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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:' o8 u/ W/ q* n* I& C; U
to do-business $ o' F8 ?& Y& Y# h. T! ~2 @
rt random 360
7 }+ R$ Y- f7 e5 }; d fd 1
. ^/ X# t% o" G* X* W9 f0 u ifelse(other turtles-here != nobody)[
% w% K$ Y3 ~7 w! ^' t8 _   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+ F' Y# v* y
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    8 l. l1 j1 ]1 ]
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
1 K5 ?. L& G% |, y. E   set [trade-record-one-len] of self length [trade-record-one] of self
7 e+ o' }. n4 J/ d   set trade-record-current( list (timer) (random money-upper-limit))' Z8 l; ?+ w# e7 K4 c  c; c: ^& v. M
4 r% u8 E# v% L
问题的提示如下:
, d/ f- o0 D4 L3 d( v9 T( E, i  y7 Y0 z9 g
error while turtle 50 running OF in procedure DO-BUSINESS
) b/ A, a9 N7 S6 _) E" j6 F4 }  called by procedure GO+ M. q$ b- w: e  w3 x
OF expected input to be a turtle agentset or turtle but got NOBODY instead.1 q& l! D: v8 u# \. X/ P# Y
(halted running of go)# S3 I1 g' D- n* f' r
7 w! h! C  ~4 a7 Z2 i% X8 u3 {
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~~/ |* _1 C/ T# O, 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
3 g. E+ I# e+ d7 D: A! E; qglobals[
/ I' ~4 X  l2 @# t. Rxmax& w' d& f- d4 B  u2 C
ymax/ ^$ \* {3 a* q7 ^: ~
global-reputation-list. g! `0 U, B0 Q
  U  }9 ]* s0 G. E
;;
每一个turtle的全局声誉都存在此LIST, k4 ]2 @# N: y$ U0 G: J
credibility-list
9 D) X" H6 R8 w* O1 I$ V, ~;;
每一个turtle的评价可信度
0 i& d2 w+ I* s8 |- s8 |. e! W* w' phonest-service
. Z2 _( ~5 }+ I4 v# C( T/ Bunhonest-service0 p1 c* W. N6 _5 e
oscillation
! I2 R; _& y. U* R/ F. grand-dynamic
2 g% C! P! [; h0 ~: Z2 g]: a1 H5 M8 R7 \$ \1 [8 z

+ _$ I. H3 O7 x3 Uturtles-own[
  {" c5 J5 q$ I0 ]/ U) S. c- v" mtrade-record-all6 s  I; d1 y' ^) i3 u2 F/ X/ K
;;a list of lists,
trade-record-one组成: R2 Z" Y3 l7 @6 _. K# @
trade-record-one( B% e9 l$ r& ?, p/ B5 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
5 S, d- z' ^0 D2 U; s: R, l  P
, A2 S. E  P3 Q;;[
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]]- f% j8 H1 F4 x+ {  X% |5 a
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]
) J1 i4 c7 t! |  K% Ecredibility-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  `, r4 f$ L& I/ C
neighbor-total0 \4 Z0 t; \' E) U7 N
;;
记录该turtle的邻居节点的数目% Z) `; z7 \# i" @3 \+ {
trade-time
" p- N! u4 s2 V" ~: w;;
当前发生交易的turtle的交易时间
$ d! X! ?" W7 B: ^! Wappraise-give
! F: T" f8 K" F  A! y* N;;
当前发生交易时给出的评价1 r8 H. K$ q! P7 Y( Y/ v: u
appraise-receive) m$ O/ s+ G/ N) P' D( z  D, l
;;
当前发生交易时收到的评价6 ^  V" _; t" `# s& |
appraise-time
4 ~' _3 d8 P# y; n& y;;
当前发生交易时的评价时间% R$ n, }% T% u- H) n8 |
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
2 |2 \3 i5 J2 k6 htrade-times-total
. g. k2 x5 q5 k( J;;
与当前turtle的交易总次数) L+ k1 R( l" u1 F$ ]4 }; k
trade-money-total
2 O3 k! k, p5 R5 S* P+ K& };;
与当前turtle的交易总金额: v7 m. y4 M  K* @- |; ?; X
local-reputation
: Z# v( _2 n7 A( j% c+ Tglobal-reputation0 }( ?) G6 J( r! m) u
credibility, Z7 ^, T2 r& _" H
;;
评价可信度,每次交易后都需要更新0 k& `4 L' N0 O. Q, b5 `5 v
credibility-all
7 V# C% Q8 N$ K7 t% y6 M2 L;;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
' t$ P/ y+ I% s. k
4 H6 y& S9 i: O8 j;;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 h. |+ }$ E( S& c! |" Ycredibility-one
; t" H' B" Y0 S, ];;a list [i
j1的评价的质量评价,ij2的评价的质量评价……],其中一共有people- @1 w* b8 q3 \
global-proportion
6 k& p* ]% j6 e: t6 ]$ |" w9 R: x% ]customer
+ ]+ B1 B& @+ P' T2 y1 z; t4 Icustomer-no
& R1 k# z/ M! |8 K% ztrust-ok' w5 J4 h4 t# I( b
trade-record-one-len;;trade-record-one的长度3 |' K8 t  t- B& ?6 N0 S
]/ k7 t& |& t3 l6 r0 z# B& x8 f$ v

