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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:% V8 ]3 w. I: _
to do-business
, _2 K  c/ ?  V1 c) e0 c rt random 360# q" h  [" j0 ^) t1 N7 C7 Q* t
fd 1
+ \; R" @3 ?) v- u! | ifelse(other turtles-here != nobody)[5 W5 a7 W2 b# V/ W
   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 _( M* ]! K/ E2 ]   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
( Y6 J; g* g! T2 |8 F  U) H   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer, r8 t) n* J2 A0 o
   set [trade-record-one-len] of self length [trade-record-one] of self
+ m2 V& @& a' U  H$ |6 l   set trade-record-current( list (timer) (random money-upper-limit))- @- Z: f5 c1 j+ x
+ l, _# m3 c: D% v
问题的提示如下:
( {% q; a+ ?$ \2 _6 ^+ l2 [  g7 G( d% ~# g- U1 F+ [
error while turtle 50 running OF in procedure DO-BUSINESS
+ f' _" ?3 r. Q+ v5 \& G# R  called by procedure GO5 e- O, {& O) P+ Y
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
2 L* a: v, t/ ~0 ?0 b, C
(halted running of go)
% U+ Z# I" n* [2 q. ~# x% i
5 P. {- ]/ v7 f- _* @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~~" w% F% T$ _1 u- L2 j
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
# z9 _" l' J7 {+ J2 gglobals[( V8 j& I9 Z) p  c: b
xmax- z% t4 c( h/ Y4 k& z
ymax% G' V+ V1 {- s& n- V: v6 ~& o9 k
global-reputation-list
7 @" n! r4 w( \- E$ j
, o/ n, ^( L! S0 p; X;;
每一个turtle的全局声誉都存在此LIST
% z/ S( A, m, Jcredibility-list
1 j' `2 R- u# G;;
每一个turtle的评价可信度
+ O; i, W4 f7 C' @2 W) ^9 o* ]* }honest-service( Y7 n! m% {* O. m
unhonest-service
. |/ Q, m2 l! noscillation5 M+ v6 W: l) J  J) g; s
rand-dynamic/ S- j6 U$ `( U* F3 n5 @5 ^7 l& y
]
6 I, f. p+ ~- }$ w- \" ?; _" r) [, B' S
turtles-own[' }! N  f. f; Z) b0 F3 V- O
trade-record-all
$ Y1 g* P' i; y$ k$ u;;a list of lists,
trade-record-one组成
* L' N, U/ ]- t. o& M. i7 jtrade-record-one
! t! G- x8 P0 t, ^;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录  R+ G1 E2 C2 b

+ m, f" x3 W. V- m2 ^% v1 y; n;;[
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]]
& D7 \9 O5 k3 ]6 O( Otrade-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]% P6 p/ [+ g9 k/ @4 _& G, X, \; ?6 s
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
+ t/ E. u( O( J1 J  k: kneighbor-total
, K- l- {, I4 C& z+ j3 F+ y;;
记录该turtle的邻居节点的数目
- y* G% o6 a: d/ C# V" Ptrade-time
" n: G+ e0 Q! O) {;;
当前发生交易的turtle的交易时间
; R1 b  j2 L4 p4 Cappraise-give  }2 E9 I( F$ F4 g7 g) m0 V
;;
当前发生交易时给出的评价9 i- Z: ], _; m* @- A
appraise-receive
! j8 D  f( E8 \, f+ x;;
当前发生交易时收到的评价$ W0 R# D6 k+ K2 y& V
appraise-time
7 T  N' ^/ N6 q: j7 {7 C! u* _;;
当前发生交易时的评价时间
4 ?* _( x. x" A/ F+ O$ ?local-reputation-now;;此次交易后相对于对方turtle的局部声誉. E! m+ q4 y( E7 h3 H
trade-times-total
/ w( l0 W! S; i! y0 H0 z. F7 \;;
与当前turtle的交易总次数
& F: [; `# U0 W) `trade-money-total
" q# M" F9 E& P: V1 n;;
与当前turtle的交易总金额
: y& h! a6 O5 |& k: x; N9 tlocal-reputation
1 S1 Y. n. N! r8 W5 eglobal-reputation
$ ?: ?# r. \7 B, d7 v) s$ \$ dcredibility
! W& e! G% S1 q3 P' s;;
评价可信度,每次交易后都需要更新
( ?% |- D) P4 j- i* |0 Vcredibility-all
! l* r4 v) ]. C8 m2 k# e' d;;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 o, [( z8 T( G8 L1 O
7 n# J5 F0 ?) Z. |/ g2 d( A/ v2 H
;;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" |' _1 s' w! _
credibility-one
% G+ z7 X7 M$ ^& \;;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
. Y8 N8 x/ T8 u) Rglobal-proportion
& N) P8 R( C4 w) o& h) i0 {# |customer5 ~7 x! m# z; x! y7 n- p+ E
customer-no# M8 C4 R, D$ D, @+ Y
trust-ok- N# [- K: e. \5 Q7 ]  x3 o
trade-record-one-len;;trade-record-one的长度
* Q2 o2 S: ~: [  O! G  z]
" U/ @4 \- [# ]7 l7 w. I8 K+ m4 A6 _) T% x% @
;;setup procedure' r% u$ _& U4 n1 k  l# K

