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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:( d, g; V- S$ T- J( z) M
to do-business
3 m  x: Z7 _2 ~) F5 g* e9 V3 Z rt random 360+ g) }0 P$ O3 ^, I9 {1 h' Y- q
fd 16 T6 i& ?2 @  D4 |4 ]
ifelse(other turtles-here != nobody)[
$ e+ @( k" ~3 p: f   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.
( w/ P+ `( m8 G' M, `5 r/ }   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ) d" D/ d$ L, P( T) ~! q
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer$ o8 U0 o9 c1 u" O
   set [trade-record-one-len] of self length [trade-record-one] of self; u7 n, t7 e" ^" m" z
   set trade-record-current( list (timer) (random money-upper-limit))
: Y1 B2 D" P7 a3 K; F. s/ Z
6 X7 T+ F3 K2 M问题的提示如下:
  t' w) h: `3 H" F- C- K  e; r; a4 Z6 X& F
error while turtle 50 running OF in procedure DO-BUSINESS2 I% F+ m1 m/ s6 g/ X) B
  called by procedure GO
2 J& E) Q0 U; HOF expected input to be a turtle agentset or turtle but got NOBODY instead.
6 a" ]  \+ L9 i& B  a+ S8 L
(halted running of go)
7 c1 t; \- i9 _  {0 d7 S$ F: c' 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~~/ i. X- Z5 m! C6 f9 }' p" L
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& j2 f6 E% m: u9 o8 Z: r
globals[
% _6 E+ Z( `& m" @xmax
" ^6 p; [+ n2 u' i( I) i/ c( rymax
+ s' v# T, Y' Q& |9 k" u0 v" Uglobal-reputation-list: ], F& _; _# Q) j. f
* G; u" J% }8 W2 B  e: Y4 ^
;;
每一个turtle的全局声誉都存在此LIST
& K" `& L  N9 q( ]5 ecredibility-list3 F4 p( k- l9 V+ K
;;
每一个turtle的评价可信度- O& g, \9 S8 c* i
honest-service4 V1 ]1 n4 }' u* Q% ~; G
unhonest-service
, |5 W8 g$ `  k7 n* ooscillation
% i0 e" u" c/ p" prand-dynamic
; \3 L5 W4 U" W/ S0 A' \; b- t]
" Y% W+ \; ~0 w3 f6 u& ?# f0 p& h; l% G/ q5 B
turtles-own[
  I0 R9 ^" E* I$ m* w; rtrade-record-all+ Y# S, b: m  G  l
;;a list of lists,
trade-record-one组成
- g4 |5 [: X7 D& Dtrade-record-one
$ g1 t- Z$ U# x+ \- L5 }( U;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
2 z) b3 j7 s+ C" v6 p, }& k
6 X- J! R' v* R9 n9 Z0 I;;[
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]]) }( m/ s- _4 q5 ~6 }
trade-record-current;;list,trade-record-one中的这个list,作为暂存用,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]0 J) Z% ]7 \6 a: I: s; Y5 z
credibility-receive ;;list,他每个turtle还需要有一个存储其他turtle对其评价质量进行评价的list
) c0 o) C) G" E3 y$ I' a- Mneighbor-total
* O" q+ G2 ~" k( |;;
记录该turtle的邻居节点的数目  e+ i/ d0 I# t8 e1 B
trade-time
. p0 d) w; B( r! W;;
当前发生交易的turtle的交易时间
$ |# H5 h7 h' Vappraise-give- s9 J# @( @: F- A+ n
;;
当前发生交易时给出的评价8 C/ G7 S0 K% |( g/ |
appraise-receive
1 F8 @3 e% T# r; e;;
当前发生交易时收到的评价
+ \9 z. T, H" P* L2 D" uappraise-time
6 y# l: N% P6 _1 o;;
当前发生交易时的评价时间: U) P. e4 Y# v* u/ n1 ?- E
local-reputation-now;;此次交易后相对于对方turtle的局部声誉+ r: ]8 b0 `. r" ?. F  u* Z
trade-times-total
0 e6 O& M' @! `# ?1 A2 {0 ^;;
与当前turtle的交易总次数  i3 O2 o9 `0 c
trade-money-total
8 s2 s# t9 j# P3 R4 n- K0 I;;
与当前turtle的交易总金额
6 V% s% i$ W6 j+ g- }. qlocal-reputation
/ _4 o" h/ k- R4 ?- \$ u/ Iglobal-reputation
5 M; X2 q1 D, |credibility
; y7 m' Q4 O7 y/ A* d;;
评价可信度,每次交易后都需要更新
% p9 F! a0 B6 [! Ecredibility-all4 A) f7 J( z( c) ?4 P& 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
# r' d0 v! r& d9 U: e& m5 H
/ f9 n  F. e" f8 `% Z;;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
: {: `# e) \1 Q' V  z1 ^0 F2 [credibility-one
, I: B: v% {* J4 k7 a;;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
9 P$ ?1 s/ |: t  ?/ Q# Dglobal-proportion
1 w# b- D% U5 @6 b( d1 Gcustomer
7 }! w  k; t( {+ ~1 ]! Dcustomer-no, z# O+ ]( f; F$ T
trust-ok2 _' l8 s( i) a2 J" E6 [
trade-record-one-len;;trade-record-one的长度2 `+ Z3 |% K5 M, {0 H
]
% c3 T1 S  w! r3 \" k* `6 _
7 X6 }0 Y$ m9 ~2 `2 ~7 h0 D$ u;;setup procedure, K' D+ C# T2 g6 H3 C3 H
5 Y& Q( f- o9 g; G3 }( z  S: M+ M
to setup8 W' [5 k/ V1 ^% ~1 k% d

