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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:) B5 u. q7 y2 n$ Y# v" W
to do-business
  e" o! j) I4 s& r8 F rt random 360
; J# a6 `' n: E8 t! `+ q fd 1
7 o: e6 ~" Q" C5 y% \! K7 H0 x ifelse(other turtles-here != nobody)[- k( x8 q- K8 S, ], H
   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.
8 K% Y7 P1 B- R7 ]( R0 g- b) }   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ' q8 w; l7 S% u( k6 t; }7 ^  a
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
% j, A2 N; P. v% i8 ^   set [trade-record-one-len] of self length [trade-record-one] of self1 k8 ~) Y4 Z3 i
   set trade-record-current( list (timer) (random money-upper-limit))
  M. s# E$ i  b* v, g2 E  Y7 l: M$ O7 O/ G, G0 U
问题的提示如下:" s) G4 F% _% M6 B6 O8 X8 ]

% R/ D6 ^# O) L  N, G3 Q0 jerror while turtle 50 running OF in procedure DO-BUSINESS
/ K! [9 A0 G  q( ]4 m$ B# Z  called by procedure GO
; Y# N$ P, j/ _4 r: F% L1 \OF expected input to be a turtle agentset or turtle but got NOBODY instead.
3 T5 M, M* x; ~9 [' |
(halted running of go)6 }& f0 `: L# B; s2 \. W+ a

, s, c+ j, i( v; K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~~* d2 K& i! q7 X1 r
另外,我用([who] of customer)来获取turtle的编号的方法对的吗?如  set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    中.

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发表于 2008-3-17 17:34:20 | 显示全部楼层

资料不全

你把你的所有程序传上来我看一下,估计不是大问题。(南京大学)
 楼主| 发表于 2008-3-18 13:10:54 | 显示全部楼层
你好,这是我现在正在写着的程序,以上问题就在其中,请多指教2 v, O; L7 F- O; i( F
globals[
; K& y- i5 \* N) {6 Gxmax
) b/ k/ B& v5 H% ^5 o) m5 \ymax
6 X& X% k6 J! b4 Mglobal-reputation-list
' _5 i3 C  \/ S& F& W8 {# f0 \
) Y1 F, s8 @9 Z+ a! A) @" r;;
每一个turtle的全局声誉都存在此LIST/ L4 b3 ]% k8 C5 A3 k; j3 S4 q
credibility-list) u; G6 @$ i& M/ r
;;
每一个turtle的评价可信度3 L% E+ u, _" l8 Z  C$ t
honest-service1 W# F( ~' e) r1 T. j8 H) C
unhonest-service& j, V* Y; k1 k4 ?3 {
oscillation
# i9 P- ]8 A' b8 y, Y+ L1 ^; Zrand-dynamic
# |) U! e/ b2 }8 z]
# E3 z2 |) r6 u+ y
5 B$ A& p+ t8 d- b1 b* e9 pturtles-own[% F1 }7 n" d1 h, b5 R0 ]
trade-record-all- D: ^) d' h$ o0 N3 Y4 F) A
;;a list of lists,
trade-record-one组成, ~; }! n5 Q0 O: f; Z
trade-record-one
* g; T  r2 q' @, {( `;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录6 p' T  n# |+ b/ f$ G# A

