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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:) g" ^$ S- x  f& |" l
to do-business
5 D+ M2 @* O' U' H& n, S3 |5 p- ` rt random 360- I9 h$ c; b" Y% q; B' W
fd 1+ c( C- z; h1 [  t* ?
ifelse(other turtles-here != nobody)[
( A9 _5 E+ B/ n   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.
/ h9 I/ C" O; ?: I$ f   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self      t% _2 e1 a8 L. Y( X
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
0 P* s0 ^3 I% V   set [trade-record-one-len] of self length [trade-record-one] of self0 p! F$ D1 R! r7 R
   set trade-record-current( list (timer) (random money-upper-limit))- z, G8 h3 U) Q) c7 q! f
( ~/ R. a0 q; s- m" l* J6 N  }' S
问题的提示如下:
0 Y. n" K4 S* z& N2 Q+ O1 J, r  y5 W8 q- I
error while turtle 50 running OF in procedure DO-BUSINESS! d7 I2 k, h0 Q6 ~
  called by procedure GO
" V; D2 P: s, Y) @OF expected input to be a turtle agentset or turtle but got NOBODY instead.
' Z. Q. ^( Q. i/ L2 Q
(halted running of go)2 |2 A2 {& `) p/ H. n% E

) e- D, Z7 Q0 Z% g1 e* g. \这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~
- @# F6 H& T8 W4 G另外,我用([who] of customer)来获取turtle的编号的方法对的吗?如  set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    中.

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发表于 2008-3-17 17:34:20 | 显示全部楼层

资料不全

你把你的所有程序传上来我看一下,估计不是大问题。(南京大学)
 楼主| 发表于 2008-3-18 13:10:54 | 显示全部楼层
你好,这是我现在正在写着的程序,以上问题就在其中,请多指教
* X* s% ?1 n) p1 Yglobals[
0 K/ q6 Z' y( d# |xmax
1 Z- z! O. m. [7 symax0 n# m. [7 X- o% V$ V& F( x, |5 I
global-reputation-list
6 n1 }$ y0 o, M* e  a
9 t7 M  L6 x/ G;;
每一个turtle的全局声誉都存在此LIST; A0 F; J/ K" t" r$ J8 o) \
credibility-list
+ t( a( C8 d  n" i;;
每一个turtle的评价可信度
; A3 w5 e3 ^# M6 N1 L, t1 u: K) m! ^honest-service
$ Y+ U" Y: X( N5 y: O3 \  tunhonest-service
3 U" K. \3 O0 g# E! K1 F" D: ]oscillation% n7 s+ ]) z8 p2 i1 U& {
rand-dynamic
" V- P# C* ]6 I9 x6 Z- w]# D% U' E. @. T
* o0 I4 i6 h+ L& e& }
turtles-own[
$ t+ h# l' a, ~( m  U- w3 ktrade-record-all' N& O$ Q, q$ D# C! W; t: k+ n
;;a list of lists,
trade-record-one组成
3 @0 \9 z" z6 F+ A  O6 ~trade-record-one! D" L( z: C# F
;;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& V0 a* f$ `) a  ~7 {* R$ p0 }* j1 E
;;[
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]]; _5 t& ^& M& k- }' t/ H# r
trade-record-current;;list,trade-record-one中的这个list,作为暂存用,[本次交易的时间,交易金额,得到的评价,给出的评价,评价时间,此次交易后相对于对方turtle的局部声誉]
9 M& [2 s9 G6 h, ?6 e+ \4 Tcredibility-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: Y+ L9 y( E: J, r) K" T- X9 Q5 p
neighbor-total3 L9 Y* |8 I- K$ V" h6 O
;;
记录该turtle的邻居节点的数目# @7 X+ t! B4 q7 j2 f; d  T
trade-time
' \9 r/ D2 d& ?/ S;;
当前发生交易的turtle的交易时间) z0 u& t" R/ a8 k- F( `9 R
appraise-give4 W4 L& s% K; b9 G. R) Y8 n) N& @
;;
当前发生交易时给出的评价
" B9 X3 r  d# @. |9 mappraise-receive
1 S. B. h3 j6 s; ?- B' Z& _1 ~;;
当前发生交易时收到的评价
' E3 l1 D# ?0 K) gappraise-time
8 \- T- G$ h9 a# B7 [;;
当前发生交易时的评价时间
2 C) o/ J& C' g" U* s. q9 Plocal-reputation-now;;此次交易后相对于对方turtle的局部声誉) d3 h" y, i% b
trade-times-total
" w; G7 ^5 z5 `: q( I/ n: m; [; N( F;;
与当前turtle的交易总次数
" o1 R7 w9 e8 q  p9 w# I- h% ]trade-money-total) q" D( Y. Q: L. d
;;
与当前turtle的交易总金额. S; D6 X* r" M0 S7 L
local-reputation
- U% U8 S) X) H6 b& A& C$ jglobal-reputation& k9 E& C. |% R& f
credibility4 C6 h5 D# H$ H' z4 k- ^# I
;;
评价可信度,每次交易后都需要更新
  [: n+ e9 C1 r+ K0 Fcredibility-all* s; E( `; x% n* t* \
;;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
0 P/ ~! q$ ]2 q' Y" k, U, r% Q! |
" Q5 z% p7 q& G! W; v) U;;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
! y6 S% w' B  Y* ?+ J* i9 h7 tcredibility-one3 O$ H" b8 [7 R- E- S0 Q2 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people2 g( N- c$ y. d* l5 v3 g# \
global-proportion
4 {. }& b. ]1 R) S- l, Ncustomer
1 S; E9 G# X0 H8 L( icustomer-no
; q+ c0 i9 ~/ U8 Y" X( Ztrust-ok  j/ Y5 a. r" u/ e  e! t+ I
trade-record-one-len;;trade-record-one的长度
* C; R. u5 f1 j  i]7 I# ?/ G& H0 [7 s, r: g