2 u# u3 @, }% ^7 g( Xto setup
* ~6 A; [% T* J! y& k; c6 J, F5 L4 ^5 s9 h% g2 w
ca
: P4 i  B7 `9 N; n
, G$ c0 i; H9 M0 H: e" H5 e
initialize-settings
* h3 }; m5 U; k9 D/ N
6 ?  H/ ]! [& @. B4 h& H
crt people [setup-turtles]
" s  N% O& v: M6 k
; }! _9 y; \' h3 p% m( P7 F
reset-timer
& J& t+ F1 E% b0 N5 i

+ r" \+ y. |  }5 Z, P3 q0 Fpoll-class

( o7 c& a: ]% t' Z% I0 E) Y9 B" R2 }2 _
setup-plots

# A9 U% k3 [5 N; Y' _
8 h: B2 \9 t* y! Udo-plots

  K: U: f+ ?( K* S& u5 D; p) iend1 K, |3 P: i2 y6 m9 r7 G2 q9 q
  H7 `# [2 `& ]3 t6 M9 @9 F, A! c2 Y
to initialize-settings  T3 p' x# G0 L- z: O. W

( \7 v% T: l  h5 Z" h1 ?( dset global-reputation-list []
. n6 E  H0 e# s/ {( J, c- `

# k( a+ T, M( U" T4 S+ Yset credibility-list n-values people [0.5]

/ E: w4 g& I- B0 E
7 ?+ ?: e' b+ t. F& Dset honest-service 0
0 O; ]: x7 R" k( r) G( w* P& W! ^: l+ ^
6 M9 w+ n5 x) r- V8 I  F
set unhonest-service 0

5 k. H( k3 b8 P% v' P) n  Y+ P+ c% `7 y, d- H9 ^  T
set oscillation 0
6 n2 g% Q% G3 O  U
! s  A8 B9 {' V, [
set rand-dynamic 0
* U2 P+ I1 y/ X5 E8 R
end
0 F  K- i0 P) C! J0 x4 ^6 a! e% m, U1 n; N* Q% t* \! T8 q& q
to setup-turtles
1 r# n$ Q' N) {7 D0 c3 Z/ Lset shape "person") G; L" V0 M, F
setxy random-xcor random-ycor! G+ ?- Y. e0 I7 q4 L
set trade-record-one []5 j0 |$ q/ a, z& f. x/ ~: g3 C" r
. Q: K1 y- P1 N( v0 L5 k
set trade-record-all n-values people [(list (? + 1) 0 0)]
% s) N. }! t5 T& u

