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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:
* q5 M  I7 r2 ]$ }. f9 F( mto do-business 6 E& o0 {# e5 u% M8 z
rt random 360
6 Y3 v" ~& y6 Z) V; \0 _: e& B. x. q fd 1
$ H9 a2 [. m* J6 O ifelse(other turtles-here != nobody)[
; r( }' D6 a* a: x8 e   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.
: g7 y* R8 w" M7 K   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    3 ~9 ]: i; s" H+ S- K- E3 C7 K+ w) I
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer1 B7 O, L9 V, A+ e; f' H" g' D
   set [trade-record-one-len] of self length [trade-record-one] of self
7 Q: T4 Z1 c8 N, d   set trade-record-current( list (timer) (random money-upper-limit))' G8 {5 c1 X& e& Y: L* Y/ d- W
6 f7 o4 P9 T% z
问题的提示如下:
- K) L  ?- X2 Y
/ s# k- m6 F  m; M! D9 \% f( s, Terror while turtle 50 running OF in procedure DO-BUSINESS; p6 c, Q$ e  w2 j& j
  called by procedure GO
/ Z. O/ a" v% mOF expected input to be a turtle agentset or turtle but got NOBODY instead.
6 g& X: O4 S8 F0 q4 n+ Y  Y! u
(halted running of go)& S4 [, ]+ q# t
4 }# n8 U$ Y" p4 e
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~~& N9 H( q: I  q- `4 L
另外,我用([who] of customer)来获取turtle的编号的方法对的吗?如  set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    中.

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发表于 2008-3-17 17:34:20 | 显示全部楼层

资料不全

你把你的所有程序传上来我看一下,估计不是大问题。(南京大学)
 楼主| 发表于 2008-3-18 13:10:54 | 显示全部楼层
你好,这是我现在正在写着的程序,以上问题就在其中,请多指教
, V6 _7 Q7 X8 lglobals[
2 f2 \* u% G) I' Bxmax+ a; B- q( z& Q  Z0 C
ymax3 F! F: i7 w! b& Q
global-reputation-list  S" r* ~3 h2 o8 i
7 ]3 G" j, P2 E  h. J* |8 o
;;
每一个turtle的全局声誉都存在此LIST
+ a* M8 n) ?" z, zcredibility-list
- O4 D1 ]& `0 U5 t0 d& C;;
每一个turtle的评价可信度, h0 r. Z: z, ?- P& D# }: N4 u
honest-service3 x1 G% Z/ I/ ?: U1 @$ h6 B
unhonest-service
: ?, l- T% U: P7 @' Yoscillation' G* {; c0 J! X( C+ Z
rand-dynamic# k* Y8 H3 ^/ h1 m+ {+ v* M* q
]0 o' f8 E/ I3 `# A4 d