, ~, S+ N" S* W) U5 {% ]) };;setup procedure
, J: T7 A/ c' l  \  `: {  s! k, ^- o" v) k! Z
to setup
/ Y6 y" I6 Y5 d5 \" O& }+ f8 a) T
ca
+ ~6 |8 h3 P9 e8 P

; `6 r$ `% R! B/ L: d# {  }/ pinitialize-settings
* d1 ?$ X9 N# [, N  f( P. F
1 Q" q3 T; ~$ h
crt people [setup-turtles]

% g7 M' |* @. k" H7 ~2 O
4 z' V' r' a" V) [7 ?reset-timer

$ g4 w, ?% a) A" v* L. i8 H/ r1 U- f6 W" {
poll-class
/ q1 m3 p( B9 |' u) d
9 m- V9 h4 ~) A7 g5 i
setup-plots
/ s8 R- Q/ g/ R
* H) n5 ]2 n4 k; P
do-plots

  {0 h& E5 ]" }* W; {end
, s; J( {9 b: p$ ^! j
  L" u* e$ y% k7 J$ E7 I/ mto initialize-settings
; z5 N. E* J( W' U& t
0 O4 d4 D: g7 b/ h3 Pset global-reputation-list []

! U7 u$ m0 j$ l, T
8 V' O: {5 b$ ~! E+ ^1 D' mset credibility-list n-values people [0.5]
9 S- `. |9 P8 Q! T