0 g# L( u: b6 R( P! [/ A; @;;[
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]]
* _% I& b" c7 gtrade-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]: W" s0 V7 s4 i9 \
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
& O  ?- Q- K/ @2 A1 S4 ~: y/ R: fneighbor-total) G. S- ?6 _( T7 T7 y. S6 }9 l
;;
记录该turtle的邻居节点的数目
7 O5 h6 @0 y; l# i( p* Htrade-time$ N0 |5 h5 M1 q$ C# O* R+ S
;;
当前发生交易的turtle的交易时间
& A/ m( C: W- m  ~5 i$ j- Lappraise-give; C2 @9 p( K( Z* Q
;;
当前发生交易时给出的评价) U* j+ q( h5 A" X! I* X! [
appraise-receive
. K4 _. F4 W$ ]$ l! C+ f$ f) \;;
当前发生交易时收到的评价4 ?# H9 C4 B* v& C! C  ^% \4 u* k3 i
appraise-time1 S5 I% T$ R2 A
;;
当前发生交易时的评价时间5 `( L  x7 k2 \3 t
local-reputation-now;;此次交易后相对于对方turtle的局部声誉4 t. ^6 N. {4 H3 `7 i# D! n
trade-times-total- Y1 C$ A! a- K2 K- E* r- S7 s$ O
;;
与当前turtle的交易总次数
: L: F$ c; G$ k! r7 ctrade-money-total' G5 R- b  \' E- @0 Z* n3 S" J) P
;;
与当前turtle的交易总金额
# j0 ?5 b/ F6 mlocal-reputation
) u, C8 Y% @2 @% k% tglobal-reputation
$ l1 I  Q, z2 D4 Y8 hcredibility
( p- _+ B( X, `9 b;;
评价可信度,每次交易后都需要更新$ s% T* m' R0 D" |8 C
credibility-all
. Y5 b% g8 s; C9 [2 ^# |;;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/ D. @0 L; k& l8 _
3 X1 d9 g3 I1 J* A
;;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
* `* A1 r$ m% g! v( G: C9 X' @credibility-one
+ R* w, r. J; D;;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people6 @7 B# q% f9 u2 r
global-proportion
# a+ S( h% u0 [. Ocustomer- F9 O8 |/ d4 @6 r
customer-no
* D, N/ E# t0 s8 J- Jtrust-ok: a$ c9 Y! {8 Y2 k) h0 C
trade-record-one-len;;trade-record-one的长度
: U  _: v% h6 T2 Y4 l2 A) T]
3 f# V; Y5 j1 @! h2 S& U: [: c# a- L" }  e( N4 B% G9 B% ]
;;setup procedure
. N! i8 _( y( \
  u" h, w: l$ N' S; q% Xto setup( ]5 X' @' R: y. A/ Q4 l
9 k$ T; {' Q: ^4 S2 V
ca
- ~. r+ V  e) ~" F1 _! ?+ p4 H3 i

; |% x/ G3 N6 z8 z1 y1 Iinitialize-settings

$ k0 }- p! \: d' }  o5 ^5 g/ ]2 G" N9 q+ g& @0 h7 A
crt people [setup-turtles]

% E7 _/ ?0 {, h6 g5 J# s% t) ~) x% Z+ I5 ]2 A- l0 _' p5 G3 K" z7 N
reset-timer

' @( u9 t0 D' L% ~( K) p: \9 Y+ I
' d% H  P6 ]- x% U, l8 ]poll-class

2 k) w9 y/ r) H. ?3 c. f
: g5 j# s- M2 R+ _: I' c# Zsetup-plots

9 k) ^- G, b: x! x+ B: o5 M1 r0 B
$ h+ w* b% f! i! Kdo-plots
' ]' l" e$ E. z: }5 H8 e* b
end
: c( ^$ B2 P+ _4 r/ y
4 Z2 b5 ~. s( Y7 [, X. p: Fto initialize-settings/ S) T8 i. Z8 W3 C. s
/ _1 d  L; x! G( s. I
set global-reputation-list []
1 j" ?& N9 i* N$ H, w, {
' W$ ^+ A7 W" m3 J1 L4 d. B; Y5 H. Y
set credibility-list n-values people [0.5]
7 M( S$ I$ F& ^0 d& ], m# H2 i
4 ~0 K' |6 @2 s7 T* M8 u& Z) o
set honest-service 0
8 {7 M6 O# x1 v. V+ b
! ~0 f8 z; Z7 E' Y! J/ y
set unhonest-service 0

& \+ g/ b) V0 M3 E& ~3 C2 @) m- {+ `
; f# y0 P. f0 Z' E: I2 Aset oscillation 0
7 O# `3 n( o& i' r( G6 O
$ P4 v8 \! A5 c. U) [+ Y
set rand-dynamic 0
3 _5 ], p- G' Y0 A
end/ n! t4 I0 P5 h! @7 c( X% l  R
% W: L2 B" Z1 E0 X. P3 X7 c: k' R
to setup-turtles
+ L4 K% s8 H% c- v' ^set shape "person"/ S/ R/ ?9 ?6 s  _
setxy random-xcor random-ycor: a* D  _1 x% e5 N5 k
set trade-record-one []* q5 v* H' P$ [" E0 @+ }