- t: V8 ]0 H, }' m;;setup procedure+ t1 Q, e. d9 z- Z% n' Q. f7 d
& p& w. n+ x, E. L) U' v0 R5 d$ O
to setup
8 R( r" Z2 I8 K, l
$ x' j$ A. x& k0 ~# k% O9 pca

) S3 O' F1 i/ d, [  g# b& M/ D$ R( G: o# g, u
initialize-settings

8 U0 x7 ]! ]: ]" `% M) _- `8 @* Z- _. |
( R: Q. E0 G+ N- _6 [crt people [setup-turtles]
1 N; Q1 j, x$ t2 V- {+ e

7 X8 v/ w# w  v. s  A4 Ureset-timer

" V1 k, j: ~- I! Z* `: B3 W' q8 k" x/ K4 \
poll-class
/ `# [: O* D: @
5 W1 w6 j$ F: D, \  U
setup-plots
% ^/ t$ Q6 X/ S1 K1 }5 w
6 K% F  D$ R4 H, d; B5 F( L
do-plots

; j$ N) M0 c7 {3 T, }end
* y$ k2 d3 B2 z! P$ d4 s$ e- |+ v- q$ k3 H: x( m
to initialize-settings
# U% D4 m" Q9 B' _6 P/ d
/ Y$ W; |& R2 o9 h9 W+ o% pset global-reputation-list []
0 D0 `+ i4 c9 c, h6 `3 V
, _$ H1 C, o- L) A% w1 \9 K& D' a% q  T
set credibility-list n-values people [0.5]

  a" K/ k- q, `! q! ]
' X6 Y5 Q% V, F' k: ?: |# Aset honest-service 0
; |! Y$ J7 p; }3 Q; Y" w

/ N8 k9 Z) X, i+ Pset unhonest-service 0

0 D6 @1 v5 N$ G2 ?. w3 a9 I. w  B1 ^" v4 p& r
set oscillation 0

9 N8 P& t6 x/ u7 Y  H$ v& W0 V
) j: Y+ x5 Z& P3 @' X( {! gset rand-dynamic 0
! w! q  q* t# C% V% w- D3 k
end8 L$ m  v3 s1 m: F" Z
, A& w' l& Q, B$ [$ S( L0 W
to setup-turtles
* q) x; g. N& h6 Kset shape "person"6 {/ {! z% Y& k
setxy random-xcor random-ycor' C" R& z+ }& |! v$ I" u; }' u/ {# w
set trade-record-one [], P. k% Q. C1 u2 k2 t6 ]' v

