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[交流] 关于turtle的使用问题

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发表于 2008-3-14 16:14:39 | 显示全部楼层 |阅读模式
我将customer设为 turtles-own,初始值赋为-1,为的是当turtle遇到同伴时就将其中的一个turtle认为自己的customer,然后进行交易,如下:
" ^2 b5 S6 C; @# nto do-business
  F$ Z* M6 L- G$ x rt random 360
4 [- J  ?9 X: t( R" k& @ fd 1
! `* ]( F9 L$ {% K9 U- Z/ Q, t% W ifelse(other turtles-here != nobody)[# ]4 q3 S/ l) ?  j
   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.
$ ]9 B; J9 o' a: I   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    4 R' Z4 H/ I) e; E
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
# e1 M* _* ]& B/ o8 z  p. I) Y   set [trade-record-one-len] of self length [trade-record-one] of self
6 z) A/ b* C  {/ k5 w   set trade-record-current( list (timer) (random money-upper-limit))0 A) T( C1 ?- l$ G

6 u1 N9 N. k# V问题的提示如下:
" c7 E" x: }( P7 _, E; J  L/ \3 k9 ?; m5 C5 j
error while turtle 50 running OF in procedure DO-BUSINESS1 ^* o7 a0 u- E5 d* Q" j& P* e! N7 i
  called by procedure GO
0 I& r2 J. U+ G/ Y4 |8 I  l  n4 uOF expected input to be a turtle agentset or turtle but got NOBODY instead.
, \0 R& R# W; L* n
(halted running of go)" o, b# ?% [. X# d, C2 r3 r9 V

' T; Y+ S* F0 j& U$ A+ \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~~
3 ~+ M. ~4 i! z6 O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
; S! H5 S- x* |globals[* F( T9 R5 `* O/ X
xmax& |6 J- x; E# e; \6 h+ i
ymax# z; |' i6 V& m, U7 I& J9 H
global-reputation-list
+ g( ^% ?7 P3 ?$ j  D
1 G, G1 f' P9 X;;
每一个turtle的全局声誉都存在此LIST
1 H3 ]4 e/ D% a' d5 P9 Pcredibility-list6 \/ |+ e' ^  p& D  J
;;
每一个turtle的评价可信度7 D" ^/ Y) `8 ]
honest-service6 M6 K4 i% P" s' s* X" e/ x  ~
unhonest-service7 [5 s: J+ C3 k7 [1 d
oscillation% i/ X- i! A+ C5 N3 F+ A: _7 g( H
rand-dynamic
/ N& y& D4 A/ h: i]3 z$ q. {! ?6 f$ x4 `
3 \* S3 N5 j" }- q
turtles-own[( k- Y! d8 Q0 v. s& @$ K1 D: p
trade-record-all( j/ ?7 S. l3 e0 ^6 I
;;a list of lists,
trade-record-one组成* d, k3 p4 `3 ~$ b9 Y  y
trade-record-one
9 o6 E+ ^  G! E;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
, u2 \+ [. K0 G) {
- n5 y$ ^% N% m  [;;[
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]]
: T, F5 u7 F  V- Itrade-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]
& ~) n- |& P' }% B+ Vcredibility-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
5 C2 o& J/ Y6 b* B  Y( q4 wneighbor-total, `: Z$ z- k8 P7 u0 w5 A, K  O2 o
;;
记录该turtle的邻居节点的数目
6 a$ R4 v/ C) |trade-time  r: ]5 \9 U: A0 {- C- H1 Q; Q
;;
当前发生交易的turtle的交易时间
1 ]$ C9 \% ^* z! x1 i. i3 ^& Rappraise-give
1 W; c4 W5 H% \4 Q& x; L;;
当前发生交易时给出的评价2 [. j$ @4 y; D1 J* r. c- K6 ?. q
appraise-receive: c; [# H% b  N* b% j) I
;;
当前发生交易时收到的评价
! u& S1 X+ L# |, Z1 z" p/ t: B0 }appraise-time
6 O9 x/ P( r) D;;
当前发生交易时的评价时间
  M8 p! y0 h/ P: x3 V! b! blocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
/ l1 I9 w+ a- x' Btrade-times-total6 E4 V  B) l4 W/ e; K  ~' Z1 [
;;
与当前turtle的交易总次数
+ ^8 ]" p8 `, b' W' X3 f# M: Vtrade-money-total( p+ K# ?4 R$ J" }% Q9 T6 P& x2 P3 x
;;
与当前turtle的交易总金额
; ~: L* H% _" w, f7 l) ?local-reputation: j" x* ~' |' ?# r) I( D% |  Z% |5 m! Q
global-reputation
0 N* M  J7 U' g) K( p. B& q2 ycredibility1 ?7 n& V1 n  s8 U$ q& f8 H
;;
评价可信度,每次交易后都需要更新
- I$ U) w5 @/ L6 [credibility-all4 R3 [" Y6 W6 [
;;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  U( ^6 `: a5 s  S' B

