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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:
1 o( ~2 c9 U( R) j0 s- |0 b/ D$ U2 xto do-business / u! E3 D( Y/ H- ?# \8 ~7 `' k9 s
rt random 360
: E# J* y" L" N6 ] fd 14 I2 p1 A% S6 i, F4 w4 }
ifelse(other turtles-here != nobody)[* p+ R0 u( j% _) l4 G0 t# j1 _
   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.
9 w- K% ^9 ]8 h6 C. R, C" [6 a3 d   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
3 G% X& T8 W0 m7 _: c$ z- T   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer  Z0 h- t( S: D, ?
   set [trade-record-one-len] of self length [trade-record-one] of self
: F9 ^8 A! X2 s7 l) Q6 m   set trade-record-current( list (timer) (random money-upper-limit))
% `" U2 _% M) t7 d* K
1 b( }' n- i  I6 L* u' M问题的提示如下:
2 l! ^. u. a) M' X
) K1 V) t% ]3 |* N& werror while turtle 50 running OF in procedure DO-BUSINESS
" f9 ~: d+ |! l# O% w% I  called by procedure GO" V- x2 _" O* V% \
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
+ X8 f- S' \4 h. r
(halted running of go)) q8 x/ t5 e; \+ s- ]! b  F3 g

4 i5 {" m, {; V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 m# k/ c/ m3 |$ z) i! {7 U1 l  y
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  m- P( }; A1 C7 i. g& @
globals[
0 u% E- w, u- S1 R7 jxmax, w; z6 O: ~3 J  ~" d" E
ymax
% a" |) n7 N/ V' i: E" Q9 Tglobal-reputation-list
9 q4 M* B0 }+ ?! }' n3 L* {& J! ~* q0 T& j
;;
每一个turtle的全局声誉都存在此LIST2 c# D; f3 a" ^: k
credibility-list
2 A% y# Z3 f8 S9 |;;
每一个turtle的评价可信度
9 X. r* C  X3 k9 Z6 E+ \3 dhonest-service
1 k0 `; j: q" R7 Q- A: B0 E9 aunhonest-service. h, r3 Z& l' O0 t2 X5 l
oscillation
% q3 U9 K. ^0 f) B1 C  urand-dynamic
+ w1 x# M9 Q" Z' T]& b1 H# L& f8 Y' @  ~/ x
+ Q, {: \+ Q) D! ]  [. Y: D3 g/ S3 P
turtles-own[5 x, L) D7 `: k8 J) d2 o
trade-record-all) h. q5 ?8 ?2 ?7 H6 o& R# Y
;;a list of lists,
trade-record-one组成  D8 ~0 N' d! _, k% K  V6 M) L
trade-record-one+ z; I8 e6 H" O1 \8 I, `1 v
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
0 @7 [! J" O2 j$ s4 o8 I+ d# [1 m4 c4 V
;;[
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]]) ?, _2 k  |) W1 @( w
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]& o$ h( U+ E! r. k1 L& t8 W! Y
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# K" N. {% t& y7 F: u% C7 {
neighbor-total
# I1 M3 p/ ]8 P# T- M% T;;
记录该turtle的邻居节点的数目8 x' J% N! ]! |- v  K- h- y, I
trade-time- ?& Q! ?. H3 G& y
;;
当前发生交易的turtle的交易时间
$ _+ l+ Q9 B2 D' t% m9 ~appraise-give9 D1 j; j# ?* q
;;
当前发生交易时给出的评价  R, G; g# ^( A1 X
appraise-receive" k: D) l$ U- Y# _/ N: Y( q6 G
;;
当前发生交易时收到的评价
: P1 E; p  T* o, j" [4 j$ Pappraise-time: h$ {6 q+ n! `5 v2 b# l
;;
当前发生交易时的评价时间& F% ]% \( E- n
local-reputation-now;;此次交易后相对于对方turtle的局部声誉0 ?: P- Z7 k% o8 m% A$ G
trade-times-total1 Y$ g% m- F! t) W: B
;;
与当前turtle的交易总次数
, t! P; T& O4 O8 R4 ?9 [trade-money-total# ?5 |: H5 i, D9 |) Q7 }/ U
;;
与当前turtle的交易总金额
3 d4 \6 J" t5 ^1 j  ?3 b8 E8 llocal-reputation' G7 G! L# i# {7 p  D' A1 c! B
global-reputation
- ~" R! L8 ^) A$ t) [" C2 G  Scredibility" f8 y0 x9 _5 T9 J3 p) L
;;
评价可信度,每次交易后都需要更新. G5 I6 ~* I; t7 X; i
credibility-all
, u) F, Y' M( S5 ]: i2 _;;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" a! w. p  _  E* V" m1 N6 n

