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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:
# K; A! P& M2 V8 r# tto do-business ( T" g8 P/ }, C
rt random 360
( u; h; Q" C- r% K( e fd 1
5 ~  q; D3 d1 ]1 [ ifelse(other turtles-here != nobody)[
5 w% [. [# s& U( j   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.$ M0 Q( ^7 Q$ Y: D
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
; r1 y" \0 ?) m6 N. W" T9 {   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
) H: G( I0 [, |) X% o8 ?  `1 w7 u; k) k   set [trade-record-one-len] of self length [trade-record-one] of self
* w3 d! b3 E- N) d5 Y0 s5 ]   set trade-record-current( list (timer) (random money-upper-limit))
7 F$ k& ^' a$ @( _2 U6 o7 T/ Z8 S- w/ v6 H9 f# F& @9 B
问题的提示如下:
2 w: F' _: d% P6 ~5 L, {$ V8 }9 t: i7 Y/ u0 A' @
error while turtle 50 running OF in procedure DO-BUSINESS
$ w% V3 l2 B8 ?9 [  called by procedure GO* v+ R7 V# z/ ^9 k$ p* L
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
6 z0 N' \. W$ L" B- E* Z
(halted running of go)
. J) x5 @5 n6 O3 ?$ @: {/ d; F4 C1 U8 G
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~~! ~( {9 p, O6 p& G
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* z; W# S+ d1 C( @! p8 v7 ]
globals[4 q) {9 \7 w* i9 h, b8 U
xmax1 b; |; N! ^' [" G% w$ ?) Y/ U
ymax
/ [6 t/ G8 S$ v% l6 L& ~global-reputation-list( i+ o" q+ S2 g! y1 j
$ O, b/ ~3 `( `6 T" i! p% l+ b& u
;;
每一个turtle的全局声誉都存在此LIST
0 v9 a% n  d5 I9 w( Q: vcredibility-list1 Y! j+ R" {2 ]9 M  ~% }
;;
每一个turtle的评价可信度
3 [1 u  i/ k3 v, G, |- n( m2 h8 Uhonest-service( C! G2 H+ {8 s) C, Z
unhonest-service
+ i- A( Q# H0 h. [5 h) soscillation
% g! I3 D$ R9 orand-dynamic
$ j* n3 D# @; w8 e! Z, b" `]9 m  _8 x. d% D# Y% i
/ \( e$ V' N. y0 Y
turtles-own[
# s+ T6 k. t8 D: y1 f+ Htrade-record-all. Y6 p$ `6 d) @
;;a list of lists,
trade-record-one组成# t0 N+ L! Z& E8 ~1 _; t# u& ^! d& W
trade-record-one/ N% A  `" A# l5 ?  J
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
4 ^4 E$ T( V; w8 b: t) o; w
& [6 ^( }. D. B% d' `1 Y;;[
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]]% }* t* I: h$ K: w: ~' R
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]
1 Z- {4 p( N% m  k7 n( _# L4 Ocredibility-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
9 ?7 P) T; J# fneighbor-total
# {  F" e7 g" E+ d. X& ]+ O: N;;
记录该turtle的邻居节点的数目" c( ?0 q, A3 i: D5 h, g2 V! o
trade-time
8 m6 e- I$ M( y2 r;;
当前发生交易的turtle的交易时间
8 l  L/ D8 M, R* N5 i. `2 }* Qappraise-give
: j* A' {3 g1 c6 S( [* ?;;
当前发生交易时给出的评价
, n+ O; E& U* m3 Cappraise-receive
4 s6 o) y8 w  Z7 p8 l5 f+ C# h;;
当前发生交易时收到的评价
9 G9 T: R( c/ Q6 a8 G- [appraise-time
% I' f, X1 Y$ I" S0 c;;
当前发生交易时的评价时间. }  C( s  g1 b
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
' E$ \1 ?- T( Z3 i; S' e$ O8 B: ntrade-times-total1 }; W1 g% Q4 |( Y; p
;;
与当前turtle的交易总次数, y9 z6 h) k- j" A7 b$ ]6 D
trade-money-total
( n$ \/ Z- Z+ ^0 B  w;;
与当前turtle的交易总金额
5 g% q6 r) S, U1 }8 C. blocal-reputation' l5 ?; i! [' Z9 p
global-reputation$ [4 {6 h3 f; j& [+ S" M' v% V% i
credibility$ p$ @" H& l0 i/ [
;;
评价可信度,每次交易后都需要更新
) X4 O( j' D" T" ^credibility-all
+ h* F( [$ n+ q8 @0 S0 l: S8 };;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% s  G8 ^7 M$ s) _+ {: L3 S- Q1 s1 F$ p- 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0.50 q0 T" i5 Y0 ]8 D
credibility-one
2 Y% U1 B  v; V: h/ l;;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
4 u! K7 Z7 T. Y& X- y; c4 nglobal-proportion
3 W) Q- d$ z6 i$ }8 F8 vcustomer! w+ e: y& O2 `9 n+ j
customer-no9 p0 \" |/ e$ K" Y5 ]
trust-ok
* o* D  E  Q4 U4 i9 Z: d/ gtrade-record-one-len;;trade-record-one的长度
5 U) a( w% V) t! F]
3 y# g& i: |: |, y2 u  a/ {' T% A% Z* t
;;setup procedure: g% u& J3 G' P% B, U/ f8 U0 L
0 f6 C7 w  s' R
to setup! g2 K/ F! ~% v; I0 ], B
$ Q( B2 H, [. R0 t9 Y& A
ca
5 a, R0 D& {7 r; Q4 `: A+ c  N5 I
0 ^+ g2 l$ U; o- h
initialize-settings

