6 Iifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
& g. E0 e5 q( Q1 b# f" A[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
6 b. _$ A9 W2 ^5 D, f' @* d[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]0 t6 K: ~3 S# b( }! ?# X7 ~
]6 M2 p( c0 t( A$ P: O. Z4 ^
]
# C3 J* H: V, ^5 Fset global-proportion note- V1 `- B5 ]; V
]+ I: q7 }; F( \9 E. t! \
end& J$ {9 v/ d- q1 g4 j( I- G

6 C2 y& W) o* H; x; N- \! J: j! K$ f% Eto do-trade
* z0 Q, U- @) F, _;;
这个过程实际上是给双方作出评价的过程
6 Z9 R7 T/ `8 }5 Uset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价" r0 @- k: z; q( S
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
- Q, k4 X" ~0 Z0 n+ m( u- wset trade-record-current lput(timer) trade-record-current
) @. k5 i- u7 A;;
评价时间
1 X/ ~  O. t# w! Lask myself [
& T, a0 h+ L5 I7 w& ]update-local-reputation9 L5 H" n* ~# h3 ?. g) |* N& @7 \9 ~
set trade-record-current lput([local-reputation] of myself) trade-record-current
5 m3 m1 |: c" z]4 O5 Z; u6 j; e% g, E; j8 G
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
/ S. `, R' G0 E! w+ c6 E;;
将此次交易的记录加入到trade-record-one
! F! h1 I& {/ w+ S1 uset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)( }( g1 @; @; {* `3 ~0 j
let note (item 2 trade-record-current )$ K, g8 K8 e, R8 ^! J8 h' B
set trade-record-current: a% V6 K+ q# v, W/ `6 f
(replace-item 2 trade-record-current (item 3 trade-record-current))

( V5 Z( t; J$ _set trade-record-current4 C  p. J, J5 _- S6 d* u, f  s
(replace-item 3 trade-record-current note)
! G+ v9 r. _# Y  t2 @0 Y' c* v: c  n, m, j% F8 n" n8 O' l+ h$ w

8 y& k. S+ U+ ^- _# `7 |6 Lask customer [0 y+ p7 m0 h  g+ \
update-local-reputation1 j5 l2 X* k$ C- ?& `: s2 t
set trade-record-current
0 `% l# }( R4 K5 }0 d6 v(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
* |4 b3 d$ X1 r% q2 q
]
4 J& ~, Z" T1 }" v) {; |% V9 ]
# D, ~. v  K# ?6 l
2 Q3 @& Q' @  v2 W
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
+ i: q0 m' I8 c
" U% w$ \7 j/ \' }. y$ ^. q+ T1 }5 M- c
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
, d# {& |, Q3 F4 S% E# c1 y+ H;;
将此次交易的记录加入到customertrade-record-all
. \) X' g) H% B) k0 Kend! q; J0 _. m+ k& s; ]  u

8 Q- F  P* I) z0 L7 j) Sto update-local-reputation
; ]2 \* ?" j# t) p" Xset [trade-record-one-len] of myself length [trade-record-one] of myself; z7 [3 j0 A) {# }" h

2 `: B0 K( i1 W- {( q
+ Z% c. A) d: ~( \;;if [trade-record-one-len] of myself > 3
3 [1 {  R" {$ g& O
update-neighbor-total3 h2 t8 S+ o, M3 H/ a; o/ n
;;
更新邻居节点的数目,在此进行
$ ~$ E9 F5 q$ C. l, c6 j, n+ J! A/ X: b7 Hlet i 3. v; m3 s9 Y& d3 l7 ~
let sum-time 05 ?% U) L9 Q) j' A8 F; E
while[i < [trade-record-one-len] of myself]
* A" s8 Y* T' \6 o1 O/ w3 N+ f9 h: v[' |# ^/ [9 n. `0 a, G& l
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
5 D: x) p0 w! a+ U& w0 aset i( |' K" @2 X' G# ?  u
( i + 1)
: C7 {' z3 k9 p/ r. k" S
]7 h5 D4 M$ x+ \
let j 3
0 v. m2 H  Z: Q5 q4 k( Mlet sum-money 0' g5 {( V' V+ c$ s- @5 i3 {4 K
while[j < [trade-record-one-len] of myself]
& b- j% V# ]5 e9 @& o% v: e[% l" ]3 g/ ^7 F; b
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)
) p  T0 s, B/ D5 V4 Cset j
- t. Y% k  G9 d2 }) ]" X: D1 w( j + 1)

; ^. a6 M3 ^- a: S0 @# `8 A6 I+ v]9 ?5 u5 z* _+ H
let k 3
! S8 n( X  n0 @& c3 }let power 0
) B+ d" ~- `* w6 mlet local 0
: w" Z, ~3 G: t+ L% X; hwhile [k <[trade-record-one-len] of myself]- ~4 t1 W( H  F  W8 I4 W$ ?* e
[0 [2 j% D* b0 d% P+ P) Z! ^9 b" Z
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) 6 K! q* L+ l; ?8 H
set k (k + 1): R( P1 m# ^0 i+ @( n/ e" H: x
]& E8 H4 E* z2 o7 T
set [local-reputation] of myself (local)
  A6 H5 Q% t% fend3 @6 J4 I6 |' I) S- v- B2 [: d1 K7 q

