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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:
# B  M* v4 [- l& g% Gto do-business
/ K' M3 C+ Q3 @6 D rt random 360' v/ T; @' `* E9 [0 ?5 X
fd 1
3 {2 D& Q! l2 n4 S  n" R0 Z ifelse(other turtles-here != nobody)[
) T) {2 t/ c5 Y- w: E8 M, X   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.
. ^# F( u; `9 w; m9 Q0 B' n   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    0 Q+ c0 e6 Q+ S& W( o; O) L0 X, K
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
/ [1 m5 ]% M! E: H   set [trade-record-one-len] of self length [trade-record-one] of self
4 ]+ w+ Y* q3 Z   set trade-record-current( list (timer) (random money-upper-limit))- h! y9 I* m! N6 B' E/ M, v

& g; p5 g7 `( ~3 f6 d: T) W6 q( y2 ~问题的提示如下:
' s' ?7 c( _9 E; e3 |- M
# A% j0 l3 Y! o: I; Merror while turtle 50 running OF in procedure DO-BUSINESS
# d* h' s2 }5 ?" k  called by procedure GO' A1 g  ?9 P' x  e9 j1 c
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
( s/ I4 y, s4 X7 U- ?! {- h
(halted running of go)/ h9 ]7 L7 G" C( B, {9 @
! J' R, M! g  ]3 P, [
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~~
! ]4 W" a# g: D) {5 M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
; B9 v3 |! R8 t& T7 s6 |% vglobals[# w, W* K, d: }7 k1 @! ~
xmax
3 Q0 u/ n- h. gymax2 o$ Q8 ]4 W1 |5 L5 X5 L
global-reputation-list& o& Z8 B1 U7 ^  \3 G

$ u, m, D5 _3 G0 B;;
每一个turtle的全局声誉都存在此LIST% h1 E* v: r  o& l2 h+ b/ n
credibility-list+ d8 |9 b2 g% ?3 {3 n+ o
;;
每一个turtle的评价可信度6 T  S+ B4 f$ b% ~4 R
honest-service3 D0 v/ P: @9 Q
unhonest-service
: G5 Y, |! Y5 u, g3 h7 U" x; D9 l6 Hoscillation
, W6 k) i/ p: y! erand-dynamic
& o$ ^. G2 Y" r]% _1 ]0 h" a* k
! s$ t- x0 P  e/ c( l+ n
turtles-own[1 N! `7 J, n* I/ Y
trade-record-all
8 U% T8 `  J) k/ j2 R;;a list of lists,
trade-record-one组成' K1 \+ N7 x8 i2 P, v+ Y
trade-record-one  Z! W! X- {8 h& `! d$ O
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录; P3 O" d9 z1 z
  K& w- r( A1 C% r: 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]]3 p- q" J* P( B
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]
- k! V5 V) ]0 A% L5 E! |7 Xcredibility-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
; d4 y) C- n: ^5 Bneighbor-total! M% c3 a9 p5 [8 M# ^- ~+ r: t: @
;;
记录该turtle的邻居节点的数目
9 C$ a: m/ S% t$ H/ Utrade-time
0 u9 [, V! S$ @2 c;;
当前发生交易的turtle的交易时间
; J( L: \% ?3 O# y+ u; O0 rappraise-give. F& G/ l  a/ R
;;
当前发生交易时给出的评价9 y: ?( a( ?. q# ~0 M; U4 q
appraise-receive: f1 j+ ^" N: q$ X
;;
当前发生交易时收到的评价8 d3 h: D9 N4 N) I' ], \$ [
appraise-time
4 `% k  `: S8 c;;
当前发生交易时的评价时间( X* V8 Z3 c; e
local-reputation-now;;此次交易后相对于对方turtle的局部声誉" ^0 J: m3 _3 j; a' q+ P
trade-times-total
, T! }/ V1 M) Y9 M;;
与当前turtle的交易总次数
. ?' J6 A# e* _9 Ztrade-money-total
$ p2 Y8 B  D" d; d5 |8 d" R;;
与当前turtle的交易总金额: N/ `7 s- b: `  p
local-reputation2 o( q  a# u, L9 B5 X
global-reputation2 I4 `) Q/ s# x8 ]1 V3 n! M
credibility3 x$ }) T% H2 C( f# ?$ [# C& M
;;
评价可信度,每次交易后都需要更新; g9 C8 v2 q) c* [# T7 R& R2 X
credibility-all: i- t. n  g' u5 k% V, `$ P0 R" J
;;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7 ^; ?; |: M' z9 h; P