6 E" [* t* F# ~3 S7 q
' Z. ~* B) Q7 \5 w, `1 b9 V5 Gcrt people [setup-turtles]
) z8 j$ S) @- i% z; l$ ^* N
5 n. W" i( l5 L" }# Q
reset-timer
$ m7 P& W7 ]/ {3 P

& q% y3 Z9 j! E. ?( ppoll-class

/ r) R: Y& `. |6 v3 H! o( x2 q$ |9 ]8 H6 B! N7 U; T# ~
setup-plots
% B! s0 T7 `5 t2 j8 s/ T

0 V- h& s7 h3 K: u+ vdo-plots
* G4 h1 `, P# Y
end9 k9 Y% M* ^* l7 ?" J" x( ^7 I

1 Z- T7 B- i' X; N: }6 [$ ?to initialize-settings
7 u5 Q* I( @. R: C& |+ |: W
! g, _* ^- P2 [0 e# [8 a! _set global-reputation-list []
- ~. z1 `+ d% `! ?
' l( g; J5 \- S$ ]( H/ L
set credibility-list n-values people [0.5]
1 l  f7 q3 Z/ q3 ]& i9 B- u; \

7 f, J7 I: V; E3 d2 t  U# fset honest-service 0
2 W  j  L* p4 }' I8 Y
# P) O# b3 _. c2 t9 u* ?/ N# a
set unhonest-service 0
( W2 M  N/ d6 d4 G8 `" t) a