% |; `  ^) ?- ];;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
( V; K( w4 w2 ]7 V. j% j( Pcredibility-one% I' E! ]( o# F6 `
;;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
5 U, R/ H2 k$ wglobal-proportion
' }* T& j' i' ]* B, x) Icustomer
. K6 J  W7 Q7 \$ P5 ^) s$ \customer-no
6 {% Q8 Y" S  jtrust-ok
- Z- b9 ]$ U9 M- gtrade-record-one-len;;trade-record-one的长度
8 w( y6 @1 R% R9 ^5 g6 x4 V5 y]2 I' y& `5 o/ a4 X
6 C( c; Z( i* h5 w
;;setup procedure: z$ d4 u1 f. A
4 h( l! u/ W3 x7 {9 ^& l
to setup
! q. Y0 ?, Z* b3 y8 T3 x
( g% J* w3 z+ d; f/ a; kca
% ^+ \0 W2 t, i1 `' C, q0 K

6 @% P% [, }1 K5 G( @) v2 |initialize-settings
% g, I( g/ c9 I4 m  _5 l4 l

) c- ]8 A& g& W! acrt people [setup-turtles]
4 @5 B2 ?, I2 e, K8 W; I. n& z7 b

7 L* Z- ]6 D5 t% e5 }  }2 Qreset-timer
4 Y$ v1 Z' X6 u7 F5 @7 s! |8 ^
8 v1 y! j* W$ l: Y1 W: r; K
poll-class

4 P, B+ {! Z  V, K  Z  B
& w/ d& b. n; m* \setup-plots

0 X; s/ h* v9 h& D4 R" |2 A# [2 D: m! Q8 u& q8 x8 i9 d6 s
do-plots

+ C/ p; {: K% Y8 X. H7 i2 l( P" Xend) O4 k3 X, b* u

3 x' i( t/ g- Y2 j" c* f- Cto initialize-settings
; F6 b. A- U4 X' i# O4 O7 b  y) y8 n7 y1 F; S
set global-reputation-list []

2 ~, n6 I( e( e  y
5 D+ S( Q* h2 m6 |) X- Wset credibility-list n-values people [0.5]

: C( a2 p" F( G- w
* e/ M- v4 w/ L3 v! vset honest-service 0
9 O. ~8 W% l4 C

) d4 R2 T) O9 W% y+ J6 Zset unhonest-service 0

& G5 _* W1 Z3 S6 i9 ^1 ]2 U: j  G$ ~7 r+ O( Q
set oscillation 0

/ G+ ?: R2 m  S" Q0 R7 |; _
$ G* C: H( Q  o) W0 Lset rand-dynamic 0
" A! u! N4 J1 z5 O6 \1 J: p
end7 Q% U9 h# Y. ]7 F7 V
* ~# Y6 S1 t% k. ~" V
to setup-turtles 3 Q7 {+ d* S! u. `( R6 V9 o
set shape "person"
+ X$ X! F; q6 a1 z: I! F2 Xsetxy random-xcor random-ycor: E# L+ G' N  ^8 t
set trade-record-one []0 I$ n- d: q& u4 r& u& J

& a: \( ?: C/ W- Cset trade-record-all n-values people [(list (? + 1) 0 0)]
, l) j) f7 q* L1 n