- ?8 F; Z- w' gset trade-record-all n-values people [(list (? + 1) 0 0)] 6 {2 P+ w1 G/ ^' D" g
0 R3 i: _9 G& R; y5 N
set trade-record-current []
, G; R/ B! ?) ~; M5 O$ a) vset credibility-receive []
$ H  H* d3 a* {! Oset local-reputation 0.5# `) k- F6 i! P8 h( C
set neighbor-total 0" ?# i/ G8 g* L' p+ B$ X3 n" B
set trade-times-total 0
  p, Z% P5 N+ J! E- [set trade-money-total 0
8 _- Y, f- {9 X9 Nset customer nobody2 d$ U- r2 k( U/ E2 A0 P: Y
set credibility-all n-values people [creat-credibility]% J& B0 }3 y( a+ M8 i
set credibility n-values people [-1]9 K  j- t4 H8 H7 P/ Y* g
get-color
7 _, P: _9 ]# h# |5 ?/ J$ R, D0 J
& x" N% G9 f: w4 c% l5 ]
end
' l4 F# j! B- k
+ }7 C6 _% J: N6 Y  {& Z; Pto-report creat-credibility) }: t: `. [3 [2 R
report n-values people [0.5]
/ O# P: ]' @; ^+ c! w; gend$ V6 R7 ~; S& d' {
$ s% A- A5 ]/ c# o
to setup-plots
" Q+ o( v; h+ O# q% i- E' ]' h
; ^' Y1 j0 ~6 f, ]6 {" ^set xmax 30

' A+ ^3 f. x: Q1 h, O5 \
& z( l+ C) g% \% Wset ymax 1.0

1 U/ B% O& m& Z! _2 j! v
$ l1 P& z# @2 g! K; o9 rclear-all-plots

9 H, |" R, {4 R" A- H( Q  d5 l
3 _. ]4 D" W, r5 Tsetup-plot1

* T: X' W, z6 T# d1 J1 {  B9 q2 b' l4 Y) S7 F
setup-plot2

* x5 _4 u  l$ `; k  }, P) V, S8 j2 n9 Z; s! l& N' F1 d) Q
setup-plot3

" Y; E# ^; i( x& X. I2 S, Pend4 F) i6 P7 o* \! p1 ~1 |5 D/ L8 M. ?

% y6 O  Q1 z9 ~! h2 M;;run time procedures- c/ f( p% O* P9 J
# R5 K) |. H3 s8 r" U3 F
to go$ I" l- e) H0 F5 e+ q5 [

' D) ?5 [3 {, b$ m/ A1 Rask turtles [do-business]

4 ]& m9 x& z$ X7 B7 m6 w% bend/ L* @# r4 M2 |' ]6 l; a
2 h/ p7 o8 |9 k; T# t. ^* h' H
to do-business
2 I( g* X& k9 z, r/ f2 _
# s! O; _9 J3 l& c3 l6 {& ?% @$ `
2 z6 q! F, p; {; m0 w
rt random 360
0 q% z; {1 n: G* P5 P2 k

. @& p: J8 p+ O& [! cfd 1

- c5 H" @/ a! d, h8 h# _& A5 [
: D& K, m( L/ uifelse(other turtles-here != nobody)[

) q7 s& E- C8 ~" Y/ R& v& v( }5 p/ Y6 t( {
set customer one-of other turtles-here
& O5 `) \4 v+ _$ ^" D* L4 T

: x) Q& P) A1 l" [+ B;; set [customer] of customer myself

* j. j2 I' \; O+ t
% T8 X7 `) F8 ~7 \3 Z$ uset [trade-record-one] of self item (([who] of customer) - 1)1 @- o: R5 \$ x- o
[trade-record-all]of self+ O. b. e- t7 T* Y: x8 K9 g
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
+ Y2 n2 K. {. m  v6 T  {: @7 B