5 B$ O+ v) z4 `set oscillation 0

  x! f' p3 ]2 c) n6 a; M1 v8 f2 v$ M
set rand-dynamic 0

# [1 w  }, G/ o, mend
7 G% b" r9 l5 k6 l% l+ K: O/ s- q: Z$ G3 H" N
to setup-turtles ! x  q& J) X" R3 A
set shape "person"& w! G9 w5 o* u3 B2 |: z6 m' U6 m% G9 P
setxy random-xcor random-ycor: a0 v1 c5 \1 L+ M
set trade-record-one []( m/ ^0 X0 P3 z7 H6 k. w
5 ?# \& z0 b) [* X3 y
set trade-record-all n-values people [(list (? + 1) 0 0)] : O3 T0 \1 p7 y& o
- A0 \6 [- P: o* _0 S0 f. F
set trade-record-current []
$ u' T+ h2 o4 Y/ Nset credibility-receive []
6 {6 G8 o/ B, w$ \8 Tset local-reputation 0.50 u  `9 X& [+ ], W0 q2 W% T
set neighbor-total 0  {# k- O7 N0 T* M
set trade-times-total 0
; d$ k1 M% ]: n: k/ j1 L& kset trade-money-total 0
7 n7 V0 j1 e% X, _; R' X7 K5 A: yset customer nobody, X  H; u0 l$ s$ k3 X1 F. a) _( [* _
set credibility-all n-values people [creat-credibility]
' R2 \! K' K, `: gset credibility n-values people [-1]
' o. |; S0 a- ]# E9 `- Z) E) qget-color
5 X) T! ]5 e- R+ W9 C
% o% z8 |, w- E3 P# W9 Q( B  a
end& B% X/ V% v; u2 V7 b1 ?
- `2 {2 E' p& e0 d  ]  A
to-report creat-credibility: [. |! {! b% j( o0 U% {
report n-values people [0.5]
  c* I3 O# h2 `$ G  f2 Kend
4 t- B2 w4 H* F- V, r: R! d6 V9 B6 u& d) [  Y; G0 j8 k. ?; K+ `
to setup-plots  J5 m3 [( P. `9 M8 b
4 \  o, `2 b1 {' \* L
set xmax 30

% I( u, f. m; k( v: v, Z% m; j7 b/ _
set ymax 1.0

+ F, M7 N' c" x- k) B# p. r- E! y5 B: t( y; g/ L3 g
clear-all-plots
- R' S& ~3 Y) u' o* J% T  u4 h

1 }% h4 D: G( K5 m  }5 P- V' ysetup-plot1
$ A+ k3 |; F  e
+ V* I1 c0 ^; I8 ^6 ?3 H0 n
setup-plot2

8 K$ e! g% d: t& d9 c& z
3 ~4 \; y1 R7 z0 Z# a) T, A, ?setup-plot3
( T2 {0 x, x" W# F  T) d
end/ V+ x! ^* i6 N  T6 f! S
* o; {5 ~/ Z$ Z+ ~0 H
;;run time procedures$ q  V0 p/ ~6 W' @! Y2 G4 y
5 u# `0 M( g  R( ~" V% T
to go
9 A$ _- o7 j6 W( N& M" n# \3 x$ D; K) v1 }: [+ G
ask turtles [do-business]
/ u8 I2 [, k/ l! o
end/ @+ o' \: V6 Y( v6 j
( G/ o# P0 \3 F) W! ^0 N& K
to do-business
3 |2 I" i' s: S# r% L

+ {7 V7 }. c/ N' u) h0 F( L; Z% E9 z, e( `
rt random 360
- J+ X5 o# I- G- ?/ F

! p. f& [' d; s6 g% Gfd 1

: K* c7 A- @$ Z7 @' P, ]) ]/ h1 u/ Q9 O! N) f. O4 \4 `4 Y
ifelse(other turtles-here != nobody)[

0 o8 K8 N8 Y  D+ }
% d  v( O1 b$ m0 K! l3 m3 wset customer one-of other turtles-here

( M8 z* E! |* m1 O4 y  w! q/ @6 L. c+ e8 [# Z
;; set [customer] of customer myself
$ Z4 o( t: k2 r( L0 A0 u
4 }3 F9 A5 X3 u$ \! i
set [trade-record-one] of self item (([who] of customer) - 1)% F" Z! ~* T6 V) f* ~
[trade-record-all]of self
0 ~/ E. d. t* z- A;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
! \! ~  N( M% ^, y) }
$ ^$ E5 U" k9 a) r- g: b4 ^' D
set [trade-record-one] of customer item (([who] of self) - 1); k! O/ _( P; c1 }) F) j7 ?
[trade-record-all]of customer
% ]2 h" w+ j) X) l# {  z6 J: B' U

" r7 Y8 g* ?- @" cset [trade-record-one-len] of self length [trade-record-one] of self

; [& R% G( e% X) L' I0 D: e  v- y0 D
set trade-record-current( list (timer) (random money-upper-limit))
" ^( d% |$ `" s8 h7 z9 I3 @