: k% U3 ~% p+ S- D3 E0 o% 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& L" j1 O; `: u1 x$ P
credibility-one4 r1 K+ X% C3 A0 d( q) s& [
;;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
; `8 U& a- H7 tglobal-proportion, L' M- F5 P6 Q, K9 R+ V8 |
customer: G2 q5 q3 }* ~" G
customer-no* R8 F+ B* D3 x- k1 f# t
trust-ok
: A/ {9 [. q, btrade-record-one-len;;trade-record-one的长度
  P( k% ]: N' h- [: T0 G% U]
$ ^/ k" R5 J: L, Q1 N5 {
  N# e& a! j  l% }/ Y# E% {% T* O' E;;setup procedure
9 E; i, ~* K! Y3 n) x$ s7 |" u
$ k! Z, W/ i3 f; L6 c0 cto setup( E0 r; @  z! L$ {- |

* R; Q5 }! L2 @3 t. |7 Dca
, g' ^9 U  U& T: Z9 I
+ t) G; B& i0 z
initialize-settings

$ i% }- p- _; I% f7 X
3 C! ~6 M8 S0 q! A8 M# N6 ?4 N5 [# bcrt people [setup-turtles]
: h" \+ ]! _$ h9 W9 U

6 S6 G0 u# f& ~7 Creset-timer
9 j; |* {2 n1 b4 |1 b: v

# R+ X8 @3 C5 Npoll-class

# T1 H" z# ?, f" Y5 ~0 x1 P' Q# h* M
setup-plots

. s+ ?6 g. Y! ]1 u
/ w' W" t5 J, ~& S0 u5 g3 Mdo-plots

8 u+ U7 c  u7 n* C4 [& F& J% Vend
3 G: G( d* _$ ]8 q1 o* k, J
9 R. N& Q2 q" F4 ]# a: b0 y) Eto initialize-settings! f3 `6 F- z1 H4 _/ l$ P

# ^4 S; K5 u, r5 mset global-reputation-list []

. ]) t$ c% Z0 @, O4 Y; M
. k0 j3 d# U2 _+ Mset credibility-list n-values people [0.5]
& i3 ?( E8 W4 v! }/ E/ s

: u, y0 ]4 z/ Z6 @* l3 Z: Z1 X" lset honest-service 0

- [' g( r9 j1 j6 ?& u" P) k- A, }* l) ?; @4 j
set unhonest-service 0

. }0 w$ F$ ?9 H7 j& l; Y5 V" K, q& u' z
set oscillation 0

  |" E/ a  C& ]) |, Q, ^$ `# u: \" R  \5 y2 Z
set rand-dynamic 0
3 P# l: n# O5 u* y, ~# D. W' Z
end% {/ U) M, l% u
+ M/ Q' }# C9 @+ i) S+ v/ v3 `6 H& T
to setup-turtles ; e; ~( k8 D/ y
set shape "person"! z7 @! C& d# [( ^& H  x" |' o
setxy random-xcor random-ycor( Z1 |3 F5 _0 L0 U8 b
set trade-record-one []8 {4 l' }2 P, a3 y* |: K

! r% a7 W# L7 z, I, e/ Bset trade-record-all n-values people [(list (? + 1) 0 0)]
  l, Y, I( L: y. Q