4 `: [1 g& w; a  D1 o$ M7 s+ w, Yset trade-record-current []) n% F- H& |4 E& d/ `
set credibility-receive []" K/ i; w6 D8 ]4 g3 D
set local-reputation 0.59 l# i0 z) n- k8 _0 \6 M1 B
set neighbor-total 0
; k9 w& B7 [3 J: H( z3 R3 ?set trade-times-total 0( O. i, M2 ^) ?
set trade-money-total 0* Z/ ?( W. }5 ^9 v& l
set customer nobody5 j; b' `) T' X$ h' ]" s4 ?, W7 D0 M; q
set credibility-all n-values people [creat-credibility]3 {4 |* f; |% z
set credibility n-values people [-1]
6 Q; A% h. c3 u! a+ g) Q7 c) gget-color; a  e- ]& o! u) H  Q( K& W

( ^$ \9 f* S$ x, E+ iend
9 D$ X. m. k! I; ^- o& j, O5 _4 v0 z+ f: v* G& g
to-report creat-credibility  F0 [. J* |2 o* l( u& m
report n-values people [0.5]' g& x# o1 \* \6 C8 A' L
end
3 i* B; f% r  Z! c* D% h# N3 i9 S. o
to setup-plots5 y) G. K  r3 t! y, i  w( z8 s+ |

: z1 S$ ~& w! d% e  lset xmax 30

9 m% |  ]. k* s% Y& W; U
6 s3 c/ q4 I4 ?  ^) O% ?9 r# _3 k) Tset ymax 1.0
" h7 v: j  b  o$ i3 J2 n2 f

7 [% t. h. b' [4 ~' G  B2 aclear-all-plots

# U8 y* B! W, m# q! I1 a
0 W7 i, x0 E0 z. w8 Y8 F% jsetup-plot1
  A( u7 d3 n: m) p$ `/ z

4 R! p5 m$ _& Psetup-plot2

1 ]: Q9 H! \% _6 ~( o9 z0 F' Z: d) ~; S; A% E  u
setup-plot3

8 r: M. |! G+ y3 b# g% Qend
! Y; T7 X! c: g; F' b& n5 n( g( d1 n. U
;;run time procedures" y  |  R, k5 e$ ~$ ]" R
. @: ^& l3 f( J! a1 v, P
to go
5 e" O. y% T, @% i
% z7 ]: r% ]% j" Z/ j$ P4 Z$ zask turtles [do-business]

* M2 S7 g- U+ Zend
7 ~; i0 ^* y* p/ F& x* e" m4 h0 u
" g3 b8 [1 N0 L: R8 n! Yto do-business ' `8 O6 S( M4 I! K

' h3 U# u  {& B2 \9 A" l5 x9 M9 e1 x; w% H0 b3 Z6 ^$ J
rt random 360
: y: ]; E4 U* y  m  \$ o7 e+ }  R

) ~6 l; C& r  D3 v) _% sfd 1
: r9 k) P" [2 K2 C8 D

# X$ k* V  W/ d9 m% E  Qifelse(other turtles-here != nobody)[

& f- g# r- g, [& a! P: m4 S. R. ^5 F+ O) r
set customer one-of other turtles-here
/ {9 a$ f, U+ F( d6 b
. s: c& Z5 y5 f/ `
;; set [customer] of customer myself

) F( E! T1 g& N+ x4 c7 ^- Z0 @) |$ o; Q
set [trade-record-one] of self item (([who] of customer) - 1)( q5 h$ }+ u- A# O$ h
[trade-record-all]of self1 i% f4 k* P. X& J) A7 d6 ^( \3 p
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

$ k: [5 D7 K0 K. r1 k: H+ k
+ C+ ]. d: C7 {6 e; e: |4 wset [trade-record-one] of customer item (([who] of self) - 1)
" r/ F5 i( Z4 G[trade-record-all]of customer

" g0 {# G2 A. i: M3 X
: a) D- F+ u4 n. x8 Pset [trade-record-one-len] of self length [trade-record-one] of self