0 u1 L2 _* J- B6 N* k2 X% oask self [do-trust]
8 d* {: o8 x3 ]) a0 W;;
先求ij的信任度
! G1 Z, L( D- n$ \  c! N% I1 V% N9 n' [% `  n' r
if ([trust-ok] of self)
& A9 O. Z4 H+ P+ m; ]. P;;
根据ij的信任度来决定是否与j进行交易[; |; J$ J5 K4 u2 j
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
; n! ^: L! ]% o" e8 ]* \2 `: {! x8 e# z6 I4 q
[
* ?( m8 k$ m: Q: G% g+ F3 }
: M0 a6 b, A; B/ C1 D8 X5 h
do-trade
/ K  v4 i  ^" E) B/ O; p+ b: z
3 s. L! K  C# X  ]: R/ }/ ^1 _
update-credibility-ijl

0 M8 X. p/ l& x6 O8 z# ]) y7 @* @
update-credibility-list
6 M- b* S2 [4 D2 o2 J# O! Z! f* N

* M5 c" Y1 a  D3 `/ Y/ X" N7 `; z( ?9 I& h
update-global-reputation-list

* j7 Y9 A. h7 K5 s8 [# D* Y  B2 L6 j9 t( r. B1 c7 ^) p
poll-class
) t& ^, b% E+ E! \1 C
4 l" k2 I7 G/ t7 }8 }- r' B) {
get-color

: ]0 n( L7 c  F9 {2 I7 C9 S, t
% e2 ]; V6 O1 k* S- o]]
; t; S' a- w( M" A" v7 G: [# T4 a4 x# ?  k0 @! C
;;
如果所得的信任度满足条件,则进行交易( o! F6 F: L- [4 ^" V' ^
# p) x" E( ~7 o9 |
[

8 y( w) q5 ]3 u$ q
$ U3 W( C) t, ~+ q, ?! ^rt random 360
$ y" t1 K- U" l& F( ~! [9 k

8 o5 c. a9 e! B* M. Sfd 1

" U1 u- ~7 m5 B8 y; J) @+ [4 ^- Y% d/ ^! `) O; u
]
! F( U" B+ \  c8 o3 [) x: D( Q* R
' s' H$ a8 r; Y& b8 V* r8 d$ r+ M
end

, w7 d/ C5 ^; n0 i. g/ I0 R
5 n* i4 f' j+ }8 Pto do-trust
2 Q. {- h' F7 P# l0 p- h1 {set trust-ok False3 _4 U  k0 p- C$ M! s/ W

1 Z& N3 h+ Z+ B5 i( d8 Q$ M4 O

, M0 _: q6 `# E5 vlet max-trade-times 03 G/ F/ F1 B. Y; z- e  R) t% z
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]# N9 _, N# [6 p! c0 T: N, b
let max-trade-money 06 S3 `6 U; z& a( \8 f  q
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]# w7 A; K, j8 u! f. e+ {+ _
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
7 l" P6 f  P: U  a# s/ m
: a* S0 O8 V& _) o7 Y

