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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:
$ r! w3 ]2 V) S* d0 j/ jto do-business * q; i. N- D; O6 G3 S% A, F: e
rt random 3604 l9 L. ^6 [' g: ~: {- [  p3 J
fd 1
* W% I: [$ h0 n% E5 H4 y ifelse(other turtles-here != nobody)[( e3 N; U, ^9 x9 l; |) q7 t2 _  J7 u6 i
   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 w: z; C/ x# l/ j  M' z0 |. f, d   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
, j  B8 M+ F6 z8 k. O3 C   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer" Y* x; V! H" n2 P, D
   set [trade-record-one-len] of self length [trade-record-one] of self
. C  c% X  m/ ^. [   set trade-record-current( list (timer) (random money-upper-limit))
3 o( s  \2 H' w% l1 \& w$ l! L
8 u- L! y2 D% V9 K1 ~2 i问题的提示如下:
: k7 e- t3 g- |" x$ C( q8 d) |* a5 d$ j# I& H- Y/ V3 T9 j) R
error while turtle 50 running OF in procedure DO-BUSINESS9 i9 I2 A4 n3 G3 |% C- e1 c
  called by procedure GO+ C) g$ W2 _0 b1 Y$ {% [% u7 Z- h/ L
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
5 C+ Y: b9 _6 x& Y  E& ~3 S
(halted running of go)6 F7 R. i. g! e  ]: b+ a
: @; d/ Z# `3 f+ G9 o2 M
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~~
5 w6 z5 A3 O2 h/ ~3 p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
6 ?  P3 W7 z- {$ x7 j6 D, {4 ?2 M( Zglobals[9 }& q% j7 K' b8 ^+ R/ E4 I. J
xmax
; }$ W! B4 L* U, ]; ?; \5 I5 m1 \1 Nymax
# v9 }5 i1 W: W$ E- l; f6 x2 G) {global-reputation-list  M- G. t. [% X6 C

4 V4 {4 s) G/ [: _; t# D3 N2 p;;
每一个turtle的全局声誉都存在此LIST" h) n- A% z  H7 X/ z  ]& \& j6 l, k
credibility-list+ M1 g; c( F( G0 L- _
;;
每一个turtle的评价可信度
7 g& a  ~( X. g6 f; uhonest-service
. W0 y6 R3 Y: l9 O1 _2 s8 Zunhonest-service: d2 J6 k; Z+ r; X8 D& Z
oscillation
7 e- F6 D1 @; }% Z# Irand-dynamic9 h- b5 l' {( P5 p7 s1 V1 r! v
]! U+ k( s# `9 F- c
: X6 n5 \( n$ _/ e
turtles-own[
+ m5 j2 |+ I- D0 {trade-record-all2 R; I( _' V6 g; h
;;a list of lists,
trade-record-one组成
+ d; j# |0 G$ y; L% m7 Z; Ztrade-record-one
1 b, g6 Z- i; Q5 y0 y- i;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
- T4 Z: x+ i# J  j  _8 z! n3 o# i0 l2 S  j! L% a& l; }( 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]]& U- C) y% C) l  x: R
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]
1 x! u: v; `* g7 M/ b4 X5 `' X; Ycredibility-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+ [7 |+ W# d8 g9 c1 C$ M$ ~
neighbor-total
$ e; I" @2 I) z! m4 k;;
记录该turtle的邻居节点的数目
: R1 C. w3 t# u9 C! A/ ?. J+ w6 b5 `8 ntrade-time- H% l- S6 {/ x8 b2 G# ?
;;
当前发生交易的turtle的交易时间8 S" R( t6 F0 g
appraise-give
+ B  L6 n) P) W8 {- d: f5 I;;
当前发生交易时给出的评价
& G4 J7 f, W; b( p) f2 `7 I0 lappraise-receive
7 d/ ]" t( l" q6 \+ R" z; k% ]" ]5 s+ };;
当前发生交易时收到的评价
* O: W0 J! x4 o) q: X/ t/ D- `$ S/ cappraise-time
% [0 K* F0 Q5 F. }' _% }2 Z: \;;
当前发生交易时的评价时间
/ l( E1 O( N- \6 N/ _local-reputation-now;;此次交易后相对于对方turtle的局部声誉
9 R& A. e; b6 G, F" Itrade-times-total
; X  q% V& u8 X9 m: h;;
与当前turtle的交易总次数, ]) ~. ^9 N0 D1 S9 n, z* A
trade-money-total
8 t' o, b: {: G9 m* `0 b/ i;;
与当前turtle的交易总金额
0 s/ \( I, M4 i& F4 w. e% W4 d9 @; Hlocal-reputation
3 r! t- S8 z( z$ {; ]9 V0 Mglobal-reputation& C' [6 T# R! d- k: ]$ g2 M3 x9 i
credibility$ G( A. N" k$ H
;;
评价可信度,每次交易后都需要更新  R4 T- O# B0 d7 D
credibility-all
2 \% Q& k/ ?" M;;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! R# r& a2 w& j# ~( x