9 }5 }/ p& @9 [. u# o: W5 U7 Aca

( k  G# z  W; |) {( R( z$ x4 W7 P
; l- [9 m6 U% D* g/ z, sinitialize-settings

) {! T2 O7 R' S, H
. x- t: s+ o( V# B) S) Xcrt people [setup-turtles]
# ^/ u; C5 U9 J% ?% y8 M7 [5 o
- h' s, A4 H# u9 o8 a+ P  ~
reset-timer

+ L6 H7 @$ N; F  \  Z+ ]* M- q1 V( J& v2 O9 j% Z9 H, u$ A
poll-class
9 G: a- F. g+ X6 e/ v
. l% K4 {0 y  _+ r5 u1 Q% }
setup-plots
9 x0 f, f- L( m( o& X; A. L2 Y

7 I( ]+ E% o$ q- I: }5 Ndo-plots
! z( x$ b! U; _4 D5 g
end
+ I2 y# G! L' r; f" o( p( ]4 D2 X1 W/ J/ r. i+ A" J
to initialize-settings
% \% t$ M% T% d( N; W! @
8 f! l; z$ K, u5 N2 k( C$ z8 c1 A2 }set global-reputation-list []
- _" b* u' p0 @& S

* j" `5 q; i0 oset credibility-list n-values people [0.5]
- U: R1 l& ~/ `9 c+ `: f

  J4 K( _% r9 }% r% Sset honest-service 0
, }& |! j3 ^. i9 f! \

- G! J1 `0 s" ]; {+ f  U, Cset unhonest-service 0

4 I4 G. R5 h7 z" p5 p# @) N7 |5 D  i) o9 w! ^% K; d$ v. D) S
set oscillation 0

* n* V. t4 w# f. B4 U" w- Z& M& D( @; m6 L+ y. G; @
set rand-dynamic 0

: C8 d. ^- m, [  ^end
  J5 p4 _( w8 l6 E4 {4 G9 o0 r9 D/ z8 P: w3 s, ^3 B
to setup-turtles
. Z8 P2 e# I2 [set shape "person"$ C4 d0 l( g9 ?# c
setxy random-xcor random-ycor+ O0 `/ l* `0 `; `$ m0 z/ w) L- ]3 `
set trade-record-one []* @$ n3 e" [! E5 M
7 R7 K6 _* S9 t) G5 h
set trade-record-all n-values people [(list (? + 1) 0 0)] 2 ?1 [! M1 Y) f3 W