/ f& Y" C, h3 L# S;;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
- B+ j1 f! _2 y6 N+ p; q4 [, B; Pcredibility-one
+ F- K) M+ V9 ~' k" ^;;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
% f$ f; n' ^& H2 Y  ~global-proportion
) q( Z: T  r! P4 S2 ycustomer$ l2 E# ^. \/ ~) C' O
customer-no' c9 t/ F4 X3 y
trust-ok" I/ H5 f2 Q+ M$ h3 |
trade-record-one-len;;trade-record-one的长度0 u9 v* ]1 n; t, Y5 X' g8 r9 {' A
]
  @  f1 f6 J; b! W2 n& E, ^
0 ^' C( f2 U& [7 G8 f;;setup procedure( o: {6 i( J9 G2 ^6 Y7 P

0 y8 Q2 D; X7 Z3 T1 E" H" g. jto setup) a7 [. g$ u4 a0 f, v; v7 p

0 c9 L; I) D' {: Z# ?7 z5 D; Vca
5 y8 F2 C- h, C% e

$ W. }9 v5 V' Y+ ainitialize-settings
& n+ g* C0 C/ r* r- f2 G$ t

0 k, E& O" V* p  D9 P' Mcrt people [setup-turtles]
9 L) Y# R$ t. e9 ]; `
2 n7 d) h  r" I7 G8 m# R
reset-timer
& c& {( l6 H5 H
8 f6 V0 u& z" Z. t% B, @$ t
poll-class

1 t5 {6 m2 Y3 D* W2 h( j2 U8 {( V, h1 ?# h; U- r
setup-plots
  V, f+ {/ o) ]& N4 C
. ]0 s2 f9 t/ ~( R' P: W
do-plots

, U0 [/ s- Y; Y1 y/ h( ^8 \$ rend7 k3 F6 }/ S+ r# {+ F, y
7 \  D  M& d- V% `7 ~
to initialize-settings3 t+ A; m7 i6 P" h

% z/ A. X! R; \; m% Bset global-reputation-list []
% \1 D# F1 H( j& d- b+ G! _& R# F
' R7 h# K# x9 `$ e4 L! X5 P
set credibility-list n-values people [0.5]
: O) p) U% X; P; d, N
$ B- u/ J( x) T2 g$ l  {
set honest-service 0
! N* Z" L0 f: x/ F; t) M/ A% ^
6 W0 q* T6 Y0 r0 k  `, T
set unhonest-service 0
/ t$ y5 N% I% o  I7 V2 B7 p9 {
0 k0 h* o7 e+ L" A! K9 ?; M7 n
set oscillation 0
2 A' a' u$ \* X* X" r7 `8 ^$ e
$ g& |7 G0 l* |" l) O  D! R& P
set rand-dynamic 0
/ t: K% ^. P8 \" [6 e& d5 I3 |
end, U2 L% b  T  x6 M5 H  m( v$ A3 y
; J2 x: G" v5 X; w( `
to setup-turtles
2 n0 a. `9 F; `7 N8 g6 nset shape "person"
" ]! w& r( z5 S) e8 _4 isetxy random-xcor random-ycor8 W) [5 c- D( H- w; y3 G" r
set trade-record-one []
. i- p% W8 L* t% Q* ~

: r5 w) X+ {" ]& G2 l. b% D# cset trade-record-all n-values people [(list (? + 1) 0 0)] & u/ E0 }" E8 n( x  f1 C) S% ?; N/ h