& \! Y) z0 I2 P  m0 G3 w. I# rget-global-proportion
6 b* h4 u* P, g# {9 N4 V- R1 rlet trust-value1 n! f; v- M/ O: c0 B
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)
( f# Z+ f' d9 y8 }: u
if(trust-value > trade-trust-value)3 z6 w! o  R0 V% I. h, b
[set trust-ok true]
- Z5 l5 a( S" s$ |1 ^  P* l, xend8 M4 }, ?" Z5 b: {- Q
" G4 z2 _, I( L1 B; V3 G- q
to get-global-proportion
% w# I2 n9 f  M0 g7 U: Iifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)( V7 B4 ~8 i% J; o! ]) l  ^
[set global-proportion 0]# s2 |1 Q+ U. Z! d. `9 m
[let i 0
; k5 C4 f7 M6 C4 i( Zlet sum-money 0, B9 T( P) J6 H+ P' D8 v& w1 ~) |" X
while[ i < people]
9 o4 X' q9 U. H( p# L2 @[7 m  L+ ~; `8 u* @4 {1 C7 I- z
if( length (item i  |) J) {% k% R  J5 z" `, J/ f
[trade-record-all] of customer) > 3 )
' k  e6 G6 G4 g  |
[
  i( ?+ N1 ^% ?0 Aset sum-money (sum-money + item 2(item i [trade-record-all] of myself))2 ~3 b: t1 u7 G4 ^+ O! z
]
8 E/ T" c0 M  m$ ~$ @  O& c' z]+ m8 ?1 _" I; {, W8 i. J. @( S8 ]. o( p
let j 0
7 w# I, I3 V3 R4 B* p' @let note 0% y, c6 \' \3 P2 t* L% M
while[ j < people]4 @+ V% p' {  v2 G9 S+ w
[
7 o# K4 j1 b; o, `0 ~+ jif( length (item i# z+ V0 Q( W0 K9 w" @# m1 V
[trade-record-all] of customer) > 3 )

$ a7 u4 G$ r- ][
& _6 J% i% {. a1 Z% gifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
4 a* d4 d% F2 j[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
: ^! F! {9 u  X  ?4 B' T[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
" ]" G5 x5 @2 i2 n+ p]
" H: F2 w$ c" c1 f]
! K( a2 v1 g; t+ V5 U. T7 ?4 Yset global-proportion note3 I' c  C1 O. }: l% v$ l
]
  \" P: `0 X$ lend
" O: ~8 M2 {! v+ p% d  q( g; H6 R' S, f5 I( [: H2 A5 }
to do-trade- L3 {4 U0 J8 ?2 }3 v& r
;;
这个过程实际上是给双方作出评价的过程
% A; l3 [- C4 }" i; e* s4 Hset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价. z% O1 _3 v6 A3 p, G
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价) t/ P, j$ p8 K5 V- C
set trade-record-current lput(timer) trade-record-current
/ [9 k- U9 {4 T: ?+ ?6 e) ]/ j;;
评价时间( F# e7 Y, b( w+ K7 h2 Z
ask myself [" j, j+ H. D: g2 X
update-local-reputation
# P' N" M1 H7 ~% a7 K4 Q! Z+ Bset trade-record-current lput([local-reputation] of myself) trade-record-current
( n! k% a5 ~" v# ]/ A]
" Y) w5 r3 ^4 @: k6 wset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
' ]7 R  v. Y" L4 a+ S;;
将此次交易的记录加入到trade-record-one
' ~# t$ y& y% D! c. lset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
5 s; S8 j. `9 l  `, k1 elet note (item 2 trade-record-current )) }, d  [. Z) N5 Z5 S
set trade-record-current
0 d  m' ^3 t: u6 v% V2 }(replace-item 2 trade-record-current (item 3 trade-record-current))

* B' a, @. n. dset trade-record-current
3 K; c% Y; p/ Z5 F. {# h(replace-item 3 trade-record-current note)
2 \' d0 w5 I3 b, C% t  _
! A" V' {# W& o& ]9 I
/ ]4 o7 o: x! k0 c+ ]7 u. @
ask customer [
6 t0 `$ Z& _5 }6 v+ C& rupdate-local-reputation) m: Q7 t: [: k# P
set trade-record-current
/ m! Z/ n- ?0 n" G6 p( M8 H(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
8 k4 n1 ?8 o7 `' r* X
]
# u: z# ~9 R/ V" n. ^7 J+ t0 p$ T/ }! o7 |" b+ S8 x

2 E4 k6 Y8 O4 \* {; Q3 ]set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer( V! M6 i  X% K  Q, ]  q; X

# S3 b+ t2 x/ e0 A) O1 ]" s) A' rset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))5 ^7 _7 V1 U: q) `7 h5 s
;;
将此次交易的记录加入到customertrade-record-all8 Z8 C, x6 M4 S5 x, N; a! L. A
end
8 {8 G3 t  ^2 a8 h3 s7 P+ q2 X% _. G( y: O
to update-local-reputation; k0 l6 r$ Q3 {' t
set [trade-record-one-len] of myself length [trade-record-one] of myself
) f) y& y3 }* C2 ]  ]  o$ O
0 t; O" E! ^) y  s) t. E. n$ }9 [; k/ X
;;if [trade-record-one-len] of myself > 3

