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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:
2 s! E' I5 e5 ~$ Z* A# P7 H. pto do-business
3 H4 V4 ?( w& H: _% b* G4 o6 g rt random 360
8 P! M. }5 I0 C. ~# R- V" B' S fd 14 ~' m  [+ [6 H) q( N. ]
ifelse(other turtles-here != nobody)[( Y" w6 N1 |8 O. |; W6 @
   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.
: ^. X- [7 T/ z9 A$ V9 H( j   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
5 \( q/ m1 {/ w3 L+ N3 s' X7 Z   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
! M1 X6 j. P. |   set [trade-record-one-len] of self length [trade-record-one] of self' v3 D/ [" L) E& U# F
   set trade-record-current( list (timer) (random money-upper-limit))
( H8 V) y% [& A7 e. J) [7 N5 w# N, i! E
问题的提示如下:
6 p2 z& W$ {7 B* J0 ^6 ^. i& j. D$ f9 I* f
error while turtle 50 running OF in procedure DO-BUSINESS
1 [) J* n9 Z3 h1 v1 P  called by procedure GO& x8 [: g3 ?; c8 [
OF expected input to be a turtle agentset or turtle but got NOBODY instead.2 |/ k( z* @) R4 E, Q) T
(halted running of go)
4 G% i. ~. L: {9 K6 j& r4 {
2 k) w; R; i5 H% d' o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~~0 ~! y9 I- U8 ~
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1 ]: m: C+ k) B4 M# j2 n: C
globals[4 w& o6 S5 }  {+ z  E( ]
xmax& G( J$ h9 V5 ?/ H
ymax( r7 |. S! Q7 O$ {
global-reputation-list
0 P" l5 ~# P# t& k. Z/ X
+ p6 J& y. C) R4 _4 K;;
每一个turtle的全局声誉都存在此LIST
) L2 ?) k# ]7 l- D7 k6 scredibility-list+ k% P& n. e& a' r9 A! S
;;
每一个turtle的评价可信度
; |, e# Q- c: i. u0 m6 [9 |$ j# ?honest-service
: [% P( d3 X8 N3 @& f7 x5 Zunhonest-service  I9 u8 {3 P! X; J
oscillation
( R2 |  I% m3 ~  p- [, f! Krand-dynamic% _! r9 e0 d3 }7 `' `
]1 c7 M; t# k- G& y
5 ?6 k1 _, s' G
turtles-own[# u  B& P. K/ P4 R- O
trade-record-all) w9 N9 k1 A1 D" k7 X% [/ H  L. V
;;a list of lists,
trade-record-one组成% `: j5 f/ o3 \! o
trade-record-one# S/ q- v1 T6 n: p6 \/ M: ?- z
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录: _7 q  P% j) {, [7 R
& U( I1 s+ g$ ^. x5 H: q( o( H
;;[
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]]/ D7 n& ?( ~6 b1 J$ w- `. g$ N
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]
* m4 H. e( K3 n5 w# F; [( P8 ccredibility-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
$ w) G+ ]+ t3 g0 Q9 D# C+ ?neighbor-total0 C4 E4 M) r( \
;;
记录该turtle的邻居节点的数目& j8 v0 |  U" Q
trade-time
3 ~' P# @5 ~, p% a;;
当前发生交易的turtle的交易时间5 {" M) ]% E" {" e# f* Y" A
appraise-give! B% L" T9 u* L- O: l9 c
;;
当前发生交易时给出的评价
$ v! {2 G+ h- w1 j  E7 sappraise-receive
% t5 g& {; R5 x& W8 V, _8 l# _9 s;;
当前发生交易时收到的评价( O/ y) ~8 L. x& p% \
appraise-time# P' ~; r- \5 K6 [) ~
;;
当前发生交易时的评价时间
1 Y. b  T" {3 h' }; m" Ilocal-reputation-now;;此次交易后相对于对方turtle的局部声誉. a! G3 l8 {* f
trade-times-total: D4 S: {8 {) {" n+ O1 R
;;
与当前turtle的交易总次数" }. o& e# J; N- _$ T0 P
trade-money-total$ ^6 |' B) c6 b- u% V" B+ L. m3 B
;;
与当前turtle的交易总金额
3 r. e. N: ^5 Y/ I3 R9 x4 ^local-reputation
( |8 t/ v2 I4 a4 U6 p" }: Uglobal-reputation# Q. _7 V! O8 M8 j3 |6 L  Y
credibility! b/ g. s3 q: x2 r; B: B: H/ c& M
;;
评价可信度,每次交易后都需要更新
5 N  Z  a! l. f0 s9 E8 B) d6 r7 |credibility-all
$ \8 v" D- q' L$ I) W;;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
, f/ h  b! U5 L7 b' p* k: K7 [) [# _  @. T
;;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
9 e& ]$ m  b+ y; xcredibility-one) d% |- N- ]6 z" ~+ E; Q. ]
;;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
( Y6 {3 e# N! G$ v& `+ d; uglobal-proportion6 O) s2 A3 e( t. M3 p
customer
8 ~1 q9 G& z/ |! {* ycustomer-no+ q# x. a6 ?9 w" H+ L5 F
trust-ok7 x; N9 N. i9 A# ]
trade-record-one-len;;trade-record-one的长度4 C! ?: F) g8 N& l1 w% z$ p
]
6 _! Q6 U) z: e1 v- J1 w7 T+ X
6 K1 _9 r/ Y* c6 p) o;;setup procedure
0 W3 [) x3 ]6 b' v4 a/ V* X- ?+ ?2 b2 D- a" V
to setup
7 x; m. W! l7 d" t' _  x0 U
% C4 c" T/ Q+ pca