( p  P+ n& N' o9 o- l3 {7 K0 M3 w
; A+ M( g/ q: E2 P9 I1 _& yset trade-record-current( list (timer) (random money-upper-limit))
  `# R, v; J* G+ @$ S& y, o9 \8 x
' e' v1 E4 z) V9 j7 @4 j1 x
ask self [do-trust]
! g, j5 o  g) I+ u. d! C* H! u;;
先求ij的信任度
& E: }" z$ n2 N& E) o
! ^$ ~/ _( d' b4 {) ?if ([trust-ok] of self)
% D$ M7 m+ D7 G$ X2 c8 O;;
根据ij的信任度来决定是否与j进行交易[
1 q) \6 ?1 n. I+ Q5 Fask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
, `4 a8 i1 k1 B, J) F0 ]9 w- T, w6 t6 p( Q% @  A, h4 n8 r
[
. u+ M0 P' K. _( B$ J  y+ e
, D, l8 N3 b! n& O. Y) {. k/ P
do-trade

' ]1 j. L5 R, A/ p+ G  F0 M
7 e0 s9 T3 {) H& Wupdate-credibility-ijl

* |9 g6 t8 Z( W3 U3 R5 C" \8 R
, y8 |: X) W# `4 s! uupdate-credibility-list" C, A% x6 a1 |5 V: `7 L
# u" f- k2 b) s3 |' b& p4 q' z

1 a' ?) R* K$ N3 n5 t) lupdate-global-reputation-list

) {$ U# W7 Q6 C* |, U- h4 v9 Z
poll-class
; Z9 L' u0 h7 ^$ O; `/ P

6 h* \: v& A9 A1 rget-color
" W. h. f+ e* A+ C- I2 w
7 g+ l. q* D8 O+ @3 w7 {/ K
]]
9 J  Y1 q5 m9 f/ Q, q; g& v4 \3 C5 {  G* G1 F
;;
如果所得的信任度满足条件,则进行交易
3 n: q# D% i5 L+ L2 D4 ?* ^4 {! E* A" `+ k# K/ B
[

4 h/ G3 l4 B0 @, t: i0 J4 I6 r& ?% z4 ^1 i9 L4 r- ^
rt random 360

/ k9 q' \4 n2 R4 j& B. T
& k" r: r6 G) c5 a* v7 c% a( }fd 1

' ?; @6 ]+ n' G/ D& ?! i) a
) Y: M9 K4 n9 d8 p9 S2 P+ C; T! y% h+ G]
- `1 z% ]7 N1 r0 G7 J# p# O0 ^
9 f- k. P7 X4 g* L8 _5 d$ ?
end

8 L- Q5 g" U% V* B) v: J5 }! W8 E( v! W) ], o
to do-trust   \1 I# ~: w+ x7 l
set trust-ok False: Z6 G9 d- Z( n' F( y3 B/ M
: v, Q5 Y1 S' h! x
! N3 n7 h" t2 s* E2 V5 e: N/ t4 Y
let max-trade-times 0
& J+ d# x* ~% _3 s6 M/ ]" |foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
& _5 V7 X, X# Q9 n/ m" u' mlet max-trade-money 0
1 O2 N' Y1 ]5 A( o. w1 Jforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
, \. P- t6 m" ~3 Hlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
2 C' U: P) p' J, y4 h( H2 ]: D% {, f& l8 j, P: G

