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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:
. m# U* B" w7 c' H- ?8 Ato do-business
; F1 N7 U3 P! h, K9 R0 J rt random 360& U5 ^' t7 j: X) q/ p: g& C
fd 1, ~" C, ^3 k. |, X+ D+ q! X' B
ifelse(other turtles-here != nobody)[
( t8 X3 `! m5 R+ j( Z   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.
# x6 [' G& a3 x# w- x! t' V  z   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
) ?1 E, u$ c7 D* C+ ]2 ^6 i6 M# M   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer) a# S* h' r* {+ q
   set [trade-record-one-len] of self length [trade-record-one] of self) R6 A% E! n! X0 W1 R5 H
   set trade-record-current( list (timer) (random money-upper-limit))
' K  S* c8 S+ `9 [# M; P
9 m% z7 ]% Z* n$ A2 @3 u& [1 l6 f8 n问题的提示如下:
& V0 V  X* w2 [  T, y5 O% p0 h9 Z) g4 Y- O
error while turtle 50 running OF in procedure DO-BUSINESS2 x/ y: i* A* P7 s& G
  called by procedure GO
! ?, ~3 p) N. u9 T5 n: LOF expected input to be a turtle agentset or turtle but got NOBODY instead.( s$ n* b7 V' g8 Q* K
(halted running of go)
: S5 N. U- g; A8 d
' l. {6 A* w. k7 r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~~- e7 ]: d* ~4 t' V2 Y. z) n
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7 g- G9 n. Q! I; V$ {# W
globals[2 F: ]  ]( n+ [# ]; m
xmax$ Q- m, d( }, k7 y
ymax
" O# n( K' z# K% n% @global-reputation-list
1 O  |5 D# r+ ]7 P8 y6 B6 S* i* _7 p* ]+ k1 a) S) W  x0 X
;;
每一个turtle的全局声誉都存在此LIST- o9 I: D& X; K) V1 q1 z
credibility-list+ \- d& |' w" d
;;
每一个turtle的评价可信度
3 B4 {& ~% m/ R- Ghonest-service
+ |& E* u  A9 p2 }unhonest-service. y( S6 R! Y# H" z! C
oscillation4 Y- h% @: i9 Z3 w( V! ^) w
rand-dynamic4 j/ t6 }, K6 B$ S% Z) \
]! D9 a5 B' c' _6 T( h! s. F

+ @" u5 W- v- fturtles-own[3 U6 \0 n0 u  B- }6 T+ ?
trade-record-all" E# e: b' ~& k0 q" u2 i
;;a list of lists,
trade-record-one组成
( U8 h% G8 X/ R+ t$ ]trade-record-one
% J- ]; f0 Y5 x6 S& m;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录' b' C* Y  g6 _, x; X$ y5 a5 o& c0 d
) I  z! N+ Y! @) P( V
;;[
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]]
- R- N3 K  O; Ntrade-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]
. S" m: L  i# @/ ^1 Pcredibility-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% i) D9 }, k. M1 n2 I
neighbor-total: F# w* o7 G# d. `
;;
记录该turtle的邻居节点的数目: Y1 i7 l. x; m$ K+ `$ m( ^) k  A
trade-time
& ]$ q1 i7 r. u" l2 U;;
当前发生交易的turtle的交易时间" s: T- j: r5 [8 A* S' ]2 P8 g
appraise-give4 s% \) r: ~% t) N5 c  h' O; |
;;
当前发生交易时给出的评价* a0 [8 v$ [0 S0 Z  z
appraise-receive
6 l9 Q2 l4 y! A" K  i: ~7 ~% P2 X;;
当前发生交易时收到的评价2 \8 I5 B! Y/ E
appraise-time
9 l" D: x& \1 Y$ p- H;;
当前发生交易时的评价时间% S+ e' k/ l& a1 j
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
8 e- D+ C; j' atrade-times-total4 o1 K" F/ @( s% D4 K: A' u; s3 J8 g
;;
与当前turtle的交易总次数# x. ?" u$ o  Q# d& P" n+ a6 |
trade-money-total. t* z5 L9 K: p
;;
与当前turtle的交易总金额9 i0 Z& T2 n' ]( M
local-reputation
7 y4 ~. N& s5 ~% F* Y/ h7 O& `1 Xglobal-reputation
, W4 v7 X3 [7 x) F; O1 a7 u3 Ecredibility
3 l+ L# U7 J* ?! r- Q  `;;
评价可信度,每次交易后都需要更新
& C: t$ o! X4 i2 y8 T9 Z. wcredibility-all: d; @: U6 x7 F7 ]
;;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
# N9 Q/ `+ B0 i, t3 P2 N6 U1 V8 w# a0 P2 o! D
;;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0.53 z- ?0 {" d$ ]5 w4 e; G. x
credibility-one: J9 W$ V: |+ h; i# e7 ^- l
;;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
' y6 Q( o: i* A# Vglobal-proportion( w# e9 R4 z& A  f; \- T
customer
; v8 f5 z4 S7 t+ h: G2 o, H) q2 ecustomer-no
) M/ D/ }" V' h/ ]( k0 ?2 c6 Ctrust-ok
- w  v# k* f8 c: Mtrade-record-one-len;;trade-record-one的长度
  t& y3 |, C+ p1 @% B]$ _" v* s7 q% {  y) Y8 W