( ^, c4 o* H  G4 L) c/ N% mset trade-record-current []
) ]7 l" ^1 G- [, m8 }* i' L* V) [set credibility-receive []
% J& X1 w, F3 Y! k6 R% Z' Vset local-reputation 0.5
) y$ p$ Q( D* U: v3 j% Hset neighbor-total 0
$ n. k* J, k! Z6 [) @set trade-times-total 0; m& c% R/ y9 s6 ~
set trade-money-total 06 j* H# l" S% l7 a: s7 z6 Y2 @
set customer nobody
; H* p* R( a, U# o4 j  P, t6 T0 Wset credibility-all n-values people [creat-credibility]! X- ^: h8 l3 u, C2 I
set credibility n-values people [-1]
# m* M' ~% z7 a1 Cget-color
5 J/ M6 Q7 g* O" B4 v3 q7 O

. j  s7 w% U1 \2 E7 i) Kend
- p) c2 r! J9 P, w% Q& L6 Q
# t8 S  S$ S2 J" Jto-report creat-credibility! p- s( e8 C! x% i1 N) r" w
report n-values people [0.5]
7 z, n  I8 ^% h3 A/ h/ Eend
1 I1 m* O# X0 I8 Z  F. I
. k1 p& D. p2 ^- U9 l& K( O/ Kto setup-plots4 v0 u1 V2 L2 X" H; Y  W- H

. D' N& {* _; H3 Sset xmax 30

; y% r( H$ o! L& ~5 \
: |8 {; F9 {6 |2 z  e  {set ymax 1.0

5 g+ w( [" K7 s! `1 Q+ i* ?
+ |% v- F9 r4 n; X' A$ Mclear-all-plots
, R* `4 t3 A, ?& I$ o, k- e
% K& {: ?2 ^3 T/ B8 N8 j/ C2 b1 G
setup-plot1
& {' y( I0 r. h* ?- D
- y+ ?3 e  ?6 M) _9 I4 N
setup-plot2
! D# Y6 i/ \- I8 i& H( d

( S% f0 ~. ~% E9 ksetup-plot3

' j. E( l$ v7 H) Mend
$ [8 ~! ~3 q8 P' ]( R- L2 ^; q2 g) o4 \# [( J1 H3 @( S
;;run time procedures( E. {1 e) R# D3 V
( J: r9 O$ w. f8 W, F6 `( ]1 l
to go0 ~& I( L! T9 P7 k% [  o
( a5 \0 Q  b9 \" p
ask turtles [do-business]

9 z& @  q% J" Z' N  c! dend- |1 w' B* Z1 D6 c7 L0 p1 o' `4 \

, p, V2 ?/ M; g" a6 r  A5 Y1 F$ xto do-business
5 h' m6 k/ O" x8 H
+ T; f( r8 J5 x9 a( V# l1 E

; _& T. F" j# T' y: Ort random 360
( b. v% W0 ^: t+ Y1 v0 d, _

  t3 j% u! J4 B: dfd 1
2 H/ J  [& }( L2 I( i! f8 g$ g

3 w! e% D2 U7 P+ l1 x) i! B# u' Bifelse(other turtles-here != nobody)[
5 v( g( u* `' g3 `
% D. Z; I5 N  `# i4 u  l6 R2 \' \/ V! ^/ {
set customer one-of other turtles-here

! D) o, _3 S) J
0 h( I$ Y* y& R- @7 b;; set [customer] of customer myself

9 L. ^5 t" Z0 c* c7 l
% l5 {1 n) Q+ O2 H/ |  kset [trade-record-one] of self item (([who] of customer) - 1)
# X/ k' c: n6 P[trade-record-all]of self  A3 K1 b9 V  Z
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
# ]+ u: \# E% D4 h- K2 t

  U/ J7 e- p' M/ Aset [trade-record-one] of customer item (([who] of self) - 1)
* @* r1 g- M7 k% H0 D% Y[trade-record-all]of customer
+ W! e6 R* M8 w* |