- K* |0 w. ], `$ O% P) [6 mset trade-record-current []- Y% o' z) B2 ^; A. D7 e% p
set credibility-receive []9 H* j: x1 X4 ?( |) u6 Y1 E
set local-reputation 0.5% J6 C* O  P& m6 o) T% P* D6 U
set neighbor-total 0/ l* K1 m* j( |  v$ ~+ [
set trade-times-total 0
1 r' v( z0 @& k/ B1 U: rset trade-money-total 0
" k8 d" v; X* I( lset customer nobody
# h5 A# ~3 h  g# t2 V4 Kset credibility-all n-values people [creat-credibility]
" Q% j% C! [1 ~7 n1 ^, l  A4 [set credibility n-values people [-1]6 [, h, r; J/ J
get-color
; k" n  X$ D+ w' Z

3 b% c4 g7 F6 }: Q! j4 pend% U& Y, L8 K( |4 ~: h9 u3 S
8 C5 r# V7 O, e* q
to-report creat-credibility
% Z) V9 Q, b  R4 i  a( ereport n-values people [0.5]5 m: h* L. Z* M  g1 b$ O6 n
end+ |. M! L  a3 x7 F6 U2 b

# s, f' b5 O6 _8 F) ?" }to setup-plots6 s& T/ ?/ ~2 i" e) N
$ B0 C3 s0 j+ f& W. j2 X- q; _9 ]
set xmax 30
2 ~- A. d- f. ^6 P) j; Q7 `
; i/ I5 Y7 b: U9 ]8 r6 Z' N6 B
set ymax 1.0
$ j$ v% b! ]1 J
# h  g. ^  o8 v& F9 T* J" B
clear-all-plots

& T9 H% l* O: J* n
1 A' t1 }' A. F, K/ Z1 p6 \setup-plot1
# l& f( C0 J3 u
5 ]) R/ y6 S! ~# v
setup-plot2

, y. ]  o& w) K" Y9 y0 z+ L1 f9 V& t. J, ^: R% y
setup-plot3

( s8 d  O' |4 q+ n! \" Oend- Z1 n3 s+ c4 _$ z8 W: x

8 J5 t4 G2 h) K# Z. G% o3 p;;run time procedures# |4 o' `% @0 n- F* A7 C+ w* R

7 ~5 t  [+ L& h# |* _! C5 xto go
: ~# O% N: i3 h8 V: N
2 ^1 k/ u* x+ k1 O9 Y+ ]6 Sask turtles [do-business]

2 P/ j; D! i, C, \  Z0 _# `end( q1 P8 ?: r# S4 w

1 Z  ]% E5 v( u/ R* H; X7 b- W) Oto do-business
0 e. Z9 d- c9 J5 a, J8 f
' ^4 s9 Q: }6 E
$ [. X4 K4 D+ W) s" K
rt random 360
8 M$ _1 m! s, w( ]5 u/ @7 j% C

9 G  n2 [  a* `0 g- |0 Kfd 1
- E6 k8 p# c9 N- p+ S3 W

  T8 f' u4 E1 _4 H- D8 Kifelse(other turtles-here != nobody)[
6 T- ^. u" g$ p% l' p; f
2 [9 a( i% e& |# Q2 [) B- P5 N: x  C
set customer one-of other turtles-here
, v! s- r0 v: |$ N
% M" F6 Q- A8 ^4 N
;; set [customer] of customer myself

2 T% i0 m8 T6 F1 k1 W+ M
9 v) G9 Z( m/ {& I' K" n% ]set [trade-record-one] of self item (([who] of customer) - 1)- a- i& U( ?3 e( w
[trade-record-all]of self
. I' N( Z% }7 B5 l9 y, l;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
8 ], k6 o0 ?. R

9 r" p/ W  I; [set [trade-record-one] of customer item (([who] of self) - 1)# V3 `2 B/ B# e  ]% ~9 c
[trade-record-all]of customer