0 I( J. D, u, g4 |% u/ a2 rset honest-service 0
% `* d& j& [$ {4 m( X# H

1 F4 Y% \! D% g8 a1 I8 j9 e2 f, E+ rset unhonest-service 0
, B, s8 y. c( s0 U# K# ?
4 b, |6 p6 u) P) T
set oscillation 0
0 ?+ Q. E9 r# i
4 f$ m  h" E! i5 F- y* O' k/ q
set rand-dynamic 0
0 d6 z* a" ~# v; l
end
8 [* M# U" O& [& X, F& n' f, _4 a& v9 W  ~  }" p
to setup-turtles / C) w7 R. p, {; N. M3 L
set shape "person") c4 z1 ]! W' r! \
setxy random-xcor random-ycor
* ^+ A4 B- `; h# tset trade-record-one []: n" V7 M: N2 m. i' [3 |1 T: k
; o9 A3 x+ w6 e6 K" M
set trade-record-all n-values people [(list (? + 1) 0 0)]
9 L8 r" P' j4 d! V4 Z
0 Z7 s. g. u! t; O3 |; J/ ~
set trade-record-current []: D  \; F5 t7 t6 S4 w; j" j
set credibility-receive []
. b8 q3 V8 M7 i  `" N* tset local-reputation 0.5+ s: ?* `+ R' F- b
set neighbor-total 0. v, R! W# e; H0 O# Z6 Y
set trade-times-total 0$ Z2 g4 T, O/ w8 L
set trade-money-total 04 J( c3 }& M- s9 S
set customer nobody
2 l& Y) W5 ?% M$ Y$ `/ `% nset credibility-all n-values people [creat-credibility]# o) ]) R/ y% F# c: F" j) Y9 ~
set credibility n-values people [-1]4 M8 ^1 C* ?* E: A
get-color
- q( Y3 t$ c* ?  ^& g* m

' f3 q' C5 p7 k5 g, W0 [' \- Uend
3 e8 ^7 y) M% |) I! w" H9 x
1 l0 m& G3 a5 B' hto-report creat-credibility/ ]1 z. d4 N# f" j
report n-values people [0.5]
- u5 j& ~7 I6 d% Q1 l% mend
( W' _! n9 }% R! z  m! A0 E8 P, G$ p" R4 d
to setup-plots
# j! C& V$ f+ k7 g0 g& t0 _2 e+ S3 L& T/ `+ I( W9 o
set xmax 30
! K" u! Z1 _' j

8 K) O- P) K4 T5 e4 @* K4 X5 i$ Iset ymax 1.0

1 f/ `0 \6 a% k# v% f1 M3 \: |: `5 w* r
clear-all-plots
8 _  y2 c& X% z8 V

, i8 W8 {$ {7 C7 B8 K2 Osetup-plot1
- w3 {( F* ~3 T5 a* [4 B
( N1 P" ~( n; b" [& r
setup-plot2
5 l9 {% l" K9 D1 Y* a. H

- l4 L3 Y3 l+ P) r' n2 Y; I& ?, zsetup-plot3
- M+ E, |% L: q8 i: w
end- h6 |7 y6 h! L0 M/ D3 w% F% B

, f3 m  R8 [& ?$ W* U;;run time procedures4 F: t  E) x" q- M7 P6 B; b- K
- ~8 I; g/ u+ ~* a" g5 D
to go3 A# A, |" K! K  x

7 C. m5 c; |8 O. g8 i$ ?ask turtles [do-business]
( s2 y) a& A$ d, y
end$ a5 H7 ~4 {( s! Y% E) R
' o6 z5 m$ r" ^# H
to do-business
. X) g& C2 b' y( D2 Z# v: X: e
% G- N1 i& U" n. r
2 }8 _7 V& p) H+ y$ X- f/ F1 D" `
rt random 360
! ]' v* W4 T  D. [; N

$ a* O$ i  q5 Efd 1

6 c4 A" m7 i, o, J
5 [: o( ]+ W& ?. J! v. nifelse(other turtles-here != nobody)[

9 Y1 D3 i' U2 a9 }- g) ^( X! M8 ?' R% n" n5 {
set customer one-of other turtles-here
$ U/ k; w; R. b% P0 _2 @9 r

) a( o9 W/ d' v;; set [customer] of customer myself
4 [8 c' M# i' K  T3 O7 |
2 E8 S( U- @# j. G0 d1 |
set [trade-record-one] of self item (([who] of customer) - 1)
. V/ {. g, Z# \* u( @[trade-record-all]of self" @6 a" Z, e4 ?5 Z+ M. {
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

- d/ a2 m9 }( m/ \8 N  K1 y/ k- J% {3 N* ?$ v
set [trade-record-one] of customer item (([who] of self) - 1)1 A& c2 u( D% ]4 |- v9 Q
[trade-record-all]of customer
1 N9 X. y( L& d: F9 r
9 S6 R2 M' C# E  Z; \' ?2 `
set [trade-record-one-len] of self length [trade-record-one] of self