% }% C1 W. N; h8 n# R% @7 zturtles-own[
. J) e- h! Y+ F, `  Q" Ctrade-record-all
8 V" x  a: h6 H* {2 t4 u;;a list of lists,
trade-record-one组成1 T2 Y. t( P+ K" @; @( T. P& Q4 G
trade-record-one
5 q# c( V  B4 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
' X' f5 z: T" H  `6 ~
( u% {6 X* X3 S! I( r;;[
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 o8 T2 w. n* t% ^9 T9 v+ V6 c) o
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]; K$ A6 l0 |4 j! w: t  Z, `- v, O6 k3 ?
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
! I7 K/ e& _6 V9 X8 bneighbor-total8 v3 `( P: k/ q0 ]% F
;;
记录该turtle的邻居节点的数目
5 {7 X. r, W  E0 w" r$ h/ H2 v; Dtrade-time2 k( X2 }' @( g) X. ~
;;
当前发生交易的turtle的交易时间
3 N7 c; n3 e4 Z" Rappraise-give' w/ k9 e# Y% V; s* M: a. h+ Q
;;
当前发生交易时给出的评价
$ ?( F% Z6 u. y. ?; H6 jappraise-receive
+ ^! R% }+ ~: g, m6 `$ |;;
当前发生交易时收到的评价/ ]% e6 Z+ ?: X+ E6 T
appraise-time' I. `" u: R# f9 O% ^% N5 Q* U
;;
当前发生交易时的评价时间
- m! L% t; t' r: z- X) t0 ylocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
2 v- [  Y. \. L  K# s1 qtrade-times-total
/ }- i5 S/ F& M3 W8 R4 \( {- N- G* x;;
与当前turtle的交易总次数
: H# @" G  c/ P' Ptrade-money-total
0 {, v0 q4 J! I# i5 n;;
与当前turtle的交易总金额
- K1 R4 K6 u- j9 A( @" E- Wlocal-reputation" {4 y" u$ N$ _
global-reputation3 v; c) Y, }, r4 u( W
credibility
3 _6 ~" U8 x& [2 P( H0 \$ u;;
评价可信度,每次交易后都需要更新9 a; A* t  g( F# a/ r
credibility-all
/ M  T( R# N& B8 A/ ^;;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
& g7 M1 e$ k8 n: a
: c6 B/ s$ [' l: ^) q5 c;;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 S) {8 R" ^6 t& ?* D! l  ^9 pcredibility-one
' c0 t$ D8 I. I' l) u;;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* i) E- a. ~, N4 t8 m4 J: T& r# @
global-proportion
' O/ F$ l% D* R: I. lcustomer
: Y3 f; o( Z, r( o$ M2 U( R9 Gcustomer-no
3 t; R% i0 C  U3 `" s2 qtrust-ok
! S+ p0 m4 S/ U8 @. Y& k$ n2 d, etrade-record-one-len;;trade-record-one的长度: O8 q2 l( m: b
]
$ J, O9 v% _5 l
5 ^" x# N: r! m- I! o;;setup procedure
3 V4 m" `4 r" i3 c) n6 a  J* Z
! d! i# n4 i% q. Nto setup+ D  s3 H8 K3 Y& f9 b  G
* ?4 \2 G5 w' ]* x( m" l5 g4 Z$ V
ca

6 s, M0 E$ @' o, \( l1 r
. j3 A4 p3 b5 Winitialize-settings

/ D/ b* C" a* h( a3 d/ H; V7 l% `
: t- W# t6 |, ?! K0 _crt people [setup-turtles]
" W) k6 J, C- k/ ]* @  q! l
: @' O# ~9 u. e. V* w9 X
reset-timer
/ t7 L, g5 F9 r3 @" g9 q

% Z. C- F3 O. u+ E7 \, F* Z3 g# Tpoll-class
, l5 P  z. R* D# t  m" d/ n2 S0 |
+ N, B8 R. |* v) P% H8 m% p
setup-plots
; X7 H' H! N5 @% L  n
# i5 z5 ~: q0 s
do-plots
) {# r& D* e$ [; o2 T' E
end, R% Z7 s, C0 w
8 V( O4 W* ]7 a9 A
to initialize-settings
* ?3 [1 J; Z& H" J# y. O
+ W5 V# w6 `( Gset global-reputation-list []
- i8 x7 r) [/ L" c- a0 Y) K

, _2 O1 m0 x8 u4 y9 ]7 Pset credibility-list n-values people [0.5]

2 ~0 W8 P- A, q1 c& _8 A6 P* P; p1 T( \) e4 J0 D3 X
set honest-service 0
7 I3 j  Y$ f2 t8 P
1 i5 ]9 K4 I6 J& `" i- }0 K" k
set unhonest-service 0
/ R  B: Y- E/ f2 w
: p$ s+ u& k0 w
set oscillation 0
' `; D* J9 a+ N4 u3 C

5 I- e' G  N5 p/ z/ Y- \4 D6 ?set rand-dynamic 0

- s+ z' x: U0 |/ V6 f0 E0 C  Yend
' F& M  j" S2 _9 G! ~$ K6 ^, u* w* c% a" l8 {
to setup-turtles / Q8 W. x' Y" T+ }
set shape "person"
! O4 o+ b# Q/ u* g7 ?- c, W  w+ x* Isetxy random-xcor random-ycor$ T, E% }6 @' @! p' y
set trade-record-one []
  ], O# G" g9 Y, E4 Z6 p# e* n; L/ o