! c' w$ x# M, }- R;;setup procedure
2 C6 R5 B7 I5 _. U7 g4 ?) k1 ]
to setup
4 ~2 w) L9 b9 H; E7 A( a* f. e/ f* D+ ^! m  [9 Q* V+ k! u
ca
9 d3 x2 q6 G5 P* Z% d

- U- D( F6 i+ N$ z0 ^( `, \initialize-settings

) J; ], X/ N- A4 p
$ b4 Y9 r" r' n5 k% ^0 D* W! P6 ecrt people [setup-turtles]

( y7 Y' V1 K, [6 K5 T
# I7 @: z7 Z$ O6 rreset-timer
8 U- }* h5 R1 ]# T( Y' {
: @2 g% U! c5 E  o- a7 k
poll-class

1 R5 _( e  O& ]2 L) K+ [" T
/ I+ z- @2 R7 q  Osetup-plots
4 N: w# G) H/ a- E* g

+ j* u1 Y/ |" n+ E- `1 e  s: B* ]2 Kdo-plots
# ^6 C; t2 y9 z
end
: E* i/ D. }7 ^' |4 \3 L1 F  n3 h# @2 J) ^% ^9 I( {
to initialize-settings
8 P$ ~- T0 k" U( ~- @1 k: P9 v) _; d( V. ]/ I0 G& y
set global-reputation-list []

1 {! r( D. R7 r# J! J, x: R' v; y  V/ w8 y! @' @( H* t
set credibility-list n-values people [0.5]

& K! d. a/ S0 g; S4 g+ `2 M
* k1 ~* k' w; u3 P# R" xset honest-service 0
6 R" Y* a* Y4 d3 x' R- S7 c& r: O8 j

9 H, [* b% s: }set unhonest-service 0

' l3 [1 K, |4 u$ b" B. r0 u" g
4 L4 O/ I$ S- H5 Vset oscillation 0

+ }( L8 t- r* |4 Z3 a# Y- R# ]7 t( P2 o$ e
set rand-dynamic 0

; S( v) u- ^5 k9 L- ]5 M+ gend( U; T  j' A0 Q6 X
5 p" t- @4 |( L* j  q
to setup-turtles
' x3 Z  e: E! K5 C, D( dset shape "person"
/ p# j3 ^2 g- N# L5 vsetxy random-xcor random-ycor7 s$ L3 r2 {" t# D0 _
set trade-record-one []
5 |+ }8 o+ \; d$ |! @2 v2 U
; j+ c4 A$ s- c8 q. }( q8 ?
set trade-record-all n-values people [(list (? + 1) 0 0)] ; V! t# P0 B3 n5 Z
- U/ I' _4 I9 H" t
set trade-record-current []
2 a: D+ k8 x" K8 k8 s* B# xset credibility-receive []
) C0 A: V: a( ?' S& Xset local-reputation 0.5
! s5 |1 h: T% P! X6 |/ wset neighbor-total 0
2 ~8 ^8 p2 h+ E- Gset trade-times-total 0
# F' Y) S- L: w3 o  uset trade-money-total 0
% N1 `  u- }& \) k! fset customer nobody0 X# w1 G$ V; P" u, R
set credibility-all n-values people [creat-credibility]
; u; s, g: n5 B' u4 m" w6 Uset credibility n-values people [-1]; ^$ W( Z" E1 Z& i, \  T( T: H
get-color# I5 o; Q% G! Y! t9 S