& r: k( i4 }/ ~3 p# p$ _, \" @- e1 B! K: s# J
set trade-record-current( list (timer) (random money-upper-limit))
$ m9 ^0 v. a' J

: k5 V. k2 e3 {* ^! V* J& Task self [do-trust]' z$ ]1 q9 L- R- F
;;
先求ij的信任度
! T/ \2 T2 U3 \2 V  E8 D
6 J) R5 E  j/ Y# cif ([trust-ok] of self)
) S3 p2 }5 h4 E4 V! N9 @) J" f;;
根据ij的信任度来决定是否与j进行交易[
" M3 I% b" g$ U1 ?3 ]+ |ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
! y5 r; f0 d* y/ M( V  F# A1 ^! |
[

( x$ ^6 z0 I3 L
  Q9 j: o& C9 x( a, Jdo-trade
4 j5 u" I& t3 T1 P" p& k& }0 W
9 b% ~2 @, e( p' I& t1 P6 M; O! ^
update-credibility-ijl

# [. F+ [0 y- `2 ^
3 n$ W% y9 p7 b" R; zupdate-credibility-list
2 w6 k7 h7 ^$ o( I; d  |$ Y
0 k0 R  o) O! `& _" P6 V* E1 v

8 k- s9 H4 w* `9 dupdate-global-reputation-list

: c# O$ A8 Y, z& K' @6 ?) f* Z# o  y6 d# j1 q: ?: {  ~
poll-class
) h. ]7 D- _0 F& p0 g5 A
- g+ ]1 c9 q0 a2 j; p% s, F' s3 V
get-color

( M* o% S" \0 d2 N5 _6 O& e
# f8 D/ G) x- e% z5 B$ @/ x% J]]1 G, {" g9 b0 Z& M) V% X

: t$ Q; G0 P& o  h( q;;
如果所得的信任度满足条件,则进行交易3 `, s1 u; G( {

, ]# ^! K2 R% d1 p) f0 ]6 |  Q! j[
5 ?5 c1 X" m7 i  b; ]' u
7 V% L- N# _. v  G3 z
rt random 360
8 R0 h! h& o$ U9 ?4 V- [2 z
7 ~1 r) Y1 g' W/ N
fd 1

. f1 t0 C9 m" o( b- q% C9 r$ K' y9 ]. |" V
]

# x* Y. z$ f6 B
/ |6 g9 p" J' x- y8 g9 @. Lend
6 Q" A% u+ O# |3 t
2 S3 D; |$ u4 L- q0 {
to do-trust 2 {5 i; E- |8 S$ n2 F& T
set trust-ok False9 G3 ?( }% }% a. B
- d- `% [# a9 r- D2 C5 M

$ q0 m' c  R3 W' Wlet max-trade-times 0
7 J% z- z% Z/ _foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]- T5 Y/ I" j( [  d; T" O0 O5 P6 A, `1 a+ R
let max-trade-money 0$ T+ d/ Y. b! x% j
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
5 Y: r; o% d  i. o/ z) _6 r1 olet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))9 F4 Z  {8 n3 X& c& C* `+ D/ l
% _- z/ A- b/ H2 H

5 ^" ~& |4 P0 r. T: ?% cget-global-proportion
& i9 O8 q0 h9 _( Zlet trust-value1 ^' s+ R9 ]6 m: x! `& @
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)

