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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 J! s, ~( {* [, I7 `to do-business 6 \" |( Y, m! {. R: A( _* a
rt random 360$ j) E' J+ e0 m* Z2 J
fd 1
$ |+ s  f- B+ l% L4 V* [( j3 u ifelse(other turtles-here != nobody)[) x( V/ g! U, v
   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.
+ \# {( k1 Q' U, j: Z   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
9 r2 K. q+ r# J4 `1 I& Q$ o  P: Z   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer$ j, s# t' g4 \- `7 {
   set [trade-record-one-len] of self length [trade-record-one] of self/ M' O- L' V4 ?1 r4 \
   set trade-record-current( list (timer) (random money-upper-limit))" b! E/ Y5 H2 F* _. a) E# b
2 _  }5 ]* N; o. c6 M! O7 s7 ]( D
问题的提示如下:
- Y. X4 ]) K2 K3 J1 k
# ?6 o9 }- P- B; e- ]$ @! ]error while turtle 50 running OF in procedure DO-BUSINESS) t5 ~7 x$ X' z) X, W0 C( _
  called by procedure GO
% A; X; p; a8 l: b; Z, R# cOF expected input to be a turtle agentset or turtle but got NOBODY instead.
# Q/ M6 \# z1 c7 E
(halted running of go)8 q" o& B5 _2 Q1 I
8 J4 ^) O# }; R
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~~" M8 y5 K* \% X* s
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
2 J) K$ f8 {* Y5 e9 Wglobals[7 H+ R+ \. C) y% P
xmax
5 a; I0 T$ z* s" i$ r/ @+ xymax/ `7 \* P$ e) C9 j0 k8 J. \8 c
global-reputation-list
/ M! g9 W5 n' v# o% Y' {
8 S- q! k3 X) i' ?4 L9 y, A;;
每一个turtle的全局声誉都存在此LIST
- A) u! N3 k% \0 [9 H: G7 E0 |$ H$ icredibility-list+ Z$ W- j& a' C
;;
每一个turtle的评价可信度: l9 L; \8 h6 a3 B8 P2 @
honest-service9 f  n. G- j" Z
unhonest-service% e" o( ?8 o" H& x. E
oscillation
5 ?* x3 W0 j+ crand-dynamic( R3 I" H/ v8 _8 j
]
+ B" |$ K) V, F- Q
! {$ I1 A+ a  b6 u5 f3 b2 x: Qturtles-own[
/ T( {! Q; ^5 f- ~9 m4 ptrade-record-all( j) ~0 D/ G2 [% `
;;a list of lists,
trade-record-one组成
! c3 W+ t' Z7 j/ W" h7 t/ b' Qtrade-record-one$ m  @1 z" q0 |. t6 T/ i; A8 |
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
1 e1 Y1 @0 i( L, @1 T7 _2 w$ ^$ @! Z: k3 {' X0 o8 v; c
;;[
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]]
0 W" @% k6 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]3 b5 v* R9 y* h' X
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
7 l% h2 T* q( E# Aneighbor-total) K3 |& e% l8 L+ m9 s$ e
;;
记录该turtle的邻居节点的数目* y& t5 p/ Z$ ]7 m! h* E' R) l0 ]
trade-time
7 s, l6 S' [4 C;;
当前发生交易的turtle的交易时间
& o/ d! v5 c! f; h  n- r* ?appraise-give
, T# z! j8 D" v- z( K;;
当前发生交易时给出的评价# a* I3 C3 a7 ^- s. D: n0 Z
appraise-receive! X: w8 ?# R1 C' u+ {9 d* M
;;
当前发生交易时收到的评价$ G0 W! W4 c( ^! |9 f
appraise-time) V. d" i- y1 W7 E3 ?# F. L5 C( p1 k
;;
当前发生交易时的评价时间
5 A6 E  X. \$ g; w+ llocal-reputation-now;;此次交易后相对于对方turtle的局部声誉, X' t1 T+ v- S9 d: C
trade-times-total
$ o9 p0 S1 p6 K4 T3 D;;
与当前turtle的交易总次数
# \5 b7 {% ~" d# utrade-money-total
( L7 Q0 o- m. G# X;;
与当前turtle的交易总金额4 b* e) |* ]& A* f4 n
local-reputation
; z2 y! Q: n. k4 o2 D! ?global-reputation
9 ^  {- q6 J/ N- Q+ d% F1 ucredibility0 U( c3 z1 l: n1 m
;;
评价可信度,每次交易后都需要更新
- w$ I. m% P3 c1 W& l  W2 Y* y' Lcredibility-all' T' m6 j; [5 Q, e
;;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
$ a1 C1 u5 j6 Q5 Y5 @
: E9 \0 ~" f% S" p+ F( @;;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
0 D' Y1 ^5 v) H: Vcredibility-one
* K+ b4 G! v9 p' a4 C;;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
  l$ ?# Y9 R# ]3 [global-proportion/ Z: G) y+ {4 t2 W: A
customer
% y0 P% V: |9 Q9 O# Pcustomer-no. y1 W3 O, X* R9 r  s+ P8 n
trust-ok
* e1 a* D& Y$ x8 D) c8 ]trade-record-one-len;;trade-record-one的长度
7 y$ C" t# r. ^8 A" ]6 []+ Z% N2 _$ ]5 ~' H4 t8 o