; L' n" B( |, _7 V: tset trade-record-all n-values people [(list (? + 1) 0 0)]
# |0 F  P% Y' g0 A7 x5 A

' }) z) r( c$ d" S+ Uset trade-record-current []- Z" W  c$ k0 F
set credibility-receive []0 E% }. l/ F6 q4 i& \/ S: p" F
set local-reputation 0.50 c1 K7 e+ F% a+ S# J( f; c& o
set neighbor-total 0
; j9 |0 K! V9 Z7 A* Dset trade-times-total 0
: r* Y4 ]. ^- t! P4 Bset trade-money-total 0
( F. B* z9 q5 kset customer nobody: k9 b2 C. c7 G- L0 a2 I5 k
set credibility-all n-values people [creat-credibility]# j! W' ~- V9 ]! ~1 H& b' z$ t! ?
set credibility n-values people [-1]
+ t! S* l4 d: U4 k% ~get-color
( W5 N$ J* L% J

7 \( s( d+ Y! u9 x0 q5 Oend" V* Q2 J, W1 e$ D

4 i2 [# m1 V2 ~* W. a2 Pto-report creat-credibility4 F* _* Z+ m) b  c6 B
report n-values people [0.5]
9 a% {) c, D7 w5 e; _  }end
% }) ^/ w  P# M9 u3 G/ V: ]" m2 I4 s6 G. P$ Q- }- k; L
to setup-plots" ^, s3 {: S  k! A% t

; \2 I! }1 C8 u" t8 Yset xmax 30

( R  G& P1 e9 t9 ]. H( R' ]- ^/ c: {( U
set ymax 1.0

. i6 d* Q6 B* K: r7 n- ?7 U$ J8 B- o
% U8 o- ~0 D. D' Y9 h; v7 vclear-all-plots

3 I: [7 n' Q/ S7 e, I2 S. a0 b$ W1 W) c0 r
setup-plot1
7 k7 _/ C. u/ ?) {" r

+ F: g7 ?8 o) c' E. s+ n8 @2 Lsetup-plot2

, ?; \' L& A/ g& M
! E1 ~/ J* M* P8 R$ H, ~0 lsetup-plot3

# V/ K2 Q" H) V  {8 Xend
' D- F% u% g7 F6 U& c# e6 d. G0 R3 M1 i" Z* W, Y
;;run time procedures) {3 u* r/ H+ {
0 B! N' A, h5 [0 u: [0 V# D0 K
to go( @% y+ P( W6 o( w- a

$ ~2 a9 r/ A' o4 j* a3 H$ m; }0 sask turtles [do-business]
7 P4 ^& |# p' C, ~4 M0 a- U
end3 n- W) ~  E( s( z) ]' c

' M% E; T# C5 X3 d& c7 xto do-business # k. _" H) |& i& t
! M$ e$ G1 @$ a( r% u* F: }- u
+ v* \8 x/ A- C: ?9 g& T) M9 ~
rt random 360

3 n+ J1 P& ~( e, H8 l+ @) e: f& I8 J$ E, J  H  G
fd 1

6 I" P4 L- h2 o$ @
6 r# x, S; o: |* y# @ifelse(other turtles-here != nobody)[
  o" f  Z2 O3 z0 a7 o2 K

) K7 l. {  l4 o8 R) Lset customer one-of other turtles-here

. d) `) r$ G+ i( r& q, o9 l
; a' }5 H% T* ~, ]4 `. g' s, O0 d;; set [customer] of customer myself
. `7 V& `6 i5 D7 k2 [
( I6 A' Z+ c" W+ O* C9 l4 E6 d' b7 H( L
set [trade-record-one] of self item (([who] of customer) - 1)
8 O* T, @4 g  A. T! p+ J[trade-record-all]of self4 m$ |" Q7 J1 v8 S
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

2 o! Z2 j# c0 k# c
0 g) M# Y2 s+ V( y) Sset [trade-record-one] of customer item (([who] of self) - 1)
' P7 e4 A5 r/ |- |. c; m! k, D6 I[trade-record-all]of customer