- m3 g& M8 O- tget-global-proportion6 F: ~# O3 I" t! b
let trust-value  V1 ]+ C5 a  X  S- p; m+ V
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 f, w2 N9 \2 p; c  Nif(trust-value > trade-trust-value)8 k. Q3 C* f- M' H
[set trust-ok true]
  E4 a/ I) r( K/ v1 Rend. `; v. e7 I2 M4 r
4 d5 D  {! {$ i  ]& l
to get-global-proportion
2 f  U- T1 E, D( M3 @" Difelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
  d2 Q. Z7 W8 H# P9 `7 E5 J[set global-proportion 0]% G* r# L2 i4 L  P2 h& Y3 ^
[let i 0
1 K) P1 N! Y9 h# Xlet sum-money 0& D+ r; X7 p' G, @8 y
while[ i < people]" Q+ s4 V& M$ m& u' w" _
[4 H- k$ G2 ?# Q/ D" A- l# D& P$ S
if( length (item i6 d& k9 w1 ?5 V/ v$ ?* }
[trade-record-all] of customer) > 3 )
9 F- Y( K4 |- E' q0 y" P6 ?
[9 Y# D; ^2 Y/ ^  y& t
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
! F, a! V% c2 i  b6 f6 N]
! J, a" y+ z5 m- G& a]% E, C8 p3 K! C& k# n
let j 0
) Q- ]% ?% Q9 U3 D9 Blet note 0( G4 {5 I5 r+ S4 k2 O( y
while[ j < people]
1 J" V8 a% M4 \8 F1 c3 q. {[. K- _' l6 n0 j) u% t0 ~. q, r- x
if( length (item i
) T. q6 u1 f5 U* W; U+ W3 H- ?[trade-record-all] of customer) > 3 )

$ L) d: N: R, C[
5 |: I7 O5 x6 x$ n, [, lifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
7 |& @, F7 P; V! @[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
0 y! `% {( v1 g' a$ a% a/ Q[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]7 U0 R0 ]- G0 P5 F
]# L: X2 v7 e0 t! Z* V
]0 K# ?( d) S4 W( Q) y- K
set global-proportion note7 i+ D- Q3 ]( B) [1 ~0 q9 G
]8 e0 Y/ q1 n7 M, j- Z; T
end7 A; K. L  i+ U# f6 w+ U/ T

. \! o. f; {8 L% o# _6 xto do-trade
( I; v! @- K. G* x;;
这个过程实际上是给双方作出评价的过程* E2 Y* K( s& s. e& c
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
* c6 [, P1 x9 a  h( l& P6 Nset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价* A" v7 X6 c3 \! I% L9 [
set trade-record-current lput(timer) trade-record-current. X( V* v$ ^6 C
;;
评价时间
% G8 b. H9 Z% L% Y6 Z, rask myself [
$ V% z# D5 I5 I  K' T6 C* p$ kupdate-local-reputation! ^8 ]; K  p& W2 `
set trade-record-current lput([local-reputation] of myself) trade-record-current2 l. n4 ?& j! a* y  o+ p. r) V
]
% T9 O" A8 e7 B% U0 l9 F( o( j$ F. Bset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
6 U3 N* C) l* \$ A1 k, F: ^;;
将此次交易的记录加入到trade-record-one
# Y% T3 M+ n) w; v4 _2 |$ ]7 S' c4 ~set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)+ u$ y% O+ ^+ l
let note (item 2 trade-record-current )
9 S6 B8 H' w7 x; {9 `0 v8 tset trade-record-current
* `; h. \$ [# O  e(replace-item 2 trade-record-current (item 3 trade-record-current))

  r; f( j! k- j) z: Dset trade-record-current
& R+ J1 x5 Y' ~0 O" p(replace-item 3 trade-record-current note): N4 m( q! H5 t) q5 x8 c5 P8 B/ g

' b. b( {5 ], E7 c4 N

  G% y7 \; Q$ c+ aask customer [' j6 V2 k- C; U1 G( p6 z! R
update-local-reputation& N) n1 H- a* z3 `
set trade-record-current
3 M+ q/ H  [6 ?8 \0 s* y4 `% D(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
2 ^/ S! t* [4 M8 Z# I  M2 n
]
6 D$ u- R# s- }6 s+ }; [' ]( [1 r& W7 u6 @8 W# {
% ]3 Z: c$ A) T6 V
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer) _% c. y$ t6 H0 D
' H5 b' Q& @, U7 t0 |- W  C4 c
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))+ H! h# a1 G) {' l1 x; R' k
;;
将此次交易的记录加入到customertrade-record-all+ N1 ]/ t* F' w: g$ n
end
$ {+ z- z6 ^# d! r! y: e# I
5 a) f! @0 ?. h, r- K6 Dto update-local-reputation
$ j: S8 Q' |/ U+ s1 R/ `' jset [trade-record-one-len] of myself length [trade-record-one] of myself; `8 G1 V+ f+ F4 d1 T* Q
% d1 |& i9 e7 }' H* t: k