9 P$ g: E" a+ E: q7 H8 R; A;;setup procedure- `; p* T+ I+ q$ o* |7 U

# @* P3 ]- D* M# o- u) l% s2 [* p2 ^to setup4 `8 S% Z- t  U0 L) b( `0 @0 n
  Q  H  ^5 f  U1 E. T4 o
ca

0 ]0 A- q# J% `4 k
7 B4 B9 E( n4 `0 n: c" ninitialize-settings

0 F+ ?# P* d8 L2 j1 R) g( C( u* S
0 Q5 r7 Q2 B' n* J# Tcrt people [setup-turtles]

/ K* a- p' g; g# n' N2 ~: b: s- G, L6 }" z
reset-timer

0 P0 Q! o4 c% G( t6 h8 q. }% ]2 B; A$ E8 f5 w) u% `! B3 @
poll-class

0 s0 U9 w3 t. w( T* i
0 a+ n( f6 g! {setup-plots
- n1 ]  G; Q1 C# n9 A  H) A' U

5 n6 P( g: F) o$ M% Y* @do-plots
- P, ^5 r; |  D5 ~5 ^% P7 E
end" C' u) D! B. R) g+ }' g9 s

- p2 t& e6 j  b3 Tto initialize-settings
; M9 h) n- n0 w
, X) e! G, X& _set global-reputation-list []

# w# w7 R, b3 `3 Q! ~! V  J" d1 ]9 q/ d: g- D! h9 q$ s# J
set credibility-list n-values people [0.5]
- j4 ~7 k) I4 a9 g; D* B4 ?% [9 u

5 \0 X  J* D/ aset honest-service 0
; @9 ]# W) \; e/ U7 @2 m: y+ P7 _! P
) j( [5 w9 `2 ?: q  l
set unhonest-service 0

% v4 h7 J. O7 d) U
3 s* s; P% Y  S( y8 f, Y9 ]5 Jset oscillation 0
6 P5 f. `6 F: R8 w% {
9 j# `9 |4 L& o
set rand-dynamic 0