" I6 w3 `; n# N. Eset trade-record-current []5 L/ m. B3 j) V) W7 a( g
set credibility-receive []0 W' }8 y' L& ?9 ^9 P
set local-reputation 0.5
4 W5 ]. Z/ G4 V6 ?) c4 o, e6 M$ Jset neighbor-total 0* s7 ?- C# w7 e
set trade-times-total 03 ]2 E) z- V( F0 q1 e
set trade-money-total 0) j  P7 T* I9 |) H0 _& }" J
set customer nobody3 G+ \# i9 {, {1 Q. F) W& x3 W
set credibility-all n-values people [creat-credibility]
' x+ T* E  T, [set credibility n-values people [-1]
9 S# e0 W2 i0 u" g" N+ R) i* hget-color
; K8 }0 @0 `$ h. ?

# q. m& d% A2 Z8 i; Iend( U% U4 ?: n1 s' h3 p

2 u, i2 ^8 Z5 }# s* j4 Qto-report creat-credibility  g* n# y+ G: f0 T) }  E( r
report n-values people [0.5]2 [: d, e8 P5 p! J. c6 `
end
6 ]* W5 |+ V5 {' P* n: B' b$ ]& w6 }7 t( y
to setup-plots1 {" d; C6 h7 E( F' Q8 Q

& x: r1 B( v8 C* i2 eset xmax 30

( ?$ A) C7 F) H" |+ c5 u1 b$ W/ u9 y% }7 i# R
set ymax 1.0
6 H# k5 z. }# a1 t) U0 U

6 L  T; K3 y+ B0 J' zclear-all-plots
1 C- K2 s/ T1 a* v! Q

5 R- x; J7 R; p! p0 `setup-plot1

# q& `, V& C6 j' H0 M$ h' d
7 y2 T, K4 J: ~: Nsetup-plot2
4 N  u8 q: S$ v5 {
, f# b" k3 E4 E5 D8 P+ P' E
setup-plot3
# T* i9 f5 O6 ^/ S  O: P+ X
end7 ^( Q+ Z3 X6 W
  }5 P( P! v5 u  {4 e) _
;;run time procedures
2 w9 R+ l7 w2 G- C
4 C4 V* ~' u/ ~. @to go
# `* {1 I6 i) }, e9 ?8 Y
# C" m4 g: t1 J/ u7 K# Aask turtles [do-business]
% b( @; @* K% V: N
end! _* R* V6 z; u( d9 }4 E

# s- v0 }, l- mto do-business
. y8 F. u  j: r( g
* w8 b, d' f9 T! L$ d$ Z
2 B7 d& c  p# E5 Y" e0 W' c
rt random 360

$ G* P  ^0 M6 B# _: W% E/ x8 r' v$ W" U
fd 1

5 Y  V1 D5 V% w; M2 W
) W. V# A' `" u9 f6 m2 Y1 ?. Vifelse(other turtles-here != nobody)[
- }+ h4 W- _" e0 u( L9 I7 D1 @
8 F# e: T$ t$ `) B% A2 i
set customer one-of other turtles-here
8 n+ O9 }9 ~- _8 G4 M& m

% }# ]: W+ R  o1 n2 K;; set [customer] of customer myself

) ?/ X* Q0 k& Q  O3 V  s4 ]6 Y1 Q, m6 R) P2 [- P
set [trade-record-one] of self item (([who] of customer) - 1)
7 I9 Y7 \9 d: I6 C. f, ^8 p[trade-record-all]of self
5 l" o2 B, A2 s7 w! W0 K" T;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

" j2 H2 v, ~* M! y1 X+ k. i3 l* ?. b, A
set [trade-record-one] of customer item (([who] of self) - 1)
6 g. V& e2 K) H, |4 B) G[trade-record-all]of customer
# }+ k8 j% a7 w9 P8 R2 V

, t, Z/ I4 r$ Z) dset [trade-record-one-len] of self length [trade-record-one] of self

: r' ]5 a, @; K1 k" c) w8 L$ g- s" O* B+ m; K) z. X
set trade-record-current( list (timer) (random money-upper-limit))