' X/ l# T& }+ w8 N( \) l7 _# N' gend
, {0 ?9 ~5 R( N: V
9 M% L/ h7 a- B6 t& A5 p( n( Y/ {to-report creat-credibility
* f, ?" c  Y& k) a/ M$ freport n-values people [0.5]- M) \& x5 g/ i/ h& x
end0 b% a5 y( z% q5 K+ F, ]% e; ?6 }

2 f3 U+ F9 o! E% N' l) E% Pto setup-plots% j7 s% V! G. C4 t/ S* a! V

. B# g3 {+ g( y: Qset xmax 30
( q; X+ d$ H. V' I7 n

( U, r4 V# v+ M& l; Mset ymax 1.0
' S" `+ H% l& y) Q1 [$ L

) M, ~* T2 _; F" Gclear-all-plots
3 }( `8 @6 Q4 V: X: f

6 u) b6 T  P5 ^7 d/ Ysetup-plot1

* ]4 m% \4 ~: u! h5 a
- j. I$ h3 J7 {: H# ?  l" Esetup-plot2
: J: k) A. ^& G3 i; m
- V. k! Z& J$ }( v) A+ Y# H
setup-plot3
. \& ~! p3 |, ]9 {7 p' W( J9 R
end
( F/ r7 P& f' f2 g0 h" C/ s
8 A& `; b: ^+ r;;run time procedures
) B) r/ {9 S8 k; k
* w  |8 W0 Q4 M4 Ato go
! v8 x+ e  O# X) j5 z& m+ @! Q+ s( t6 ?
ask turtles [do-business]

/ W( Y: _' W' }% c4 Uend7 o, i# M" w) X* z

9 t9 h8 L% {2 _- V* T1 b7 u. Cto do-business 8 ~; v* d) C) q. O6 q& X
( q: Y# W  [7 v+ {" d" }: ]9 A6 h* j

6 x( A5 Q( h) e, t+ y8 f9 D! k: ^, O2 srt random 360
# C) o% n9 |- K, f' G  O9 a

) i# @* F7 D/ ?fd 1

( G- m( S% J" U) Q
5 \. Y% ]4 k* S. mifelse(other turtles-here != nobody)[
" y; w- r% E7 v. F6 L

8 [' J9 C9 A/ f' ~+ X% @set customer one-of other turtles-here
: _, Q) |1 {* ]
7 j% F# i. |! c
;; set [customer] of customer myself

0 `8 C- r+ s9 a7 [# i$ \! c2 U. J) Z* k) m6 f! _) w& H# J' b$ ?6 ?
set [trade-record-one] of self item (([who] of customer) - 1)' B) U  E0 X5 v
[trade-record-all]of self. r" Z& h; n1 v0 W
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

" c1 F! q% @. B8 z
& n- g+ l7 F0 L6 uset [trade-record-one] of customer item (([who] of self) - 1). s2 T, [; [) O8 e$ p$ N( z( e
[trade-record-all]of customer
2 k6 d6 t( m5 J6 A2 l

( V) G3 G% ?% U  j' zset [trade-record-one-len] of self length [trade-record-one] of self
' W. P  t  D: Q4 ]: q  T