4 d5 [: \0 H  Z( R9 J. ?set [trade-record-one] of customer item (([who] of self) - 1)
& F& ?; f5 Y$ U1 i2 W! O3 s' h[trade-record-all]of customer

. i% F4 r9 u  j2 E4 `$ B
7 f# ~! n6 h; @& s; Dset [trade-record-one-len] of self length [trade-record-one] of self
" y. R/ h( r% S2 A# O4 ~; T& N0 h

9 J. J# g9 j. R/ sset trade-record-current( list (timer) (random money-upper-limit))
. |, m" H% q, [6 k) [
' [* ~2 W4 K: p. a' o& C& o/ X' v; R9 V
ask self [do-trust]
/ x% s3 T' f% C6 h2 z1 }8 M2 L% s;;
先求ij的信任度
  k1 z6 m) M7 W0 b6 a) Z5 {" H
7 G+ B; A; A" }: D* e( qif ([trust-ok] of self)! Q0 N. z/ Z: p/ L
;;
根据ij的信任度来决定是否与j进行交易[
9 J" B! i6 y; v, r5 a3 I/ Fask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
' M1 s3 E9 W, ~$ b" c9 y  I- r6 R' z3 C2 J- y
[

2 ~$ y# @& O6 k9 n. r8 {. n- ?3 w2 q& U8 a0 d( c/ r! y
do-trade

* k$ T$ w  @# M5 \+ z5 r, ?; e1 H
update-credibility-ijl
4 P% P) C0 X. J$ Q% U. `/ w1 X0 `

" z1 X7 _) g) q" iupdate-credibility-list. u( U: a0 {; P: x

: L1 E& a; r7 ?& [. L3 l% O0 V# ^; y6 o+ M3 I8 ?
update-global-reputation-list

# j! P3 _( H$ n2 G" b4 R8 I, F* k! N1 p
poll-class

; N  M! L  t% I# |$ q: Q* O# ]2 c5 }3 ]" Z6 O
get-color
' n  w+ F' X" O7 W+ A
5 C2 D7 N( Q8 f' E( E5 A
]]: v) G" J' a/ e: O
$ {8 D4 q& g9 b/ A7 V- X3 s
;;
如果所得的信任度满足条件,则进行交易4 D/ h. T9 V! R$ ^- Z$ ~
5 I! o( O+ M8 a( _6 }! K
[

7 h9 Z* L# V8 ]( V0 a" c( m& G
1 X8 b. ]4 U- A# [! Srt random 360
( z+ A9 z  c4 s9 p% X" _& g3 W4 {5 V, J

- \% v( c; H5 Z# Pfd 1
' C. Q6 T  F% Y+ C% J# f

3 h8 [, h+ j& S8 q" @; s]
. G3 s* ^( O% i+ D( G

6 }3 a7 a( Y: I2 ?5 H( D2 Zend
: I) M* ~% a  {1 n
0 I& f0 a0 u5 e  N& q( F# D; Y" r
to do-trust
# @' Y; Y+ D8 D2 sset trust-ok False# `7 _! ?1 \- g. |& _% N
4 ~. f# f6 W4 H5 {3 z2 I# s

* G& i, c# ~9 t) i0 i# T9 Zlet max-trade-times 0
' R# E/ y1 Y& M! Qforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]4 k6 H6 f% Z9 q$ \8 z  L
let max-trade-money 0
/ c% B! A4 z. m4 N2 u4 `foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]; Z' L5 c4 l; X) \
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))7 O  Q" y& H7 m; a( \( r" w
5 z4 N+ S( H/ o) y5 y9 @1 U

( j1 C& k: x5 z3 I& ]+ ~  ^& Oget-global-proportion
. t, u8 d1 r( V/ S1 Qlet trust-value
2 @' V: \+ X" f7 Ilocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
" i8 F. a9 K1 w( q: e
if(trust-value > trade-trust-value)
. _2 P* [; @' a$ h! k$ o[set trust-ok true]$ a1 I' C: d' ?& w3 e' O  Q
end' M( v  Y$ b  L