9 {2 F( Z. a0 Y0 t) H! oif(trust-value > trade-trust-value)
+ c6 B8 i( _$ z+ f[set trust-ok true]
6 }/ X, _1 w7 t$ Vend6 a( n$ ]: B; O1 t& Y- c8 ^* H
! b& Z7 @# G4 F( `+ P
to get-global-proportion- `& n9 _$ M: m
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)1 P; E* s7 T3 {% h
[set global-proportion 0]$ e+ x% |. M; q  m) E: X1 T# T! G
[let i 0% k, Y( T+ F5 G: g4 N
let sum-money 0* _8 W& G7 W: z6 f& [  V
while[ i < people]
$ O( P$ c' R8 B" `$ E: Q[
7 v$ h# [9 P8 Eif( length (item i0 e* b4 s# f  o0 `* V
[trade-record-all] of customer) > 3 )
, N) V  A# l( [3 V2 C
[
( ^% Z6 y/ W, vset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
$ U/ a& g/ d) i4 w3 r]
& _8 D) X- P5 I/ t& u' B3 ]]
# `* t4 H  f. n7 A/ C; @/ n  }let j 0
9 Y9 z) O6 k1 q/ r+ vlet note 0
3 u7 |: `9 R! P5 [5 rwhile[ j < people]- I% v# g% H, J  z( P+ W
[
1 I6 P1 Q% ^  n- A  w3 u7 e$ Qif( length (item i
3 c( @( P* G* a3 Z3 F& e[trade-record-all] of customer) > 3 )

7 S/ M7 t- z6 c, \[
  f* [% S1 T5 ]6 Pifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)5 g' v$ K" f" P) T) i
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]/ g$ R) p- n8 y9 @& M( l
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]$ Q8 p0 C8 n& U" b
]/ j2 n$ O" {4 O# M" s9 E
]$ c* z- i, y, w+ n0 X! C
set global-proportion note
9 q/ V$ f  R0 l4 G+ ~; \/ V]
, z7 a: D$ ]7 e# _: ]3 w; Aend
4 J. K! [3 W7 r5 _
+ a9 ~6 Z/ y" U5 W% f1 L2 I1 Vto do-trade
. C) o1 A- T  M/ h" ?;;
这个过程实际上是给双方作出评价的过程
" B; t4 \$ Z# i& [# ?" ]set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价! I0 Y6 x: e) y
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价6 S+ R& @& R3 \. h& j8 T. D# _
set trade-record-current lput(timer) trade-record-current: j3 F8 d: {+ T2 @) {- W: t2 F
;;
评价时间
7 ?1 A- o: E# o! S1 Lask myself [
  D( ^: h( S. ?" s% ?! nupdate-local-reputation
0 Z/ W) {  o7 [% S4 u8 Yset trade-record-current lput([local-reputation] of myself) trade-record-current
  L8 F& h, O& Q/ O]' s& D0 ]& M# J8 b8 l
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
. \5 \0 f" y# ~( j! i9 m& x* C;;
将此次交易的记录加入到trade-record-one
& A( k4 q9 Z; W) y/ vset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)/ U% [. Z! B- o: N
let note (item 2 trade-record-current )
+ r6 _) L6 q3 d! w$ _set trade-record-current
6 [. A" O- Y4 s( Q3 }+ U! Z2 T# L(replace-item 2 trade-record-current (item 3 trade-record-current))
) M+ x* {. F9 V& s# `" R
set trade-record-current- g2 h" W/ S3 E& p- u. K
(replace-item 3 trade-record-current note)
/ c6 g0 `$ Z0 e( U" S! N! _6 W5 t# q; \. U/ f2 `
- J8 x, z7 n* s& a4 t( E
ask customer [) C# Y& d0 ^) o1 P% S$ n
update-local-reputation3 j# l2 N/ a3 A' z/ ?8 [$ x
set trade-record-current) c" ?% \, ^% H- y3 L
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
! \/ i( T0 l4 T; I( ?
]& P) f, z) C) ?3 B; s/ N, Q" m
4 K# [9 s3 l% t$ b" Y4 }
/ S# A0 G, c) p' R
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer% F  l9 z& j' I) N8 p9 ^
+ u/ i/ z8 p6 ]" |! W, Z
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
5 K2 J' }( A9 h; i& ^1 N;;
将此次交易的记录加入到customertrade-record-all0 P9 Z/ e8 M( i3 D* z
end
+ n  P7 J1 o' R' e  E: U5 a  a! N# k% j( p2 T; C
to update-local-reputation  [  `0 Q7 Z* U0 S% O
set [trade-record-one-len] of myself length [trade-record-one] of myself; q* v  ^/ Z9 e( o