& u" o; D* Z; P7 A;;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0.59 J% H3 i, L, C7 N- |2 j% N( ^
credibility-one7 L6 P3 q1 e6 E' z* f' i
;;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
, V4 x6 ?; A/ E5 z: G+ Oglobal-proportion+ Z/ G0 U0 O- x3 J3 S
customer
7 u' E* i3 s" f+ @customer-no
6 h$ ?; \! }$ Q' _trust-ok
- w- [. d3 ]/ C: J: e. M" htrade-record-one-len;;trade-record-one的长度
& c" ^; Z. O8 b( U]+ j% `$ K' A2 [4 `3 K" r
9 a0 Z! W+ H( T2 {
;;setup procedure( u" h8 F$ F# m$ C; ?7 b/ u
) b- z1 X7 i/ B5 ]" {3 g
to setup& b0 r: v/ l, \. g1 O
3 k/ e# n' b% r* w
ca

6 B; B8 l1 t4 g4 n
: D' d0 f' U& r1 [- binitialize-settings

3 `* p; |0 w/ z% n% D/ S5 K, T0 W' N) B8 a8 c4 o
crt people [setup-turtles]
3 d. Z" e  a# E

. [) V  r( ~& H0 n9 s8 K! y7 B, Zreset-timer

0 y( R- X# U3 Z# W5 Y
& E  x: R( A' T+ vpoll-class
* U$ H/ k5 E5 i

0 T6 I; G, x( a& B  n8 [setup-plots

" D3 _8 n) j2 O) i, ~( D2 l8 U, @/ l0 B  f* {. F, j
do-plots

/ O5 F$ u) M8 n& X6 Qend
' ~8 h3 ^$ r) {$ A. I+ j8 C9 ]% Z# j6 c/ F
to initialize-settings
; q$ N- d# B" F- p! V
7 Y" T% M/ H5 W% U+ N" k7 B+ g) w: Zset global-reputation-list []
. o% Q8 x. r6 B" u; ], R  @

/ z9 l* p( j% _% X' _9 Gset credibility-list n-values people [0.5]
9 n+ r7 j' |( p. s

1 ^1 Z) n) E+ ^3 |7 xset honest-service 0

7 h4 E1 R* n, H$ _  H$ }3 y5 r: V; s# [) }
set unhonest-service 0
  J$ s' K; F" j, S% g; u
- ^; r& S4 d( j, J( J% w
set oscillation 0

4 B& |3 R# f7 f, R* v  p, I( X/ N# F7 l' i0 ]6 m  }
set rand-dynamic 0
0 m2 b( o" I3 L. y! [
end
5 o7 R( A# W2 ~/ F+ E: Y$ R) ^/ [* s) K  e; P0 I) q
to setup-turtles $ Q+ |3 I0 n) M, k& q# l
set shape "person"
+ q0 V0 `1 M: p9 f/ W9 A1 jsetxy random-xcor random-ycor* k% T) C! r( O* s1 s
set trade-record-one []
2 E9 m) U. Z6 k" e) G  R$ ~6 R; f5 T