. o; B, X: z- Zset trade-record-all n-values people [(list (? + 1) 0 0)]
9 p; ]6 H* d* f
  C. r. }6 Q- s9 W. C3 \. @
set trade-record-current [], B2 k: L; |) @5 P0 ]1 {6 y! n' B
set credibility-receive []/ J. y9 R6 L' Y4 \+ V) u2 c0 d& C
set local-reputation 0.5
& q$ }$ y0 u) Aset neighbor-total 0; Z, O3 d# `6 t
set trade-times-total 0$ y4 c0 b/ ^+ N8 u. ]* b
set trade-money-total 0
4 q% S- A7 R- a1 k/ B- fset customer nobody9 a) O& S3 ~" A! Z( y( G
set credibility-all n-values people [creat-credibility]
* v  z+ L. c8 N: q! E! ^set credibility n-values people [-1]; e3 L! D# v: X" T
get-color2 s2 W2 W% y' {1 p. z6 A/ f

; ?6 p" f% z( E* E) aend9 j4 ]% e2 c. V  U
5 v2 `; v$ P9 T8 E7 \
to-report creat-credibility, k+ E4 T6 H! n9 I# ?: Z
report n-values people [0.5]
4 {7 k$ m5 j/ v. s% ]end7 H. M& m* b9 W( Q7 b

0 y- i. R7 R" A* q5 l$ Uto setup-plots
: D; H4 B7 P& M; O1 V" W# p, ^0 i5 K, T
! i/ H5 f# e+ J. {# ]; Y1 A& [set xmax 30

' F. H0 `0 O7 k) V
. d: M0 r3 [" n2 eset ymax 1.0

6 J* F# s1 D- A1 C! L" F" p; p" f7 V' `8 G, {3 k% M0 n
clear-all-plots

- G4 a: a2 D( s4 f
# T( O3 [' P, h# Ssetup-plot1

% m4 S, c- L% a' X9 v
1 z" ^* o" _& A) esetup-plot2

- B9 {5 o+ j$ W' q) O7 M4 [( K: u' l3 k1 h0 N, r  l
setup-plot3

0 V+ S6 C1 j: e* T) x8 X) Bend0 c8 o+ l- D9 P/ k, L
- ?1 E) q" H4 k0 m& p! l
;;run time procedures9 L0 j+ k4 l5 E# `; {

# X2 p# u8 N  oto go, m- ~0 f" w6 p2 q/ e- ~4 J* v- ]% ?

; p- ^1 ^, Q: P: t9 jask turtles [do-business]
4 r5 }0 Y$ ?8 _* t* I! x
end& S2 N4 m* v  W( W  D  ~3 o

! N! i% Q' `' vto do-business
! V+ D) c7 I8 a4 x9 R' [
1 w0 X0 w) J0 ~
+ \% E; y! D6 k& j  T1 P# R
rt random 360
. T2 e; _7 w* W5 b
% Q. k4 `1 `0 `- H
fd 1

, _7 F: e% |; A) j- L9 o  f1 s' W( v% ^
ifelse(other turtles-here != nobody)[
& F$ @9 x( t" {1 q3 `
% x" b& J+ f$ h- q. o! a
set customer one-of other turtles-here
! v9 I3 j4 Z/ A) G+ `
9 B5 L$ Q! Q/ H" {6 t
;; set [customer] of customer myself

; s- \% r. J, \- i) F5 D# C; h  y% _& g% B- a
set [trade-record-one] of self item (([who] of customer) - 1)
* a$ K7 f2 u+ }2 |7 S[trade-record-all]of self; H9 D/ B( J5 h) ^
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
8 \! {8 R3 m( r9 E. K6 d, G

, q# _' ]* p7 h' c8 K0 Gset [trade-record-one] of customer item (([who] of self) - 1)1 P8 ^" b& \% Z. T+ K
[trade-record-all]of customer

) y5 B" z6 P* d, |! B0 f5 s# F
( t- I5 c, t2 }" ^6 p! q7 _+ Oset [trade-record-one-len] of self length [trade-record-one] of self