3 O/ i+ Q3 S5 _- Sto update-neighbor-total
) u" q% J, F$ c) l
* J) s( T  ?' m% x5 N4 S1 fif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]0 ~' _1 \2 |' z1 t

) B2 |- |  ^8 k* R
' N6 \/ c$ r; ^/ M  v8 T
end- C+ C" S/ L/ X3 p( e& G" J( ^

6 r$ ~, f/ K1 Zto update-credibility-ijl
" J  y" C; A# h8 @
0 e! o$ \# e7 L1 Q;;
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。9 E3 W" [1 z, t4 w1 ~
let l 0
" j# n1 O2 ^) n/ A8 |/ T; ewhile[ l < people ]9 D6 J1 ^/ m3 j; q) U
;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价4 {) C" u* Z% k  s  \/ \( B7 m+ f
[0 z. m) I( v- X) Z
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)8 U+ Z# I. P$ x
if (trade-record-one-j-l-len > 3): O7 V; p$ ^- L' j  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* c( F. I8 Y# a0 i! ]
let i 3  v; V3 [+ \- w9 B; |8 i' M2 a
let sum-time 0, f4 H& V# l0 H7 C8 [# ]
while[i < trade-record-one-len]' p# H. L( r3 M. v& X
[
% c1 J! ^$ A  g& c4 dset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )4 n' j0 H; K9 n, h
set i8 w9 B0 i. r8 c; ^; _
( i + 1)

, ^% o; k/ t0 E) }# I) G]: o+ m2 ]& ]* N+ a' H# S
let credibility-i-j-l 02 {) U2 U, o7 a0 b6 n7 Y; S
;;i
评价(jjl的评价)4 g! i9 _" D2 Z& o4 b
let j 3. F. C* n2 g) f8 a
let k 4: C, A* p$ Y1 _+ g1 v2 g
while[j < trade-record-one-len]
4 v$ Y- J1 j0 b[% k  V( {9 ~2 i2 g- r+ [) j. h
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
0 s* w6 u' _' N  K" d! T' i. p3 Nset 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)4 s* {6 e+ `  J7 i, F- U% Z
set j
6 y: W8 H, n7 l/ a& U8 x  |5 u  W- g( j + 1)

- Q' x% F0 ^0 W]2 ~* r% b2 {2 v, U. Q2 d
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 ))
2 E  V% q& f1 I# O6 a
  r- j1 j" T% N# @/ z