4 w: L) n8 |/ t0 r' X6 k7 g( _/ }+ I0 s- N
set [trade-record-one-len] of self length [trade-record-one] of self
1 c  e0 X3 C4 z% c- L$ X) j# P

9 U2 X4 i7 P5 k# _  Wset trade-record-current( list (timer) (random money-upper-limit))
$ \6 @4 I. U8 L0 k, l' G2 d
1 R" L* i4 M$ ], z
ask self [do-trust]
  A. e. U$ {# L# @, y; L;;
先求ij的信任度# v# `& O% s7 y6 N* o/ F# R5 x
4 _: B1 D9 \' j& n  |# w- q& j9 L
if ([trust-ok] of self)5 J8 \& g8 b7 r# W* t/ Z
;;
根据ij的信任度来决定是否与j进行交易[! w$ @, _4 O! b
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself0 [3 p. C* c( s3 f
! j3 X/ j9 F) c- a4 Q
[

+ i% p1 E; R. a3 }5 W8 M& q: C
* g( q6 Q/ ^3 F) b9 G, a1 V" bdo-trade
; w6 m! }  x1 t) T, ^$ W

  Z8 y/ f% h8 p% dupdate-credibility-ijl

9 m6 N! ?- C8 w5 n: }
/ ~" }8 _; n/ J; S( v8 e% ^update-credibility-list
) ?6 j" }- e' T$ ]" V+ y" W
0 s: k" o4 }& ~$ x
7 d" Y% m' q" d4 M% u' I" f
update-global-reputation-list

8 [; v5 ^7 [1 G
6 }# k* }) K0 ]  l! Y- y8 E5 u. ppoll-class

8 h/ Q4 O0 v8 {8 r
* h% @6 x1 E; A* Uget-color
2 u0 E( b; q3 P5 L

7 q9 [7 o4 A4 T# `0 f]]
4 h/ u$ Q6 g; b6 o) y
( p8 j, Y' f- R( A( W5 p2 d;;
如果所得的信任度满足条件,则进行交易
2 P; ^  \8 Z4 d2 X" A# T4 o' C1 }' O1 E" ~5 W
[
. y0 s' c& e; [& Q: u

( v9 o8 e1 N8 C5 ?$ E6 I' ^rt random 360
  b) F9 ]1 U3 B& r

! }. E3 g* M+ R, Y% sfd 1

  n& l7 b) c* h% L, f& [" v) d% u. Z6 S' y6 L/ y, i
]
; h/ L# Q- L& Z8 b* _3 K
4 B( s+ s4 ]! y4 `
end

4 w; Z3 w, ^- w3 i  B# b0 i# B3 Z
# E) J, P5 Y& Q) C$ cto do-trust
9 B! r. g- k! R" Hset trust-ok False9 w- s3 F1 t3 |: |& L" J7 Y. O
  j; D) @2 M/ E0 y
$ e$ T3 B$ U2 B5 f7 e0 w
let max-trade-times 0" p- p+ a4 z1 _. M
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
! U3 K2 ~) C* Elet max-trade-money 0
) s% c1 a: r- D4 ?, @foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]. A! X; |8 ~( V2 b. I8 V
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money)); Y4 ]! w8 y; e2 G* y. K5 b# B, ~
/ b+ ^/ n6 A7 H

8 r& T9 i8 E; T, h; C) ]$ Rget-global-proportion+ d( j# P( B1 d) W. F1 a
let trust-value6 |6 s6 M# K8 ]: `8 k
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)