2 w3 V# M7 H4 A: j* x* c$ }0 Q" o, J7 h0 H0 q
set trade-record-current( list (timer) (random money-upper-limit))

, }9 `& F3 t6 k$ |7 P
. ^+ \& {. M9 F6 {ask self [do-trust]% e' {2 k! {* l0 }9 ]
;;
先求ij的信任度
9 \) x4 c; w: E' S# \( Q' Z+ L4 F2 {
if ([trust-ok] of self)/ O1 L+ w2 }  I- }
;;
根据ij的信任度来决定是否与j进行交易[, N4 {) R0 h" U7 z/ q; w9 T+ \/ Z
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself, B) {# @% q$ K! k
) C+ n6 {  y% C2 |, s
[

" r: Q' B  m( x& b* Z  R
" r" n; U. X4 mdo-trade
: w. e% g& I! ]& e

) @9 [% \7 T6 b3 b5 a' zupdate-credibility-ijl

+ S  _8 i$ h' U  }5 a7 N# U( d' _: j; U
/ u$ m- ^' t) G# C2 a2 d$ Zupdate-credibility-list' n  a3 z8 j7 V

( O" Y1 w' V8 [9 H% q. K% I" d! X4 Z. Z
# C+ C7 |  L% G% Y; F  Wupdate-global-reputation-list
* `9 J4 I3 E3 ~1 ], R% s- t: [
- S! b/ A0 N+ i! \
poll-class
( v) E, m9 a% U) ^
3 }! W7 Z$ w! N& [1 w; U
get-color

! U* P) M' n4 J0 S: D# L6 f0 }
+ y7 o# l3 Z0 l, G- Q3 b3 ?8 M]]
9 Y9 @+ V; n+ G# m: U
: e+ j$ y. t! G/ b;;
如果所得的信任度满足条件,则进行交易- g  @7 D7 T" ^
- ^* P+ k7 ~4 K" M! C) A
[
: C, c5 @; M0 A# j, z5 o

2 J! `5 u( i5 P: ~/ R3 ~rt random 360

( R! a9 W, g# C
, ?+ t7 Z' T  D, n! x3 Hfd 1
8 z1 {4 T7 d5 D: V/ v1 z: v9 \5 Q

) u/ X' I% S9 `]

2 l7 o) ^, a- b6 ~& }; q+ {
/ z. M4 t3 _+ ~, zend

1 e2 g/ \3 |% Q/ u, ?" n" B; p3 h' e3 O7 g4 ~! {7 S+ ]
to do-trust
5 F/ d. ^. J) E: \set trust-ok False; g* b8 f, ^4 J% Q  W8 G