& |+ ?/ j9 J6 X$ P) j7 i4 R3 N. ^2 |' C/ f3 a4 w
set [trade-record-one-len] of self length [trade-record-one] of self

/ ^0 _! F, t( u  R" W0 ^+ }  o* M
. b$ B; e- ~6 _. E. q2 i( oset trade-record-current( list (timer) (random money-upper-limit))

  f. t! B9 C) s8 v2 m) ]6 `
: L! m5 k; @) A. y+ oask self [do-trust]' b1 S% z7 L4 a3 y
;;
先求ij的信任度
2 O1 ]) _& l' m# \0 D. M" O: ~7 k$ i
if ([trust-ok] of self)
+ e8 O  C4 V& ^6 l3 l;;
根据ij的信任度来决定是否与j进行交易[* {9 m- J; \% e; ^0 J' H; y% G* Z
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
( C! L. E; w! B
& c* i. f  }1 V" V& s, o3 ~, a[

9 X% D% M/ ?4 ^. c5 C( o& f7 D
4 G% x! {' J+ y( R" N0 g) a% L4 Fdo-trade
3 \5 m$ D' G) J( k

& U! r$ X. r4 o+ F; F4 Eupdate-credibility-ijl

) K& N$ Q, K7 [9 e" I7 V9 l$ a$ A3 m, L% F, @- w
update-credibility-list0 F5 U* \- b# K5 r: `+ M9 V2 t/ g
- |$ G5 R' N- {* W, O- t
# `' p0 x4 p8 W
update-global-reputation-list
( \- V* _+ h; s

- [$ E* |* I1 u: l' ]poll-class

4 C# a! ^! [6 w$ o
, f5 T9 i0 h, z: a. ?get-color
5 |! o& F2 z' H1 s' W  F* O5 y. ~
& d, F! M# j8 d( M
]]
8 G8 `& B. E/ O, D% i8 `& m1 D8 S0 {/ K4 X+ z
;;
如果所得的信任度满足条件,则进行交易
/ q% U. ^6 `1 _: _, f* X: S# m, {! r3 b( ?/ d
[

) e0 G/ U, E! J' D, z: D
" b* u" n$ y- {1 xrt random 360
$ S% w0 Q( ~( o
% N2 O1 ~; W+ I1 Q9 G, H' B
fd 1
7 }3 S( u0 J( \( C' q' {( o" a
. z" Z7 t3 `3 G  n* F
]
2 Z! G" `/ B' B
% o) d5 I1 Z' \+ p) J! ^
end

2 g# I3 [7 i2 j; ~, n0 y. y1 X- A( j4 m/ ?" S5 e
to do-trust $ B! J$ b% o) w1 i
set trust-ok False
. y2 h8 j3 X6 ^% W
; {1 M! Z, L3 f; ^
5 t5 V- Q5 O1 D
let max-trade-times 0
/ y" z* h$ h) H1 \* J9 U; ?foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]# ^; y2 d4 q( P2 l" S
let max-trade-money 0# I4 X4 k( v- q$ c7 ]( c
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]( ^& j/ g+ C3 `, v7 X0 L# k
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 L% h; ]) \/ _: |2 g: V4 y  p2 |/ n* ~
4 J/ l; w5 P( A- B' @$ ~
get-global-proportion- N9 {- u7 x% h$ Z
let trust-value
* u- ?$ ~' V( 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)

# X: X0 F! K$ {+ X, J+ Iif(trust-value > trade-trust-value): f1 |8 I! E+ k- m, G6 f" t* q
[set trust-ok true]$ v4 W1 y4 |* }! ~7 f# u; T/ N
end+ L. l" E# p; t: @$ f
0 T; ]& ]6 x8 r1 g! g, B9 b
to get-global-proportion3 S' U# @( r& b
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
2 l- J, _" g+ n8 N  D[set global-proportion 0]
0 v" }$ i5 M& [9 P- k. E$ }1 Z1 U& U[let i 0) h: S9 b3 Z/ o& r% ~5 B, k* U
let sum-money 0
" F& q# a' {5 Mwhile[ i < people]$ R% _1 T0 m8 p, h# y
[
/ @4 W5 }) `1 iif( length (item i$ c; I, }4 q& G1 u- M
[trade-record-all] of customer) > 3 )