! k5 S  G9 C. d0 U# a
+ C7 C; H9 U5 ]& h/ uinitialize-settings
3 L; Z  O2 h  g
+ }+ w- s# G2 J% j# P  M4 @# ?4 i
crt people [setup-turtles]

, T0 W$ u, q  D; p8 C0 _/ o: Q) Y+ A6 J
reset-timer
5 g6 M. `. n( X: `& d7 N
0 @4 B* P. P) X7 f4 c2 Z+ `: J
poll-class

5 M5 l7 A2 Q' k  Z
" K" ?* m0 d" x1 Jsetup-plots

2 Y9 X! N- w4 u9 |' h0 c7 r* O3 W5 b% U9 M/ t4 V- J
do-plots

  A( e! a$ _* A$ m7 W9 Kend6 E2 c8 v* X) n' }0 m' y( I4 R

7 p+ N& ^$ u( c! e4 Z1 x# u9 Ito initialize-settings
( Y; c; H& a+ j& p4 {* _* C
! n. V, o( U  I& f& w+ Zset global-reputation-list []

- \( `, o  W% F4 [7 H/ v. @% {% P+ b2 P
set credibility-list n-values people [0.5]
, r6 F! M; b2 f  t2 q

2 Z5 S6 z/ q7 M$ @9 r4 p/ E4 ~/ v" I- fset honest-service 0

8 J# `5 f' e& C  Q! x4 n1 _3 D/ S; ?8 ?3 ^# {
set unhonest-service 0
1 s  |5 B4 ^# J, ]1 z

& Q# e. C( ]! N- C1 _% dset oscillation 0
" \% a/ R, J1 A+ g4 V
2 s  a) K: u8 S. V" g
set rand-dynamic 0

9 c2 D# O, {- }; g# {, U3 Send% [9 S5 q' p" I9 `% I" t

' ^, S: I% s+ [0 y) d' M4 Y! W; S4 Pto setup-turtles ; p( c+ G3 p4 W! \- O
set shape "person"
4 J+ v4 M9 e( G. V$ o# H1 C  Vsetxy random-xcor random-ycor4 T+ e1 K9 ^6 R* b" m. D! x, W
set trade-record-one []
5 P2 U& n: b3 _& \; D2 O
8 l# {! k/ M  I
set trade-record-all n-values people [(list (? + 1) 0 0)]
) g1 }3 a" g. A& M