/ }; Y+ ]# d2 K3 \+ A
; U( @! N* H* t- S# lask self [do-trust]
/ x9 N+ e. v9 M# B! Y% X  e" y;;
先求ij的信任度
2 O( \% h; L6 m2 V# a! c9 U) [* ]  s9 N8 E
if ([trust-ok] of self)0 c9 U, S  ?1 y9 {2 J/ t
;;
根据ij的信任度来决定是否与j进行交易[; Q  @9 r0 Y! X
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself1 K+ u9 b) m3 J' ^) A% \
3 q' e/ `5 m4 }  `/ ]& V% Q
[

7 F4 a' o2 I  E- M( u$ T$ r; _% p: r+ p3 W0 [, K/ e
do-trade
; |* V/ c# i- ?  W) o; u& l

' l7 @4 v6 E) ]) @$ ~6 Oupdate-credibility-ijl
( f1 |9 O6 k+ t7 `% P' e  N
7 [$ d/ e) H% {
update-credibility-list* c' g# G- y& H9 z) w2 H
1 b4 E, i1 [' I
3 w. h9 J2 `; G8 h7 B2 b" c: D& q
update-global-reputation-list
. T* ~0 L2 N. F9 O' m- Y7 ?8 h  r

3 e( j$ M5 Y, A3 p; P; l- gpoll-class
  E% H3 b2 r& q0 J4 U% M
0 k0 H& x2 C) ~) a7 O
get-color

$ g3 b: r8 \. S7 z' H% I5 X* ]9 K5 X
]]8 \% x9 \; N! M- D9 D: q  |/ E
; ^* Q# G! w: Y* u! M! h
;;
如果所得的信任度满足条件,则进行交易( U8 i  T1 Z0 a& V. \

3 _+ `' }! @" C! W. P[
+ A9 [* O0 T( u! F" f2 x) c& F
: B) V4 q8 C' E4 [
rt random 360
. m0 K' _* {( b
% c4 d( h2 r3 W
fd 1
* _% y2 q. B* m0 ?3 _+ ~) |
. V+ l6 i0 s( ?5 i
]

% Q) V$ C' [/ V& Y( X
7 ]) V- O( v3 w- cend

2 d0 P4 Y" g  u" Y
9 V' q0 }4 K9 N# o* [% r9 Yto do-trust ( ]" z: ]0 n5 m6 {& T$ {; O8 B
set trust-ok False* a2 ]* `  z( O* H+ r
/ S& s; F/ l: @& {/ m4 `9 q- ~
; u) o: X9 d) A1 v2 B
let max-trade-times 0
' f1 d% d) d) U$ Sforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
" E0 y/ d# }  b8 l0 X! x7 m/ Clet max-trade-money 0
: W. t. A" m: F1 }1 S! Zforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
# n- ^, k3 @9 W8 b3 a" O. klet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))) k5 l6 S, h( L, @  {
% B( b6 i3 J) I- d0 p5 X$ P5 g# m* }

9 \, A4 N) U( N" v. }' O" Pget-global-proportion8 k, U2 I- U3 j0 Y# G
let trust-value
: S' D: A! q! w. Z! j: _! _! Flocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
$ `( d: |, O: n6 N) D% L
if(trust-value > trade-trust-value)
6 L/ V) O0 P: P7 N* v- m[set trust-ok true]
# ~1 y9 q% G/ Q5 I/ ?: Z2 Uend7 ]. }4 I% |8 y  u% H. n

  `+ L; k; ~  h/ bto get-global-proportion
- a1 Q7 J7 B/ e( v8 \) lifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)) G4 E0 h* k1 ?9 \& I: F1 D( z  `
[set global-proportion 0]
, q& K3 \0 r$ L/ R[let i 0+ f; {" l9 v/ r( v1 T" G8 |
let sum-money 0/ v1 ?+ U5 d/ h5 z0 z. `0 C; i
while[ i < people]
' W8 Q4 @" k. c* u" l: E6 U  ^* b& p[
" x+ {  j2 X  oif( length (item i
/ P! @- A* f7 D8 f# I' v[trade-record-all] of customer) > 3 )