) k; Z) |% _9 {; c2 H" fset trade-record-all n-values people [(list (? + 1) 0 0)] 1 [: H6 P) W- y! d: v. E" X2 [$ L
9 J$ E. A2 c  b6 E
set trade-record-current []" c% F  \$ j& z
set credibility-receive []
2 K! j9 H# t8 i- _  d) M& F) ^$ Eset local-reputation 0.5) j2 e& @( C- D, f
set neighbor-total 04 |" H. |- F+ C+ \! S& W7 x- {
set trade-times-total 0
/ f( S# {6 V) xset trade-money-total 0  b, `' b+ M& L4 b) J. n+ h( G
set customer nobody3 w0 m! p" R# T( Q  {0 L
set credibility-all n-values people [creat-credibility]2 N" |' e- Z! A% ]# [' v
set credibility n-values people [-1]
! Q+ q7 [7 x& b' M! z) ?) D1 kget-color8 R$ B! @" z- k

! N  C( m% L: [5 f* m6 {, Iend9 r, S; W: ]+ e0 t
$ R, K; T, v% U% D9 C" N) o
to-report creat-credibility1 ^- [3 j( O5 f- [" X: s
report n-values people [0.5]
7 o, V9 H" f. d- {" V3 o7 j+ fend
# x& X1 p4 E; u0 g$ @% Y  j& [5 L. i' A& ^
to setup-plots5 F! I. F2 r) p: _- k/ {

7 w0 B$ D0 t" q. p  D# jset xmax 30
$ {$ ^/ s0 C$ _2 L3 F1 P7 K

  w) [! b) O- a" N& `set ymax 1.0
+ x0 v+ K- R5 j5 l
& W# U6 v+ K) `& ~
clear-all-plots
5 Y8 V6 b5 t1 y. z- v6 v

% ~- d% n. @1 W5 s" \/ i% r5 bsetup-plot1
, t5 d! R9 T% M& e) z

$ q5 ^* ~; i# g+ l  o( [. Z' P$ C+ Jsetup-plot2

* [( u2 h( x5 F* b9 r% l* Q8 H
9 K6 q1 }: _9 n+ ~; u) H; V- \/ [setup-plot3

& [  [5 R0 D% v0 F3 tend
) r! ]: n+ U5 Q/ q+ w: I% q1 f: Y- c' H# E8 ^
;;run time procedures
) N* S6 t: |+ i1 i1 S
6 b" Q& h: K) `; }+ w3 h- gto go
$ ?6 V, `0 y2 E6 _4 }" k2 H. a- m
ask turtles [do-business]

6 g5 Q+ z+ ]1 }, d2 ]/ d! q: Aend
' H5 Z  U5 l* q8 ?6 P" d+ X7 B2 r1 w3 T1 y2 W
to do-business
$ i2 a' ~% a9 y& e6 u$ n

" G, e$ N& Z; f- L) J
, X- n% L8 E$ y' u0 z5 Frt random 360

  k; X& l# r# r, I, `
% b% A7 f$ M' ?# e% ~fd 1

- W5 {- b' y: y, d. }8 B! H+ ]1 @2 k9 H5 a. b8 r
ifelse(other turtles-here != nobody)[

% Y. J6 Y& R2 I0 F6 n: J& \+ Y1 C
6 S6 ~8 G8 B$ X% O5 A5 l/ E& mset customer one-of other turtles-here
0 @8 Z  H7 T* \

* Y6 G; F2 l+ Q& c) ?, [;; set [customer] of customer myself
$ ~9 J3 d" J% r* k3 Y) x$ N6 C8 a  h

# i3 S9 O% P6 q- h8 fset [trade-record-one] of self item (([who] of customer) - 1)
* n0 h) S- T$ e$ D[trade-record-all]of self8 K  J7 D+ d1 O+ r
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
8 @4 m2 _2 Q* [8 j, V, k

9 Y$ X0 ?8 e/ r0 q- Rset [trade-record-one] of customer item (([who] of self) - 1), `# g/ h4 Q0 U9 _$ D6 _; j
[trade-record-all]of customer
( G3 ^- q6 k4 F' k: r% P