4 H6 P) u3 _4 Z: [  dupdate-neighbor-total
9 t. ?! C) ?0 b+ Q2 b) I;;
更新邻居节点的数目,在此进行% n+ T& @& S2 a: ~/ N% L& `
let i 3, A1 W; w( n8 R. e! {! f
let sum-time 0, L/ A, f2 r) u6 H
while[i < [trade-record-one-len] of myself]6 i* B0 L$ r9 ]( S; g( Z) S
[/ f3 ~4 Y2 {! y0 `5 o, y" x
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )- V9 W) `7 r1 }* c( S. B; j* Z( W
set i
: O6 k1 ?' n% F# h9 Q0 g& W( i + 1)

' q( h9 T) s3 R( H8 _7 |]
" L3 s7 J* E1 m% o9 s) H& o/ jlet j 3# v: B3 y0 r/ z% A  J# \1 \
let sum-money 0
  ^/ u  b5 k# ?5 I. v/ E# ywhile[j < [trade-record-one-len] of myself]7 i# V; D& R! ~5 Y
[
% R; b' j) J" T% d3 B, D& g0 T/ ^8 _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)5 j5 m& Q, K) V0 p
set j# @& |3 I5 _* s9 D
( j + 1)

, r: X9 v6 x3 _% {- |: P9 u$ K! K]' e9 [- D: V+ Z0 \
let k 3- T, C0 E, O# i6 j' ]
let power 0
7 j, C* _: K$ z! `9 K' M. e' _let local 0) B* K% k3 N/ `/ \
while [k <[trade-record-one-len] of myself]
0 S$ \. m4 X9 c2 }[
- h* F6 Z) j+ z8 V* y% x: ^3 ]  jset 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)
, U( J5 _! W# u' y+ ~' [; Sset k (k + 1)9 z: Q% x+ K2 t0 ~) j* z
]
/ M  [2 @5 G' Hset [local-reputation] of myself (local)* @. R/ h7 h$ ]) A6 v
end
& V; h5 w) z4 P9 w1 l0 [( v6 f! L& U: Y3 J. j& r( P# z( o
to update-neighbor-total# t' O% M: {8 \% h
. |, T& w8 n7 Q. }8 P
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]/ M/ \7 Y* I$ L' f8 N

6 q! N& g$ k* N* I& g: T1 d
. T0 z/ R7 I% y- s/ ]: w
end
- a5 u; u/ z4 G6 O7 n- P; b$ F! `8 [1 }4 e, z2 H7 t1 [5 i
to update-credibility-ijl
$ y- Y5 Q: z! n- _, k) Z3 `' b0 j) T3 U" v$ n8 A8 u) z
;;
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。
: h7 D6 c$ F. j* T* {1 F( W/ flet l 0* K4 p1 n" ^+ v! a- T. y
while[ l < people ]
# a3 [# O8 I. f; W" E$ g  a;;
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
7 j) ?( Y; d& T6 N( G. P- X& p[
: @0 q* H) Y4 U. A/ M/ wlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
6 P9 M- e$ t+ H  }" B: Z8 E8 `$ Tif (trade-record-one-j-l-len > 3)
) f  h, l6 X% h; y( S[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( ?+ j; c. Z3 q7 O' D
let i 3& B) l: H! T, h, r8 M
let sum-time 0
/ b; Q- A5 y! Q, u3 m% u' Fwhile[i < trade-record-one-len]8 _# X) o( \; K2 }6 B
[- t! Q3 B. N5 c5 Q- j1 P: o9 O
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )7 w, ~; U: j* U% y
set i
$ v" N$ p2 @; G/ N6 N( i + 1)