( ]' _& G1 s& [1 u; |- Send9 _8 s+ I) P$ w) P2 q
6 ~7 e+ e2 }1 K1 Z/ S4 T
to setup-turtles 9 U% U! n0 t6 o: y
set shape "person"
+ f+ }: O* j  p, M. x$ |setxy random-xcor random-ycor9 D4 p. p# ]; \4 K- g  k6 O/ N" i
set trade-record-one []
5 [% n2 D4 x# D# F2 ~: B/ ]6 Q2 ?
  M! D" U+ F+ D8 I
set trade-record-all n-values people [(list (? + 1) 0 0)]
8 s' W3 G$ V  M- K
0 l, |+ x2 j/ E2 P5 E' i
set trade-record-current []
/ T$ |% D7 U" s( S& jset credibility-receive []; b7 x1 ^# `4 I# |! b$ Z8 C) w" q6 ~* R
set local-reputation 0.5
7 o1 p) y2 R* h0 Y) o! m1 Fset neighbor-total 0
  J5 \2 f% T2 c4 @+ nset trade-times-total 06 e- A3 t/ Y" m- x5 t' J# p. C6 \
set trade-money-total 0; i6 V1 c* o7 Q/ u8 i
set customer nobody: h( S3 q1 `! l$ ]8 z3 \
set credibility-all n-values people [creat-credibility]4 S, G# @! D7 v9 }. h7 c4 K
set credibility n-values people [-1]
( m& x# V, J: v. Q8 \get-color/ N: L' E5 E) v) S% x8 H5 r' v
) O8 \& n6 d; a1 Q0 Y
end1 ]* u8 D8 P5 C9 f- U

' I. j, z4 U+ Y7 X! Sto-report creat-credibility
" a  n. p- y5 I7 H7 ]' ~report n-values people [0.5]
5 m; t* M  B' L3 t2 yend# O% Q' Q( R. j4 v
* ~0 y( t  F, g) T4 w
to setup-plots- Z. s% L6 F! P: Y# s& E
7 j# r& d! k' u
set xmax 30

2 R  G7 |# w* h$ |5 K3 v( \6 p& d! v! K. {
set ymax 1.0
2 ^& B/ U, C: l1 c

9 L0 v" Z5 @' k3 ~+ L& ^9 wclear-all-plots
) z& I" x, L" x

( A  {% S" n' n# P, vsetup-plot1
$ d. ], f% g  m2 Z

# d8 m4 h, @* N4 n/ A" ?setup-plot2
1 N9 j/ i6 T8 B9 H% N, w

/ K. L( i9 x2 ysetup-plot3
+ I( e. g% V& o& u$ I6 }
end
' Z2 G6 U+ z, g; |" e- G( p
5 a) U! j+ @  v# G;;run time procedures+ G/ `6 \0 C" ]2 d$ L% }1 @% g  q) ]

5 q5 `! E8 y6 H4 H$ E* d! }8 u1 Cto go! x, D! Z9 d5 }6 a

5 t9 Q2 \$ W5 O4 n' a1 J( bask turtles [do-business]

% C1 s  D& v( k3 ]- rend* h; q4 D! E/ o" S2 X

5 d+ a. k7 `( X) s+ t# _to do-business # V! p! P* I8 C5 H" d' \+ n
# D0 ?& H0 J4 F8 ?) J; j

9 P' E" x5 P9 v% K, e# B$ w/ h7 grt random 360

" V6 m' H. ]$ c: L* u8 r$ ]4 E
9 p" V/ u/ F+ G, q, P' \+ x) ]/ o( Ofd 1

! m( s4 ], Y8 P2 I3 b5 V. s. S6 Z* Q# r* d3 S
ifelse(other turtles-here != nobody)[

6 D/ N0 H4 W6 i; r
; V8 A! O) t3 ^# gset customer one-of other turtles-here
2 {. X. k3 M2 {- U
0 e0 Q' h/ [  ]' b7 E
;; set [customer] of customer myself

- I% P% L/ K# T1 X4 o# @6 ^0 }
: y$ f! ^3 b3 N. h/ ]% Cset [trade-record-one] of self item (([who] of customer) - 1)
5 P+ j, s) w7 b' [! z% L[trade-record-all]of self6 b8 r; p/ P* I5 b) R! R' N
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
1 O' e; `' D; H9 Z/ q0 \