+ W0 G3 L9 k, v# ]/ D( oset trade-record-current []4 \" t1 ]3 e9 g- m) a
set credibility-receive []5 Y5 r) h/ F6 W5 l4 M
set local-reputation 0.5# y) v3 h% H6 o+ P* `
set neighbor-total 0- X+ s" g/ c( }8 I5 Q) Q. @- Q
set trade-times-total 0
2 m! |+ ^& \+ q' cset trade-money-total 0
( K( x4 t  B; H+ R+ w* F7 ~set customer nobody
, l  ^0 {( F+ j* v1 x' h( @set credibility-all n-values people [creat-credibility]
6 r5 ^! Y) Z8 A% aset credibility n-values people [-1]
% B4 X* V) V& J) Y0 ?$ H. Eget-color1 _! N; @' {" ?1 C' q

& z3 C$ `5 }+ V9 E# L5 ^end( Q5 K0 @  x2 G7 ?: `* i7 d; h

& `) t8 `( Q/ }5 {# qto-report creat-credibility
' d( C! c( W- ]# ~report n-values people [0.5]
4 O4 ^5 v9 B0 a! a/ |8 Q- Vend5 e' |1 X2 b  a( [

' p& F' M1 {( k& w3 B* Yto setup-plots: }" R9 U6 l1 U4 X
& B# \( B5 ~# u9 {! R3 h; c; }
set xmax 30
5 X: U! g" H+ t

$ }& ]. J: X2 X, Iset ymax 1.0

) D' h- O! p# g9 A$ _- m. x0 Q$ o+ ]# o; Y" I
clear-all-plots

; t& [) O5 L0 k7 `" ?; |
' P# w3 ^2 T1 S/ k) wsetup-plot1

8 ]# }/ s# {6 M' o$ W) T+ j# I: Y5 y. h' G% a4 M
setup-plot2

0 o5 U( `4 y8 s! d* _4 ?( U! P% v
setup-plot3
, `; u; P, l1 N: X
end, `, \9 I4 ?" Y5 W- {
. ]" v6 ]# u( U6 v( h+ e# n
;;run time procedures% e* b+ _" c, V1 U

/ D7 C; t' F/ R* C. [to go
  \( W& f) f* e  w9 I! a, ?1 t6 \4 F8 p
ask turtles [do-business]

: K3 x- y# d7 N' R! _end
  q* ~; i& b! u2 w" x' Y, G! e; e8 R7 i: _6 S$ ^
to do-business
& v8 V1 }, z* N- y2 v5 z$ Y1 J1 M. w

! ?. z- m5 \  \  B- b' h  m* i) l  o8 Q7 H# d  {) @$ z. ^9 ~
rt random 360

- Z9 m, f2 j5 ~) n$ r/ L# q* n) ^- m
fd 1

  J  k) g2 M2 Q% I
, \! F! Y# Z; fifelse(other turtles-here != nobody)[

* H. A, ?. E( O/ i: q7 u( Y3 W  b" q) n7 y/ K' y' c' Q$ O+ A0 Z
set customer one-of other turtles-here

; s+ L: C% \$ o" l. X# j+ W" a% k9 f
/ t( [9 L& M4 K% ^' ]: R8 z9 W4 W8 ]$ r;; set [customer] of customer myself
* l% H, d6 ]9 Y; r

! v$ h8 _  t! y+ T" R8 |set [trade-record-one] of self item (([who] of customer) - 1)( |% V. l( Q$ n- B# P+ t
[trade-record-all]of self% f4 S/ _- Z7 s$ C* H
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

% V! h7 |# g8 }# r2 t8 B
0 X/ n& a, Q  m( T# _. ~set [trade-record-one] of customer item (([who] of self) - 1)
) G' k! E$ k& I5 e, |; I4 K- j/ K[trade-record-all]of customer