4 M3 u8 j% w% nto get-global-proportion4 o" D3 Z: C3 B! M! f  g; L
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
# M+ T4 r. i8 o% U[set global-proportion 0]
2 [, v1 T  d- z& c7 |. O[let i 0
- \. W2 P. `4 l3 \let sum-money 0
' [& `4 J7 d, }: cwhile[ i < people]
- N+ _& K" X" k" ]& n[
( T# C+ g- L  [$ [( Rif( length (item i- h" t& D9 J. x3 J8 O0 A8 _5 Y/ m
[trade-record-all] of customer) > 3 )

: [7 i( H  ~4 E- }1 X+ C& g/ E( W[. ]: v# D; @$ M( P. K0 l, k# J' P
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
8 [  o3 E9 ?2 T& F]3 ^9 n+ a& {3 j3 M
]
5 q2 I' m5 ^9 Z+ D5 B( I) Xlet j 0
4 d, b/ Q8 n/ A5 a8 A" G# P9 llet note 0
5 i+ d. C: k( v) v+ I5 X& iwhile[ j < people]; K' n  T* o$ X( o8 @
[
: u5 ^) \( @" L3 }0 Qif( length (item i+ {+ q0 }8 x( c/ {5 J
[trade-record-all] of customer) > 3 )
* r/ c, i  Z5 k3 y* a$ f/ D6 P" |
[
0 C) m6 V* @  f0 p8 d- [  R7 J* ]ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
, W+ o% k% F" [* M/ j$ l[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]% K. D1 i2 v! M7 h$ P# P
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
  A' f+ n! X# I  {* R. n' \& j4 @/ A]/ u* I, J* q' u$ D" Q) O6 r. e
]
, J- _0 O* l( ]! U% e2 L* ]$ c# k% tset global-proportion note
5 m( l+ v4 k* O0 e2 B]" [" q+ j* Z3 l% o$ g8 V% V
end* e$ u- _0 h) [" R+ c/ C3 @
' r5 s1 Q+ H" Y8 j
to do-trade1 M0 w; p: S0 m& r
;;
这个过程实际上是给双方作出评价的过程) g6 }: i! J4 V# c
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价: t9 j6 y! n6 R8 ]* ^2 B0 R
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价5 [- T. e) V- Q# d4 ?) k
set trade-record-current lput(timer) trade-record-current
5 B0 ]" f; Q7 ~* A; p6 @9 s* l;;
评价时间. N  ~' C) e7 t: B( @
ask myself [% R0 l( V& K/ C' b1 L
update-local-reputation6 n! n) X7 U1 y0 i, A8 |6 ]
set trade-record-current lput([local-reputation] of myself) trade-record-current: b- p/ q, g$ W, B4 W4 A- H
], f4 D( C+ c0 O9 g. ~5 P7 D
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself. `* C& p; ]9 U7 b8 {
;;
将此次交易的记录加入到trade-record-one6 j- [7 E& Y# G+ }& [( B% K
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)$ o8 n' \/ _* M0 x+ l0 {  u3 Q5 {: x
let note (item 2 trade-record-current )
  r7 ?* h: g' Q. U5 \6 _7 `& S* Qset trade-record-current" ^- P6 Q" E# \4 C$ o
(replace-item 2 trade-record-current (item 3 trade-record-current))
3 A8 f1 l7 `1 d( R6 }  W
set trade-record-current& o9 L5 Y6 `4 A3 r, u
(replace-item 3 trade-record-current note)
, W% \& U$ m# `0 v, x9 m: [$ h% v+ h4 b3 _8 A

+ o' ?7 `$ V6 @  \. t7 b% F: yask customer [8 B; V7 z! A: C8 }9 V
update-local-reputation- P- M6 B6 a, o* _. N, Z. P
set trade-record-current
$ N! x' H! W" R) x(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