7 N4 Z- H1 \+ s( `1 _;;if [trade-record-one-len] of myself > 3

* I. R' X. S% g! K, K; vupdate-neighbor-total
" i7 Y$ j$ G! S$ c6 b;;
更新邻居节点的数目,在此进行. J7 r2 ?6 N; b" B
let i 3
2 }7 n( t/ E% H9 V' T8 a, ?( jlet sum-time 0
1 _! z& V7 Y/ g  e- U7 Vwhile[i < [trade-record-one-len] of myself]- X% s0 y, n/ ?* p7 x& v
[
- c' g3 S; ~: i4 a8 bset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )3 i! U+ y. \) f. F- G6 i: I
set i5 `$ J5 [. P( a
( i + 1)
' i5 o" b8 h- g4 z; c, {
]
& S- c! `3 F0 \( f- ]7 W- j! Nlet j 3
- R: A9 F! ?8 J6 v% d# C' Llet sum-money 02 v1 q7 Z. L6 p  O: Q5 z
while[j < [trade-record-one-len] of myself]
4 m- q' B# h/ s/ V5 `[
6 K9 M8 S: g5 y: M8 g8 d( rset 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 e+ E- v+ U. O$ D: }set j
0 `7 j+ |  R1 E  A" W3 n7 j( j + 1)
4 W) v, x  D+ \# M! _
]
1 o; b0 @) z6 H7 Z, `+ u2 Ulet k 3  g+ f7 P: c7 A1 {. c
let power 0
  n, B5 M( R' u: g* v- v  E# Q$ R* rlet local 0! p7 O( S/ G& [5 V' |. [5 @/ k
while [k <[trade-record-one-len] of myself]5 v4 y  O4 H& r, [1 h
[
( {& k+ L- k0 E7 e4 O+ t3 v) Vset 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)
8 n" z, v! w) z  S; t% zset k (k + 1)
) O0 \5 B: l2 I: ^3 J]$ z( f* Y9 s1 R& F: O, `
set [local-reputation] of myself (local)$ C+ u( O! _. t" u# [2 @
end
- h8 `; J3 y# D  ?( y0 J( v# i) I0 d  Q1 K9 c8 F
to update-neighbor-total
1 {, @/ _/ m4 O8 D$ G7 O8 \+ I" w- m9 h7 ?1 {: M
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
5 @" Q, n+ H7 P" [3 m( @* W& k7 l1 a+ }/ L# s" M/ V9 ^# E. i

: o+ x! V- Q  l7 a" i$ Xend3 f- Y9 ^# B& _& C7 _0 f' N3 i- T

; j. S2 g' V6 i4 c2 dto update-credibility-ijl
7 `* G+ j2 A" U, _) x# h
$ ~7 ^! }& _3 ]- A;;
思路:每一次,当一个turtle发和另一个turtle成功发生交易作出了评价之后,就去搜索本次交易对象的邻居节点,对这些邻居节点的评价质量作出评价。# C+ o2 K$ k" T* t5 i( Q3 U
let l 01 l+ g9 G$ a6 b6 n
while[ l < people ]% w$ O# e- j: n8 J- }: K* 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- S. g  Q2 i& g6 G
[' b8 U4 Q( Z+ \! ~. e* j+ @% f
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
/ b2 I0 d3 u  E- l# {( r3 b# jif (trade-record-one-j-l-len > 3)2 C4 t0 ?+ V1 S8 K
[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-one0 H* ]+ S: y2 X9 D  A" B" `/ A
let i 3
8 N( [, k# D6 j3 u& u8 }0 @2 {let sum-time 01 E+ O) j0 u, s; L) ]
while[i < trade-record-one-len]) P1 Q0 m2 }- s! N+ y2 }5 N
[
% l) f1 [5 h9 H" [3 ~; z7 fset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )% e5 c* ?( [7 P6 H: M
set i" }; X# F0 }2 m) `& w
( i + 1)