+ a$ l3 x0 J; q/ T2 @* Z
- u7 L& h1 N5 S0 Cset [trade-record-one-len] of self length [trade-record-one] of self
1 j  x, k/ ]) {0 W; g4 a& J: z
+ E0 ?1 a+ z* x3 _. G# A
set trade-record-current( list (timer) (random money-upper-limit))

0 k7 c: n# L, j0 r
: a5 p2 S- C- j  Q+ E6 ]9 qask self [do-trust]$ |. ~! }2 p- }8 |4 I
;;
先求ij的信任度
( U, O7 P4 e: p& l4 ^+ ?3 j* R( }% t# ]1 |8 ?4 O
if ([trust-ok] of self)
8 u! [7 m' o: m1 R" q0 y" a;;
根据ij的信任度来决定是否与j进行交易[: X7 d7 R8 w; k0 K$ X# @
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
9 P1 [8 c. ?/ \5 u: Z% X7 c" Z4 F# c* a# p6 Z
[

1 S+ p6 J: S6 L6 j* k8 V, D3 X0 ]
do-trade

! P. S2 R' H. _6 N! P+ q* G& z  S. N" Y; v/ x
update-credibility-ijl

( N# x* R$ v- k3 j9 h. I1 B
1 p' D: Y0 W2 z3 eupdate-credibility-list* e0 H9 r; @2 l1 g0 M7 _8 N' b

3 E. N: k3 M9 S" s. Y5 N7 Q  b, E/ b+ {0 C" ]) j, C$ V) E
update-global-reputation-list

  o3 u  t. o0 _4 e! ?1 O/ g9 H3 e" r6 q) c2 D
poll-class
4 _+ G% G5 R; Z. g7 @9 W
0 d1 S+ J: v" J, X5 L2 `
get-color

8 j6 `- D$ H9 k  `
, W: e2 u1 y# \( _]]
+ b9 B; l3 l3 t( ]4 I$ g( G0 H8 q, O# L* V) Z- o
;;
如果所得的信任度满足条件,则进行交易% I- ~& q4 Q' s4 u
; S8 _* l5 h  @6 P* u6 J/ O7 S
[
1 L# e9 E& k8 L2 V0 Q

/ F8 S) F6 t  X' }9 Yrt random 360

) q3 m' s4 ]6 \9 ~' Q% m  d
. z0 C: K' s! G- O7 Wfd 1

4 K9 S' Q+ A8 Y" W9 a. l* z; {; l6 `
]

8 E5 R3 K: l9 P
6 G+ {7 f6 y$ q, d1 f% [# o# z5 [end
8 u) p+ [4 t) C

  g( V  T  j# g% @6 d" Y6 @to do-trust / W" w- d5 f& \, H# Q3 L% D& |" `
set trust-ok False9 [5 ]8 _% @& e. t" ^( j$ y
: b! |; m0 L  \, U2 x
. h7 n$ i, `# Y' I  b6 `
let max-trade-times 0  C2 P- d0 M6 p( R
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
9 T" \3 r) b% Vlet max-trade-money 0
3 Z$ Q( Q3 s* X6 u6 e7 pforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
- I8 z; L5 j+ p( N( A" _let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))) M1 }! C; s  z9 ^* t6 ^) K
+ k8 I; E0 d( e( p