# g' b& ~$ B/ C9 b9 u; Sset trade-record-current( list (timer) (random money-upper-limit))
. h4 W& h( z7 S# o
3 J0 o7 f% q0 J3 t
ask self [do-trust]# b7 k7 H2 `7 c2 G
;;
先求ij的信任度0 a: J3 l: \' L! Q& \- q: {
0 _7 Y/ f0 k' p' I5 K
if ([trust-ok] of self)5 T/ K" V  ~$ d+ f
;;
根据ij的信任度来决定是否与j进行交易[3 l/ j6 P* n% n7 a
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
6 J4 n* X4 I2 _! O" `
& B2 Z, B) h% R" o  @( [, b[

" b/ o4 e+ F8 h3 M/ O
9 M2 E0 v9 g: `  }do-trade

) g% V$ t$ J* A5 h/ e
( t% P. E+ A2 H7 Eupdate-credibility-ijl

: s2 j3 }3 |' Z: c
, [1 _' S1 p: V) V/ z3 Fupdate-credibility-list
; N1 q& Z  {& p2 I

7 G7 G, ^* O' |" j
8 ]' e9 \3 r8 y1 g2 }% s: A; A( lupdate-global-reputation-list
* w) C) `8 c3 }  V; c5 O6 w

4 Z( x0 q( ~/ M5 f4 g8 fpoll-class

* h6 H8 e0 |0 }$ w, ~% [- Y
; d4 Z! n5 Y6 z8 gget-color

# Q# I+ R+ ^1 p" G7 P9 r$ B! @9 V
: v8 o# O- V) }" w  Z]]
! O- t+ V2 G, _" x
$ [. ^" s, {4 f9 E: `3 v' _;;
如果所得的信任度满足条件,则进行交易
4 X, h, ~' v  y4 p- L3 I/ z1 }! R/ D% ]5 t' g, G
[
% J' _6 v9 i- h0 ^7 w

( E# e  T+ Z" X+ g6 [* X- ]3 N$ P' Jrt random 360
" E5 ?4 o9 e! D5 M* U; Z5 I0 W0 E
8 G, \1 i, a' p
fd 1
( w$ Z9 h0 V1 e; L9 q- G' r0 u

; p+ z8 h) n" e  X]

6 `  {9 u" b2 t' ~+ r) M6 j! v7 c) b  t# v9 U% `& X% M
end
& F7 p. Q# l% q/ d7 U* j1 L* G4 V9 {

$ ]! b' l. r0 ~& g8 l! M2 m: xto do-trust 4 i" k' p2 n+ W9 W1 j+ B6 V
set trust-ok False
1 E5 `2 t5 z# D
/ D- R$ C$ y' C7 `9 c
1 L! Z, H/ B0 j' h5 l+ r
let max-trade-times 02 u6 e5 B9 q: V7 K( O) Z0 W
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]4 `. X( L+ |' R6 z) z+ l( y2 i$ ^  ?0 L
let max-trade-money 08 x# @" ]  y' L  A9 b
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]( F' v" d$ P! f* S" n* F( }
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
+ U9 e' u) C* K/ g1 D1 |7 S+ _% {" E  `9 J' H$ p( |6 N, a8 X
* W$ B! P$ p+ H
get-global-proportion
$ _4 z+ [* w) D4 hlet trust-value$ X; P) u" R. u+ N) U2 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)
1 X& _# R4 \2 ~$ C2 D
if(trust-value > trade-trust-value)
3 f% ~2 T9 u6 c# ?& O" s[set trust-ok true]( ?' T0 Z; }% ?1 F
end
9 a& Y# x6 l  \% n3 L% [& C2 ~: }$ P
+ B$ X* ~* o0 `+ v; jto get-global-proportion
) c9 P# D, `, W8 `1 Kifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
4 z" n* q, d1 O$ a! B( R. z[set global-proportion 0]6 E+ b9 e+ J$ |! K
[let i 08 N  q' f0 N9 X5 u) C
let sum-money 0
- t! I2 h/ \) Lwhile[ i < people]! f2 H) ], ]/ {- K0 ?
[
" A' c* F* k5 ]& lif( length (item i* c1 n- I* U# f+ i7 @* L6 o
[trade-record-all] of customer) > 3 )