1 s5 I" c& X( Q: k0 w  iset [trade-record-one-len] of self length [trade-record-one] of self
& _+ D  v/ C% K2 h6 a
' T$ w* ?' z. u; d
set trade-record-current( list (timer) (random money-upper-limit))
9 z$ [: r  I" B: J
- |4 G& |# z& T4 j+ o: Z  m- P
ask self [do-trust]5 G8 _7 ~8 Y( {$ s" l
;;
先求ij的信任度$ e0 y$ F& ^) w" j$ V- P, r
, q. q, [  H; W% b
if ([trust-ok] of self), ]! m: y2 }$ `4 C
;;
根据ij的信任度来决定是否与j进行交易[  |! B- T/ B+ Y5 U0 {" e
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
9 u0 j" o( e% a2 l" o5 y" @6 g0 H0 ], E4 z3 }. I
[
, N( d' O# x6 O

* F, D1 A% o% I' L* X  p7 {+ udo-trade
* K: F8 e! ~2 t
) b# V  f1 l  B0 f! A
update-credibility-ijl

* \8 ~* K$ t. ?9 U* ?, c" o7 a8 c& T! d/ M" p" q% a; F
update-credibility-list
0 Y8 t+ Y) b8 A1 \4 M

0 C  [, m1 U# |) ?8 Q# B: {7 K) `/ u' F* N! |, K  z
update-global-reputation-list

" @1 G2 [2 v, S$ U0 e+ c) n9 k# e0 b/ u+ q" `
poll-class
) f( k$ U% L4 K9 j0 E& l

, v" ?* i' x3 j! v7 I0 ?; I3 Aget-color

) x: I$ {% u; \) w; r$ p' |8 j5 L/ \/ J
]]+ l- H- X8 V3 j$ F  V* x0 [

2 s/ A1 f3 j1 e+ S6 K9 |# B;;
如果所得的信任度满足条件,则进行交易
2 m# K- G7 _; f& A9 r8 w& W- q% p
) |- e3 t% M' F" p[
4 W3 v$ c( a$ z/ K8 A- I
/ i& G' u, p. u, D+ ^4 Y; k, x
rt random 360
8 ?4 s1 Q! o: t: s# O! V2 ^2 E, \1 S

, h7 Q6 {, A: afd 1
# V- O0 L8 M9 o, z+ v$ i

2 I! m* z, V- r9 Y]
( ]/ g5 [( q4 p1 ]* ?) u' z
/ _/ w1 J" a8 v1 y6 S% M, d' \
end

" f2 \+ ~7 p0 x, O7 I
7 [% Q, z: @& |2 H  w  yto do-trust $ Y# R9 {3 Z: L4 t+ {/ j, S" X, R! w4 A$ ]
set trust-ok False
0 y1 D# g( s3 v. ^, m: h7 H
) A% \& f  \- ^& }

8 B7 N( j/ ^# o- s% W( @* k+ ~( qlet max-trade-times 0
: ?( h: R; ~( _% D/ @foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]( [5 H7 N9 J9 k6 P9 N3 [! X# d
let max-trade-money 0
* b3 o; a8 h% T, }- nforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
. q# }! f8 U$ G1 olet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))8 C* X$ r3 ]( w8 Z2 `, w* P! s

: ]' o1 B( q. d

4 }7 x2 h! F3 e3 @! rget-global-proportion# j, E. E- ^3 _" L5 a" ]
let trust-value+ v, k0 y4 T) s/ G
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)

1 ^- s& Q! ^' @3 Nif(trust-value > trade-trust-value)* f; I5 A, `: Y/ [4 A2 a$ X
[set trust-ok true]
3 c# g( R; X5 L# K' i% Jend
6 V; M6 t  h, q2 m! T% B: H3 N
# S- @* v0 P7 {# E- ?- zto get-global-proportion
1 K0 i; I7 r' ~) a* a( |4 ?  qifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)2 o2 Q1 m2 b, s% F- h' e2 N
[set global-proportion 0]
4 |6 k' c  N8 d* g. Q2 V# p[let i 0
9 }  m, j4 @3 N$ n  Vlet sum-money 0
7 n& M" P5 A0 x; Y$ n2 }while[ i < people]  o, Q* F# ^  E" `0 J8 m
[
9 t* h6 [* H& W" ^: p6 fif( length (item i
, u$ o' x( q3 L! O" `[trade-record-all] of customer) > 3 )
% v7 a) K3 l# v
[
4 P; m0 m4 m1 oset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
: N1 ], @* b$ ~]
2 _( u; W' N7 q) [* e]
+ `  @( a/ k( m3 vlet j 0- ~$ t: G! R& R/ \1 s- a: |
let note 0
( m. V4 F6 e' [% ~/ ~; vwhile[ j < people]* w$ W; A* H) i( ]9 V# O
[
2 _! v& c. k6 Z& vif( length (item i
" M) k: M/ w& {- |[trade-record-all] of customer) > 3 )