6 a* T0 O7 B' i]! d" B/ x1 x8 q* r5 J% G! w$ J
5 ~" [' l( n" y$ I
+ F$ V# n. W! y3 l$ Y4 e2 U# n
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer; w, s9 Q" i; R) c9 Y, T6 R9 n) g
' [4 D7 v( u$ `4 y$ h. D
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))9 f" z5 e( C& m; J- {1 Y0 y+ e" I8 g
;;
将此次交易的记录加入到customertrade-record-all8 ?& _$ \0 ]& k! F! v4 Q4 Q/ b
end
& q& l: o+ C. W
  @6 C+ o& L$ ?# U8 zto update-local-reputation
7 A6 ?- s; N' k3 R8 V' N% pset [trade-record-one-len] of myself length [trade-record-one] of myself
0 \* ^5 C3 }* ]' `' O, h; z/ M7 Y7 R- Y
+ b( y. S5 m% Y) [
;;if [trade-record-one-len] of myself > 3
+ v) m2 L$ p. K5 w. s
update-neighbor-total& B& g$ U/ d" J# z# p# G, o$ ?; r/ S
;;
更新邻居节点的数目,在此进行
) Q6 Y2 A: z# V2 F( Z% P  elet i 3
% b. K! l/ G9 p( _5 o! Z" llet sum-time 06 E! b4 \' }& d9 w3 |
while[i < [trade-record-one-len] of myself]' s4 {1 r8 Q/ g% z/ z0 s' i* P
[
# q* _9 _2 f- `* K7 T& p6 rset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )) i' ^% y5 O, I% c- _: N9 F
set i/ h; j8 a( P4 V5 u0 D
( i + 1)

; _. q4 s  `$ g1 Z9 J( X" f- y& ~]
- i1 e; t5 n$ E- V9 D' j) Flet j 3
, y2 W6 d  |- @let sum-money 0# c, q/ }1 P: u1 v5 C
while[j < [trade-record-one-len] of myself]
& G" K5 j* V9 P2 Y! M! k, e[# B- g  ^" E5 {5 b
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)
3 k( \% N4 t$ c; K  Y: o' Hset j& R+ m$ [; Z& j3 z$ g
( j + 1)

! m7 [' G/ M5 C" s& k% c6 W# l]. w! D" ]- P1 |: N
let k 38 j  D$ r9 h: n4 k" l
let power 0/ T* N2 j0 ]! L# A1 B
let local 00 d* K6 |* a. H9 w2 W7 R8 Q
while [k <[trade-record-one-len] of myself]/ W; Y" x+ [4 Y# b* v
[
0 l0 x! c1 j7 r* Pset 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) 5 }1 X9 P* h- y
set k (k + 1). u; i6 N6 X3 k5 O/ ^/ p
]
" x5 R9 i8 ], l3 d( Cset [local-reputation] of myself (local)1 l% A* L9 i. K/ F. V1 z4 U4 k4 a) q4 }
end% N- w2 F" h3 r% q& F

$ T  R7 X* }. s& O* ito update-neighbor-total' M2 u* r4 X9 x) Z7 f3 Z

& P# E3 a# B# X- g3 B+ D8 \' gif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]0 a2 }, \1 i1 R1 H5 r! W0 S

# ]' N8 ?  u1 F- g( n- F" Q

. ]3 b, b$ @/ t% x% tend
; _& n( m; U% i# J; T9 k4 p, g& W7 a6 P7 ~2 p, k
to update-credibility-ijl : w: |* R4 R! C5 X* j3 R
( b+ @( D- `; d( G, k! b
;;
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。
- t( e" Y  N4 F- }let l 0
" P! X) c/ Q  L, O% h8 R0 |. vwhile[ l < people ]
# ]7 k2 e8 f+ M' e' r: N;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价
% u7 e$ ]7 E3 g& J[
' I4 }$ d0 h5 h  g2 Dlet trade-record-one-j-l-len length item l ([trade-record-all] of customer): ~. K( y5 l: U3 F
if (trade-record-one-j-l-len > 3)
) |/ M: u/ U- P$ D8 v8 I) D* w[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- @7 u( N+ K& x+ q
let i 3' _$ }* M* p$ o+ z
let sum-time 0
$ v# [) \" H% U$ Bwhile[i < trade-record-one-len]
4 E0 R& _% ?2 o4 K" M  D[7 B' I6 N3 i5 C% M
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
% u% ]2 t9 }& r0 J; rset i9 r1 u  K5 d! k  d
( i + 1)
: ~" w$ _  q" b9 m
]
1 y* i) _' ~, e4 |: glet credibility-i-j-l 0
6 j' \5 E3 n9 ]; Z- n* o( C3 |;;i
评价(jjl的评价)  c9 z  ?5 Y$ K  @' l
let j 3! c( i2 N1 R# x, O
let k 4
% y3 H* Y( f0 L* zwhile[j < trade-record-one-len]
. O" O" p9 ?* D[! b( F" r7 h" u& d2 K  }% ~" C
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
. T" s! G3 k$ C5 eset 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)9 |8 z' S' L, q; Q+ }- j
set j
9 }9 @2 f& }/ }+ ?; \) j. E( j + 1)
5 u0 h! O5 u* r
]# d1 A, i% ^" f" F* R
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 ))1 G0 M1 p% ]! c" N) w3 \5 E3 @
; N3 K# o% `+ a: R7 s5 i% h