8 c  p$ _4 u& q. P9 f- `[' o) w. Q% w" |7 _
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
" |( T. @& _, p7 l) u  X. }5 W]7 ]. r/ C7 g( j1 i; E: q( U4 O
]( E+ z- Z+ P) C
let j 0
9 S" r: p; h+ [: h: x1 `let note 0
  {2 J, b7 W* w) o; Ewhile[ j < people]# j) {' w6 O$ K3 ?# P% k
[0 o2 t/ p; I) r. y' d3 v8 W
if( length (item i* S( h( y  E  k0 p
[trade-record-all] of customer) > 3 )

( t6 Y( g) n; `! v1 m1 s; x[
) Q; ~8 t/ G& B. ?, U5 T1 Y+ Kifelse(item ([who]of myself - 1) [credibility] of turtle j != -1). Y8 ~- I: e+ J; f
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
& s- C' K& r+ Q# O9 L5 c/ a[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
( v% M+ H! V7 j! c& C]
& I" g) g. D9 z$ u9 F* Z' v]
2 N5 p  I* B# \set global-proportion note
6 _5 ], s) t6 f  U% X3 D! s9 N]8 R9 \" v0 F& [, T6 o5 q) Q4 x
end
. Z& p5 z- D% c% d+ d; f8 J5 |9 ?& k1 p
to do-trade/ y2 l; i4 T/ `1 Q& x' N- y
;;
这个过程实际上是给双方作出评价的过程% o# V$ ^1 ^% K; V0 V% {7 L
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
# H- M/ q. f; s  Zset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价1 F. \: |5 N1 r
set trade-record-current lput(timer) trade-record-current3 [+ r$ f" ]" J2 U' G6 [2 R: j
;;
评价时间" T- n) Y: v( ?- }8 A
ask myself [
1 p* a* a$ S, {0 c4 hupdate-local-reputation
- g( a% @: j2 V# m& E" e; Qset trade-record-current lput([local-reputation] of myself) trade-record-current
: y$ R' C, o9 @]7 g: g3 K4 J( [& `. p3 L$ S
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
1 l. P+ J& a( M) L. L8 }# k# z;;
将此次交易的记录加入到trade-record-one* F! u6 v) i3 S% c1 U
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
* ~6 R  s' p/ \' _0 s7 `% ]let note (item 2 trade-record-current )
  q# }6 T- v6 R1 q  @9 x; oset trade-record-current
, P# L, G) ?/ r6 p(replace-item 2 trade-record-current (item 3 trade-record-current))
. j/ J  p" D- a, A+ m1 j
set trade-record-current
) H7 \, u3 v+ k, `4 D# {. p(replace-item 3 trade-record-current note); J: ~3 f  i+ s8 G% X) }3 T
' p) u' y4 a+ T9 W  z
  H7 j2 {2 M  P" v. c* _5 q: k: ?
ask customer [
% y1 m% Q( E6 p1 h4 s- `# @9 Fupdate-local-reputation  x: D; F0 [1 L, \+ x
set trade-record-current8 o' O5 o* T1 |
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

6 y% L& f1 B( c2 L]
! Z8 _+ M% w; y0 q1 f$ y& w( U, s3 X$ S  w$ o% j

9 K9 V/ ^% T* d$ S( `5 Bset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
1 c7 \8 x7 X4 K

( b' s) ]; k% `& H% {& n9 vset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))# F! J8 V& y3 e, I; p# r5 h4 V' g
;;
将此次交易的记录加入到customertrade-record-all
  D3 M; Z7 H1 i+ b1 iend
* |* f& ?6 w& H7 W8 R4 U! S- d8 J: X0 [/ j' z3 F7 }
to update-local-reputation3 t0 ]( |0 d* G7 e3 ]5 |$ G
set [trade-record-one-len] of myself length [trade-record-one] of myself
  T; X8 U  y+ t
, E# b8 l* o8 p6 g8 ]$ `0 Y
3 C0 ]- u, x% a2 R8 [;;if [trade-record-one-len] of myself > 3