" X+ W1 |: x2 D5 d+ Xset [trade-record-one] of customer item (([who] of self) - 1)+ Y7 p% Z" I) x+ b7 V, y- w- i
[trade-record-all]of customer
' b, s9 q$ m/ L* }+ K0 c1 c$ e

. x* ~- Z* ?1 W* Lset [trade-record-one-len] of self length [trade-record-one] of self

* x) F) x/ S7 {* L, g: l, l. `) m* U( O& J) ^
set trade-record-current( list (timer) (random money-upper-limit))
+ H! N$ E/ O8 O' p0 h$ Z
) G: i5 T' B) z, S
ask self [do-trust], F0 |$ G6 P; |
;;
先求ij的信任度
( z6 m: s* _" m# l! f1 M# |4 v% |% @
if ([trust-ok] of self)1 d* G$ h7 ?5 u, u5 L
;;
根据ij的信任度来决定是否与j进行交易[
- ^3 m$ S# m! D+ o' i4 z; {2 Fask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
) o9 E% L+ d$ I
8 [/ D9 U+ ~$ c* n* {[

, P0 p* R2 m  u2 j1 M/ d$ t& a# z+ g' j8 [5 c
do-trade

: G6 `( r9 p! s
7 K. O  t5 b. t; z4 wupdate-credibility-ijl

  G9 K4 G( m5 W% B# g8 [# Y3 Q# ~& N" \5 o" n0 F
update-credibility-list
; R) D" v4 T7 {' K- c
& {9 w5 M0 a" y" Q# w5 y( _

, w) N# Z4 K2 z. w( Y: Jupdate-global-reputation-list

2 [. L9 t% ~  G2 o- F: Q. r" \) `" D" B' d
poll-class
+ h- q$ A, }& F

/ r( u6 P% \$ Q7 B1 `, Lget-color

( s9 B; W, R6 N5 \2 Y: e3 @  x4 h& d; E" P
]]: F3 T0 D2 {% A/ g* `7 e
  X0 N; g; T6 B* b4 H3 T3 P
;;
如果所得的信任度满足条件,则进行交易
9 s' W9 J8 K; x6 b. B: ?: g: [2 R6 C4 y3 V; f$ }
[

9 C8 l# ?, T! p: I9 N  [1 W+ o7 P" g5 {% q3 F: s
rt random 360

1 y( T) _6 T2 A; L) u/ G  a& e  K8 V! V4 s
fd 1
# c! N2 R# S9 B0 u$ p

: j. G  w% J5 u- o3 _1 n8 s]
- _7 L" Z  s0 D4 c) X- M  G

  R! t  i; A+ [5 l+ nend

3 C) \* t- s0 q  o$ Z8 {4 ^+ a4 o' j! n. r* b
to do-trust ! e+ F7 p* S$ _6 Y2 M
set trust-ok False
* \$ b3 `+ }5 _  ]- G% s* p
! y1 ~2 o; S# z7 U
9 ^( y2 b1 h4 _1 \
let max-trade-times 0, U6 e3 y* o- V+ z; ]
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]" g1 @8 x5 O# k, B6 C8 g; L
let max-trade-money 0
; [+ L  L: u) b4 \foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]2 G7 q$ v# O) t& u8 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))
! v2 N4 y  V/ \- _
3 k4 s3 b! R* Q) D. ]

" b& U1 N4 H% C  ?, B" cget-global-proportion
) E6 N; C0 B  x6 y" `# N! k- Y8 @let trust-value
3 ^5 r7 ]1 e# n- ilocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
5 Q2 m8 q' k, L0 x
if(trust-value > trade-trust-value)# x0 U7 ^, a6 V
[set trust-ok true]( \. _6 h! F# s: j/ p# e
end
4 e5 E1 C& Y, }3 c) B8 @
5 d/ C+ F% {/ `' ~to get-global-proportion
9 _3 B5 ^% {7 D8 `2 d7 ^ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
" t& O) J5 ]# ?- Y- C: p[set global-proportion 0]
3 _; c0 l  S  v+ {9 F5 K- |[let i 03 y) l9 j1 e5 ^7 y" V
let sum-money 0
. _+ U5 m+ a" M" e4 W7 l- h3 C1 iwhile[ i < people]
6 z! U. B; {6 s; o[
; d3 L: w* Y) ~" t: uif( length (item i! L2 W. S8 B$ S
[trade-record-all] of customer) > 3 )