. m$ q7 o0 v* ^: Jset trade-record-current []* o+ p1 T9 T% |
set credibility-receive []2 Z" y" ~* p" g  U
set local-reputation 0.5
% R4 Z0 A! Y, Qset neighbor-total 0+ G3 }, h  s! Z# F& H
set trade-times-total 0* A; Q. n, l2 F
set trade-money-total 0
9 v5 H: p! ~1 D5 m7 x* _" lset customer nobody0 R- c1 \+ k  c5 M
set credibility-all n-values people [creat-credibility]: W7 Z3 T5 |; B; j% i
set credibility n-values people [-1]  s1 m! e6 E+ K/ C8 D) h! l
get-color
  z$ o8 Z' E0 e" a. f
- G- e7 Z( o. s+ [' Q
end
  l5 p, W- j$ x' V" O1 q, y' u8 F4 v
to-report creat-credibility
) S9 S" T: j! g2 k8 _report n-values people [0.5]# i+ w+ c1 x/ I
end
* N3 ~, |, G+ ~7 w% L  t7 l$ ?- j
to setup-plots8 \  Z2 q$ N! P3 a8 L

" _6 k- _2 ^  t4 d2 z. wset xmax 30
0 U9 c. G. _: `7 ^( D% N& c1 Y' l

& V, p* \6 z: k% {$ g  L) @set ymax 1.0
3 b* X$ G$ U) Y
7 {, {" K3 `  e: s  o/ q2 L
clear-all-plots

4 z1 m% _7 N! B$ J# i4 d& z. [6 H* \' R
setup-plot1
; F1 `% n3 P2 g: ^% k

1 q8 g# s% @- J4 J2 T. W3 p/ lsetup-plot2
- |; a4 u  ]8 z
" C; K0 b2 O1 D3 V& a) K1 ^
setup-plot3

% P# E% k$ {% Y3 _9 N6 t: M4 I' Tend0 @% l9 \- S3 a: t

% ]9 M% g7 I2 U- A8 }" d- d) O% @;;run time procedures/ c# t( a0 ?0 y& [* o8 I
  J4 E, Y8 Y. M, s9 k
to go+ `  z; R. ~" V

( L# U. N) V4 J, @% p1 }" y( o, B: gask turtles [do-business]

/ H5 d8 t! k0 j0 a/ n' Bend
0 K! z4 ^/ S3 P: Y) }" F! @) u: N5 D5 u  l5 h$ G
to do-business
3 N* }! b. W( ^; y
% I, O: H3 [2 d) r8 X
( A8 R2 K' E: g1 x
rt random 360

/ ]1 D6 k) T6 l# y$ s% f( J; P  p
8 z" P, `0 l! J8 D' D% gfd 1
' c+ X1 c% ^. j6 _+ J
$ N/ V) u  f# r7 K: Q) M2 W
ifelse(other turtles-here != nobody)[
, t) D7 q/ b, Q0 B8 y7 X

3 I; k, `3 {$ b0 r/ g0 qset customer one-of other turtles-here
; b- S- S3 X. \; G$ @; K

0 S$ |# |  n4 H: q' t* p;; set [customer] of customer myself
" p3 D: k* B# `! ~, c+ f

6 ]8 a& Z$ Z, r( U* i8 Q# W8 eset [trade-record-one] of self item (([who] of customer) - 1)0 s9 ]- W" [2 R
[trade-record-all]of self6 l3 }, b3 L0 Z& c" ]
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

8 B6 O# ?* e$ {$ E! o8 v3 V" P. O* n* `4 S: }! M7 g) M
set [trade-record-one] of customer item (([who] of self) - 1)
# ^% g* _( E0 w) q6 _+ C% s[trade-record-all]of customer
* @" f( r8 b/ I9 ^
5 d  D8 S9 {" h+ O# R; ]
set [trade-record-one-len] of self length [trade-record-one] of self