; `7 {3 p0 C9 _" C[
% H# \% Y5 W& M! e$ C; r/ yset sum-money (sum-money + item 2(item i [trade-record-all] of myself))  n. X' G; f0 [; d7 ]
]
4 m& T  k6 K& l, Z+ A]2 D6 a' Y0 c3 D/ |7 l4 h1 i# r6 V
let j 0
  b  S( r1 B, N) i) qlet note 0
7 E5 }1 k* l& \  Bwhile[ j < people], ~# T  X) O. T
[' i# x8 y. E- s. R8 r
if( length (item i
  S& E6 u! I3 h) B5 N, b; _[trade-record-all] of customer) > 3 )
( i7 A/ m" X6 j8 E3 A
[
: [! s1 L7 H& S! R7 yifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)% U/ r) z3 B6 a
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
' Q5 ~8 l9 z) i; a7 a[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]- x: t! @, Y) @- \% |
]7 m7 s% o0 j. T+ T1 V+ v, e: f4 g
]
* ^( r. F: u9 N+ Qset global-proportion note
7 Z. {- {' H9 u4 q]' K: ^4 n- A+ ?, L9 P
end
0 [$ j$ @" ?( t  S. `
3 c& Q* \8 o: T7 ]to do-trade
* V! Z/ D& a4 R) [0 c* F1 X;;
这个过程实际上是给双方作出评价的过程3 k. s7 ^$ m3 ~  E) @- @
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价; m4 c+ Q. T$ x( O" G& l
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
. b6 h: ^0 ?$ A2 e0 P6 p# j& \set trade-record-current lput(timer) trade-record-current0 h( K: [- j3 m  q* z+ N" F) ]  v
;;
评价时间9 U4 Y- c  {- V) ?' g$ S: o0 i3 h
ask myself [& i  a5 d4 b2 R! z7 t/ S/ y7 r
update-local-reputation( z$ W; F8 S' U6 }
set trade-record-current lput([local-reputation] of myself) trade-record-current1 M" N5 N/ Y) F& a; o/ V2 U
]! `+ `) q2 P5 Z0 D) {2 p9 {- ~
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
5 o6 x/ B1 e# C; b;;
将此次交易的记录加入到trade-record-one' K& {1 T/ @5 W4 x- a6 C/ O( Z& q
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)+ q1 M/ ?( e! h4 a
let note (item 2 trade-record-current )& @* f4 a9 d' s2 ~
set trade-record-current0 P3 {7 Y5 L( Q; ^8 G7 @4 D4 v2 {
(replace-item 2 trade-record-current (item 3 trade-record-current))

2 o( w  h" H4 D  F6 C* W  z( xset trade-record-current* u& r& u1 Z% {9 J
(replace-item 3 trade-record-current note)4 w) Z+ s1 l; \7 m
" |; k5 I, n/ Z) @# C8 r8 B, q

: \8 n, i% X" b: @+ Sask customer [
9 E: n  u& p  k; S/ r  pupdate-local-reputation
0 @& S5 e$ w9 H+ Xset trade-record-current% y% j& z/ C$ s% D
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

" j& X% h) x4 D* I]" B1 |' V: p& g

+ ~0 v7 c: w. V2 D+ T

* c; X, Y, T8 Z. kset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer+ T! t( }# V: x& x0 Q) O
4 P9 X: k9 \5 I, d
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))% x9 {& w, u8 P/ S: ]
;;
将此次交易的记录加入到customertrade-record-all
7 c3 Q4 A3 I( U( D1 Wend
: b) Y& U& `9 q$ r! [8 h* p' `4 y& x) y  }
to update-local-reputation1 X5 M3 h0 [, f
set [trade-record-one-len] of myself length [trade-record-one] of myself/ D; K2 B7 q4 W2 t5 }

) Q0 d; I# A; p5 Z7 R4 z7 O  ~; a8 n, |3 _
;;if [trade-record-one-len] of myself > 3