9 B0 s0 d. P; b# W- j: M6 rget-global-proportion
2 C/ a, A& V/ Q1 L6 p# Vlet trust-value* l% q$ K# F- Q* l- Q
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)
. U% J* c9 l" W1 u. n6 ^* u
if(trust-value > trade-trust-value)
* h& J! x4 ]7 y  o8 D" c8 e[set trust-ok true]2 b5 z* W" G5 ~' u2 ~# t$ x0 T( u
end6 K! a, R9 o0 B! W
2 H0 E. c5 [% ]) h, t, G
to get-global-proportion
3 S( v  E' L% W/ w2 R. I7 e. d; aifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
# T' t* @3 d- b7 K; g$ L% k+ v[set global-proportion 0]' T% O( n* X% M% J! @; {% [: T
[let i 0
7 d  Q' L4 n; M# ^: ]let sum-money 0
! `; @6 y) \7 x7 ?0 a5 ], |/ nwhile[ i < people]) Y5 p' ?0 D6 P7 d' F
[
0 `) q0 f% I* o1 nif( length (item i
" ~- J$ L! i" L[trade-record-all] of customer) > 3 )
" x" d8 {: m5 }2 S" Z  y
[
6 B$ F: Z/ m! x2 p; ]2 A) Nset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
( d& G, j2 H* z- K( ~]  G4 H/ }/ }5 ~! V* d/ G
]2 H0 }7 [3 w0 B; m1 S" ?
let j 03 T8 f8 \. k  |' L5 A7 D9 A" V
let note 0
. a# b% L# M! V+ _while[ j < people]
3 q" g& C/ B1 E+ ?1 J[
6 m3 a+ V3 ?1 n2 F) a9 H6 Vif( length (item i
- y6 f9 H1 X% Q4 W+ _2 b[trade-record-all] of customer) > 3 )
) U5 A* V7 m4 R
[5 [$ ^- M% R( @- w: y
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)) R1 I* o9 i7 ^
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
  G7 P: l( E$ q3 B[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
& }3 |/ p% n: w! _  G& u]4 p  g) T' _$ y7 Y" A9 e" f
]
# O9 X) E# r# C1 p0 H* Bset global-proportion note
3 l$ V; @. d* E- S- q, x0 y! q]
3 w& }6 b- E( Q8 W0 n% W" lend+ M  w' Q. K  V( D9 T

8 H% T( t& ?6 f$ w9 |4 nto do-trade- S. J# M( H" ?) Q; u& A. ?# H: R
;;
这个过程实际上是给双方作出评价的过程( w4 D, M4 \. a! p
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价8 Z4 V0 G& ?7 y( f. M
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价! w- W( x# o8 L4 X' A4 s1 h! f; s1 m
set trade-record-current lput(timer) trade-record-current( d; ]+ i; ~2 m# E* H% Q" j
;;
评价时间
$ `3 o/ D/ K  l9 x/ c. F6 xask myself [
. s6 N( o# d( \6 kupdate-local-reputation
- a2 H. q  v+ yset trade-record-current lput([local-reputation] of myself) trade-record-current1 U; Y4 V- }5 t! [6 B
]
6 Z& x( P9 `) l$ q. v4 `set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself1 C9 p) d' G9 g  a/ D
;;
将此次交易的记录加入到trade-record-one+ N. E, g: N" ^! L; g* }* {
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
! P+ J& L8 ~: z2 Rlet note (item 2 trade-record-current )
, J4 h/ T7 D+ P$ ~& J% yset trade-record-current
0 }% U- ?5 m. Y(replace-item 2 trade-record-current (item 3 trade-record-current))
6 D0 k! G/ W7 C' r
set trade-record-current7 F3 R1 R  E' ~1 X
(replace-item 3 trade-record-current note)
5 U: \3 g+ N; H$ p; G
, u) g1 G- r! e+ c( G9 H* X; b! p

! [3 x: l9 z5 b3 ]ask customer [
% D4 K, Q. G' p3 j* s, J$ s" ]update-local-reputation. k4 C; z6 t1 T+ k7 c2 p6 I" a/ ^2 U
set trade-record-current* g" l2 A- c3 }. ^' B, o
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

4 u, z+ |% E3 ?/ `) g' b]" P: x/ y& \& c% |+ D; ?# X( N

' a5 Z/ p  {( w8 D4 j. @
9 p, c! F( n# O6 [% d! x1 S* e
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
, O' H0 Q4 _/ T5 C
  ]0 _% H" \% x' |0 J
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer)); g2 _9 X9 C6 k& }  w  t5 _
;;
将此次交易的记录加入到customertrade-record-all# W. D( {; O3 l, b5 N9 m
end3 r2 Y3 L2 `9 E. l- _+ |