; n: w8 u3 k/ v6 L[
! _# `. d5 {3 k0 J* k4 Wset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
& R$ i" B! d' D1 o]; R+ ~! ~, L2 E8 L
]: F* E7 [2 M$ K8 L$ Z" G% Y
let j 0
4 L. X5 `  g; c" Y' vlet note 0( {  p$ I. j' N$ V7 t
while[ j < people]; Q, A% V( j6 g  L1 s
[
. G% E7 b2 r1 z& _( T- A, u% Y0 Lif( length (item i3 O; A$ I' P2 N4 {& j6 t/ q8 a. \
[trade-record-all] of customer) > 3 )

# ?' j3 M6 K" K  M) a[, i" y: |; p$ D7 B2 q6 I7 T* D
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
5 M$ b2 B. S! [# D: n  Q1 F[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
% Q9 P! `6 [5 h8 z, c! s* J+ `[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
3 @$ S: ]" B; |( E. B]
2 X8 r2 `9 Q7 e1 t]
. J0 c) h! r8 V! Yset global-proportion note
5 ~/ w' D% w( t" A7 {3 b8 O+ }0 a]
& z- O3 m# W7 C( ?1 O+ ^end! \) _- a( F8 Q

0 h( h4 b! j9 sto do-trade7 V3 M% [# O8 F
;;
这个过程实际上是给双方作出评价的过程% l1 ?$ ]  S) W5 t
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价8 `% X6 O2 J. n! J/ Z- {
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价  ~3 F  y5 N- j) o' L
set trade-record-current lput(timer) trade-record-current
0 ?9 p, j; Y0 Z) Q2 ^;;
评价时间
' i4 k1 A: y2 j) Cask myself [7 G4 F, {5 w, L- ^& K* ^# o/ [3 Y
update-local-reputation% x4 ]1 y6 d2 s" @+ e' ^! D
set trade-record-current lput([local-reputation] of myself) trade-record-current
' V7 n5 h/ ]+ I% {' ]+ Q' O]0 d8 C( f9 I! t, s4 c- q+ Y; i
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself/ e; }: ~! m; Y7 t5 K. ^5 u% c
;;
将此次交易的记录加入到trade-record-one  C* H1 q% v$ t2 g6 l  k
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)* b: P; h$ X2 |1 [
let note (item 2 trade-record-current )
  d. j# Q; M) Jset trade-record-current3 J+ s- V1 N+ r% D  p' H7 P. S0 w
(replace-item 2 trade-record-current (item 3 trade-record-current))
( i5 R9 Z/ k- y# K& N
set trade-record-current
5 W3 M) X0 x. S3 y6 f: m(replace-item 3 trade-record-current note)* e9 Z  h8 b0 R  o

9 i8 y! ~3 G3 B

- P, Y' m  C: N5 Q# P: sask customer [# S" w! g$ y! _* j/ d
update-local-reputation( E; b# o. C& n' I: `# v
set trade-record-current
  L1 Z" `4 u* i7 o( X( o(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
) J5 X. V2 b! v/ t0 D) Z( t
]# G% M$ q# P2 k) T0 P  f0 b
, U- M: q$ g( q4 d) m2 p