# z0 a4 M* Y1 {' Y2 d3 N7 g1 K% W4 ]2 f( `: V% Z* W! t
;;if [trade-record-one-len] of myself > 3
3 `; Y* I! P- q! J  l" P9 }! `
update-neighbor-total& O0 h  `7 m0 J1 d2 C' l- g, G" C  h
;;
更新邻居节点的数目,在此进行
) N/ h" h9 a8 k8 H: j% Glet i 35 ?# `, O& _% ^" O2 ]' Q
let sum-time 0( d- n" ^) ]3 H4 Z0 [
while[i < [trade-record-one-len] of myself]+ |& d. i% P' z9 c  I/ k5 C) B5 p
[
4 d6 E5 J4 ^9 Z0 H* i+ C' X2 Yset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
4 V# g6 R* t) K. v# d& x& [! P) ~! Lset i' J' O, i: B2 `' _) A9 R  J8 R
( i + 1)

, z; `8 F0 |+ c]7 d2 [$ I! T% I. e
let j 3* G" V9 b5 O9 r! U2 Z/ k
let sum-money 0
6 I1 r& B4 g4 F9 X- Vwhile[j < [trade-record-one-len] of myself]
1 s9 `* N* P* d& \8 q; M[
3 \6 |. _. A: w/ f  H0 v! lset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)" ^" `9 |0 f) f$ C; v( q& M$ B. s
set j
7 \& w2 x8 [" Q; N( f# B9 Z3 c( j + 1)

! D9 I5 O9 ]3 e% O8 d) w]
' p/ V3 y' m% l. ^& J( W) p/ Zlet k 3
6 C) w& T$ k$ i4 A! b9 d/ A9 _let power 0
2 O6 g% f3 i8 @# Dlet local 0
6 C) C9 F$ C/ R0 |while [k <[trade-record-one-len] of myself]
' N  d/ \# V4 e[' }, V! w# t9 g+ o- g6 q( q
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)
- c4 w. w  ]1 W( s) ?3 q! B0 cset k (k + 1)1 V. O: {% [  z* \# ?' k. i
]
0 N" G+ w' A2 ^3 z! D) {0 Oset [local-reputation] of myself (local). s+ v6 X, N6 G' W1 s- u
end
% w% W, T4 X4 l! K7 ?) c! {
! @4 i# d5 K% W! `" Q9 Bto update-neighbor-total8 a0 S. v/ k* w5 d. t) M* N! O2 M
0 B/ y3 Z  o* O) k! n
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
, {4 x! H! a; X4 |2 q- d6 k5 G5 Y/ t6 }8 v- C
: U% }7 u: |8 ~( _
end, b% \! ~1 b4 N% l
; S; d$ P' f& V. R
to update-credibility-ijl
# g! a1 M# m% P+ v4 I8 m7 T3 h- @7 K( a: h" B9 T" ~4 b# v
;;
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。0 o9 R- m7 P0 ^& D: Z
let l 0
" P( E" R* Q6 l% o' ]' p- m" b4 Awhile[ l < people ]& G' ]+ H. s- r8 c$ @: J+ ~0 G
;;
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+ X- E( F( {1 G4 S  x) j0 q
[+ u! Q% [$ O# j7 t
let trade-record-one-j-l-len length item l ([trade-record-all] of customer). r2 [$ `6 Q3 L2 E! B5 ]
if (trade-record-one-j-l-len > 3)
4 \4 F! [4 h3 ^. _  |6 T/ E1 m[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
! z9 k9 ^% a$ L- v) Glet i 3& {4 g' D* V: d
let sum-time 01 R1 O( N1 ?/ p# v9 X/ X" \: h! b
while[i < trade-record-one-len]& _+ N/ B9 {7 F* A) U1 j1 c
[
9 q! L& o! X: d& hset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
8 v$ O( F6 R! \7 q5 E& D$ wset i' ?3 `5 d: Q  V/ p
( i + 1)