2 s  d2 u/ C: ^[3 T  c3 w% Z- D" q
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)  g9 q1 \1 X0 z: Z2 E
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]' k" Q! c! E# w* r, o
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
) T& \' g3 e# M; B/ H5 N]
9 b7 v8 k1 N9 u% t]
. g0 T: d- N5 z2 W. yset global-proportion note4 d& x- {; e: ^! x$ @# c# ?7 g
]. C4 O; L6 e2 ~- p4 X, w- d, n
end
& w/ W1 C: i& n
1 c- t1 n9 L. X2 P7 ]$ B! S8 R: Eto do-trade
6 @; E& A5 Z. u' M$ M, [9 B;;
这个过程实际上是给双方作出评价的过程
7 d) w% i' q0 t! H! _set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
) e" g& R4 Z3 |set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价2 j/ }) T+ @. h4 v! K3 U
set trade-record-current lput(timer) trade-record-current: c: b$ V& |* W4 z0 {
;;
评价时间
2 Q/ w- _/ b  A! l3 aask myself [8 ^! G7 g6 U1 I4 p2 `  n( n( r+ U
update-local-reputation( p' n, {1 E8 O/ U
set trade-record-current lput([local-reputation] of myself) trade-record-current
3 c! h* f5 z' s" F. _. b0 M) p]
  K7 K, J) R2 e& Z" M9 N# Nset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself2 n. t  I$ K7 h4 c6 M+ n/ w
;;
将此次交易的记录加入到trade-record-one
$ T: x! P! k+ K8 `0 M. `set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
" V* p) ~) Q& g9 P: Xlet note (item 2 trade-record-current )
/ A- K* m4 T/ M0 Pset trade-record-current
% I( E& _! g0 W7 W. ^(replace-item 2 trade-record-current (item 3 trade-record-current))
  I8 C2 @( h7 u/ \) I5 J
set trade-record-current
3 G+ Z+ J  K. o! R! U: a1 `$ o(replace-item 3 trade-record-current note)
2 D8 N/ W9 G* s7 }  J, y
0 v- o" S5 _8 [/ z
3 }* V! y6 @* h
ask customer [- X# V7 G; P! G+ K) v' ^
update-local-reputation  z2 O; N/ }# y0 \" t
set trade-record-current) t9 f' W% N6 G
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
* A4 `) k- ~' y3 N
]
, _) a5 W0 M+ h5 Y/ Q7 ~# Q" }6 ]+ f2 S0 z# r/ e# h% S/ F  G, `
' A/ S  c% N5 M3 x) e
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
5 r, A5 z7 \! u& O  L
2 _( A+ l! _5 x0 k/ V+ J7 d+ z
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
- g, d# Q! e& B) k6 b; a$ ~- j;;
将此次交易的记录加入到customertrade-record-all
" v( o) G$ `2 pend
$ J6 m6 d: T7 t% f
; T: V) h  J2 [! i2 T4 t* L7 Jto update-local-reputation
6 |4 E1 k- f3 V5 r8 b4 T. bset [trade-record-one-len] of myself length [trade-record-one] of myself
4 a$ ]! Q8 N7 S% |4 ?9 m/ m$ D+ n  R4 c/ X  ^- {/ w6 S
7 i: k& D4 D. r+ D0 M' S; v, x" N& A2 L: S
;;if [trade-record-one-len] of myself > 3