: M. [8 C9 ?; Zset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer; z2 B9 S. Z1 _
/ Z) E& y. E/ C- u2 w; S0 ?1 q/ ^- [
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))# L! F) G6 x( n
;;
将此次交易的记录加入到customertrade-record-all
6 j+ V& Z& K: Y& X- F. Zend
4 U& p' a6 ~( X# x' v3 J1 D  d& z4 L3 G- T/ |$ a) G% n' i" a7 R
to update-local-reputation
4 P  t3 U. `0 q9 j2 P9 j5 ]( n( Eset [trade-record-one-len] of myself length [trade-record-one] of myself
  U) e+ J9 z* _  ]7 j* q) K
0 v' w& M- Q0 {2 H/ s
: D, W9 }9 d6 };;if [trade-record-one-len] of myself > 3
# \9 ~0 |3 e* K' m. l% W
update-neighbor-total
, v0 Y2 l9 U9 p  J1 i4 p;;
更新邻居节点的数目,在此进行
$ [2 P0 Z9 c6 y. B7 ^% F3 F$ L. ilet i 3. [5 e9 t: _2 {# T! N
let sum-time 0
" D/ i: @4 v$ N1 k: fwhile[i < [trade-record-one-len] of myself]
% r/ u$ I, U6 t- C% C$ \: V) I1 d8 E[" ?8 M+ ]2 C3 A; v
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
$ \$ j% S7 I7 D" e; T: L1 Rset i
  [0 A1 C+ ^! ?+ e( i + 1)

$ D; q# ^4 T) N8 N: X5 ~; q]
6 K0 K9 a0 j$ k1 v: Olet j 38 [$ F- m" i( }! a$ i6 h- a" H
let sum-money 00 ~% g2 o# R( T7 K& k- L
while[j < [trade-record-one-len] of myself]8 U5 l! U, D+ n) x( _' _* {
[
5 K0 M: ]3 h' vset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time), ~- u0 s0 |3 W. ~( a
set j6 a+ I6 \* l' h3 m. u. b, j. e
( j + 1)

" I0 T+ l, m' ?- h. b3 m]
* ?3 L) |. A) U6 Elet k 3
/ I4 G) ]5 U. G" t* ~5 zlet power 0( m# O: |2 _' s5 S7 `" N
let local 0; n  m) b6 U9 V% J( {" W
while [k <[trade-record-one-len] of myself]
* E" w+ v  _9 @7 O[, A7 y$ p) d  r7 C+ b9 a
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 ]% L. F- B! E+ J3 D# |set k (k + 1)3 x' K# O, b* E, U% U0 u2 l
]
2 R) S" j; Z1 i8 o& I1 n8 rset [local-reputation] of myself (local)& A9 g- D7 r8 F2 x
end* ]3 r! S, x) K5 x. Z3 }
+ f! n/ L" e& X5 E8 P
to update-neighbor-total
+ u. ]* e6 E  _% e) x' E4 {9 T$ k& Y3 I8 n& a
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]' `! x/ z' ~$ I' }5 R  r
, E4 N! R$ |) F: W& Y3 |, T; E

3 V  s, F! D  `/ i, _9 @end
: z2 T, s% F0 e  _' Q; f& r  g- h( }' n2 X) Q, U% K
to update-credibility-ijl
' A! J6 L: j4 I  A# |5 w. H3 {6 r4 F+ o  ^$ i& i$ Y, 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。
! F6 s6 I" s: clet l 01 T. L( s* C# {  o
while[ l < people ]
5 q* L% z6 o& ~; t% \& F+ 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2 a) H2 ~7 Y/ ~3 f/ z/ A* P9 I
[, o+ x1 N+ B, |4 U% R$ b* G4 X: o" c
let trade-record-one-j-l-len length item l ([trade-record-all] of customer), J' ]# a* Z/ l. j
if (trade-record-one-j-l-len > 3)% U  g2 Q$ O. j1 \
[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-one8 \% J6 u2 [; |9 \: V  H
let i 36 Z, k0 v# I0 C! n3 g- s/ V6 C
let sum-time 0" N$ p  G$ q; L( C5 Y- Z6 Y: v
while[i < trade-record-one-len]
. k5 [( e' v2 k$ L4 K6 c[
2 Y, N# l& a* oset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )! v4 }+ W& a2 \' m/ _& \
set i, s$ `. I" j6 j! U+ l" Z  h( W
( i + 1)