0 s7 X4 Y, n. z, z! l$ U2 N) e1 M2 }  {- L
set trade-record-current( list (timer) (random money-upper-limit))
/ S5 r3 {' D- Q0 A+ v
' b" |% F) d( _
ask self [do-trust]! r$ \0 Y" X& W9 X
;;
先求ij的信任度
4 f1 }' B- v* K  G5 \3 I/ N  S" {
% _/ G9 A; c. P$ eif ([trust-ok] of self)
0 D! E1 r1 h1 Z) i;;
根据ij的信任度来决定是否与j进行交易[
9 [" N" L$ E+ vask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself. ?& R! @2 T0 @* Z. t0 _2 C
- f1 A/ u. x4 {$ H8 r
[
1 c# @& w/ K1 V, |$ p# e6 w3 V9 S
% f" Z. r7 p+ x% M& v' v) g
do-trade

5 N' P; R+ A; V# c; T& O# Z
  J  i4 b; a9 o( D3 {update-credibility-ijl

" x* l: L' u3 o0 O8 ?9 o4 d. x* A/ q' O1 L+ k/ ^& H
update-credibility-list: c0 F0 R8 ?- i: ?) ?
4 C& x& l; Y6 a9 J

! f& C8 V2 u  j/ P4 `! _update-global-reputation-list
+ z8 {7 \% U' z, `

6 A: H8 y" M* V; i, ^1 H) hpoll-class
5 f* C# R& w: }
0 d' e; I2 b& j! C! |
get-color

, Y( N4 c2 B- X; c+ a' }4 S& ^  x' Y
]]: Y' T4 i4 b7 x& d/ W/ r& C

* Z( K1 O) p2 A0 d* H;;
如果所得的信任度满足条件,则进行交易4 h3 W7 l- c9 z- m" W& l
! l) X( }' L7 m, ?" k
[

& ^) I1 W; B7 R5 W# Z
5 {' w8 p- b1 Z+ s* brt random 360

5 W( K  t8 z% N5 j5 C/ Z+ W% a$ ^6 x7 v7 q
fd 1

2 H/ B5 p0 L' q4 L3 Q; i- m* p2 K, c. k  [( f; R
]

- z. d( W  _) A" f: N" M" Z# U' |: [7 s* Q" u" H1 P
end

4 y( Y9 F6 W( r* v3 S
8 [, U% u% x' Q2 t- E% O( nto do-trust
6 Y8 x! u3 N+ _3 O2 Cset trust-ok False
- y% q: g6 h1 y8 a, p' i: l( v; _3 x, v9 \2 F
' e* C; X- d" x' s: i& {: X
let max-trade-times 0
- g/ Y, |, \% N- u" G, g. w7 Fforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
% c8 {" t, E, K% }let max-trade-money 0. H& y. g4 k& i
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]; J0 s1 p; a# }, D& ^. u. _
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
8 y6 z: z1 [( ?8 [+ K+ u% v
( M; _+ b# i& W3 m( W2 k. p6 \
5 e/ e# U+ N# d, ]7 g$ W
get-global-proportion
/ ]5 h" F$ j" s, h6 elet trust-value$ M% G( K6 Y( E3 \. ~/ ]4 \
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)
& Y0 U9 N4 p- F% r) `( s6 G
if(trust-value > trade-trust-value)
6 g. M, I1 {& p  G9 m3 P- {[set trust-ok true]
! Y( N% a! L$ v" a; g% bend
1 u2 V1 v0 ]# t/ F& `# K/ z
% a$ E( N  j# m5 Jto get-global-proportion
6 W$ O. A9 e/ q- Hifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
& G+ n" `+ {1 a[set global-proportion 0]
: {" Y" |9 \$ X. Q& r! k[let i 01 K3 m, f; ?8 o" U! S
let sum-money 0
: C# h) c& [) F! |5 i0 rwhile[ i < people]
( m. `4 W3 O. z$ L8 H8 O8 {[
. m/ I' P' Q: C2 M* v/ Jif( length (item i
& p1 ]+ z+ {0 K7 J, l[trade-record-all] of customer) > 3 )
$ @  j5 y2 T% D0 P* e
[# G6 T  M5 b2 c+ i& [
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
1 l) f7 n4 e# Z" p  Y]6 m9 c7 D0 H, }6 G1 l! N7 K
]
5 U4 R! f' s$ O7 l, Y4 xlet j 0
- Q2 m8 i3 `3 w& U% Y( {let note 0+ U0 N9 ^% O; H; z0 `- }
while[ j < people]
; a' a/ f* {4 g& F: P' w6 ~[
+ r4 M: F" w) m( H$ l/ z; [if( length (item i3 h# k: x3 }3 C2 r
[trade-record-all] of customer) > 3 )
! H) ^6 A0 S$ {$ E* \8 C7 ^9 v0 c7 c
[8 u8 ]1 l5 o) M' ]8 ~, T
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
% a% U2 {' ^" n" k8 r9 U[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
& S1 Y' V) W3 X4 i$ }# j[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]1 a: u) ^, w7 {( I
]5 k1 O/ }" m  A4 L6 z
]
( g& i- J. L  n  ?, @# Fset global-proportion note! `# D8 I; n. |; M( z2 A$ G
]  s2 q: S6 F/ R0 F: e( P" J
end% J7 u8 S; `' l' x