' }! K, [5 O) n' ], r# X  Llet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))  p$ Z- W) g" s5 t: t. p, E5 A. X
;;
及时更新il的评价质量的评价
/ A& b: G( `8 a4 @set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]+ O3 y4 O# }/ ]" v" d
set l (l + 1)! d9 L! t! w2 I8 _7 M0 b( P; d
]; X, h- N; s& e) R6 s8 L* B+ d
end
, F% |$ t$ [7 [) L' B& E& s" T: P) J! q3 s2 z  e6 L/ _& a0 u
to update-credibility-list4 ^5 |4 R0 O# p/ l
let i 07 `! j6 z! j  Y) g6 l* F0 V1 p. W* U
while[i < people]
' a8 b' R) }* H4 b7 M3 X[/ \/ @2 r# M& b
let j 0
6 r' |5 p0 z5 M# L+ E/ slet note 0
4 k1 K( U' ], X0 @let k 0! c. t' b' X( O
;;
计作出过评价的邻居节点的数目
- @/ {: n& [0 z, ~* N1 ^6 A- {while[j < people]
* j: A! f9 y" s* Z[
+ M# o) ^% o$ F, O3 m. u7 U+ tif (item j( [credibility] of turtle (i + 1)) != -1); h  Q+ p, K$ r9 b: s1 H
;;
判断是否给本turtle的评价质量做出过评价的节点
6 V# @& g7 y; p3 j& }4 W/ q0 T[set note (note + item j ([credibility]of turtle (i + 1)))
0 ~+ S! H# }4 P; I) d8 L5 C;;*(exp (-(people - 2)))/(people - 2))]
+ x5 s5 v# O  ~4 \# b
set k (k + 1)
' ?5 E- H2 [# J% k]$ K+ ^3 Z' e; @, c, f' [- n( z( K
set j (j + 1)
, M1 d. e& A2 T% E/ g/ K- e  e]
" K) C, s9 B/ Kset note (note *(exp (- (1 / k)))/ k)4 S5 d: k. {5 D/ }4 R! ]. j! H
set credibility-list (replace-item i credibility-list note)
( ~+ X& W2 w9 G- m) Bset i (i + 1)$ Z& t9 q3 A  f- g. l0 W7 `2 r
]+ d$ E; M' J% m2 q1 C
end9 U! R; U8 l5 {& z. {