5 c2 X! s5 C7 D
! p; v6 q7 b8 W1 a$ f9 G5 j! K* x  U1 ^% Y
let max-trade-times 0. a/ B' U2 j; p" r0 X# X+ g9 |
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
5 L% f0 P$ t4 J, nlet max-trade-money 0
- d. {" {. S" ?# w: F* eforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
/ M, c- q; @% z0 ~let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
# F9 o4 D* G: s; y" V1 M! O: m
8 F$ Z- g( v- S* A
  J- U! ~+ H/ {6 {
get-global-proportion
. j  q, N( m" e0 j# L7 nlet trust-value
8 d% B! i2 F  |; _( |5 |3 ]+ {& Hlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
3 R/ ]8 [3 Y+ t6 k
if(trust-value > trade-trust-value): s0 s# P! K5 A% H9 t
[set trust-ok true]
* p# K: k/ @+ `9 I) G' F9 v8 send! T  z: |$ u$ h2 Y3 b
4 C" a! r1 o! O5 s. K
to get-global-proportion* r% g- N9 `" `8 V
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
4 c7 f) \5 j9 G( |# h! O0 w[set global-proportion 0]
7 y) N8 Z! ]+ f) |2 B: U$ u/ g/ b[let i 04 N1 l  J  _2 |) G
let sum-money 0/ p) ]) X, N% e' e8 r
while[ i < people]8 D2 e* j: }) j- E9 E( E
[. ^) f3 M' \9 n
if( length (item i0 s3 R' N, F' ?1 D. U, \+ T
[trade-record-all] of customer) > 3 )
5 _3 z+ N6 i* c- K
[
, @. C$ s* V) K$ Y6 Iset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
: ?* F( A9 Z6 n1 D4 g3 C/ Y]: V4 x+ F9 G% z3 w8 m. ?
]+ l( \7 t3 Y; g+ C
let j 0
5 Q3 e! ]. w% y5 B* Y; N6 d9 i. Olet note 0$ G+ T0 F# r+ @' k, w5 |
while[ j < people]/ R  V  E/ }. A* [; A9 `7 w$ u5 ~
[
0 l6 J- A9 T5 g3 S  m; R# z6 Gif( length (item i, H$ A& G- X- }6 U8 k$ {
[trade-record-all] of customer) > 3 )
' S* G- v7 _& d/ H
[
9 O* Z1 O; U( g4 R) _# V# H2 {/ ]ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)3 G( H9 j% e+ ^! t! I/ P
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]/ l- u6 e/ N1 Z0 M/ W! |; z& U
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
7 t- {4 w, w1 v3 v]: r, ~/ `- ?6 d9 J- f0 _
]& W. Q, ?& G, g9 E! @
set global-proportion note
0 Z  z) k, N- w& ~& ]; a]
5 ]8 p+ l4 E) j0 q1 ]' |: gend
: Y& F  o- o$ F2 v% D5 [" p# n, h) p/ }
to do-trade
& @5 ?( s' }4 d;;
这个过程实际上是给双方作出评价的过程
. C; ?* [' Z/ H1 Vset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价8 {3 g) g* k/ |( |
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
! w5 }7 g4 a" U/ H! wset trade-record-current lput(timer) trade-record-current# h6 F0 f# C9 X
;;
评价时间
2 [* ]7 V4 C7 Fask myself [
3 F$ M: P! c% m* F" e8 q, N8 iupdate-local-reputation3 v, i) S9 Q# w0 v6 q
set trade-record-current lput([local-reputation] of myself) trade-record-current( @7 d+ W$ w9 p- b
]
' t/ H. H' y5 a( [8 Yset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
7 d; j6 k$ h; o) J7 `;;
将此次交易的记录加入到trade-record-one1 X# S! i( N% t- T3 M& L
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)" q+ o4 T; t1 x, m+ M
let note (item 2 trade-record-current )
; n  d. t/ t5 g) q- B# |set trade-record-current
$ z' ~) D& {1 o, J( T* q5 V(replace-item 2 trade-record-current (item 3 trade-record-current))
- J% {9 s% O0 T+ U' f0 Y* M( m
set trade-record-current8 w! L" M6 H  V
(replace-item 3 trade-record-current note)5 W8 `: h" i. g0 j/ T. y

4 |9 X3 @: m0 n  l" R/ i% r
9 N* R5 g1 y. M' M
ask customer [
0 H$ t4 V9 x2 qupdate-local-reputation
. E( v0 b: a8 \: L1 J5 p! l5 Eset trade-record-current9 _% C# Q. R( Y2 ?
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

( l2 R  l7 r* t- J+ ?$ K+ U]
: v0 ]8 M9 U: h! Z  u5 [6 ]" M6 v# R$ y2 y$ D8 F- r7 ]8 J
! M3 ^3 t$ P0 s+ V
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
8 }7 w- L, b5 t  M$ X% X+ Z- X- i
% x8 M1 w1 I; u! M4 M" T4 D+ K
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
; {& d' |- _3 A% S;;
将此次交易的记录加入到customertrade-record-all
/ N& \5 K& [! {6 l% m+ b6 rend
" ]  w1 `7 H% O  L" X
- D, O7 |: @0 K9 v2 x. h" `4 B7 g, Vto update-local-reputation
- I6 P0 p+ {( n9 uset [trade-record-one-len] of myself length [trade-record-one] of myself
* c2 ^& u/ S; y& ~8 ?7 N) S: k. F3 K6 U# R2 j9 t- u) G' e8 i