3 F' m* k8 r5 W4 M% `update-neighbor-total
5 T! z" H8 C' _' l% N" M;;
更新邻居节点的数目,在此进行1 q  R0 `: d" X
let i 3
0 V7 Z# y) g# ?9 Glet sum-time 05 Q, V3 V$ y8 Q* Z
while[i < [trade-record-one-len] of myself]  J( X' u0 E, y, T  N& C
[+ m1 S3 j* v" \0 {1 U9 ~
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )# y* m) @/ }* l+ S9 Q& R: f
set i9 s" ^; v  k9 _2 F8 Q
( i + 1)
+ N" Y3 n' e( ]# j8 y4 T# I- x6 C: }  N
]6 }+ b; m$ e& K# C
let j 33 _$ G3 k. M# {( }3 v6 K
let sum-money 00 J6 E. |. F0 i- A2 z9 Q0 q
while[j < [trade-record-one-len] of myself]$ @. ?& j- X) o7 ^9 I
[+ T* `1 u6 x6 m. U; ?
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)! t! A2 l2 H! w  F
set j
/ w0 S6 g% _: m& c# ^9 z) A( j + 1)
1 ]9 i: N) X* N. v+ E9 c
]
; y4 r. N. o2 P' p1 H4 nlet k 3; ]4 R! s2 u! \/ {/ Z$ C- C- o
let power 0
* D$ ~1 o, u! X3 N8 W( Q5 F! jlet local 0
0 z$ Z5 ^! U5 {2 O' y; Hwhile [k <[trade-record-one-len] of myself]
! Y) `( `0 L$ d6 m+ [0 `! w5 o0 q[  J1 X' K* J% u: l; m) P% R4 k9 ?
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) 9 Q) W9 n# @5 \
set k (k + 1)9 j" p/ s: d0 C# {4 Y. X; V* s
]* r2 r, Y) w7 [: u9 E2 v( V
set [local-reputation] of myself (local)
- Z) Q/ X$ Y$ L. c3 a6 c+ Tend0 d5 A- X& e9 ]1 H0 X
9 l. y" I" i2 U$ j( \; S2 l
to update-neighbor-total
' K$ n& l4 u$ V5 X- {  `: e$ t+ g% X% O1 e3 ?4 T5 s% q2 p5 U9 H
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
+ Y8 x1 V: u5 @6 z% Y% R0 P# X- j, E

! q4 x7 x  R8 t, O! x! }% t7 N% ^. Xend  G& r3 E0 B: h
- d, p( @3 t% j/ [& w
to update-credibility-ijl % S1 T) P+ E( Y, b( F' w' h; m
8 j3 C2 y, }7 W% v* A+ y
;;
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。
% F) M7 y2 j6 \4 d2 llet l 0
2 j8 I# P' x5 ]while[ l < people ]
; z( F7 F& K6 M# M5 P;;
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8 `; J: N( i- c9 Z) U
[
5 ?& c( ^' {6 S. |) alet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
9 I" U! B" i& h# C, {6 nif (trade-record-one-j-l-len > 3)! X4 b. g& U0 w0 d' N0 C! \* W+ z+ Z; s
[let trade-record-one-j-l item l ([trade-record-all] of customer);;暂存那个评价质量正在被评价的turtle j的与ltrade-record-one( f, L2 G6 T; r3 k
let i 3
$ P5 i6 E7 D! _% `5 M0 H( l) Z( Wlet sum-time 0
' i+ n, e7 u0 a0 `) ]while[i < trade-record-one-len]! B0 u# J* ^# W, J
[
. O. i. w- S+ k, o+ lset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
) p5 ~, x( ?% R) C' Y* Wset i
. w4 o( i. I) X' K9 e* z( i + 1)