$ Y' @+ N: \$ p7 k, U, f- T7 cto update-local-reputation/ U+ t+ D: J' X+ M
set [trade-record-one-len] of myself length [trade-record-one] of myself
8 _( ?' U, d% t
1 z* ^; x' f$ N' `/ m, d$ U  M6 T3 Y' b7 A  h" H+ D
;;if [trade-record-one-len] of myself > 3
+ ^7 [/ X( o/ T' t
update-neighbor-total
& O3 e- [: _. \;;
更新邻居节点的数目,在此进行
4 u7 ?8 X# b2 |! d" w" K+ Plet i 3
9 a  k% g; F* u  y: h% Ilet sum-time 07 T+ o$ d, w' E) O$ `
while[i < [trade-record-one-len] of myself]2 F" M% f. u2 ?
[6 P+ x& C! N: \  i! H# l3 }
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
7 E4 p8 i+ m) x  q. S1 Xset i
6 |* o# e! q6 T1 |; _# e8 M( i + 1)
8 c/ E8 r+ t1 L0 E: h, T
]
  a, A0 e. a: s# jlet j 37 P4 C/ [/ O* _3 t# b) Y
let sum-money 0
/ A$ D6 P4 k" P0 O2 U- ]while[j < [trade-record-one-len] of myself]. k) g. t4 f% v4 `+ e) m* A
[
% X' R+ W! t2 [- ~! B6 ?& ^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)
8 q* ~( [; v& `/ W; zset j1 Q6 ]9 i# F- `7 H4 ?6 m! u
( j + 1)

% T5 S' D, h; h2 M' U+ r9 C' `]
/ l) [3 {$ a. T0 Z( M" alet k 3
' z0 ]) T4 V7 C7 F" f! w2 F; {let power 0
0 h" X6 ^, e. ?7 }6 ^& Plet local 01 m, Z7 V/ J9 a/ N' {6 Z
while [k <[trade-record-one-len] of myself]- g+ l* H4 D5 M" _6 H/ ^, U+ g3 d5 ]
[9 Z: u7 i- j% D
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)
+ I% W- z$ N3 D) W, xset k (k + 1)! i( N( i6 N3 F7 ]
]5 g7 t+ w0 ]7 G- ~" |/ {
set [local-reputation] of myself (local)1 P, x' b/ ?9 N, |/ |# o- p
end
+ y  a+ _  J; l/ c( |* F: n* j0 S/ a; K( M$ M; `
to update-neighbor-total
6 R  N% p( W" Z! A- i5 D
! t( f5 F" z& |- C" w! zif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
( s% k# }8 u: H; \+ S0 J
" J) u8 s; z& O9 q2 r3 o, i

. T- j) c! A6 S: I; Aend
" X( y1 X1 D- g$ x. q# S- g/ f4 w3 O( r; x/ h" @7 x
to update-credibility-ijl
7 r/ v  P1 U" ?* x$ Y* N$ z
' J* `$ d" {  P( `;;
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。% C, w9 ~( {/ ~0 j! L  T  X$ d
let l 0# F* ]( a0 L) Q; p) L
while[ l < people ]
: J4 K  n5 O5 \& t" j3 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# ]" N6 O" O6 [8 B5 O
[
' I. Y" \/ J2 ?% x% @% u6 p) {: Qlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)& h9 z" g8 G+ m0 b3 N, t+ c
if (trade-record-one-j-l-len > 3)# k+ |8 c4 F. b
[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
0 K0 ~6 n/ p' s1 m+ N. y1 Rlet i 3
9 d2 h! \5 k- l6 E( s+ Blet sum-time 0% B/ t( @  S9 m! z% B! o
while[i < trade-record-one-len]! O' x4 U! {" e. y7 O/ M& Q1 a
[
& g2 ?& \% O1 Kset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
6 I, V9 c$ b3 |2 R: L% y/ _  iset i4 H6 D( x3 k( c7 B
( i + 1)
' G0 I+ b8 o: j. ~1 @
]
+ _9 `7 H: I/ R( X! z2 qlet credibility-i-j-l 0
$ [; f- }" m! g4 ];;i
评价(jjl的评价)
/ H% `7 I2 _- u5 {( Elet j 31 t, p" ^% b" M" A3 c0 Z' j
let k 48 X: N% t% j! D1 J8 V
while[j < trade-record-one-len]
/ c( _' H$ `0 O4 ~8 y  c[2 U# o* f* |3 v+ E3 B9 S3 s
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
. n5 D  F0 ~, w2 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)1 X# e. y) Z! H% {1 t
set j
- O- p, q7 a" W7 x: O( j + 1)