9 j8 t) a. @/ ?) Dupdate-neighbor-total2 P+ f/ j4 k4 v  Y; ^3 K; `. Y0 C: m
;;
更新邻居节点的数目,在此进行
6 H# B1 J* ]4 R% wlet i 3
+ J* t8 E" \7 e0 z0 W* Ylet sum-time 0
) |, {0 `% N( j$ l' Ywhile[i < [trade-record-one-len] of myself]% `2 p# l! ~- y" \6 Z( ?+ \- M$ ^- W# h& K
[
# j8 T+ s2 Y8 _$ |: Y/ D1 Yset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )" E( t9 e8 o& h' @( w5 q, l
set i4 I! ^4 h; m9 B- l8 H% D' g6 Q, P6 j
( i + 1)

4 E: V  ?! @  @4 r1 m# L* g8 u; U]
' ?, }/ c: }, {: J! n- Slet j 3
9 r5 N0 [6 R4 w) e5 G. @5 y1 jlet sum-money 01 Y7 U4 L- a2 V
while[j < [trade-record-one-len] of myself]
  ?: Q( G0 [# A+ t5 y$ o[( |) \( y/ ^, b9 g2 m
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)0 q* R3 Y, Y' u' x
set j
, d1 k2 |9 c; d* c" q9 J" b) O5 c( j + 1)
* D8 f$ v6 I3 g+ G2 O
]
7 h; ~7 c4 M7 w) X* X  Y5 _let k 3
$ s7 N" n" f/ g5 `9 vlet power 0$ |3 |% w" n8 i0 K
let local 0
- }: x+ Z' t/ b- I1 f/ I7 ?- bwhile [k <[trade-record-one-len] of myself]' _! W# z! g( c. O2 K( A1 g
[* R& b  B$ M8 K/ [$ w$ g
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)
" I. k1 j0 M7 I  _  }  V* S) G9 t. ~8 ]set k (k + 1)
; c  z3 X0 P0 h* l6 b]
: N* i* r# `& g# fset [local-reputation] of myself (local)
. z3 a3 D% [! V9 \end
" u& |1 @! N2 n/ E1 Q0 x" P; Y; H% @! o" \, Y* `
to update-neighbor-total0 S# P8 D' b# C. e, Q  u: G

$ u% \" g3 a" H, S  [8 Iif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]* E2 f) B2 o1 i6 y2 U

3 @) }4 V& P7 l9 H* {' G. i+ U

4 f' k; \; c1 P3 \% Nend* I% O' }9 ^  ]' G4 v5 w
* I5 T7 w2 j* |. b; c" Y
to update-credibility-ijl , X" J5 P# G5 s1 w( v' H& U

! z* A; u, y3 B$ @( R/ H' ?, Q6 N;;
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。* S" t8 C9 u. P: e% B
let l 0
! q+ h3 {4 B9 F' n( M# @- q$ X/ lwhile[ l < people ]
1 T9 O' z) V; J! q+ t) d; q6 q( 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4 G2 d, K- `0 R
[
! E3 W0 z, R; J: W/ z) ~; k& ylet trade-record-one-j-l-len length item l ([trade-record-all] of customer): l, j4 i4 p/ t; c1 l
if (trade-record-one-j-l-len > 3)
! z# E& N6 D8 O. h) H+ [- p[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( q8 r/ r  ~+ c/ j+ r9 t2 c5 Q
let i 3
0 w+ N, y0 {8 wlet sum-time 0
1 Z3 k& a; v9 z2 @! r5 |" x, ^( Uwhile[i < trade-record-one-len]
, R  |4 c; F0 w: p4 {$ o[
- T& w5 @. M& \( l5 O, u+ {0 Wset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
, ]  y4 `- x/ W8 Xset i3 U7 g7 _$ S8 \2 X$ L
( i + 1)