# `8 U6 e" p& y. ~! ^# o: ]]2 o  ]% h; `/ I1 s3 n
let credibility-i-j-l 03 f0 O' b/ _. e2 i7 l
;;i
评价(jjl的评价)
8 u0 u. J# C+ Nlet j 3
# l: k9 w7 A" r7 ?- J% Flet k 4
3 s' _1 P' z! W& Kwhile[j < trade-record-one-len]
) r) N( K! @8 B9 h) H& Q. ^[% C+ M8 b* `5 M& O1 _6 M
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
: ]7 f2 n* p, Z8 Y: D; @' Yset 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)" V9 d1 C2 E# f0 O2 e9 S: ?
set j! i" u6 H4 X8 V! K0 c9 v( q& H$ w# O
( j + 1)
$ w7 r5 U+ M0 p0 ]5 g6 T4 W) K
], P* I' Z$ x. q/ c
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 ))
  u0 i9 o( l2 ]; s2 q" H# z$ U
: s* P. c' }3 j/ r2 f- }

6 k: e% z% g8 R- o! Ulet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
5 J2 F+ t$ k8 v5 K;;
及时更新il的评价质量的评价
, X9 d  D6 |% Z& ?  P7 \set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]( o4 w2 @6 }( Y8 Y1 {
set l (l + 1)
# i3 Y" O- C8 h. {5 l' g# S]
5 _3 `6 }; `. {  y% F: pend
, k' _: p4 P$ h7 w! `* j. \6 g2 T, r$ m0 U( p; @3 V) ]. {
to update-credibility-list
9 r! {9 l0 `& O6 l& ^let i 0$ J" `; [: U$ {! T2 u
while[i < people]* @: J6 J+ |; O- O$ J4 G) z
[
3 U* c* E, o9 g0 g+ d7 ]let j 0
! [  D/ m. ~3 U& O9 E* Q5 tlet note 0
; ]) m  n. ^: A: D7 flet k 03 [. \. f+ F  D  H
;;
计作出过评价的邻居节点的数目. t: V. m0 }* l, q4 W& i; t$ j2 W, e$ C
while[j < people]
. |7 ~/ ^! Q) y9 J2 }8 s1 `+ D[6 ]% a2 |5 B0 S* C/ z
if (item j( [credibility] of turtle (i + 1)) != -1)5 \8 t1 U) v6 s( W5 |
;;
判断是否给本turtle的评价质量做出过评价的节点& i2 s2 K' I! X
[set note (note + item j ([credibility]of turtle (i + 1)))
1 k" R  i' S& U+ X! ]: f* W8 X3 J& _, t;;*(exp (-(people - 2)))/(people - 2))]

' i, X4 O. ~6 ~1 o3 p# f2 iset k (k + 1)% v% I2 P; u3 D% u5 |4 c$ S; S5 q/ B
]; n  M$ z3 w: w2 ?4 p6 \5 o5 {8 h
set j (j + 1)4 g. A, u  K1 T- G2 F! t+ W
]
* i; ~! i6 t1 o- s( n( bset note (note *(exp (- (1 / k)))/ k)
8 u/ s! T4 v5 W0 U- b8 `* \$ eset credibility-list (replace-item i credibility-list note). G& w9 W6 e: o/ u; B" S
set i (i + 1)3 {" `' Q  X# |; T% C
]% @5 a1 ?* Q% x
end0 q9 X" {7 G; S( d' o, I