: M8 |. Q! ]- J" k) K) p6 e% G$ Uupdate-neighbor-total
1 E3 h0 E8 u5 V) }" E6 b9 y;;
更新邻居节点的数目,在此进行
$ C2 |9 E5 ~. _( e5 Zlet i 3
- R( n# c0 w% u2 G6 t' jlet sum-time 0
0 H1 L, X6 `$ p3 O% iwhile[i < [trade-record-one-len] of myself]
4 L0 `3 l; C4 u+ R& J[# w+ x. {/ t% m) V" ~
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
8 g3 r  ^3 A  Yset i
6 z9 y- @# m2 e+ y( i + 1)
; _3 T8 p& [7 z, B
]
# [% r( I- U- A! Z, Z& G$ E4 wlet j 3- R, \' z) a, O( P9 x* ^) m
let sum-money 0& ~& p; p, X8 H
while[j < [trade-record-one-len] of myself]1 Q' i. m/ q% `% q
[
7 ]7 {: `. ~4 N( a, q5 jset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
+ ^% d; W' [8 F2 H: s  M" vset j
8 {# N$ Y+ F/ X- B( Y0 K( j + 1)
: F  o2 x5 \+ z! \( @. G7 F" o) U
]+ t: [) G5 W8 }9 a6 b, B
let k 35 F- r. [9 ^+ N* Z: e8 y* u
let power 0
7 g4 w8 l  T; B8 Wlet local 0
/ J/ q& @0 Z6 b: `. l7 Awhile [k <[trade-record-one-len] of myself]
9 E: I# T. W1 L[& H( }4 J0 Z9 K' j/ M
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) # |6 w7 a! ~  ]; r+ x
set k (k + 1)
) a! V5 q/ k+ h* T$ ?/ ]]
# e! ?, {# Q( G# F& e$ rset [local-reputation] of myself (local)
+ X; W7 ]& d. i+ M! h- Rend
( ~1 C6 T) X0 n" [; b; U( C( d) B0 b9 ~/ N8 d5 l' d
to update-neighbor-total( l& Y3 ?0 M" q5 x5 ]# y; x
& `& N# h- H! I
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
4 c' |- j6 C0 n% X; n' N1 m5 T  U) @% S3 ^4 r* H

' a6 ^" E5 |' p/ C; a2 ]& Mend
4 e6 D9 W) W1 a, a" R! u& g9 x7 k
to update-credibility-ijl
: \) k9 V( Y; ]; k( }; ?: Y1 x! e4 m* F& f
;;
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。
% m% W; K! E' [! m% Nlet l 0" q; t( [5 A6 U5 g
while[ l < people ]
$ V7 M5 s: c6 N! I! Z3 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9 r- v) h0 z7 G$ c2 e9 }. _
[
8 Z( S8 o, x; R6 g6 k3 R  glet trade-record-one-j-l-len length item l ([trade-record-all] of customer)9 t* e, Q' |, h1 h
if (trade-record-one-j-l-len > 3)" c: E: U* ?$ s+ T% ?+ j
[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; H7 z* o/ C, A7 }- }) ^* O' b
let i 3
2 z9 y  \( M, k# X) k+ u0 Ilet sum-time 0* T( n8 f5 G% _4 r% t
while[i < trade-record-one-len]
* [6 L1 K% S% V2 y' L1 ^5 J5 v[  \. G+ Q- R: x9 K7 p
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )# K2 A& F7 Q0 h* [  ^
set i2 ]7 C+ [, v: \* K* C% C5 f, z5 ^: g
( i + 1)