4 B8 d2 j4 e8 uif(trust-value > trade-trust-value)$ a8 V: {! b6 g4 @7 l0 z
[set trust-ok true]" g7 v! O0 n& }5 y8 ~3 q2 Z
end
. Q3 j* V" k( m2 l0 B! R1 F/ P: O4 R8 M" Z! M
to get-global-proportion; K- Q* ^5 G. A! U6 q  H0 p
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3). G) I: M/ B, q% p( K& F( x
[set global-proportion 0]
$ \+ U3 _8 }: m: ?: _3 l1 Y[let i 0
, c- A) C7 G" z; `5 g" z+ alet sum-money 0
; q* {. P* b- l9 N$ a" j) h9 xwhile[ i < people]
1 o) w) Q4 J, |[, }( F2 r2 d6 T# @& C
if( length (item i* C2 u# W& L/ j% `
[trade-record-all] of customer) > 3 )

  z9 n- J* w8 T6 Z1 o[+ e7 d. ]& k; }: x
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
7 L3 h! a$ f& s]
0 }" o* x! k0 M8 n& ?7 ]( m]
! a! w4 f7 M# Q  E% T8 x* i! [% H5 Vlet j 0
6 o4 n5 h$ Y1 ^( N, L+ C& Plet note 05 D  \6 J: v# J
while[ j < people]& l  Q. D# Z1 E6 V, `  g
[
5 E( b. t: a9 `6 C. _' Iif( length (item i
) i3 B- c8 ^4 @4 o* v& Z[trade-record-all] of customer) > 3 )
- g3 }1 q4 b+ e: P. e& J
[3 F5 j' ^: M( t" x9 V* E
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)% m; N' m& M( z& V
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)], T& ?9 Z/ Y+ p& T2 Z4 q
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
  m' Y2 Y7 \/ R]5 I% E: S9 b0 ~
]5 \2 Y1 t9 O/ S, O. A+ q& J! _; N
set global-proportion note$ M" }/ Y( m/ d# a; ^$ u
]
, W8 j7 \, }9 @8 Send* y$ ^- T% H8 ~! t  D( W9 U
0 H, W, `3 X* N
to do-trade8 q# A7 I# `7 a5 L4 s* b% f
;;
这个过程实际上是给双方作出评价的过程
, N( F. |/ W8 N8 O7 s0 Y3 w3 q5 bset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价% S) g& o, @5 x! y$ h$ n
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价8 R+ P4 M6 D+ E2 N, F
set trade-record-current lput(timer) trade-record-current% g& R$ L# W2 ^% q* G: t
;;
评价时间
" X8 E8 F( p5 Gask myself [
: ?$ \+ R0 V5 kupdate-local-reputation, C! Q- x% W" B2 w; J+ U& [
set trade-record-current lput([local-reputation] of myself) trade-record-current
/ j* W+ h  J' `% w]
, n* D& M: B$ lset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
) j5 D: l8 s3 i' s$ _;;
将此次交易的记录加入到trade-record-one6 Z" T9 C% R% O
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
3 b7 _# V6 w# t+ w% O  z; nlet note (item 2 trade-record-current )
$ W. G/ C2 m4 i0 K# Gset trade-record-current
( Y. b5 C6 E, {& D' O; n(replace-item 2 trade-record-current (item 3 trade-record-current))

8 Y9 s7 T) W& |set trade-record-current
2 e; _1 D* L1 w2 ^- O(replace-item 3 trade-record-current note)/ d  c* N6 s. }
6 n0 K. N/ R" z/ U  K
% i' I% Z! C( u0 F3 y( f8 p' B
ask customer [' r( x0 g% o  a5 p/ l: \2 I
update-local-reputation
' c- ^, G  T9 j& E4 jset trade-record-current
0 ~; \8 J+ q. N( C: X(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
& `3 P: L7 ]+ I& p
]0 J" O$ ^, x: a( w* |

7 _) f( K0 l4 R9 |+ x, f" r

/ f: C$ L% s5 p  \+ \* r* A2 v' Qset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
- k: w" v/ f8 F' x

0 m3 ~4 r  C: l0 A- H$ B3 A  m+ W8 }set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))' j7 ~! x- E* }* R
;;
将此次交易的记录加入到customertrade-record-all$ Z& m" _) [7 x% @7 ^: d
end$ e' f& k& l0 [/ f8 ^" Y