0 T7 Y8 b" x  l3 _, F* ito do-trade
. E4 o, [  X9 R! O2 D( m;;
这个过程实际上是给双方作出评价的过程
; s3 Q. r7 i/ gset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
6 D  b* q0 [3 Y; C( C; z/ Qset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价0 I, w2 Q, o( u; B& W
set trade-record-current lput(timer) trade-record-current
3 I. ~: O3 X0 R; r( i) [% D" ]7 Y;;
评价时间, {3 k; }2 A4 ]' J
ask myself [6 \# e9 e5 y) ~# \# T
update-local-reputation. _9 t, G" {' X
set trade-record-current lput([local-reputation] of myself) trade-record-current
0 y1 }7 p1 \- k+ C+ T5 z]
4 [$ Q1 G7 l5 G+ Pset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
0 W  `; z) ~, f- R% t: J;;
将此次交易的记录加入到trade-record-one6 O& ^2 ?8 b& d' m" p+ b4 c8 X9 ~0 E* J
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
1 M# S1 G0 _1 a/ Y6 r+ K5 Wlet note (item 2 trade-record-current )
3 \; D0 p7 h) j  D6 k9 Bset trade-record-current; l" A# I+ H/ k! O
(replace-item 2 trade-record-current (item 3 trade-record-current))
1 F) s9 S# f6 f% V
set trade-record-current
0 j, y: k' g: A2 J' b(replace-item 3 trade-record-current note)' t; N8 z$ c  B: v' W! V8 t
$ O: T+ a; [$ v; ]
, [2 E2 O6 v4 c" L( M2 `
ask customer [
8 E8 U" C" g0 o& E3 ?- Cupdate-local-reputation1 R* K1 v8 e) W/ o4 V) q: h1 _
set trade-record-current
4 \5 s& \! t0 s(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
1 ]$ d6 s3 r& q" H: s+ f( R
]
" x1 L* J1 c- v4 J% T, H1 {& z: t4 e5 z: g# |

1 U) N% h* L1 l. a1 T; [1 ^set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer! f; H/ @, M1 i8 ]& A7 q! {
) C4 _4 I1 }2 H4 _* c* g5 D( p' t1 R
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
; U& w7 G% y' \4 x$ S# };;
将此次交易的记录加入到customertrade-record-all
, g, q% T/ j& T$ Y/ V/ v+ X0 d; Oend
" c9 l  a' C0 P+ @+ O
5 |+ ~5 i$ ~  A8 k# E% f: ?& gto update-local-reputation$ g) O. U% c: x) V# G7 a0 x! _6 t
set [trade-record-one-len] of myself length [trade-record-one] of myself+ w/ r9 y7 M" U" P
+ @+ R. W) b0 U0 s
$ K; b. i5 N1 ~1 \( |
;;if [trade-record-one-len] of myself > 3