. [- v. {6 v, z2 E8 C) J! J/ n]
# ]( _7 O  E6 q" q1 h( E  d# k& Qlet credibility-i-j-l 0. y6 ]& B3 l5 `* k- \1 m
;;i
评价(jjl的评价)
1 g, F2 M) h8 y# k, Q# v, _, klet j 3
" y0 m. }" S$ |% Alet k 4' b$ U7 ]& g1 F4 e  e0 m
while[j < trade-record-one-len]: P: R) N: s: _; ~8 T
[( k! U1 p* m2 \6 m  H* Y) K
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
- @1 r% z# ~7 Q- @* 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)5 I8 ~3 Z6 f2 F' `
set j
( F3 E/ ^: C$ |% \$ r( j + 1)
% p, u1 W% R/ m9 Q
]
5 E, e6 \  o, V- I# F2 B5 vset [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 C, v8 a) B; R
' Q/ c6 B3 N# C9 Q
/ r. h0 h5 A, }' \8 F& |1 ^
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
% s/ g5 m6 N4 j  L/ U3 O$ r;;
及时更新il的评价质量的评价
& p3 d1 p/ [9 L. R+ Z+ tset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]" C) a6 o) [; }' l/ v' D
set l (l + 1)3 x, u' O0 V! r5 ]
]
* |0 i4 I  V2 i* X; @4 z6 W, e& [end
! _2 E$ T4 u" C  @! _- R
7 N$ X% ]9 f5 T2 {to update-credibility-list
" q1 i5 t" \; l+ \let i 0
* P  m9 u; ?/ s7 k7 nwhile[i < people]) K" Q) V- ?4 j
[; b+ |$ J7 S+ N9 q+ |: o5 m8 e- m
let j 0& z6 y7 ?9 S& m; Y' g* I
let note 00 K( |$ D# q4 a& C9 u  [% n: U7 e
let k 0
) v, T% \. @$ f" O;;
计作出过评价的邻居节点的数目
3 F' L0 o' a# B/ e1 E% L9 c1 bwhile[j < people]4 T* C! x3 h* S& v# a! J1 e
[
- O& s( D# E/ m9 _! h4 g) }. J  iif (item j( [credibility] of turtle (i + 1)) != -1)
6 U) B% U5 U; Z;;
判断是否给本turtle的评价质量做出过评价的节点% l1 r! Y7 }* L* T
[set note (note + item j ([credibility]of turtle (i + 1)))
, s6 P/ v- N+ X+ |* W;;*(exp (-(people - 2)))/(people - 2))]

) `( L9 ^& |# Q. V1 I; o8 Q6 B* Dset k (k + 1)
. Q- x' h! A- E2 F  K]" P8 L) ]" p+ Y- ^0 S6 M
set j (j + 1)4 B5 p! F0 M) H% r$ Q; A
]
; }3 d# e; @+ G' Rset note (note *(exp (- (1 / k)))/ k)  ?: d2 x! M; g3 @5 F8 T! q
set credibility-list (replace-item i credibility-list note)
- [/ i4 Q& P3 J! _5 u, B1 I6 T' ~set i (i + 1); u2 x+ \; f: u+ z5 g9 b+ [1 n/ Y( H
]
5 `; E! V5 I# C5 m" ?" aend
) K) `. R) [2 y
+ l& d* }/ w" P) O. W0 cto update-global-reputation-list
" ]: ^7 `5 ^* nlet j 0
" b5 @) L1 m( d/ U1 kwhile[j < people]$ o- |  p% Q/ P$ o4 X
[: h1 x5 v6 h% q6 S* J: b
let new 0
, |; @' n$ \+ {; f! T2 c;;
暂存新的一个全局声誉8 k3 h, E8 r6 S9 P8 I. S! M
let i 0
$ F! k& U" E  x" k  ^let sum-money 06 _8 U  N3 R" B* {
let credibility-money 0; x9 T) Q1 g/ [9 z! G
while [i < people]
% P6 d' W; H7 c[
% [8 A6 R" u- k7 H* O( [set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
: u; _7 T. u. f- |set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))/ k- S" ~! d( i" v6 ^
set i (i + 1)
& j3 h3 R, S- z3 t" v]
4 x8 E% }$ n% L' S; llet k 06 e" Z3 n9 U& I
let new1 0
% V6 g% B- z# s. C& ^4 Lwhile [k < people]
% S; M" Q0 R& @+ Z# r[3 _  o, I! R3 x% z  g' |( T! b
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)
$ \* H$ e! C# I3 z) aset k (k + 1)6 u. J+ H9 G5 B: ~5 v. {
]
* {* c, E' h* Z0 t  Tset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
# E" v2 Q& L2 W- Nset global-reputation-list (replace-item j global-reputation-list new)' x5 L8 z+ ]/ \! C( W) i
set j (j + 1)
$ K: Z' K# ~7 w: q% L0 F]
$ b0 n/ d- H) b* z8 p3 y  H5 Iend1 x( ?$ @- `* |( ?' t