8 C# _- A. t: O! c;;if [trade-record-one-len] of myself > 3

' @" X2 ~4 F* [+ Q: [: wupdate-neighbor-total3 f" f" V9 c1 ~4 Q1 z0 J" j
;;
更新邻居节点的数目,在此进行) Q5 G4 V# }/ D0 R7 z' [
let i 3
2 U( W( \- |! p$ Nlet sum-time 03 v. Y! J/ ]2 W" m1 @
while[i < [trade-record-one-len] of myself]
* z/ p- N( q$ d& N# s% K[
/ ?5 u- z9 n' I& ~# Sset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
5 f9 a( l9 j( v% Iset i
% B+ Y$ A8 s& y$ _7 ~4 M( i + 1)
- i0 @4 S5 S- e% Q" D8 n+ x
]7 h- ~( m( X, k! O9 @
let j 3
3 ]2 U5 v4 o9 _8 O5 F: `: o) N5 flet sum-money 0
! V; j4 d/ i- m, O; M$ @1 T/ ]; swhile[j < [trade-record-one-len] of myself]
/ F3 R# b, ^# V1 b[
' A" _; s' ~6 D+ M4 T7 ^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 G1 s" s# o+ P/ q8 g; h2 _0 P7 O
set j
) \! U( ~( L0 d; a+ \& q/ o  w, C/ @- \( j + 1)
2 B; _, e/ C% {$ ~5 n) N/ R
]
9 ?- |/ D/ |1 h2 @  Jlet k 3
" x6 K3 _) |$ v# Z5 n- k' i3 hlet power 0
% d2 p9 p; g# h1 Y  w; S. J8 P# ^let local 0
5 R7 Z* L- e9 j5 F7 D. [) X6 Xwhile [k <[trade-record-one-len] of myself]  n. V* i8 z9 U, P' d
[
' r  w2 ]4 D4 ^9 J2 ^( Xset 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 h7 n& q) P2 S0 rset k (k + 1)7 Q9 H# \& W6 D+ y( U: j) o( \
]5 Z7 ~6 A% e2 z0 `  V' w
set [local-reputation] of myself (local)! [* L2 Q8 {3 O: N* v1 P
end# a1 T" z5 F! ]& g( g) P5 l# P

3 ^8 [0 V* W/ k# i5 R; h5 xto update-neighbor-total! y5 H" ?& Z' V7 M% {- o" v8 c# [

+ `( J9 m9 K) ]+ u& i' P  n" [5 w: Z9 Uif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]3 |+ h  t- i2 Y: d3 n& _

- r  j( p/ `6 m$ T
- B. p9 T  z- D4 ]1 k1 c, D8 e
end0 ]8 b! |, {* N
3 w, q) ?0 v4 {6 h
to update-credibility-ijl " H/ X+ Q: @' m3 B: C& u- j9 Q, u
$ X& T  J5 [' \9 e) [9 ~3 o4 q4 c
;;
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。
' r! `) }/ ^% W! w; `$ ?( D0 ?% d% Xlet l 0
2 ?6 w9 `6 a4 a& Q) w1 uwhile[ l < people ]
8 [! ]9 {- B' I: E;;
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
% Z2 u- F6 E8 T9 A[
. X. }1 {  {& Alet trade-record-one-j-l-len length item l ([trade-record-all] of customer)$ j. O& B6 r; p4 B6 b. U
if (trade-record-one-j-l-len > 3)
6 E4 N$ X5 C& c8 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-one+ ?$ f& o$ E9 G' T" @; q6 z, B. w
let i 3
. l6 j( Z- K- N5 i6 h4 ]0 Alet sum-time 0
$ F: U$ V6 F, B1 x: ?7 O9 Swhile[i < trade-record-one-len]
7 W/ L% G- H* ]+ y% J0 W; Q0 O[: d! \( m$ M  M
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
7 c0 g5 c& Z. J, I. t* |- iset i
- D8 A2 j: P. J( i + 1)