* J: e. B# @* rto update-local-reputation
$ [6 ~3 K) g9 ~set [trade-record-one-len] of myself length [trade-record-one] of myself4 O% C3 B& s' O& \- ^
+ W! R+ D( G+ N. M2 e
/ O  g# V+ e. s- k. j' }4 [
;;if [trade-record-one-len] of myself > 3

5 t2 ~! \8 o& G4 D3 v9 p4 j5 Rupdate-neighbor-total( R( n4 {7 G! v
;;
更新邻居节点的数目,在此进行
/ W# U) \) ^1 g  B8 o! ]let i 3) {! q; ]; C7 u5 v& j1 p1 E% l
let sum-time 09 ^/ f" q/ r3 A' r& F
while[i < [trade-record-one-len] of myself]6 O9 T# S8 c; x7 V6 w( q
[  `4 P! S' u' b  d! C- s
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
& `6 w* T0 t: e7 E3 u/ c  P. xset i
* j; |" N, J6 T; h& h( i + 1)
( u4 d# f9 g/ s1 p  {1 b' |5 s
]
. g' G! T: k9 [- h) M) ~let j 35 ^  {! ?( P, K) g8 E7 a5 u# \6 s
let sum-money 0
# h0 Y* {* M' }& Iwhile[j < [trade-record-one-len] of myself]0 K. M4 X0 o, l" U  C3 K5 A7 x3 L
[
0 W/ L6 c% u  ?: C2 N4 I% `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)+ H0 W! L% U& j8 d
set j
" p: J" ?( W( k# [5 ^7 m( j + 1)
! }7 {4 X$ h0 s8 w( ?: R
]
6 c( M/ |) l7 B- i9 U1 slet k 3: q& {3 J! o- N9 L7 |" L
let power 0
& G3 o0 m* P$ z- Ulet local 0- R' F4 Y9 p" _6 ^+ b( `
while [k <[trade-record-one-len] of myself]
# n/ C, b4 _5 k& h* y[
0 b& g+ n$ p" E7 v2 rset 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) ( a8 R5 P. M8 ^! }. U
set k (k + 1)" e  ^1 K3 p- s% W; t
]1 A7 N* O( Y$ j2 z
set [local-reputation] of myself (local)
7 ]0 b" I% P) Iend2 p  I* L" j2 }) b0 u0 f. D

1 O3 ]2 D$ S# T) p5 S3 vto update-neighbor-total, Q/ a9 T: ~7 g+ Q' y
5 ]+ S9 C" g$ q
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]! z8 r. O* F% S0 U

% m8 B0 V" T" V( C3 v
, Y5 h% \( q) p, x
end
& n) ?# J/ y& Q$ `, k
/ ^% N8 O6 `5 f- X- ~* oto update-credibility-ijl % z) Y* S) F. j* S: S% z8 C
. Q( M/ H' \9 O
;;
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。. y, A% u0 a: I3 d4 s2 R
let l 0
! Y: k" Q* J% e- L# lwhile[ l < people ]
# ^# F$ D& A; N4 z, J! r8 Q;;
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
) V; }2 |  u4 r/ U* ~" S[
: O4 F4 O+ Y1 h! d7 Nlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
8 K3 \2 j! [+ q0 N% H3 N: P" i! vif (trade-record-one-j-l-len > 3)' ~' Z: h0 R$ }/ U& I. r0 X  u* 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
) s2 Y8 T; m- e, a' C# h  Ylet i 3: ]4 s5 r1 s& M, q! f* Y, E
let sum-time 02 d1 q! d, o, }8 g
while[i < trade-record-one-len]
- f: Z+ o& |1 x% Y; J9 O$ G( B[& u8 c) o: U- g6 |  J
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
% b  z" {; j1 d! E, S2 \5 X: a* tset i
0 s3 Q4 E& V/ P, x$ k( b( i + 1)