) ~$ I' a$ O- `7 _( G8 ^7 h- y[( C6 q8 x+ g! k( k% I$ E
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))/ o' g; z" j; f2 i5 F) [
], T0 y6 X+ U3 o2 v) M, g8 P
]6 n1 `( F( S8 D1 [1 W
let j 0
# z1 A& E2 L! [" i! p' k- I5 Flet note 03 g$ Z) C& H, L6 l, R
while[ j < people]5 H$ a& n$ Y6 j: N+ Y
[
- |. {( L3 I7 i2 b& E/ }if( length (item i
& ^7 L: `3 Z9 X' A( _9 k[trade-record-all] of customer) > 3 )
* ?0 C4 J& U( E( Z
[7 s; B6 S: t9 M% t
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
- U- h8 a0 V0 d- ~3 O% r$ i: V[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]& Z0 j5 H) O' I! o" u9 t
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]" Z# s& R( H' f3 S' U8 B
]/ W/ M6 N$ ~- b: G
]
4 o  I7 k6 t% ^4 tset global-proportion note
8 J- F6 b, F  U], `2 q: M( G8 v
end
/ ^3 g3 @5 d, M  R$ O% b3 @$ M0 A5 _' A! u# `2 K  h% k
to do-trade
" b, I+ l# c' [;;
这个过程实际上是给双方作出评价的过程& I8 s3 o; ?7 S- L3 w9 E( r
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价" S+ m; t/ E; P1 [& m
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价" m7 s; i2 k  u+ w% v
set trade-record-current lput(timer) trade-record-current
- M$ [1 Q, \' k2 I) r; W;;
评价时间
' b6 N- M" r/ i2 [ask myself [
! H2 y0 z3 f" @1 S0 X  Wupdate-local-reputation
! x3 Y, G0 F/ [3 k# hset trade-record-current lput([local-reputation] of myself) trade-record-current
1 `" x9 ?# d6 I+ ?1 ?; t]0 G' x- m* b7 O) i0 d
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
! Z  l9 N$ J; K7 h;;
将此次交易的记录加入到trade-record-one
; x5 O; R/ k# m2 v* u( J8 `set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself); ]4 _. o$ G& \8 L: P+ t
let note (item 2 trade-record-current )9 m% f! ]2 @- m: p$ @
set trade-record-current& r. @: {' r$ }6 n/ C
(replace-item 2 trade-record-current (item 3 trade-record-current))

% o5 E! r5 u8 e) p4 m- q+ P( N( ^set trade-record-current1 {2 {9 j3 f, `
(replace-item 3 trade-record-current note)' l( m+ G% g5 K6 G8 g5 A
/ @7 s7 k/ m/ s* \( _+ c- P

/ k" ?* q, y! Rask customer [
8 k, H( g$ }3 wupdate-local-reputation
; c7 u$ W! z2 _) R" @8 D4 j0 Gset trade-record-current
1 R7 d; j& p) C* H2 u" N0 _, E(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

) s  U5 H5 V% x( Q]7 B; H" J  u: \+ o2 ]' }# r0 `
% c& v& t) k* m7 c, S
0 b9 d" t; D# G& b$ ?! z
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer+ {/ d' ?+ }4 p: q; G: H. h, L5 E1 d

$ X% W2 q4 {2 J/ C$ gset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))! q8 S$ l, S9 w& g
;;
将此次交易的记录加入到customertrade-record-all3 \7 w7 [# T2 [; }
end0 {6 `) t" K) P1 p3 B

  j% h& G; b: A- [to update-local-reputation
! h" n# I' u" j" H8 qset [trade-record-one-len] of myself length [trade-record-one] of myself
, M  A2 l7 ^! g0 }0 Y
3 `! h; r2 w# N7 L4 \8 ]+ w0 e7 t3 i  o2 v% v
;;if [trade-record-one-len] of myself > 3