* B1 b. o3 f+ B]
2 l3 V# f1 p# ^# [  flet credibility-i-j-l 0$ L6 B- c" o9 \5 Y
;;i
评价(jjl的评价)
: q3 \+ R2 ^" W# J8 S  `: H0 xlet j 3$ j- a% E, K; O! w& _
let k 4
" \6 {: {. }! l* ?while[j < trade-record-one-len]
% L  X$ d. ^& A5 ^; o" I[5 J8 S, i7 S% f1 r  N9 x
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
" y: Z5 H- G% [9 @1 ^9 I' _. L' Vset credibility-i-j-l ( credibility-i-j-l + (item 4(item j [trade-record-one] of myself)) * (1 - abs ((item 3(item j [trade-record-one] of myself)) - item 5 (item k trade-record-one-j-l) ) )/ sum-time)9 A% j4 n1 Y( }  \; w
set j
  l  n6 ^1 s& {! Q1 ]& D0 _: \( j + 1)

. ^, J* h, E: m+ M+ t5 g. L]) j1 \, T# q9 i( u& \
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 ))- |; Y+ p. z' p: C+ x* e

- q' V( n& J% Q- Z8 i7 P" s' Y. i

/ T9 v* A1 {/ }/ [' xlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))3 c! j# e6 B, t/ S% z. P* `) z
;;
及时更新il的评价质量的评价* }& {' t8 U* z; h4 h3 S5 a9 o
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]. ^# E- U7 H6 H1 v: O0 x
set l (l + 1)1 v( S9 ^1 V4 s" ?2 V) \, A* S0 J
]' I% G' |/ T. g$ Z
end
0 l& G% J# A4 }, T0 M; z- A) b, F  N  J( E' ?4 W* S- g5 f
to update-credibility-list
  D4 [& [( h0 S- Q$ @let i 0) V( w. q+ ^( B# X7 _7 F8 O
while[i < people]  {% ~0 G1 i+ g9 G3 X" J7 W  K. a
[& B4 ^' g/ s1 w# ^9 J9 d2 l
let j 0
* ^* v& ]* W1 V/ ~( W) z4 K* L3 Llet note 0, N' B& d; L' J$ C
let k 0
$ }& u$ ?. h* U! T8 A+ V! };;
计作出过评价的邻居节点的数目5 F( S' c) ]3 U& K
while[j < people]
  U# q; \8 Z5 p" X3 _' P[
) ^* C8 n( B5 h. i- z* T7 ?if (item j( [credibility] of turtle (i + 1)) != -1)0 U* d7 H$ r# V' U& g) g0 {
;;
判断是否给本turtle的评价质量做出过评价的节点
' m, u$ M5 @( A: _8 [1 r1 v; R[set note (note + item j ([credibility]of turtle (i + 1)))! A2 G* C* {. ?" f+ d+ [
;;*(exp (-(people - 2)))/(people - 2))]

1 X) b8 p( e. t8 G2 l; ^set k (k + 1)% @  N; \0 ?- O2 D& r
]# O$ V3 _2 r. j: t4 y/ n( N
set j (j + 1)
& a4 Y" s* F6 ^" p1 Z, A]0 F0 m: p4 @4 O* ?
set note (note *(exp (- (1 / k)))/ k)$ G" f( Q$ E8 g
set credibility-list (replace-item i credibility-list note)0 l8 G! a4 |, w, W) V
set i (i + 1)
6 [# ]& Z$ Q" |" ~6 U. w" I]
' N3 w3 W4 Z: c$ K: vend
/ g4 @0 b8 T5 x2 u# ?" ^/ ~: O6 j) e: \9 z- w! P' }0 Y( X
to update-global-reputation-list
$ X2 d' I7 v( ]8 f- e( F; Glet j 0% g& _; l  }' z& ?0 r
while[j < people]
. t6 S* F$ r; P1 P3 @1 c[; b3 t0 Q3 m2 U5 E8 ~7 x. H* K
let new 0
, s1 v/ G2 U$ D3 [;;
暂存新的一个全局声誉
5 ^* v8 J( G' J3 V) Blet i 0' q. t2 {& _# s) [. a4 W
let sum-money 0, V! T  o& S9 a/ [5 {
let credibility-money 0/ I$ p( h8 t5 m: c4 \
while [i < people]! T7 q! }0 j, X6 l6 W. }8 o
[& y8 D% Q3 [5 O: u; V
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
% R- q6 d4 F& {; E$ xset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))" r: H2 m+ `/ i) g2 D+ {8 E
set i (i + 1)
$ h0 G3 D! W  q$ ?3 o5 v1 ]) @8 z]1 p" e% b; y, M& K, Z& `, p: M$ D  g( h
let k 0
. R. z2 t  o9 \. X( \5 Zlet new1 00 k' c/ C7 \9 V/ ~5 E4 _
while [k < people]
+ m: Z0 ^: H* L; t( z[  d% F' K0 U& ~: M" N
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)
( \- e# J- B! @& V4 ~6 ^set k (k + 1)
/ i, R- |, z9 V' y) s]# s) \4 a6 b' D0 V8 H/ a2 |
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
: T+ N% g5 z- O0 p7 T7 y  oset global-reputation-list (replace-item j global-reputation-list new)& O8 p2 L1 {+ D8 F& m& l
set j (j + 1)
0 y" |4 G" [  B4 T+ f]
$ \7 v( y: l' i- W) Send
7 O! @$ I1 L4 j% E! U& z* }6 \# B4 H. V6 [( c
- l) k. U6 z+ F; w* @: w% d7 c# b4 g