. A" N- G1 u& f2 q& m& d+ @2 s; x) o]3 w- x$ u! G/ W1 A
let credibility-i-j-l 0" C/ s; v' n! n- w' u
;;i
评价(jjl的评价)
, K; Z9 r# o1 b# xlet j 3  L8 e% U, U; p! M) N
let k 43 Q8 _2 D0 h# n/ X, ]( p7 |  D* A3 u
while[j < trade-record-one-len]9 F6 C# y  Y6 Q2 N
[" \( |. L- D' S, c2 N& u: w
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 l% \5 D# h% y) V$ y& ^7 k
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)
) B1 j- M. @, D* f0 e" xset j
  B4 U& X1 b" C# {! x( j + 1)
4 E( K( u  m0 v( E
]6 n+ Y0 j' e' Z4 W6 P# c% E
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 ))1 i9 v' Z; S' u, d
3 r5 F: S) U% f! r# e  o1 A; I
, Y* U' s8 c" r+ t
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
) u; G# @; q/ L7 t;;
及时更新il的评价质量的评价
3 a) q/ \: y' u- uset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
: a' q$ j' ^3 i2 D/ P) Hset l (l + 1)
0 x8 M/ J6 v6 {* B9 H]
8 T) t4 y6 O! jend, l# Q% T' }# x( N

6 n% g. F' d3 W. N% cto update-credibility-list
: X$ ^4 j8 y* |( Rlet i 0
+ M# W+ D+ K: Q% z5 Pwhile[i < people]5 @& |6 s3 u+ F0 r) K& a  b" b! k$ f6 b
[
, W& ^- D8 |6 W/ olet j 0
& L# {2 u/ g# h$ s" d* V; V  Ilet note 0
* e" u+ [7 J0 D$ I. \let k 0
% X5 M, i# @8 g5 _;;
计作出过评价的邻居节点的数目8 g, U4 I& Z4 y4 B" M" p
while[j < people]
$ O6 m1 U9 F( S" V[4 k: c( G9 x- Q/ R4 N/ k6 I5 E" q" i
if (item j( [credibility] of turtle (i + 1)) != -1)
  j# H0 e, ^; ]3 r0 p# I;;
判断是否给本turtle的评价质量做出过评价的节点  I+ D# |; F/ d, N  P
[set note (note + item j ([credibility]of turtle (i + 1)))
7 h" L3 O# H) V1 ~/ g6 {  I* x8 u;;*(exp (-(people - 2)))/(people - 2))]
" V3 R( f$ Z5 d9 I  \" d1 j; f
set k (k + 1)) P0 p4 m' P( F$ H$ b
]
; |! d) m3 X4 R; T4 t1 ^5 lset j (j + 1)( f/ r5 |; h3 K  K6 T
]% M: }( L/ U+ O
set note (note *(exp (- (1 / k)))/ k)
9 ]4 F5 y# N5 @8 Uset credibility-list (replace-item i credibility-list note)  H; l4 }- |  R6 c) J
set i (i + 1)
7 r# R! x* P1 \]
( B5 m# X; F$ X5 U8 s' C- H4 mend
$ J& {" v+ M, D8 E; X  g+ Q2 W0 [
8 N" i% K3 C+ Qto update-global-reputation-list
; O' g+ I( B( x9 Xlet j 0$ t2 v- m3 G  C% l# x
while[j < people]: t7 \$ j, h. ~$ v: [; w
[
' X4 [' _6 U5 G& B9 [) h4 J" K' {8 Z5 \let new 01 A: t+ ?8 u4 F
;;
暂存新的一个全局声誉
, M5 y% a  `7 L- J7 ]let i 0' s) ]/ z: v( a/ w9 b
let sum-money 0  a& Z8 x8 A! e7 V
let credibility-money 0
$ h0 H# h+ {# |5 N9 |) e" s9 T$ vwhile [i < people]$ ]+ ]. D) |; Q# Y$ n! a
[
) {6 J8 T/ E8 h- P/ W+ mset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
! u% h/ Y2 y1 ^$ M9 mset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
5 I9 g. J' B$ Z, U  uset i (i + 1)
; z, ^3 \$ A9 w2 X2 {8 o; r]
! W: l0 s2 M! e  x  N5 K' klet k 02 p1 ?$ k& M( x8 r7 k" l  R  i: ^
let new1 01 f$ W" ]9 o: A
while [k < people]
9 y7 |+ n) B  j8 F[
: }6 V$ q( s( X9 M0 o- U+ Tset 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)
! ]1 ?2 w$ |: v; T; ]; ?6 zset k (k + 1)
1 ?+ O6 d- ^+ D& {4 y# s$ e]- j6 {$ m: h9 C- L* l! Q
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
4 p+ f- {! e, jset global-reputation-list (replace-item j global-reputation-list new)
& e% j" x% z4 L) u& Yset j (j + 1)
0 p$ v- ~& ?, S1 N; r$ n]
4 \8 ?$ m3 K! h4 I. I% _5 Oend
$ K* x- S9 ^7 F& k3 ^3 o
+ E+ B& W0 N# ?' k8 M3 h6 v% x& p8 O! f
: }) `7 O3 I* x+ y
to get-color
/ x+ J& q+ j" H* n8 \5 J+ ]; j& O1 T# ?3 V
set color blue
. {0 R# X- N7 a: S0 M
end& Y5 r7 q3 J( g6 H