: w# q  U6 o; \" B]$ ]6 O, w! s6 V1 _' I! v! ?) r- f! k
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 ))4 H) Q. L, p% q+ x

5 K' b3 c8 ~. X1 a" u

& h4 y7 k$ c5 mlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
# v4 [( L$ M4 b. R, [2 W;;
及时更新il的评价质量的评价
+ N9 f/ u( R7 t) U( Uset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
9 a- x7 F7 F7 n1 e( T$ zset l (l + 1)5 e0 [# o( _- W2 g: v
]) p/ D2 q) H+ s
end1 R+ U; o9 t2 h. W

" V4 B, {% ?5 ~to update-credibility-list
$ V) f6 {- Y' `9 f+ N) h0 h! C+ Dlet i 0
. H' x. u* y. c- a+ Iwhile[i < people]. r" h& c: M) d) n, R& }: p6 k
[
" @. X; b! S8 tlet j 0' k3 t; Z$ O/ {0 @2 L* \
let note 0  L7 d: a$ H, f# E" w( W# `% Q( u0 M
let k 0
  X! _! m' ^: l9 a" |1 Q;;
计作出过评价的邻居节点的数目
6 c6 \, F# ]7 j4 l0 gwhile[j < people]) {6 M0 |6 m) ?+ V. b3 P
[
  v! ^) B' J. S) Y& Z3 fif (item j( [credibility] of turtle (i + 1)) != -1)6 D) ]" [' T' |. q, ]( t
;;
判断是否给本turtle的评价质量做出过评价的节点
+ t" F- v/ a4 C9 Y7 ^! e4 i[set note (note + item j ([credibility]of turtle (i + 1)))2 p. s; X9 s, y5 E# I/ ^
;;*(exp (-(people - 2)))/(people - 2))]

0 m! p$ w) y9 b: Z+ Y" Z7 T9 ]set k (k + 1)4 f7 T1 V" w) U0 \& a
]! l# K9 D3 z3 {7 L
set j (j + 1)
9 I3 b8 ?: b* I( l1 }! ^* d]$ D+ ^0 F5 p7 i' U
set note (note *(exp (- (1 / k)))/ k)' f. E' B$ l6 q0 Y2 W
set credibility-list (replace-item i credibility-list note)
  u( o/ @7 `! j, y: {set i (i + 1)3 L' ]. e1 d5 R/ D( B; {( Q" K6 M
]" S  e* c* b+ y7 e# n4 L, v! L
end& Z$ k. t% Z1 w  q9 l
# B) p3 V8 y  h/ h4 F" z  x: g
to update-global-reputation-list/ H$ x: b, t4 G  q, |
let j 0# a; O! X# J$ M1 H  h( K3 G8 I" K+ U
while[j < people]
% c# K) s* M) z' @[3 X  s0 e3 K5 U6 J7 o. \
let new 0
8 g$ j" Y) O! B) o, ?: Z& S;;
暂存新的一个全局声誉5 d+ Q3 w. |( u
let i 0
! X$ D: u3 ^! Y! S# O+ y; Xlet sum-money 0
4 g* J2 O! Q/ k, v! ]2 p$ Vlet credibility-money 0
% |& E9 j( h) M" S4 Y. Lwhile [i < people]$ s7 K* F1 q# l) m$ C4 V3 M% e
[7 j1 z; l0 Y0 L3 U; p/ ^
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))- @7 x/ f- \) e) z& `* j8 D
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
' O$ w7 g0 O5 l1 P" b* Cset i (i + 1)5 k+ z2 A# ?  [( C; c0 i
]! \, c* U) _6 N8 j, U3 W" V: m
let k 06 b, c* P. G/ i
let new1 0
; U1 ~6 N' y1 `, o( Jwhile [k < people]
- b1 k- l; |6 Z5 }, Q! t* {+ ?[4 p: Q  Q* p3 g
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)5 N0 b$ ]* X/ y1 U
set k (k + 1), v5 u: p* o, C! [* G: e% E
]/ D" L% M' V/ W
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
% y% z% z- P/ Y- ?! {4 P. ?set global-reputation-list (replace-item j global-reputation-list new)$ X* |4 ~5 z/ i! N. l+ m
set j (j + 1)
( S  N- ]7 X* z; g; U1 N/ Z]4 V$ N" v2 L- {+ I) d) f
end- a; ?& d6 W" G0 k" j
- g4 v4 \7 E( @7 i