0 e0 {, D2 C& `$ b# v9 Pset [trade-record-one-len] of self length [trade-record-one] of self
4 [3 n" K' \5 U$ q4 A# @
) T! H( A6 q4 G
set trade-record-current( list (timer) (random money-upper-limit))
1 E) v8 A5 I# d) T" |3 u/ t. R

) f6 E! P; g/ t- D# e7 \ask self [do-trust]
# E3 S4 B% A! t0 I;;
先求ij的信任度
7 x* z/ O; A0 Z; r9 M! V3 E" l. k
if ([trust-ok] of self), I% R/ j" c- ^& i; L
;;
根据ij的信任度来决定是否与j进行交易[8 G6 k* P. J# z% f
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
( {- M8 W$ {7 n" [# _" b9 n* }2 q$ f- j* q* O4 `
[

$ I) @- _) a& N, _
* `" T+ }0 l+ U/ m9 xdo-trade
8 k7 T  G$ r# L+ X+ `

( D0 Q$ L5 D, d- Gupdate-credibility-ijl

8 i# y! ~* ]' H3 p2 x& A, B8 Q1 D5 p' L. C5 I' W! U8 _2 H
update-credibility-list
7 i) F1 V4 f" A+ a: d
% W% f% U0 G# x; g; Y
- ~: ~! V/ E' I2 f. Q3 J7 K( Y
update-global-reputation-list
1 S. Y( }0 b+ x8 p; i' f0 {
3 i  R$ g0 x) m
poll-class
; b& ^+ T5 B5 O, x$ n" S
! {: z$ F, j  y% L+ e
get-color
- n/ a) A* H- v, C6 g7 h5 Y5 X

+ q/ ?( S& A+ i3 o, f% n+ v) ]: ^0 Z]]4 O6 D4 V# m, N% ]6 I

* A' O8 w2 y' p5 u; F% F, k1 y;;
如果所得的信任度满足条件,则进行交易
7 y5 F4 }7 ?5 y) g9 K8 h6 \. |1 L, i( F% L
[
1 z% L6 f! B/ o/ f( Q

4 b; d. ?! k2 R& Z- lrt random 360
* V/ m: s; x& ?/ ]
' j3 {. X; |" e& p$ A" O
fd 1
1 C' K  b. ]& o, S4 h, n
5 T  R* _$ Y* |( s' }
]
5 Y5 K8 b( L: N
9 W  B) V$ Y% x* |" c
end
' S9 o  f$ W1 p* V( w* A& B( \
0 A  l' \( c) ]; Y/ B1 L
to do-trust 0 h6 R" r) u2 \6 X4 n
set trust-ok False4 V2 n% Q- J% |/ f9 R; ?

, w- B; x. K: b/ c
2 l3 v7 q: d5 |% c' Y8 d. Z
let max-trade-times 0$ J) j5 t% C& z( e2 C
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
2 \% }3 A2 L. K+ e0 plet max-trade-money 08 a! }0 w1 Y) X8 A
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
' |3 e+ x. [( K+ Blet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))$ z' `. x& e/ |! h
! |: r. ^4 Q# K9 `
1 Y& n6 o4 }6 C
get-global-proportion! A- {( X7 e+ H! T  o5 C
let trust-value
0 _- U. ~+ R5 A  e! H- o) w1 r. B+ R# alocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
; L! E) Q2 Y4 m1 d6 w9 u( O6 X$ Q( H
if(trust-value > trade-trust-value), m. d  u: j- K) a! S# a: N
[set trust-ok true]+ ]1 G# N3 O, k
end
9 O, k8 E( p2 Y
' D- n8 r0 J# I- c4 Nto get-global-proportion
6 g8 U7 a( L$ l5 h. e+ Qifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
% Z) \; F2 |6 f/ J[set global-proportion 0]* W1 l7 n  e' m/ b/ t1 m7 t3 N
[let i 0
; K: o, U: M! |# y9 T' q6 h4 r5 Slet sum-money 0- t& m2 P- O- p, j
while[ i < people]+ B" L& J) f+ q. g; ]" {
[9 b" i' E. y% B1 p
if( length (item i) a( R5 U1 C& x3 J# a7 C+ }
[trade-record-all] of customer) > 3 )