; L" R5 A, ?& s" p3 u) |]
0 `1 }/ |( x8 x3 B, n' {9 {4 ^, u& klet credibility-i-j-l 0
3 s2 @2 H+ d0 v8 g, b" \% h;;i
评价(jjl的评价)
& {7 m) F* J7 {4 `  Y/ T* z# Y* E6 ^let j 37 ~7 U* m; ]1 b( A* P
let k 4/ l6 J! k! I- s+ t5 c( L
while[j < trade-record-one-len]
3 |) B& y& p# Z5 ?5 \[
2 J7 P7 t) g. f' lwhile [((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7 V+ z  `0 n. t  t0 Y+ x1 {* O, a
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)
: f4 V% |5 l$ ^0 S. M6 v0 K+ aset j& F- B$ ?) |: h+ T
( j + 1)

+ d* C+ v# E2 l: Y  O! s2 G$ t+ ?]
0 d/ Z2 ^. T' N1 Hset [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 ))4 K* o, F( p& O7 N3 r
" a" z# v  E% O% x1 ~; w3 K
' S" ?. v/ _) ]' O
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
$ H0 \7 }( _) ]! b+ `6 I% E;;
及时更新il的评价质量的评价
7 X, g5 K' U. `* W  w, u- hset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]# z, C' |* z( L/ s3 c1 ^! Q! ^& Q, a
set l (l + 1)
) g6 |8 T0 f; c3 A' @! s]
9 u# g1 B  P/ a( V# n; Z& nend) T2 \  W: j( A: Z7 S

- t5 \5 M9 o' ?2 e: q/ {$ C  [0 |+ A+ dto update-credibility-list- ~! v; ^1 u( q5 @
let i 0% x5 D! v) x. r
while[i < people]
# ^; Q6 G3 F$ c[) i/ m6 a& @) Y! g
let j 0
, Y$ n% Y* t- y4 M# [2 S' e  mlet note 0' D% l! r7 U5 }. y
let k 0+ l) k' z3 ]  w2 r4 t+ g! Q% h
;;
计作出过评价的邻居节点的数目
! V' ?6 p9 ]2 b; S$ ?4 vwhile[j < people]
, `8 e) `4 X9 D7 h( u+ Z; W[4 r9 D0 P+ y* Z/ a0 E1 p. r! @
if (item j( [credibility] of turtle (i + 1)) != -1)
( s+ G1 o8 s+ M& Q9 X5 ?( w$ E;;
判断是否给本turtle的评价质量做出过评价的节点
! z" {1 Q1 f1 q[set note (note + item j ([credibility]of turtle (i + 1)))
% E$ ~( J, P3 q8 q# Z;;*(exp (-(people - 2)))/(people - 2))]

& o0 E# V# T, ?5 eset k (k + 1)1 c+ ^7 D0 C( P$ Y
]2 I5 F: h$ D, d" l
set j (j + 1)& w" q1 y3 z  J$ o; x: V
]
. Z! B9 n: X' b7 Kset note (note *(exp (- (1 / k)))/ k)8 f9 x& J! [0 R6 a: ]7 S
set credibility-list (replace-item i credibility-list note)6 t% i6 K" W) u5 ]% y  ^( T
set i (i + 1)( Y. N% E7 W6 {3 a; a, M
]
! P& E/ L& I2 M- T  `4 V) Pend. B9 b2 N6 P; j1 m0 M