* t& ?: y5 f! ~( G: t: j. z  Nlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
* R# T% W5 j& w2 \, U0 E$ P;;
及时更新il的评价质量的评价2 R$ S' T( `! Y- r$ a; K
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
7 S# ]# h6 ^, q$ f1 wset l (l + 1)
6 B1 o  g* ~8 Q( H( n]
+ I; I' T$ |8 X" ?1 w$ d& wend
) @8 O# E7 }: l
$ q( U4 X; N' c9 A. Gto update-credibility-list; }+ h. K1 F! g  i
let i 0
% ~  L6 K0 t6 X3 Z# M* nwhile[i < people]
+ ?8 k1 F% k2 U7 [[
, ]+ q+ U$ x) v3 ?7 T7 Nlet j 0. s. }! m9 ^0 P2 H2 W5 P5 ^) [
let note 0
1 P" R- E. u5 T+ y/ I$ Ylet k 0
# [. ]: M7 p; `. R;;
计作出过评价的邻居节点的数目
. Z+ q+ y5 Z0 O& p7 O3 @7 iwhile[j < people]
# ~, b1 T, P8 w& c7 f[
0 I* ?; ]) S0 M) {- Jif (item j( [credibility] of turtle (i + 1)) != -1)% ]$ R  o  a2 e3 M% _! S& E
;;
判断是否给本turtle的评价质量做出过评价的节点
( }; ^% q; b9 G! M( @( }, t[set note (note + item j ([credibility]of turtle (i + 1)))
- M- A* q" P' E9 I, \;;*(exp (-(people - 2)))/(people - 2))]
% W" f$ e/ r! C: d6 F" M9 o
set k (k + 1)
7 v1 y; H+ y: j! h3 `4 @]
& Z- J* H* ]0 ?8 C3 ^5 b3 ^4 T4 oset j (j + 1)6 e  l* c. d  Y/ D4 ^
]) @3 H  `' u) Z1 y8 \
set note (note *(exp (- (1 / k)))/ k)9 H8 Q# Q' {* t1 _
set credibility-list (replace-item i credibility-list note)
$ x- g9 N( B# y6 V; Q# F  w5 oset i (i + 1)
: [1 o2 m( o0 k) E/ O; ~]  K# d5 m3 G- F3 O: D8 w: \
end
6 A6 g. ^: W& h! ]9 y( R" i, t2 ]1 S/ w4 h+ y
to update-global-reputation-list
2 V2 J* q1 B9 c5 S# N1 j& \3 N) ?let j 0* V" `5 ]& ?; u2 m. V
while[j < people]
5 m9 N+ \. x1 j. b' E[/ O5 w# j* x8 m3 f3 l
let new 0" K* s8 o: O* A- U
;;
暂存新的一个全局声誉
4 [  g8 P" Z( k' B9 z' u, Glet i 0
- s+ B$ l# r1 I- _1 R/ E0 E* Z7 Olet sum-money 0
# Y/ v! `: n( R+ G$ Glet credibility-money 0) q9 Q9 r, J$ ~* V% F' q
while [i < people]
) h; `1 K* `. `6 n: L[
6 R: |% E% j1 V4 C: S* v1 a* Zset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
8 C$ H( c9 U, x! [7 hset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
3 ]$ {3 I8 j1 \& B' c( n$ s0 m9 `set i (i + 1)( e6 K$ M+ z1 t" b# [: Y( @
]8 ^" O; l/ e  ~: R/ R0 Y* {
let k 0
5 }+ p( v! t! t' Ylet new1 0
* H5 K9 P+ i' Uwhile [k < people]' @  f( ~/ x5 g7 C! {& T
[
' [2 p* x: T( C$ O1 j) N: pset 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)2 i! i7 M- m+ F) G
set k (k + 1); a4 o) e/ k  d+ b) c  d0 I0 `
]
4 y$ L# Y$ i' J% u! u6 ]6 o5 a" mset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) & I: P7 }+ @8 R" R
set global-reputation-list (replace-item j global-reputation-list new)
' L0 A' g" ^' I1 v) B% O7 {set j (j + 1)0 S' s9 V0 {% v3 z3 I# Q" ^
]
$ I  i  u1 a; v+ W5 \0 e. Z7 O2 h: w" jend
* [3 |4 _. u- `# u4 A$ V
' s3 S3 ^9 d/ D' q
" z0 l8 o4 O3 u$ c4 Y5 s
% F- W* r$ c( Gto get-color% w+ m* ]: V" J# t5 n* `# j

& m6 E, N/ s# l1 Cset color blue

  L6 Y" F3 D, D4 |/ ]$ I0 @end. d7 b9 D4 P& _6 g; i- b( H- I
- Y, `* n* b" a' g# [' L. @
to poll-class
( |* P1 p1 L  o& H: Cend# Q- ^4 d5 J" P
) Z, }1 j; z7 j. k0 ?: U
to setup-plot1+ w8 f2 k- E) n3 |
$ N: y) T" t8 N" P' {, l
set-current-plot "Trends-of-Local-reputation"

& K5 k/ _+ {" T1 Z4 t$ f& w$ Q* k# e+ \# N' W, s) J. ?
set-plot-x-range 0 xmax
! i: d( N0 R4 O

7 e/ z# w1 Y3 a  B# u5 a% Zset-plot-y-range 0.0 ymax

# P+ [3 U  }; o; Uend! S9 s! e; U2 s4 n9 S" f

- P, R3 H" ?5 k" E  b. |& {to setup-plot2; ~  K' f+ c( m2 Q9 B1 t
- S$ a- w$ \7 v
set-current-plot "Trends-of-global-reputation"

4 [( d5 z# G6 s3 U6 O9 X9 u9 p* j! C  a
set-plot-x-range 0 xmax

' j! t( y( Z  k. ^+ O  I2 F# u' [* l. M& Z$ V  q
set-plot-y-range 0.0 ymax
/ X. d5 O8 m+ U3 _" Z0 G
end
! V! F9 @$ f! H& \& z
9 o8 {% M1 b1 \# p! f& y8 Wto setup-plot31 P3 k$ Y) B. @3 `3 |$ R% d
; Y9 d" \6 s" t7 ~
set-current-plot "Trends-of-credibility"
2 U! N& I+ M$ z8 `
/ w7 C9 s5 E) c; h; n, O
set-plot-x-range 0 xmax
7 {- S* N4 J: N9 P

% t: O1 s  [# T# X7 l- @set-plot-y-range 0.0 ymax

9 n& |" y! m1 {' u& c; Y7 }/ I" @end- j* K  x- G3 J; ]1 f2 u* s& X
. C8 k8 c+ X. W3 F
to do-plots
; h, @" ^) Y- Y5 o8 j8 Tset-current-plot "Trends-of-Local-reputation"
0 Q9 a. s0 D- v$ F  n+ L* tset-current-plot-pen "Honest service"
) K7 Y' v6 I5 M% mend
5 E5 s4 w' \1 I1 k- \& u( o! v5 T: `+ O# _6 ~% J# Y8 ^! M3 \9 x
[ 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.
2 D0 g) e; q. \5 n7 T: \; H
7 V( ?" G+ `* p  _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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