0 R& e9 M/ S! p/ Y/ }6 O% E]
3 G9 Q! h$ S- P7 X/ q9 g4 Ulet credibility-i-j-l 04 Z8 a) l. ~9 x  m0 ^/ @
;;i
评价(jjl的评价)
. ]# S4 i& `6 ~+ j. K4 H! I2 qlet j 3- z5 e$ l8 V5 ~8 m, E) ^3 r* {
let k 4( a0 \; ?& |& L( Q! \2 w4 X
while[j < trade-record-one-len]  ^0 G  E8 c, v& I
[, a+ Y8 z+ M$ s( 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
0 Q% c" T9 o/ T5 Qset 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)
( s) ~$ S4 k# I* [# a& rset j/ H2 L4 ?1 A, N7 ]  }' q. }
( j + 1)
2 o3 W' i; O( X! N' H: \+ Y
]
- P4 ]" W$ f. b! X  xset [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 ))
) b: R6 f) M5 k8 c" V1 A$ ~# r- n4 ^* g. @+ x# }

$ z2 w! x) H) U. B# r( c$ Slet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
5 @2 a- P) X# }0 q;;
及时更新il的评价质量的评价
" f% u, a5 l5 mset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
7 a* o& I% H8 U$ l2 O# F9 c% Pset l (l + 1)3 K5 ^9 _* \5 v/ h
]
* g  b" E2 f2 R* a! C; l5 Fend3 X" ]; Z7 {7 l- e- G

: Y# ]2 T: s0 Y4 J$ x# i2 @+ M! g1 I- Mto update-credibility-list
3 N- f( D5 r6 u( I/ g7 qlet i 05 r8 w) c. E  }/ _) m
while[i < people], l4 Y6 S" T& Y1 H( |
[
# N; n  F# c# a4 t3 I$ Slet j 0
+ Z& H1 _1 |: g: j( n/ C8 T) Qlet note 0
* k4 U# H; Y8 xlet k 0
* ?0 k8 p3 k8 z3 E/ J2 y6 F;;
计作出过评价的邻居节点的数目
8 F8 k: n7 S3 T* xwhile[j < people]
0 b8 n: R* j7 i8 S7 T  n0 d+ a[
- M. ^8 Q" C/ Z. W8 zif (item j( [credibility] of turtle (i + 1)) != -1): s! M7 |$ ?5 d5 P! N
;;
判断是否给本turtle的评价质量做出过评价的节点4 {7 q  m& j* d5 ?
[set note (note + item j ([credibility]of turtle (i + 1)))* m8 X& _0 |- W0 ^& n# i8 u4 w6 f
;;*(exp (-(people - 2)))/(people - 2))]
7 @* A9 Z3 f; {
set k (k + 1)
4 ?, P; T! u( N0 a]" P8 g! E! ?- H. p% ~# H. K+ H
set j (j + 1)7 ^) a0 ~) e% e+ U1 g/ w$ d# W
]
: o" @8 j+ R' e3 `set note (note *(exp (- (1 / k)))/ k)/ T  V- [' [8 {
set credibility-list (replace-item i credibility-list note)9 M( y* _0 l. O& q9 y! i3 Y1 L
set i (i + 1)
6 n- B8 A# Q- L- d: p. X7 x]4 o2 M+ R9 K2 I; Z, f0 `+ g: }
end
( q  @/ K7 b7 C" k1 v! i' }; M& V+ p' p0 A- M, f4 G, s
to update-global-reputation-list
& g$ l/ Q7 z. U* T, {let j 07 W: f. f% S: \: Q( \
while[j < people]$ w* N( n* f$ n1 w& o' i. p; h; s
[3 R% |: O& b* p. ^( |  O
let new 0
' ]8 E- X' N! H1 Z;;
暂存新的一个全局声誉
7 \; ]( F/ W4 j% Y, `let i 08 R! a3 o, U1 |* o% ]
let sum-money 0/ e; [9 x% L4 i* c# _" K
let credibility-money 0# G( r* G( A& P& F2 \3 j
while [i < people]% O. P/ O! \- n$ _
[
  A: D! \" W5 }) j1 W1 p9 Tset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
2 R0 E2 ^  A0 x+ X0 P' T9 J! K: Uset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))* v. a8 Y6 L, O* ~  P# S4 W
set i (i + 1)
& R' p' v& p1 g6 t$ r]
7 C% r% s+ C6 I0 B1 rlet k 0
7 j6 @& g' O( D5 m' Klet new1 0, n/ K# [) y1 D' u$ A' ]2 n/ a) n
while [k < people]
, [6 p+ f% ^# H6 G[, t5 F, |/ X5 }( ~8 m7 M
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 Y) m/ ^. y4 ?6 ]. b$ ~set k (k + 1)9 @: t# I" f5 U/ L2 `1 S
]4 v+ h6 |# ^. @3 x; k! q
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) " C, \: R9 x9 w9 _( n4 M: h
set global-reputation-list (replace-item j global-reputation-list new); [: n& [& @9 {
set j (j + 1)/ q  [% R, B8 D1 f! d
]/ h4 `; u. T9 N, A. X, a
end  @2 X+ i6 E9 [# m
( F/ S9 C& x: b6 v- P3 @3 \' B