! E4 r* C; t3 Y7 r: x! g2 |to poll-class
9 o$ |0 b- b0 d# j! u3 xend
+ g: G7 K: |' V8 [2 e$ f% x7 E
' Y* q) u- e7 p. t: sto setup-plot1
2 }" b, l* A/ y8 i2 o( l; Y2 I' l- z0 u! W% y0 A5 O) d# _
set-current-plot "Trends-of-Local-reputation"
) Y# C( Y# _' A; {1 N; O0 p
& {- b9 A# U5 _$ }4 {
set-plot-x-range 0 xmax

% \1 T! _: g( R; G( U+ u) l- b
/ f! O6 o, C; ?0 U% \7 b8 Rset-plot-y-range 0.0 ymax
- X% @0 P. R1 t8 d
end
% ^$ {+ _9 {: z7 D+ e- @5 E# A8 `8 }, [- R
to setup-plot2' Q3 t) [: q* A6 v8 I

( N  m. i/ x' M0 {9 ?set-current-plot "Trends-of-global-reputation"
4 ?' W: X1 {* m. C% X
! t4 |! j5 @, W% N9 N8 g
set-plot-x-range 0 xmax
& m7 j: V% d- Q5 p7 T% i& C5 b

9 s. E# O4 K3 A8 o% v& bset-plot-y-range 0.0 ymax
/ x. `: H5 l4 V# J( I
end$ M) [# o; s: c, q, i5 M: K
& y" \/ w1 W  x7 `, |, u9 E
to setup-plot3
0 L9 H& S& h; F4 P. S0 u
( `. Z; ?; r+ A) J$ `# w+ Yset-current-plot "Trends-of-credibility"
0 x: X9 a% W5 a

; u# |8 Z' b* K; ^set-plot-x-range 0 xmax
$ F6 b8 r* k/ e
) Q7 _9 l3 l0 o5 Q; Y0 C$ g
set-plot-y-range 0.0 ymax
/ U- q! ?7 W0 w+ V7 \/ n, R
end- _& L& f8 Y2 R9 w# P' j7 Q) u6 t5 ?, b
- m  l; G5 Y+ L" H) V
to do-plots# h9 T! {  R: Z) W$ v" D4 j) J% v
set-current-plot "Trends-of-Local-reputation"
6 l( M9 v3 C" q+ h) wset-current-plot-pen "Honest service"8 J: N- s8 r0 Q$ W' Q% f8 @; B
end+ J! X0 o6 S+ P( }) q; u4 {$ y* [
) E5 h7 |3 g- L7 t0 B  T0 a
[ 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.) s3 m2 S0 Y3 E+ V. ^/ R
- o" w7 N% X9 K- m, f4 b  q2 w
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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