( p+ H" l$ w$ Y6 K' M/ @$ fto update-global-reputation-list
; E, z; v! Z4 a- wlet j 0
' {2 y, }3 J) Uwhile[j < people]
. K. n: ?( ^  d4 ~% \' {[: E9 i# C; r1 C0 R. J
let new 0
- }. m" t5 S  m8 h! m;;
暂存新的一个全局声誉( H% H9 F* Z' D8 s9 f( P( q
let i 0
: o0 j4 {  U/ e# D1 tlet sum-money 0
2 }% k8 Z6 W1 _5 a- Llet credibility-money 0
" v, {/ h; D# H1 F4 ~while [i < people]' o/ |8 q) V- I% a
[
$ P- n3 R- \" W( v& x$ Sset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
' U6 b6 _: b) t8 `set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
- W: S2 N, o$ |set i (i + 1)5 p* D5 q" c+ e0 |1 `+ e4 i
]0 X% q. L( `0 Q8 z. B7 z- N
let k 0; E- q% S- ~/ Y' l1 x4 u$ M
let new1 01 T1 k/ H# N/ m9 `4 V  c. B* |
while [k < people]3 v) p7 X! M) f! }& n8 ~! X
[8 Y7 P- _* C" j$ Y
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 Z, @( j" g) W) x- C- R# k: Pset k (k + 1)1 a: _9 I+ c& C
]' O  ?- V" P2 y9 n$ C, |4 C
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) * v6 \4 p% h( F* j) Z9 C: a& ~$ U
set global-reputation-list (replace-item j global-reputation-list new)
$ o0 b+ ]* w9 ]; ?, _set j (j + 1)  h$ n1 X/ U$ y8 S+ E6 [- P
]& `$ ?) I6 D! B1 Y
end/ T) }9 l( q4 [9 {

% H. ^) |8 l4 a" }5 k6 t0 a9 j% A4 l5 s4 H( c3 T. q
/ N9 Q# k7 u& w' v; I
to get-color$ w, L2 `' f: F. o9 ]
6 {- ?* l6 ]5 a/ ~0 f' s4 u3 j
set color blue
) G! I1 {- S- J& f4 U4 s$ m
end
, T( x7 F" s+ Z, w4 W  X' ?$ ^6 A. e0 g: S2 }% K
to poll-class
6 X3 ?7 B' L8 k% O* Cend
6 N" Y) S- R' ?* m) w; |: M
: S" T- T$ U9 Z6 A9 c1 p3 L7 a& Zto setup-plot1
( A0 a# E) O, D
! o: ]6 N" n0 Y) j' o2 S- E6 O& fset-current-plot "Trends-of-Local-reputation"
+ J- V  o4 ?# e$ o% Q
) u; X! I' r% l7 {' i; i" H; U4 M7 @
set-plot-x-range 0 xmax

9 \, I/ `  `: A0 y6 w
- q( \3 l* g- V7 jset-plot-y-range 0.0 ymax

/ q# Z1 j2 E* \' i. M4 V6 Iend) F1 {' M" k. A* I% {% v

! {/ s# d- P" M& Hto setup-plot2* J/ U) \0 |) n. U4 u9 Q

: Z: E# ~4 f# Eset-current-plot "Trends-of-global-reputation"

6 b8 p: T% X+ e8 W5 I( ^! @, P6 v& x
set-plot-x-range 0 xmax
7 @; B+ C, y, ^& W& d; a6 e

0 ~, |/ E5 k6 g' F* d- iset-plot-y-range 0.0 ymax
8 B/ _, N. k8 j! M3 }
end
% h$ y4 s6 z/ B! m$ a: y" ~; w( K  y  g2 Y5 u4 P
to setup-plot3# R" J% Y7 j! y0 _6 z
4 Q) x) h' f; q& C/ V' |
set-current-plot "Trends-of-credibility"
8 N5 [5 q' }" a' t& r2 d
( g% W5 E8 ~7 r! a0 c/ a
set-plot-x-range 0 xmax
/ @0 d" |) c" P
# \, `% r3 u, x5 H- I+ v8 s7 `! w9 _
set-plot-y-range 0.0 ymax
: g' R) Y! t- y0 f
end' T/ V' `' ?/ ~2 J1 ?% J0 D& p. g& Q

- o( s$ h2 I2 L6 w# X* N$ m. B- @to do-plots* C) P4 A% X0 P9 E6 p# l6 T
set-current-plot "Trends-of-Local-reputation"3 G1 T7 C% {0 a) _1 A" v
set-current-plot-pen "Honest service"( J, q( a1 O+ ?) J, V  b4 h* T
end3 V4 T7 u. s8 E  l( w
) `8 ]8 K. y8 b% 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.! `. x/ x. o& Z; Q0 ?9 \3 X. d
, ]/ C* d3 ~4 |$ ~
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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