; q3 `. Q! |: x: Uupdate-neighbor-total
2 {0 ?9 ^; K" y" a: B* q. \! Y% I;;
更新邻居节点的数目,在此进行
9 o4 H; {* K" o- ]  G2 C/ M7 j8 glet i 3$ y$ S8 R; f# \  \+ S
let sum-time 0! ^- y8 V4 L; z
while[i < [trade-record-one-len] of myself]$ J. k" l$ K7 y$ p
[# |- ?, @: c, |) c/ `4 f# O4 T
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )* W* C1 U/ q9 v4 E6 z, I$ e
set i
- X2 i6 {# x" ?. H( i + 1)
. f; c$ a. u) q" G
]2 _$ L5 I: Y, e
let j 3
+ M! W8 @& ^5 x4 |& }let sum-money 0
( `- d& e# @  q6 ^( rwhile[j < [trade-record-one-len] of myself]2 P2 l( e( f  r0 J4 L- P  {
[
7 o0 w/ e6 D, @5 Z! F& d3 Dset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)" }/ `" ^0 d* \$ [7 ~5 M
set j
' n4 T' {2 ?: C9 B  ?4 \( j + 1)

( H/ Z4 m8 K6 L7 X3 n2 s# w$ M]
# D4 S/ @9 |& g$ }let k 3
  B  p- Q- y# u2 c; j) A" Ilet power 0" y0 \0 s5 N4 Y8 ]/ m
let local 0
0 g! D6 \; x8 cwhile [k <[trade-record-one-len] of myself]% g; u4 {$ U2 o( Z1 E1 Q
[+ q( I% \4 `  ?  {: m6 c' a3 R
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) : U  a6 U0 ?) l( w0 a3 Q, I
set k (k + 1)
9 U! Y& O0 t- y! s$ X]
; V1 J# Y! [1 E+ `8 H' ]set [local-reputation] of myself (local)8 f7 j0 l0 ^- j) O$ j* I- O/ J* r4 G
end& t; Z# K  k7 v( R9 O- [( T5 S

5 g, J/ I/ G/ }; `to update-neighbor-total% Z2 y& s4 \& {

. \. _/ p. k7 K; ]' H6 Z4 Kif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]5 g/ s' g  {& c9 t
! ~9 `8 O; G$ t6 d) `- R& Z5 o2 ~

8 r5 q. l% y+ F8 Y  A6 R% @end
) m" l8 Y2 r7 ]( o0 y7 f0 a# r
, T, g: A0 n4 x6 _+ sto update-credibility-ijl
! Q% V! m. L& L: `1 Z) h" k+ S. `2 c, v7 S
;;
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。6 b3 Z1 P# \+ S- y
let l 0: q7 I3 e7 O8 F0 f6 N+ _
while[ l < people ]' {# {2 n, q7 d! `# i
;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价
3 @' @* e$ q8 w; u/ t" t[8 {: r0 W+ h6 q- i0 X) q: Q7 [; h% s; h6 q
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
& f: B% x2 d: b' N  b% z2 K) kif (trade-record-one-j-l-len > 3)6 p. g& ?% G# }+ \) r2 k8 g
[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 `6 {1 j% W2 W" f
let i 31 T3 A( j" P& a. Q- e! M1 \8 G
let sum-time 0
7 o) H% A# E' U8 A1 a/ ewhile[i < trade-record-one-len]& k0 Z4 D8 }" M, @& I
[
0 l8 ^8 X( V  V! n, R0 o' Pset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )' m2 A# J. y1 r
set i% U2 G+ g. a) i9 R3 K
( i + 1)
4 |: _* c$ N3 z' b5 N$ g% f' C
]$ b" i, A4 r7 L0 D
let credibility-i-j-l 0
1 l  m1 D- h. t0 S; T6 X0 n;;i
评价(jjl的评价)
" o! H( x$ @/ F6 J; Elet j 30 f1 f/ `3 G  K" T
let k 4
( j# |& N" O% h! gwhile[j < trade-record-one-len]5 p- @; K) D8 p" K7 e
[  j! e7 @3 Q$ t5 b7 J
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
/ h# G8 Z8 Q/ X4 D5 ^( o. Iset 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)
5 L+ O+ ?' a8 c6 Dset j
6 W5 |9 w! M/ T+ H! p) J, G  J( j + 1)