' w% m- D' B& f& z  W]
, M* [; Y- F/ z  J5 ~: N/ @/ q  Ilet credibility-i-j-l 04 H* W9 u. U" I6 Y0 w$ [1 G- n
;;i
评价(jjl的评价)8 B" p, v7 }! ?
let j 3) C$ H- V, C6 k9 n% g$ K+ q
let k 44 @6 w$ t7 e2 i1 E! X6 o+ s& G3 k6 g1 M
while[j < trade-record-one-len]3 C( \9 G0 i: W1 u) X
[
6 V2 P' a, }% ]1 v) Iwhile [((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
& j+ c$ L* K0 j3 U0 \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)! L+ t( _+ P4 d& i+ S( J
set j* R6 x0 i4 y) E  ~) a
( j + 1)
& \" v& S1 i) O7 Z% f% a7 m
]. k' s& @, ^8 v: W4 s: T
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 ))2 Q8 i6 m+ q) N; {, C

, a  L- O1 w+ `# X
& E" J" m8 ]; T/ e
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
; ?' N  Y. q. c  N: W, |/ m) y- C;;
及时更新il的评价质量的评价4 e3 @( B5 n7 w4 f6 d
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]8 o1 J( W, {' {
set l (l + 1)% A  l& }; ]4 g3 L7 W3 b' T% A
]4 ]4 |, H8 Y( f
end
, k1 T! Z& G+ o  |! V
: W9 @3 X1 D3 v8 O" M$ b$ sto update-credibility-list% T: V# `- a! h- T  ~0 \$ z. N1 `
let i 0
# d' R& `: ~' {9 }8 qwhile[i < people]8 u/ g+ h4 F0 Y  z
[+ S# b7 ~3 C/ R6 l0 V0 c" ~
let j 0; ?, r* D: A; G' I/ k) \( L
let note 04 U$ @  B# p) e& x0 e  a
let k 0: J4 b7 y& m  k/ v# l! j; ^
;;
计作出过评价的邻居节点的数目# {. G7 j8 K, e  ?# q& _: x  m
while[j < people]
4 S+ \: h9 M; T; h, D$ U[
6 S8 U3 m  o9 e; m7 _& o. Cif (item j( [credibility] of turtle (i + 1)) != -1)3 a. D. E$ Z- u
;;
判断是否给本turtle的评价质量做出过评价的节点
6 f- A, M2 W7 h1 z[set note (note + item j ([credibility]of turtle (i + 1))). A9 L; t5 D( _
;;*(exp (-(people - 2)))/(people - 2))]
' Y: U# O3 }3 L3 O  G
set k (k + 1)% C" k4 z! Y3 U+ Z
]
5 v1 |' S5 k0 `9 x; Fset j (j + 1)
5 h$ N( h' f% h3 E]5 q( b9 P& N* {( ~6 w5 S5 u( _7 l
set note (note *(exp (- (1 / k)))/ k)3 M" O  s# x; P4 c4 `4 p" ?) W9 V; r+ t
set credibility-list (replace-item i credibility-list note): b1 B$ y& ^- Y7 t: [* l
set i (i + 1)
) _( L, \/ x0 @# O6 j5 Q]1 }+ y. F) M) ?* @8 l& t
end
) T3 K4 m+ v9 R; M1 M( k" Y$ R# k7 L/ k% S& p, f$ H
to update-global-reputation-list* m% f# }7 n6 Y' C
let j 0( E( l) r3 M' N: g
while[j < people]& e* ~- G# o; Z, T# \2 l
[; B. J/ j/ _) z$ J# a9 W
let new 0
: f0 t* V6 X8 J;;
暂存新的一个全局声誉
+ e# V* s, _( M" P! f3 Alet i 02 s$ J0 l, W" [8 K: c
let sum-money 0
! c( X7 f# d0 c! e1 _1 t8 mlet credibility-money 0. N% E, d! d$ ?; p' ?4 ^) a) Y2 a% a
while [i < people]5 j+ R+ }9 W2 D9 F( P1 j' t
[- j/ q& ^7 L+ ^5 V
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))0 k, ?7 E* m) }" n! p( y+ P- L
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
% [; B( i' k' i' ~set i (i + 1)$ w9 w) Z4 ?6 v9 X1 b9 J+ ~
]
% E# x* l7 U7 v. X* H. Mlet k 0
5 v& Q! G% r0 Z, w% nlet new1 0
2 Z. X9 R5 x9 I/ Twhile [k < people]: ^$ H& q: S5 e% L- g
[
# o( {* L8 K- k/ L0 Z! U/ ?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)' ^  ~' Y7 l) v7 Z% u
set k (k + 1)
0 H% a$ U9 h0 r]
) L# m) o2 J% y, T- wset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 2 k# e2 X/ K; x6 n- e. _: x: q* |
set global-reputation-list (replace-item j global-reputation-list new)' K: `* G, z! q/ W6 V3 V8 l& q9 w
set j (j + 1)
" m& [9 o8 F8 H( `( w8 m* e]
/ `' r7 d6 i! v9 dend( ~1 e; s" R. v& l7 \
9 j4 C" w3 A* h% w& P1 ~
+ Y. K# X4 z: [/ i7 r6 m# {# e) {, U