2 g0 b1 L; [3 r+ f, T$ d! k7 N# ~update-neighbor-total
9 W: N6 t3 W2 K% C;;
更新邻居节点的数目,在此进行. R0 s' X' i. I2 g% l3 I4 m
let i 3
" ]8 h: y0 |! Q  z8 i- n/ klet sum-time 08 \+ ]3 y4 g- l4 i* t+ L
while[i < [trade-record-one-len] of myself]: E; r9 }: O5 V2 D" j
[
1 d1 m; k* b# L6 Oset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) ). ^- K7 [! b1 E6 Y; |  |' s* I
set i8 i' k9 P& c( M/ O+ n" ~" p! v
( i + 1)
7 g) `9 C/ B$ {( U+ F/ L  l9 B. [  O
]
  i' O  {+ i. z* [" _6 Rlet j 3+ R. q' w3 z# l  F. t2 S1 M
let sum-money 0. A9 ], q! d# y- D; N
while[j < [trade-record-one-len] of myself]
4 t+ ?, ^, {5 m8 m6 R1 Z: L4 v5 z6 I0 |[
! U$ m# L& j. R& C# C3 yset 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, X, D$ i" ]* l" lset j
2 z4 V5 D& Z% V4 a* o% D( j + 1)

& c3 v; w9 X& l]( v) e! T0 P) e. i$ W
let k 3
+ d' K) W3 e8 b" e: klet power 0, K# Y! U" y. q- m
let local 05 g$ q9 b" q% G' v, @! J
while [k <[trade-record-one-len] of myself]. b4 N8 s- w' R5 z6 T
[' U6 I: V1 e. p4 Q; l
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)
7 z" `2 m! C( B% M2 o8 hset k (k + 1)4 v5 Q. Q: H( K( t
]" V3 o( m8 p1 h, d9 A. M
set [local-reputation] of myself (local); S$ B$ g: H& n
end
: j% C& S3 g8 V+ R5 Y
# v5 N% i' E3 R3 uto update-neighbor-total
) N/ o/ V+ {' {) L1 A, L! @2 }7 b. Y5 c3 g. \3 t3 L& h; L
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
& Z  e- L. A7 ]8 I4 \# T( y
# d3 q. M! |; S1 h, r7 m+ X  |

, T- H5 k3 H' x6 g+ @end
4 s3 i4 g+ p9 w( a! M, T; v" ~) [& N' W) L/ F2 Q
to update-credibility-ijl 2 {- k. V" M4 l8 C  ^0 N, }& H

- k: X; y# e0 Q7 j& l: u;;
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。
8 a$ Y& K0 v% y# m8 w: _) Ylet l 0
8 e! i% ~- K5 ]while[ l < people ]
& {9 w* v/ e  q5 s0 n' _;;
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8 u1 Z, ?+ ^$ v4 @
[" p/ ^5 g+ e2 S% s% ^% a% T
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)) S4 A) k* Z3 j7 t$ Q; Q, @1 y
if (trade-record-one-j-l-len > 3)
* l0 l% W  e7 C/ j, b  q[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) k$ U3 e# }( K9 A$ v8 a: }
let i 3/ C9 s: c: U" A
let sum-time 0
5 f* V  r" C5 F, p, \$ k3 gwhile[i < trade-record-one-len]
6 \7 t: y4 x. l! f[9 H' R9 V1 h( f
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )4 V. G4 x* q3 u9 o- J" l. e
set i* A, f8 Z+ w2 l
( i + 1)
4 T' d5 W9 ?* A8 |6 _) e
]
7 I. F3 q3 Y8 Plet credibility-i-j-l 0( J( U* T' R# B! ^$ ]  F
;;i
评价(jjl的评价)
# i* T: h" x/ @4 Plet j 3
) \2 \; W- c% L1 ~  }) F/ Xlet k 4! `; [5 L% v# d/ R
while[j < trade-record-one-len]' p+ e8 C5 \1 b3 s4 @: l
[  ]& {: p" V+ g! x3 O) ]1 {: a3 O0 l
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' K! k3 Q3 \9 D4 @
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)
& J( ?+ J  A& v( k) Yset j
: y" n' X" }1 C- ^# l& z( j + 1)
" w: z3 z- Y5 H2 Q5 |/ v: R  ?4 ?8 Q
]0 r( I7 ]6 ~9 W: [7 d0 W9 n
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 ))
% s1 ~7 H8 _) E, I" h( A: a1 H# W, t8 P5 K2 D