- \4 E: v1 F1 p. e$ b% S, e% M]
" V( p3 ^$ q/ x$ P, F* u+ @let credibility-i-j-l 0
0 H4 I- I0 I4 |( e$ y! h) r;;i
评价(jjl的评价)
- H, @0 f7 Y& b5 ?4 s# ~let j 3* h3 w  K3 W9 o- ~# \
let k 4
5 \6 F, h2 H) P+ ^* V5 s# lwhile[j < trade-record-one-len]
5 n+ c- v1 a3 J  ?9 r; _* d8 Z6 g[
( h% Y: l. k* t4 G- owhile [((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- C: e- \8 h, M- |- e3 W9 K
set credibility-i-j-l ( credibility-i-j-l + (item 4(item j [trade-record-one] of myself)) * (1 - abs ((item 3(item j [trade-record-one] of myself)) - item 5 (item k trade-record-one-j-l) ) )/ sum-time)
' ^- ^/ X, V4 Y3 ?' U* o' Q1 tset j
, S$ K/ Y9 o4 z3 a" f- L' D- d( j + 1)
7 {3 x  h- E, U! u  B! A
]
* K0 o& a$ H+ o# f, Pset [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 ))
) \, r/ Z# j( c3 ]- _( }( ^  R9 E/ j; d( E
6 n, x, r; v0 E# V; k6 c& t
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
+ I: ]7 o! n+ S4 P6 l& N# a3 |;;
及时更新il的评价质量的评价
) _9 P" h; v3 _. a3 wset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
1 o* J' ]1 O& M# A4 o( G5 d2 Fset l (l + 1)
" k2 T! b% P2 S% i]5 `% ]% z+ s# p3 U( x. N0 p
end
2 C# i, L9 E+ B, c" }/ F5 n4 ]9 A  e7 |$ G
to update-credibility-list/ n5 q/ n6 d  b& c
let i 0
6 m* E' z. ^0 C3 J+ H: n: q7 A# Zwhile[i < people]5 Q$ F+ m. o/ l* T5 y& s( S+ R! o
[2 U- Q  v* B+ g: |/ S+ v2 \9 z5 @/ R
let j 0
+ g  W3 ]: G, h6 Slet note 0
7 C; A( Z4 S& M+ P. ?3 X: glet k 0& q/ F7 ], |. Y6 C- Q6 T5 J
;;
计作出过评价的邻居节点的数目
1 Q5 E- Y8 c$ B- d2 f* G, Xwhile[j < people]
3 b2 b' k& z. j5 r$ M, w[
1 l  \8 p  W  E: `- h2 oif (item j( [credibility] of turtle (i + 1)) != -1)
+ F) ^6 w* B1 l- V;;
判断是否给本turtle的评价质量做出过评价的节点: F) G& s9 d# f; o5 l, s2 _
[set note (note + item j ([credibility]of turtle (i + 1)))1 A! p7 B, q4 N' k) a
;;*(exp (-(people - 2)))/(people - 2))]
7 V8 Y+ T, ]7 Q1 Q: B- [0 S6 \  i
set k (k + 1)% s  {$ n, S% o2 ]" p1 {2 ?
]
$ m: i, C% j7 h1 a. e; R  L% Fset j (j + 1)
) C. q' {$ ^& e: S( G, R]8 g; D: i5 s- `7 o* E
set note (note *(exp (- (1 / k)))/ k)3 {& g3 d: A  V' [- n' L
set credibility-list (replace-item i credibility-list note)
) u8 v& c+ b  K: L$ hset i (i + 1)
! }$ }2 ]& s# t# B]& l# q( }% L3 `
end
0 C, P( C# g3 g- J, n8 u+ J# y
) W, a7 r; P0 l/ W% N8 ^4 a" Uto update-global-reputation-list
  u  S2 R* c% A! Z" A5 _let j 0
+ ~" b. @; m% V, [' i: t. f3 l8 B7 hwhile[j < people]
; W, m3 m) K5 `6 c2 I[
8 A3 J& H. W, v4 O! R7 X* C( ]$ Qlet new 0
7 w9 F1 [1 S3 ~4 M1 M  z8 \;;
暂存新的一个全局声誉
: W7 D- E% U2 Z- flet i 0
# h4 v2 l# A- R4 G# ]5 l: Q9 `7 slet sum-money 0
0 U* q$ [1 H6 G, M1 hlet credibility-money 0
0 }$ n- D; f) j6 ^' X. ~6 s6 rwhile [i < people]! N, E: |$ d/ C+ ^
[
1 p  O3 S/ ]5 p: Q" }set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
; w8 Y4 R: g5 L% w" n% u# p7 Sset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))1 I8 G& S1 y  ^+ e- x( ^5 v
set i (i + 1). G. e3 R& {& H2 k
]
3 b( l" l  P. j3 Ulet k 0
, {9 T/ y, q+ jlet new1 05 {5 d# T/ ?) a+ j) K) P" Q
while [k < people]% y& O* V$ V7 Q. I7 x9 g
[; P8 A  ^) _& V9 g/ ^1 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)0 ?4 @0 s: I' ?3 ?9 t3 Y$ v- q
set k (k + 1)% B" l' x( X& F- P& d2 W
]7 B$ U2 K' J: V* S' c# F  N$ V5 O
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
; ^! k& g$ D' T# b; Aset global-reputation-list (replace-item j global-reputation-list new)8 L* `' H& X3 J. Y
set j (j + 1)  U  M" x9 B6 a5 J* B7 y  R
]# x$ ]- V5 f7 h: y7 m; I
end
) K0 \) z" m& a5 `1 s2 ~% @2 P/ r
) E- J$ z3 ^9 h; p8 W