1 D7 C& h- G, m9 e1 Z) D" O]
8 G% H) p& c0 Rset [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 ))
. h$ j2 p, @% C- q7 V& B7 ~2 l1 F
- q7 O  e" j' a' ?

+ N, g" @% z4 F1 n4 blet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)). j' s  E/ K+ o8 I
;;
及时更新il的评价质量的评价
9 t  w/ z% T! l* p; k) p8 b/ a: R. jset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]/ `( y4 y( f: }& l
set l (l + 1)' u: t1 w: U5 \6 D
]6 g( q# h7 o6 J* Q5 F
end, b: Q& a' J1 S
" m3 {/ n6 p2 s1 V# h$ M8 A
to update-credibility-list
+ D0 n- Z1 S* _5 S* rlet i 0
0 R# [+ X4 l4 P( X. b" zwhile[i < people]
9 H% d' B' m! i- g: h3 J[: S/ z$ v, e5 u2 n" e' Q
let j 0
$ D; r. d! M$ z5 ?9 m" u" ]let note 09 N/ H5 K$ _4 F9 H
let k 0
' m& }' t, i6 w6 [/ X' g;;
计作出过评价的邻居节点的数目
2 A, L- F! Z6 A0 ]) \while[j < people]
6 V. b" u6 S$ I0 w2 a[- B& B+ _/ j' g3 I
if (item j( [credibility] of turtle (i + 1)) != -1)3 L" [, W4 F6 w5 B3 a( {% v+ o
;;
判断是否给本turtle的评价质量做出过评价的节点
, ~+ K4 F; w  I3 N[set note (note + item j ([credibility]of turtle (i + 1))). V# h8 @' j) M8 X
;;*(exp (-(people - 2)))/(people - 2))]

- q. b; v, p5 S6 G5 _) [set k (k + 1)
. l2 z, J6 z; o" {1 w8 \]
4 `6 U8 \) @5 c/ F: kset j (j + 1)
0 Q" H! w. H* b5 R; }$ c( W' s]  j3 |3 c9 w) M# F6 i5 b7 S5 ~* y
set note (note *(exp (- (1 / k)))/ k): r6 j8 c4 M& L
set credibility-list (replace-item i credibility-list note)& g4 J" L3 W8 O% J+ L" d
set i (i + 1)
8 T5 ~+ k5 y& N  W& B]- f2 U# X) B! {! I$ i' i
end
" c* w: u6 L/ i6 j7 F& m; _8 }6 R! A' L" a% n  l$ X
to update-global-reputation-list. {' P- X8 Y" V/ t
let j 0& e6 y1 |* A9 M2 m
while[j < people]& `' ^- B; a! V6 C1 {
[: u7 P2 E) w! q
let new 0, z2 u1 ?2 f- P
;;
暂存新的一个全局声誉3 g0 C, k; J# Y8 M1 n5 {4 ]1 `
let i 0( Z( Z! Q8 C- \, a& v5 j0 F
let sum-money 0
- `- L  D! a' wlet credibility-money 0
  O6 s/ V/ T' _+ j2 t5 R8 B% P& }while [i < people]
9 ?9 N1 z2 k2 D7 h) x+ R% u. E[# L# R! N; h5 E$ i" D# [6 O9 v
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
0 O6 i3 F! `1 d' n& A: U! nset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))+ N' X( y& z8 W6 c, b' ]
set i (i + 1)
& j6 r: G  o* x: k5 n" H]9 `* [1 d( X( G' L5 U% U
let k 0
4 }1 d$ Q- O" ~2 {. W3 llet new1 0
8 r1 }  ~/ v; I. xwhile [k < people]
2 i* T. ~; {( H- K( |$ c; x[" [; C- \% U- z3 R; a# f& w- K
set new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money)& T6 \4 c5 U  K4 V1 O
set k (k + 1)
- `# }( q3 s) _]& L- S) {$ @0 e/ [
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
, |6 c5 B( K/ i8 O4 ~5 S2 w9 ]set global-reputation-list (replace-item j global-reputation-list new)
/ b: l$ Q' N9 l* r1 d# N/ Tset j (j + 1)
, o& I( Z/ B) L4 h& n]
) B8 q5 M; h. ~* J3 ^end  L+ q) d- a7 g  @  M0 V( g" u
8 t( l  Z& q9 g2 f8 I
! C8 y6 G3 F9 S0 Y& H, v
' H9 [* L8 c3 o3 o- z2 K
to get-color9 g, W% U6 F) i) I
! D, ]0 ^! ^- A3 q. }6 I. u& y+ n4 h
set color blue