3 Q8 [: N4 e4 W& A1 ?to update-global-reputation-list
+ J0 D; ~: {; Y7 S! w  }let j 0
" }, ], H) w# h9 I0 B; U6 owhile[j < people]7 W3 r: s; o- d
[# G5 q+ B& B$ B7 j7 C1 N% \
let new 0, Q- w' R  N0 [
;;
暂存新的一个全局声誉$ U1 W+ x) U" w" V) n- ?
let i 0
0 S+ p7 l  x3 a, U1 r0 s2 jlet sum-money 05 f. x5 I# L% h' t4 O, a( D, l* d
let credibility-money 00 e- I8 `; O. \) a8 M
while [i < people]9 h4 _* c9 t" V6 G
[$ [# w5 _. p- @( O$ n4 Q, Q% Y7 q1 S
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
* [4 I- l. e# gset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))2 K( k# L% ?; P
set i (i + 1)& z; @; s5 M. V% a, n
]: Q1 {" Q5 N/ w- t
let k 01 [6 K% m1 T& b
let new1 0
4 {! h8 ^% B' h' B0 R$ P. K1 U7 ~# hwhile [k < people]" Y9 y8 ^8 }; Q( N( h/ c6 M. d6 j8 o
[
; y& U% s: M7 B! w, |6 iset 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)) s% D3 E+ m. Y/ ~
set k (k + 1)
! C: o9 f3 x" @3 Z5 H4 r5 ~0 B]) N* l( I9 j3 t6 b5 W" a
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ) B, y' ?" j/ i
set global-reputation-list (replace-item j global-reputation-list new)1 W- a& z+ p$ R% F% A/ N6 _
set j (j + 1): G# g. [( f& Y7 [) k) i6 z
]
5 b- h4 Z: Z9 q2 c2 aend
6 \+ W2 {0 ]2 c2 R( s6 \; }' t) V, {
; e# t8 v' N3 c+ W5 |+ z) B( S' ~; z  ^1 n; Z3 a$ t2 x
1 K. s' K2 M5 M3 w1 {0 w1 ~$ W8 F( U: V, n
to get-color
. `9 j7 M0 x5 h  q1 }. N  R) l. R7 {: u. R$ T' X
set color blue

/ w) e. k) U! d, J6 `end% D8 J* a- }* r1 P" {
* Q6 U( O/ U$ |" m
to poll-class
# g5 ?& y0 D$ {" e  W1 _- [0 Rend
. @7 M- n3 P- _+ r: _. ~& x4 k% s, l0 H( }/ U" x! u
to setup-plot1
. }/ v; k: ]. Q. ^  P* _& `0 X
3 g( n4 z3 J9 |set-current-plot "Trends-of-Local-reputation"

& g) O5 ^  S( V% ]
" R! ~1 c) n; f& g8 Lset-plot-x-range 0 xmax
% d7 Z+ P/ E7 t+ _1 `2 M) O! \) p6 j
+ y9 [+ Q2 K" r4 p7 Q4 y
set-plot-y-range 0.0 ymax

1 R7 C, n4 J: mend
3 {! b- z$ K- c: ]  a2 X+ l5 y+ w' P. Z0 C; t
to setup-plot2/ @$ F% N1 ^# g
% Q! z% P! {5 L7 E% Y. b
set-current-plot "Trends-of-global-reputation"

3 W* e- B$ ?5 B; D4 T0 B( c; L, s3 y% X8 x
set-plot-x-range 0 xmax

" x8 B: z. m0 l+ x' B6 A% J0 |/ z' ]3 C% \
set-plot-y-range 0.0 ymax

. _# I/ ]& T" W- A6 X* uend
; u$ ?: v- Y/ m1 d7 A/ G5 \, l* q- |
to setup-plot3/ q! ?- K2 X# {3 x
" a6 z, f; y/ v
set-current-plot "Trends-of-credibility"
2 W5 O! o+ g8 o9 X2 L1 h4 n/ p
; u; y5 c3 m) [7 w& J9 \
set-plot-x-range 0 xmax
& i! g; M8 h4 X, l
$ X) _0 [1 q/ j: O5 A5 ?3 r
set-plot-y-range 0.0 ymax

7 ^) c& t& n4 u* s4 R5 K6 C( bend9 r7 z' k! m( w7 Y" j& I. n

+ d/ S, K- t. ~; |" W" j7 z; Yto do-plots6 D# O0 e& f, y4 h
set-current-plot "Trends-of-Local-reputation") u# e* G" M8 t2 w+ w
set-current-plot-pen "Honest service"
# R3 t' Y2 s( s# Z9 I; |+ b( Eend
. j, R% A: q+ G0 v* \' f" b& V
- K7 w& m$ |& m2 x& V0 Z: B[ 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.
/ M5 r' \' r, X: v1 I  u  Y/ v: u8 |) Q$ Y1 [* @
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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