/ r& f0 y/ D" A. X2 ]# w: n, Wto get-color
6 N* H$ `0 E7 X! ~$ Z' j7 e( ?( i) a" I1 F
set color blue
1 R# x: y- i! h
end( `; B, D8 u3 r" n
; l) ~4 h3 y/ s& B; z
to poll-class$ u0 _9 `4 l& b4 g' l9 _$ k
end
& B" q/ s1 U2 p4 d5 w: f
" p# z/ [3 H' U5 @% K$ j0 Mto setup-plot1- G' F; L8 J5 U4 F3 C# s# |- k* P& P

0 g2 q9 y. [; r* Y0 ?set-current-plot "Trends-of-Local-reputation"
, w: {/ D2 M# h

) B& a$ {  Z+ z& I- _# @set-plot-x-range 0 xmax
" `7 |2 U9 N* U9 l
" j; ], S* y+ f, {. z6 T
set-plot-y-range 0.0 ymax
3 c- _! F% m5 s3 V
end/ l4 u  g& Q% p5 x
) j$ w  e: {, e+ C' L
to setup-plot2* w! x$ V, ~- t, P4 ~

& y  ?+ n/ Z- Yset-current-plot "Trends-of-global-reputation"

6 u# J8 s4 l7 X, n7 |% `# `: d
set-plot-x-range 0 xmax

* y  o+ M: [" ]4 u" g2 |! U/ Z1 N/ @1 i- N
set-plot-y-range 0.0 ymax
) k% H% R+ d8 X4 p" c# r2 n
end/ R. z1 ^; Y& Q1 ?; [. W/ j* W$ x9 ?2 ~
" \9 Y0 h7 s* V& u" i+ s
to setup-plot3' {: t3 l2 T6 I1 n0 w. `# B
/ |% [( q6 F! W
set-current-plot "Trends-of-credibility"
0 Q# B0 c0 p5 T3 V1 ?% I: q
4 ?0 Q9 g0 t+ s" }3 d
set-plot-x-range 0 xmax

9 H8 u, L  Q# X% l6 \5 Y  W" n, L: R& d! m
set-plot-y-range 0.0 ymax

# P) Q5 j) a8 r7 l1 O* Z+ ~end# p, o. w- t- o) [4 Z0 |( ~; I

  S8 j( F1 F, t# z6 L5 S- fto do-plots
6 _7 N* o; V" h& Q/ X1 v8 h, Tset-current-plot "Trends-of-Local-reputation"
& n/ X) @8 _* `0 P/ ?/ g8 X8 jset-current-plot-pen "Honest service"1 d2 u; f) @, [
end9 l4 Y3 \& ^6 @( j' K2 M8 `

2 @/ |% p/ |" P" f[ 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.
) K9 v8 P( |% t  h
7 j* D/ y3 c! k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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