- y) O  w9 J* Y2 x) c9 w]+ [4 X' ?1 A# N4 i
let credibility-i-j-l 04 `% L* K# ?& q( @3 p3 |# ~( [
;;i
评价(jjl的评价): \- c. e: `% T" ~- X. ^
let j 3# x! I9 t, }) x6 z
let k 4
. H7 K! G# A0 B' j. P# I5 f- S* Jwhile[j < trade-record-one-len]& A" _7 D) j" h9 g1 L
[
- g3 b* u! k9 I& |9 B' 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2 |% X7 A4 E( A9 f! p' f
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)+ G0 S$ r& z2 V8 B% w) I' X$ N
set j
! @, y% M' ~4 C$ e# U" U( j + 1)
5 E9 R7 y8 {( p* w! W4 l% u: p7 o  p
]
- W  K9 V0 Q$ a9 R4 eset [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 ))
+ v/ k. J1 t& b& O1 D) h# Q
$ n8 Y' ?0 ^( E& U2 N
9 _# R$ ^8 G5 R2 {% M
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))$ F; p3 U  u) `/ P7 r! ]3 V0 z
;;
及时更新il的评价质量的评价
; I* a7 Z: A6 B8 `" w: i) d$ uset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]1 {, x/ Q% Y9 e6 Y4 ^
set l (l + 1)
' @. G' H0 \+ k# [. x1 r]
. b# r" Z% X9 q! B1 N  fend+ i' Y: J0 ^: `3 e9 d

( z7 W$ q7 ?% n/ m; _: qto update-credibility-list: @' G" F6 j2 o- Y5 `2 {6 \* E! |
let i 09 p2 F( }5 I$ ^4 \* \* k/ e
while[i < people]9 A( z' e$ L& @7 H2 K3 }  i9 {
[) [/ R9 ]3 ]4 L0 P" s; d3 [- Q
let j 0
' w( r1 O0 h! V  vlet note 02 r# J$ y. r: z9 L
let k 05 a% w, M2 v. C9 V8 v7 P
;;
计作出过评价的邻居节点的数目
4 U" F. u  L1 r/ F, owhile[j < people]
* ^6 |) ?8 W% g4 n7 b  k[% C6 X8 _& v6 v
if (item j( [credibility] of turtle (i + 1)) != -1)- V/ S- B. u" T
;;
判断是否给本turtle的评价质量做出过评价的节点
6 F! F7 |1 i' v- S- W: C[set note (note + item j ([credibility]of turtle (i + 1)))+ e0 {0 n# L: O
;;*(exp (-(people - 2)))/(people - 2))]
0 T1 f! X' @# P' L
set k (k + 1)4 [3 E! y  t5 h& i) Y6 D
]: |: L+ F" A9 |) h1 T5 O/ |- r- C
set j (j + 1)
1 k! i5 a9 s! G0 i5 y: E) W  r]
/ N8 F; ^- j# ]2 |! e; vset note (note *(exp (- (1 / k)))/ k)+ H! C9 D, l& ^% [2 v
set credibility-list (replace-item i credibility-list note)
5 L+ A- e* M% G; Rset i (i + 1)
4 Y8 N' }6 q- g/ k/ ^/ q]
3 O  {) b' L' e, y$ \3 ?' xend6 w" T  A. h( y