  z" x3 T' k6 q" s' d6 [' Klet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
9 W' O8 j- Y; V3 J' D3 \;;
及时更新il的评价质量的评价
' i) V/ v4 ~1 pset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]% f& R; F* s* S
set l (l + 1)
' i0 c) V9 d, U: j0 c. u5 k8 A1 g]
: }* L, b- p9 |9 Gend* r, {. O- r( v" R% B/ _) k
( C, A. P* o- S7 A+ E+ o7 S5 y8 P5 a& ^& z
to update-credibility-list; I- k( H% J5 ~( ~: t
let i 06 ?: r0 z3 I, |$ p) e" ~5 f7 A
while[i < people]
' U3 p; X7 V: F2 V[
% F& W/ m% p  c. ]$ [: C$ b; `let j 0* N" o7 r$ {& ?0 g! E6 y  p
let note 0
+ I) L$ c% f% jlet k 02 W( \8 M8 z: O4 X6 ]0 ?
;;
计作出过评价的邻居节点的数目, F9 G- d, \0 B$ y- c
while[j < people]. v) P9 ~5 a/ t
[/ g  q. n! f: t. n3 e
if (item j( [credibility] of turtle (i + 1)) != -1)
3 \7 X. T6 j1 ~5 O' v9 j7 Y;;
判断是否给本turtle的评价质量做出过评价的节点# ^5 {$ c6 C& t2 ^; L4 d! ~% c8 O* P
[set note (note + item j ([credibility]of turtle (i + 1)))
6 v4 i7 o, o5 w' t- j* ^- f. ?;;*(exp (-(people - 2)))/(people - 2))]
0 W/ j1 a0 J8 T4 |. z
set k (k + 1)
( J) S6 P; `  |) h1 G]8 o* P( F7 L) M( i$ T
set j (j + 1)
  y9 y7 B5 ^3 N9 G2 ~: e, ~]$ V9 \* R8 O8 G- J) V/ a
set note (note *(exp (- (1 / k)))/ k)# r( Y* T) \! V$ h& n
set credibility-list (replace-item i credibility-list note)
2 F3 \( I/ j/ p6 T" v) o% P$ g! ^) gset i (i + 1)
; F8 q5 Q* K3 y* x+ [# e]& k$ H/ R+ L# q4 ]/ B
end
, S* }* k5 ~( G# `' s7 R
+ r, }8 }8 ]# e8 O4 W& O$ ]to update-global-reputation-list8 P/ G5 @, {6 l6 g8 j3 O( ^  u
let j 0; [5 h/ w9 ]) ~7 c+ G
while[j < people]
: j0 J/ Z# G8 R[5 g& Q4 X+ `# _
let new 02 D, j' D! w8 f- u: D7 g1 K
;;
暂存新的一个全局声誉) G7 r1 B6 ~0 ?/ {
let i 0
+ n  p" x. k2 X, m4 glet sum-money 0' Z2 V2 ^# K  z
let credibility-money 0  k0 A  F5 h7 ]' I+ g+ O
while [i < people]
& C/ @7 L$ {- J; n5 @2 p7 k! a/ N$ a[. f# }6 d' x* D
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))1 _# M- [, R. G
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
& N/ x. T- `  T$ h  g' Xset i (i + 1)
% t+ N7 Z) |# G]7 D2 t1 }+ q+ B* y4 Y2 g) \7 k
let k 0
0 C( n, H3 {' xlet new1 00 q" n% k4 \( p, a
while [k < people]
! y" f9 M! c5 c[
) m6 _5 H' P" \* q! p, 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)
' o0 `$ _2 i, {& aset k (k + 1)& D' x' F6 c6 m2 j* \2 G1 W
]
! c0 H& q( B( w- U9 R# S3 Vset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
  R* W  Z& I9 i4 mset global-reputation-list (replace-item j global-reputation-list new)
+ s" ?' X7 `: Y2 o" i; Z6 ~6 i$ wset j (j + 1)
: ~, Q1 w2 {. T; [. g7 F  ~+ A8 {3 Z+ ]]
% Q! J! ^; T3 b" Uend  P( ^" {1 r/ l. x* M  N7 K