3 W) m" `6 [3 L1 W1 G3 I* Q' Bto get-color
0 Q# W% [' {# _" M. N9 T: A6 b6 X' N& M' b7 Y) C$ o
set color blue

0 x7 f* Q" t4 N! D6 Rend
+ e2 K& g" l. P1 e+ d. |/ @7 B! K% c/ i# S! D/ C) h0 o, c2 s
to poll-class
! K  _" q; F% H; ?1 n: Eend! N9 _0 J- [. O- Y
, S! w" T  |8 @' \& v# Q- r) G7 Z
to setup-plot1# R7 r9 `4 f3 ~, {' F+ d
+ x; u9 ?& D' u+ P. @/ L% l0 t4 m$ _5 T
set-current-plot "Trends-of-Local-reputation"

$ v% G; F2 w0 ?% s% W- @
' ~0 K; r6 y, n: Aset-plot-x-range 0 xmax
! X6 q" G$ n1 k0 Q' i! }
! i. \1 E1 ?  U. _! V
set-plot-y-range 0.0 ymax

9 U3 H2 a0 }% {0 Q" zend7 h$ e. ]* R, ~3 r  f$ T
6 R0 |* c! `9 Z2 v4 W
to setup-plot2
$ Y- K& q: r9 T* R) y
+ ]( X0 L9 X" `  q7 W& aset-current-plot "Trends-of-global-reputation"

9 }, W, X/ T% k- i& d+ |. d8 A1 I! R# L
set-plot-x-range 0 xmax

! ^6 K6 o! Y" z" X2 ?, B8 _/ a& i0 J3 w- f
set-plot-y-range 0.0 ymax
' ?) m8 K, N3 |4 D8 T, X
end  c# x4 e. k4 X

/ R( ~* j* t' d2 z) a8 I  Kto setup-plot3
! }  v& k' V9 K) q( ]3 ?
, Q$ ?% l4 M& b1 B% ]set-current-plot "Trends-of-credibility"

4 y4 A! }' m9 @* H: }9 m
# r6 N, |$ ^- R) _, _3 b0 Iset-plot-x-range 0 xmax
0 F8 g  ^# B9 ^' n/ _- ~

# s1 W: l! J0 Z/ O, w' l6 Eset-plot-y-range 0.0 ymax

% J9 x/ h* X( E. I4 d% zend9 ^, V) i% j8 ?  |9 Z" l
  P1 w) j( a7 z1 l) x
to do-plots
5 _+ Q9 J! O$ [5 P9 M7 z# J" b# hset-current-plot "Trends-of-Local-reputation"% r4 v9 g, s& |8 h
set-current-plot-pen "Honest service"
8 \& H0 V4 J" T+ E! Lend; o% S5 K% Z  O. D5 ^

. l+ h+ 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.
' Y8 D8 C& y+ }3 C* Q$ W) Z. j; j2 X- q4 n" _" t& O* y
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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