2 M' I* ]% X% @& W$ Z8 s$ `, K% u6 sto update-global-reputation-list
3 K/ Q( {8 ~1 glet j 0! E' }9 Y/ {/ O# n4 S" C- z
while[j < people]7 ^6 G& z8 W7 B" x* y- D' \7 E1 A% h, t
[) M( m, x- Y1 ~2 i% l
let new 0& ?9 r, z* B4 ]9 Y& s: `% M
;;
暂存新的一个全局声誉
# {0 c, g* v2 d0 b0 klet i 0
) {/ O# t! r0 D, Alet sum-money 0
, I# ]1 {" D! P  M5 r" h) R  W9 Alet credibility-money 0
! w- g) w% {! ^! ?3 e7 Vwhile [i < people]
' m9 \+ j3 b+ c5 t$ y* H[0 }  _1 h9 [; U- Q
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))( b9 }, m0 V) E* F' X6 p, \
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))# p: [) T3 E/ {# s! M. F* S0 j4 o# M
set i (i + 1)4 k5 m, b$ \$ ^3 t) k
]
: |+ \  U2 n! q1 B+ Ulet k 0! s# Y5 R1 F* x+ }! a" [2 K
let new1 0; a0 z  x8 B7 o+ W& W# h: y
while [k < people]
9 ?9 k' U& c$ o% r) K[6 I% H0 a2 ^) J
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)
4 @" k+ S0 r; O& G. ]9 lset k (k + 1)
, N# U/ v* W. C]
5 z& [) N3 Q  T2 Hset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) : @  R. q: m8 t/ _  x, J2 l$ C" z! I
set global-reputation-list (replace-item j global-reputation-list new)
; S& e3 `/ ?6 k) D8 S  y. m* lset j (j + 1)4 M8 ~: F: u3 s% w
]
: `' M  f% I: ]* Zend
. @5 c5 [& x; }+ T
% j9 T5 \( }( A4 y$ [9 l+ _; T# X! a6 Q+ j3 n
6 n& A" z* Q( j4 q* i
to get-color
2 U; J. g. J# e7 G
3 p1 T  ~5 ]$ r% j/ iset color blue

1 A' G: R% g* }5 u* [7 {6 Wend
0 @5 U  I8 [7 r- Q; d& c5 E% D! q+ @7 G
to poll-class
9 s+ F1 W3 ]4 bend
2 V# r/ L8 X5 }: g0 c9 d. U! I) k8 {& i
to setup-plot1
  l4 N( q2 M% R" h% F) Z2 c6 \; u6 V+ i% n
set-current-plot "Trends-of-Local-reputation"

8 a/ A' q0 g8 w: x
. s! n$ i6 `' i( Z9 q$ {4 [set-plot-x-range 0 xmax

! l, l$ e6 B1 Q( t* n$ q3 U4 h7 E3 n! \9 J- b- f
set-plot-y-range 0.0 ymax
; F( W" v: g' o9 s* _. t
end& Q! d9 h5 v. b4 |/ ], M" k+ g) r
+ H1 u9 \! {- y. z3 H; \! U" L( v
to setup-plot2  F4 A; c; B% K! D. u

! x) e5 P) T+ C( ^3 ]7 m* M3 {set-current-plot "Trends-of-global-reputation"
" x0 l8 q8 H8 `; ?* I
: x6 b& `9 A: g" t4 ~
set-plot-x-range 0 xmax

% c/ a4 j" M$ c9 t
6 |' X( B9 }; m$ Z# @) C- Hset-plot-y-range 0.0 ymax
. b& N' C/ D1 l) R* H# ^' U
end6 W3 D! A" h) f& e1 z

. H1 f+ l' {" ^9 K( \to setup-plot3
8 P; E3 a! Y2 Y% H  R3 ~: _
9 X' ^+ a/ z4 J, H+ S% c$ g% R, Cset-current-plot "Trends-of-credibility"
* f; p6 K- l* [2 ]
7 X; G- y4 a4 S: V2 r- l" X
set-plot-x-range 0 xmax

: A$ X$ P  p0 d3 H4 [$ G' e! B, L6 E' b6 m0 u
set-plot-y-range 0.0 ymax

7 L/ |7 P$ y2 A, o* o' send% M. r$ M# G! C6 I5 I; {
& [, g# v! q7 J. _2 ^# S4 n6 h
to do-plots+ X3 ~9 d, Q2 }7 n: Y8 A0 x% d
set-current-plot "Trends-of-Local-reputation"" C7 D* b8 P0 Y4 F: |7 e
set-current-plot-pen "Honest service"
' |4 c' h7 @; m9 H7 aend7 W. O9 y3 l. b# Z
7 @5 H, F- t( L( ^8 ~  K" l9 W' U
[ 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.
1 B: [  l5 C* W4 X, V) Z0 m* F3 M) c& m% C5 Y8 |- y3 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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