% G# N# }7 E, }# P8 L& `" _9 ~to get-color
1 }( h$ }& ~: m) f, J, p" ~# |8 H3 c7 P/ s
set color blue

/ Y7 ]  t3 F% C( Q7 J9 \end1 Z/ i0 B3 ^1 p9 K, e
5 A9 w9 E) x1 I+ e. [% v5 `
to poll-class$ p; r$ L* y0 q* ^! g1 Z
end
) a, K! p2 p1 Q" b0 L+ D- S; e5 W* n4 i
to setup-plot10 k/ i6 Z) N1 B

$ i( O9 {6 L' P0 D$ P( m% [set-current-plot "Trends-of-Local-reputation"

  E7 A1 M* A  J, y9 l# o
" J; C& Z/ K# t5 g. iset-plot-x-range 0 xmax
" [2 ]# F1 G# T

6 o0 ]# q5 A% z7 ?# \2 tset-plot-y-range 0.0 ymax

) k5 a6 D' g, c9 mend
) D+ o0 W9 r! D2 J
4 v5 g$ n1 B) r# a) G  @" n0 ^( eto setup-plot24 ?6 F) y2 J+ K, T) z

$ ^1 Y5 k# j- p8 s% w7 W( ~set-current-plot "Trends-of-global-reputation"

" ~7 H5 |; L* t# t- S0 i9 R% x! i. J2 z" a
set-plot-x-range 0 xmax

+ K7 l* }% I) G: {. ^' x. \% J* k0 r) T2 i; b$ }' [
set-plot-y-range 0.0 ymax

" B, Q7 H3 E1 I: q" P) q  s3 {6 Yend
4 j! F5 H4 F" ]5 L* d  i8 M7 U7 ~& ?
to setup-plot34 [6 N. V) l$ i  S; }1 U9 h, ^
6 l1 [6 p: S4 [2 ?! W$ S
set-current-plot "Trends-of-credibility"

- U" R9 v* q$ O* A4 U  M: [" p# d6 N4 K6 X7 F: O& R
set-plot-x-range 0 xmax

+ b$ V% O% M4 U. |, ^+ ?& |4 A  B( h7 `% Z) Z4 u) v* `% c/ R
set-plot-y-range 0.0 ymax
0 o. b/ r' C6 c4 M( W2 `' Q% Y
end
$ ^2 D4 ?; \' P4 i7 U2 R4 `$ K& ^
% Z, z2 X2 y, p. ^9 kto do-plots
2 f0 d/ W6 \: R6 F) i8 o  p) Kset-current-plot "Trends-of-Local-reputation". _. X! `# v% D- _  R' `# S
set-current-plot-pen "Honest service"
) }; j7 b$ K: p! w7 {% Kend
; o9 Y# r+ c' o- }; T7 H
3 u4 h2 N% ~* V0 S2 @[ 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.4 w0 l1 M& n. J+ X; X

" i+ D& ~5 ?2 _- I" ^: ~# e8 U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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