2 s7 s/ o- t6 A5 B6 ~; `/ _) j" ~% v" ^2 @2 i; {9 B' A- U
, s" p5 I# [8 d5 ]$ M! d6 w: b
to get-color, z' q8 A  r& Y9 G/ i
8 H7 q: G) m' u
set color blue

! y  Q5 v9 B$ U( V. s) I+ N, T. |end
( {6 s% p2 h  H# U2 Y/ s2 b6 M9 m3 J" n  R$ F0 E& e1 i  f
to poll-class
+ a& }; t8 A* f# B! x0 L: s$ I4 _. Jend& h( Y# A9 G! Y) _3 L
8 t5 e9 L  |! G8 h% K
to setup-plot1
4 G! }* m- T3 I" C5 e5 T7 v6 }0 u0 ~+ z. I! H# v
set-current-plot "Trends-of-Local-reputation"
4 Q7 O4 G4 U( b0 p! [' s
1 u; K. \# q' a, T. n) r
set-plot-x-range 0 xmax
4 j- c; f* m* B& u  b: r9 H7 F

& q# R( V3 @, `$ O- S! Fset-plot-y-range 0.0 ymax

4 k0 C2 d5 ~" T& O2 Mend
' Q) q; r2 e- k' h7 p: Y! n# y) |' k4 p
to setup-plot2, H; w1 |+ h- E
: I% \" |. r6 @3 ^5 S
set-current-plot "Trends-of-global-reputation"
" o( g+ ^# c* S  e

0 @2 C9 R) S* k+ t# v: uset-plot-x-range 0 xmax
, L. _+ \1 T! H; l9 T

( H1 @) G3 {" B7 |* Q1 kset-plot-y-range 0.0 ymax
* i0 s  e2 I% z- J6 x9 i2 @
end8 n4 g, E& K6 v2 N% f" ?" @0 w& h# ~- X1 `
/ z& u( g& x, @4 a  @
to setup-plot3
- n- R# p$ z, G
9 g; S3 j* I) {% G& d0 ~* Rset-current-plot "Trends-of-credibility"
0 V, M( f* {8 H0 @- N
  F+ k' ?/ t; i1 a* x* e/ m
set-plot-x-range 0 xmax
2 v4 P+ o. R* j* Z: F; u/ b
, j5 k! N9 v6 b  V* q6 o/ K
set-plot-y-range 0.0 ymax

- ~5 t9 L) b1 c' j% _  pend" Q; j/ L0 p1 C  d1 Z
7 t* w2 N) ]& a. N( ?& D' H
to do-plots
3 }2 G' W- Z0 q3 R& hset-current-plot "Trends-of-Local-reputation"+ P* `  m) D' V- c
set-current-plot-pen "Honest service"
$ [8 O9 j  H4 c8 ~2 V$ Dend2 Q" n; S* p( {
/ u1 g" R" Y& i! q0 ]
[ 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.6 E1 Z* }+ K4 W' q+ W3 j1 }
6 N" g" D0 T% p! L, f8 y
这是我自己编的,估计有不少错误,对netlogo了解不是很深,请多指教,谢谢!
发表于 2008-3-22 16:55:16 | 显示全部楼层

程序公式

我问了一下,只是从程序角度来分析,是跑不起来的。如果参照你建的模型(公式),可能会有帮助,我的邮箱是wjcpcahu@126.com.方便的话,看看能不能进一步探讨。
发表于 2008-5-19 18:02:44 | 显示全部楼层

运行不了

提示custom无值,这是怎么回事?
发表于 2011-4-10 14:42:01 | 显示全部楼层
好高深
发表于 2011-11-7 11:36:13 | 显示全部楼层
为什么大部分的帖子的交流都止步于2008年,从08年到现在好像已经很长时间没有更新过了啊,为什么呢?
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