  ]* }0 m5 B' K( a
0 f2 D, d/ C4 D- d- Z6 H4 ]/ `
  q2 G8 l# F! O4 }: D5 E: i8 \to get-color
* z0 X* W5 u+ f  n/ Q. E5 |
- V& G& u% b8 x* G. X) |set color blue

3 e+ D4 V9 J! l: c" s, k3 Qend6 q$ r# S! X: ?& v  A1 b
3 V7 u% ~0 W4 K+ R# q2 Q2 M
to poll-class
% N( E% M. Y' B7 N4 j% Mend
+ v9 i7 [1 J4 l" z% Q& t
% r1 A1 F* k7 e8 Sto setup-plot1% @) q$ f8 \0 Q( |$ y
3 X" y. W- ~* e$ z
set-current-plot "Trends-of-Local-reputation"

- |" ?+ v# f) E' n2 G+ |
3 l; I2 K' q% M* E5 Tset-plot-x-range 0 xmax

! G1 H$ w( Q9 V$ A( Y5 }' q5 O% q& y% q- K$ L2 T; \
set-plot-y-range 0.0 ymax

3 v0 ^0 N$ w( F8 @( {# {# l& Lend
, ?! ~( t$ o1 p- Q( f0 }
. y. W5 H! \# q" b0 F6 J) _* c, uto setup-plot2
( P' G& b6 Y5 o; x' U2 a  K) d( h" g- V- C
set-current-plot "Trends-of-global-reputation"

# Z: i/ j+ x7 U" V+ H3 S9 G8 C, ]4 N( ]
set-plot-x-range 0 xmax
4 W0 D4 {" a6 v$ V

2 }& I0 w5 g/ V% gset-plot-y-range 0.0 ymax
: f: W. E  y- B8 h# b9 W
end
8 ^. M$ r$ b4 J/ e& T: Y* U+ |) `
to setup-plot3
7 C6 [% n! ^: ~8 B( i5 e
; f) m' `6 H, x, Y! Cset-current-plot "Trends-of-credibility"

* q9 L6 ~2 d6 T5 X' f% |5 {* L5 ~8 |+ f% }4 M2 h) L" f
set-plot-x-range 0 xmax

8 B& A! }( b# ~7 l7 w# M
8 O( {2 T" ]5 B( P" tset-plot-y-range 0.0 ymax

4 c$ ?: `+ q7 h! x; ^: d! O' oend
, A) \1 D6 x' [3 \% Y3 M" v" ~; w# X- j% |* o
to do-plots5 O9 g; `4 _* K7 }6 O* [
set-current-plot "Trends-of-Local-reputation"0 x( z, a% Y  m8 K- t
set-current-plot-pen "Honest service"
3 {& f( e6 Q* F7 A, x7 Y" bend* P, G: w. k5 ?: g
# e4 W$ _% `. ]  g2 s4 Q0 Z  X7 e+ 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.4 T- L& k% @  I' H) U

! F2 Y. x3 U& f) v5 H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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