& F% h- A( v/ k8 n" Z0 F) I
$ ~2 ^  W  B/ d1 a& r- j, g3 jto get-color( q( }# D) R2 G% P% L

1 C$ r7 k/ s0 W$ P0 wset color blue

) g6 o7 W4 d5 D% fend
8 P1 r; T. |! s1 v2 K3 I/ ]5 W: Z4 e, k& a$ L; b" O, c0 d, K: ~
to poll-class/ A" S4 g. V  B# n& @( D
end
/ D$ f- Z6 F" }3 V& R& a: h" X0 A: h9 ~. }
to setup-plot1
4 J# ~+ D% q" a% j2 k5 N2 |) x5 n) i+ k" @$ Q" V
set-current-plot "Trends-of-Local-reputation"

  F6 b9 v0 [' A3 ~2 h
9 Q  m! n) U( u& m) Q5 zset-plot-x-range 0 xmax
9 T7 N. ?& U8 R0 O

9 z4 M+ e5 b- O; L- h2 g0 s+ p0 Pset-plot-y-range 0.0 ymax
$ K1 e2 I% d% D/ v( A
end: o" v- t# R5 s: p

* r- V% E8 Z" y/ v. X4 _to setup-plot2! Y6 g& [1 K! E# j/ W

1 p/ v+ y, o4 v9 [- aset-current-plot "Trends-of-global-reputation"

' s( j, I/ L5 J
2 v0 ]8 c$ q# I: H% t' v4 t$ {3 Yset-plot-x-range 0 xmax

9 y0 I) K$ Q8 \8 |3 A1 U
* F" @5 K2 K- g0 J' q4 G0 `set-plot-y-range 0.0 ymax
" D8 W% W, B) ~( Z
end) A. N) L# N8 Y

; L: E+ u  q' H# l2 ]7 y( {# hto setup-plot34 ~1 z/ g, M) l$ q9 G1 w

/ Y- M2 j4 q+ J3 t' iset-current-plot "Trends-of-credibility"
3 k9 _! S0 A4 ^# O6 c

4 o3 ]  q3 H! ~: h8 bset-plot-x-range 0 xmax
- Y# w# W, X# Y

) q7 W$ }: D8 {5 Lset-plot-y-range 0.0 ymax
* U9 ~- t3 Q  t
end. G, H1 ~3 K1 X2 Z

) C& w; r% N% T7 S7 d/ c( Hto do-plots
+ P0 G7 W: D2 h, @set-current-plot "Trends-of-Local-reputation". ]0 G- L0 @5 H2 i
set-current-plot-pen "Honest service"3 x( L$ M. R$ o) d7 `
end
) h( i& b. b- _, o% b6 L& V: j6 x- j, \0 C% `
[ 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.7 `, L* y- _* L- B  \% o5 g/ X5 k

3 [2 n/ p* M# b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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