) C9 i8 J  O/ ]) _# w3 \* P. e3 f: N) t" L" i) F
to get-color
' t! t4 N* n9 y+ S3 J8 _
. z. B( ~4 R2 ~# R. R9 ^5 H* Nset color blue
  W# {% [+ A, w# q( K! s8 c
end
3 c4 J. M' Z8 z9 S+ B0 E8 B' x& W$ X# D" q/ R4 A
to poll-class
; y# D) z$ X+ n& y' Hend  D; }9 i  {  f7 v9 i* E& J0 i

$ B* _! Y7 ^7 Zto setup-plot1
3 a, ?- L' i# b" U
: r& g7 N/ h0 J3 B; c, _4 h5 Eset-current-plot "Trends-of-Local-reputation"
2 f$ T$ Z) g- q$ P" ]* [  b

+ \# v8 Y" R1 ^' y4 s8 iset-plot-x-range 0 xmax
7 i4 L4 I! y# M0 F: ~4 v' w" s
/ t6 x: I- d* ]* l7 V3 D
set-plot-y-range 0.0 ymax

! [. m5 h2 C& l2 Iend* C6 S' L# R, k7 s$ a! p( q9 J4 |
) x8 s% d! _7 A+ `# \: f/ g
to setup-plot2' o9 S9 O$ @& z$ @- x

/ b% J5 U: K. u8 z+ r: v: b+ l0 D  n" jset-current-plot "Trends-of-global-reputation"

4 L# G+ d- M' M& t  I) \- Q( P
* v# u0 T$ q, Vset-plot-x-range 0 xmax
3 Q1 T4 `7 m! U
' e- P1 M& w+ j: z3 v0 a
set-plot-y-range 0.0 ymax

9 E. p, T2 y3 z/ B- I( lend
: _8 q: V- r$ \+ z1 D- R  p& |/ ^
4 V3 n/ s; v9 n. `5 P2 Tto setup-plot3' z* y0 [4 p0 C
0 [9 i! [2 _9 f7 C$ x4 }
set-current-plot "Trends-of-credibility"
( x- g  j/ [9 [2 m# }& f$ [' H

2 S- |( I7 z1 c: \set-plot-x-range 0 xmax

& ^3 T0 w9 t0 T( M7 @, `4 v: |0 ?  S- d  m
set-plot-y-range 0.0 ymax
( b; L- c# k( I1 B2 Y1 p+ m
end6 N$ H9 E& N1 B, V( v
" k. N* U" j2 q6 P) H
to do-plots
( R' i0 Y  [/ z$ qset-current-plot "Trends-of-Local-reputation"5 V* t9 J( M/ }. L. d! Y
set-current-plot-pen "Honest service"' u: `& Z$ g0 u# a# i
end
" Z! h/ F' J7 ]6 U# G3 K; ]% y$ Q
; j9 s% o1 ?* J[ 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.
6 |' g& y# \8 f- `
' O$ n. l" {$ M3 z* e. k, d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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