5 N( b2 R; h) V$ v. u; I8 ?4 Q: N! oend2 V9 [1 o* F2 p! u$ _

+ f8 E+ J" U2 k2 A2 Z' }8 oto poll-class
. H2 i5 f% Z( b- e5 F0 x6 pend# o7 W& I; `( [6 N: M' ]1 {8 P% V
+ N; @/ W: g) g+ Q
to setup-plot1
! T* J0 H1 ?0 T, S; i3 d# ]
" y% i7 i* N0 n7 k! gset-current-plot "Trends-of-Local-reputation"
! d1 @$ f0 W' I; ?8 ]$ v

3 _* s  d* ]* D7 S. ^set-plot-x-range 0 xmax

1 l/ R# O. @4 P" X' R) y: R# p5 \& `0 Q2 A1 d' R2 {( G7 |
set-plot-y-range 0.0 ymax

2 p  W% i1 A" nend
! V: Y5 w6 h: I% b* ~5 `8 I% C7 S: i! U( P9 Y
to setup-plot2, }  q3 U6 F3 ]

5 t8 h$ R" x* d; V, j  D7 M& Qset-current-plot "Trends-of-global-reputation"
7 ?# E0 H  @9 C' Y

! h2 ^1 h  h% G5 L, ^$ C$ ?$ t( Vset-plot-x-range 0 xmax
' v5 \; T: U& ?+ D4 Y' b

+ S+ P7 [1 J+ o/ |% nset-plot-y-range 0.0 ymax
8 y5 R: H* O. y# ?
end! I6 T( T* @) l% P& V# `& m6 m) z
+ Y+ A1 @+ q% g/ t) k  C8 g7 ^+ c- N
to setup-plot3: m# r$ G! u3 B4 R
/ A6 J2 L; l% M. D4 z
set-current-plot "Trends-of-credibility"
1 c" m  g8 s  F7 q

, i) d7 Y2 ~5 L7 F0 vset-plot-x-range 0 xmax

! Y8 j8 M/ |# j3 @: P3 W8 W8 Y' B8 \- _" o. s: I
set-plot-y-range 0.0 ymax
' g$ G" Y6 s1 o8 v+ H0 O
end
4 O1 w8 b3 K2 Z1 J$ x% W' e+ F' Y0 Q5 p0 }. q
to do-plots' o: s6 g& k" H
set-current-plot "Trends-of-Local-reputation"
! n3 l4 e& e: E5 ]set-current-plot-pen "Honest service"* Y" W$ i: F$ o
end
5 l. x; g1 ?9 n3 W$ s) d: ~* z, j  _& v; w# |' v/ i/ y5 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.4 \1 e: Y% B: S

1 J) i6 }9 p( T" B" X1 e5 V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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