) H, e, W" _) gto update-global-reputation-list( E( Y6 r. }( Q6 T
let j 0! W$ `  R( |, T( U
while[j < people]
: Z  n2 K2 y0 V[5 _8 E+ U3 I8 \2 w+ A0 a$ ^
let new 0, y4 ~% n- @4 z7 C, D( u
;;
暂存新的一个全局声誉/ c0 }; d3 g* }' S0 Z6 b
let i 0' l" z- g% @4 D$ _8 f( C
let sum-money 0
) R9 X% B7 j/ e. A0 }, r% C* hlet credibility-money 0
& Z+ p/ _4 Z7 V6 d9 Fwhile [i < people]8 E4 L$ @( D( U0 n  v
[
% t6 m# B: l( n1 f8 C, v$ r3 Zset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
4 \* u3 v, V! D6 iset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))$ h9 Y+ {+ x" G/ u0 w/ P
set i (i + 1)+ N5 |% }# o" B& K
]
0 H' |5 y/ o# D6 s0 a+ ?let k 03 S# ?8 t9 e( z2 i# G4 f
let new1 0
$ a7 s/ {$ s8 s2 _" s9 wwhile [k < people]
9 q5 a# ~# b& A[
$ |2 D( r0 |, _: p1 l( M' pset 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)/ A3 S" d  T& S2 t" H( }0 t( U
set k (k + 1), v: k/ X- ~$ ]( g# S& _8 C+ D5 s
]$ R# s, ]4 ?, j8 i3 d; V- X; A% p
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
- V' W2 k% |( Dset global-reputation-list (replace-item j global-reputation-list new)3 m+ \) l* n8 e+ ]4 _
set j (j + 1)
6 A. k, {% ]) J( K# ?4 T) i4 o]5 N. s8 j6 o! y6 Y8 V$ z9 S
end
# n4 {/ s3 Z- c, x" k$ V: |; q* E
' O% V% p* J2 b1 l5 n" Z
9 s, {: c# H( d7 e  L: r: [  l3 b
" `& `# h- ?- C) [  i" Uto get-color! ?/ z7 ]* \9 G- t: Q0 p  X

$ m" @9 i( q0 Z, b( z: b: m' ]% Bset color blue
# A  Y/ ]; k, z$ F+ g
end8 f$ I4 D$ _4 K3 f8 ]' F
# c. F3 d) h+ m! r
to poll-class
+ E: J9 z* b$ Lend
8 Y3 b- k1 Y$ p( Z- ^3 k! ~9 Z( {! B2 _( T3 u9 _4 z( z
to setup-plot1
! [; x% P' p  t5 C; w8 N  }0 s% p  U
set-current-plot "Trends-of-Local-reputation"

& A7 g6 Z+ r# U: t0 {9 s/ W
3 r% x; Q6 r( q2 Vset-plot-x-range 0 xmax
# @" g" w& G. W0 W- t. K' Y3 `

' D3 U. P+ N7 V% [' |' T6 Hset-plot-y-range 0.0 ymax

7 p  D& G3 W; X, X9 {end5 q. ?/ `) k( n2 S1 K$ w0 Y9 ?; T1 r' l
0 O! f- D4 a: w$ B9 t5 b7 l
to setup-plot2
9 u! l/ H( X' d$ F; L1 `( f! b0 m3 w  A' e5 b0 a( {
set-current-plot "Trends-of-global-reputation"
$ [9 \7 [/ a! m7 b7 N

; a0 U3 u$ H* w; cset-plot-x-range 0 xmax
) f5 C; G3 g6 I6 p! u
; t4 a$ ~, A; l( I# ]9 r% `
set-plot-y-range 0.0 ymax
  H' F4 i$ |* h1 P$ `9 l
end5 c8 D! |* j1 ]% l7 t8 _. Y

( m8 c- l8 [0 s4 m  ito setup-plot3
: J6 ^  v# l/ ?4 f2 I
$ h. f' k' ]! O* U( xset-current-plot "Trends-of-credibility"

- t3 ^5 [* t& C9 f
( h) C( O- s  Y6 q' ~; F* mset-plot-x-range 0 xmax
7 r, E* `5 p/ H/ L4 P) [

5 l$ s' g8 w, u, T- X+ q: h) sset-plot-y-range 0.0 ymax
( x' ~. x0 T& `
end
- B/ h7 C2 p+ J# n% h3 y* i1 k$ A/ d: O) I0 J- g( z& ]
to do-plots% q4 @7 y7 d) |0 j1 |! `2 r( v
set-current-plot "Trends-of-Local-reputation"
) ?  N3 t' H  O1 W2 X; L; J* gset-current-plot-pen "Honest service". M5 l( |& X+ c; k  K4 ?- K  ^
end# D2 \' x5 ]0 Q6 J
) j: x+ C$ H% T5 D
[ 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.
% d8 S3 d4 t3 \  B. `$ |$ v  w1 i) Q+ [6 |* m
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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