7 a4 U: r$ ^" L3 ^% l[
) [" B# W2 J* D) T8 C# Lset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
, P4 j1 g. l6 c* l5 D2 ^, `]( `9 U) ^( l( z  _; T( A6 d
]  _1 b- ?; I7 l2 `
let j 0
7 E$ ]5 e/ R2 I* b  Clet note 0
9 J* ]* G0 _, h; _while[ j < people]
2 o+ L) C4 s* f[
2 F: p1 A. z- [9 e' y$ b: iif( length (item i
* F5 K' z' c# N7 D- H9 o[trade-record-all] of customer) > 3 )
5 H$ b# f7 B! |5 i3 w( l
[) L$ u& ?7 U  v
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
5 Q# t# x( W; v/ ~: c# v[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]6 S. Y3 O/ B) L- ?( m& w
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
1 o0 u8 C( ^" h/ ^3 q7 m; i; J]* [2 _2 V% ]4 r" R8 z
]
+ C$ R' @: r/ x8 P$ E5 K: tset global-proportion note: P# p& l& \) N5 \% g% W
]$ ?2 h$ p( N6 I5 [. B
end4 [" Q* s1 X6 B3 N- Z0 I
1 f( w9 D. _! m
to do-trade7 S( \  Q3 j  \* k9 A& E/ u- U
;;
这个过程实际上是给双方作出评价的过程
2 W+ |3 R; y& T7 P" [6 P4 _. Oset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价4 _+ u4 m' T# c4 P+ n0 u/ V
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
1 @- I* @& ]4 B2 h5 N2 Kset trade-record-current lput(timer) trade-record-current
# o& W& H+ v; L- y;;
评价时间4 ]* \& ~7 w3 I& o+ j6 Q$ g
ask myself [) L* X0 v3 T" L6 l! s& H
update-local-reputation
& ^& X' R  O! ?8 k. y) N$ R# ^% C/ bset trade-record-current lput([local-reputation] of myself) trade-record-current, q/ T, _+ v% }6 S$ L
]
& ?- @0 Z" l" M: q! s: pset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself- A6 M- N9 I/ u! ]  ~
;;
将此次交易的记录加入到trade-record-one
2 U/ J9 k/ i! J) i5 \set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
: i) H3 s0 d1 Y' slet note (item 2 trade-record-current )
+ B* a9 {" j% c6 Q$ ^" |/ fset trade-record-current
9 }3 b5 y% S7 n8 G(replace-item 2 trade-record-current (item 3 trade-record-current))
* N+ i# K$ a/ q8 Y
set trade-record-current
0 y2 g+ @6 ?& b3 u. X' ^/ o9 j. n(replace-item 3 trade-record-current note)
' K5 _/ ]! D8 G# Q5 t7 k
( z4 ], S; D8 N, ]) @
, `! ?, j1 J; Q: u7 v, B
ask customer [
( I5 I; R- q& f% x% B3 x: qupdate-local-reputation
7 v: U5 E, b0 @* J+ @set trade-record-current1 O) X  t, z1 V2 o
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
6 M  d! A( r# b& t1 P% _
]" ?# s2 {5 K) j! t& O

$ }2 l) ?( q, h; |
* w% {: n9 v' Q8 h" c6 S% b& }
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer7 x* s7 l7 x3 d% h$ B/ n$ `9 h
' D# i5 R- j: O
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))) B8 [/ e3 U0 E9 F1 U, g% S% I
;;
将此次交易的记录加入到customertrade-record-all1 x5 n! D- {, w" H" u; p
end1 Y6 R+ X: q9 e8 j0 E: b/ d- g2 G

/ s# ^) g  Z$ ~, Pto update-local-reputation5 N* E7 f/ H& T, d* o- B4 |
set [trade-record-one-len] of myself length [trade-record-one] of myself) w9 z3 _- w& n) L/ c

: u0 W1 e- U8 I" P3 m8 \, M: U
" t9 p. x& `! y  C;;if [trade-record-one-len] of myself > 3

% q/ c. j5 i' u8 I; `, }update-neighbor-total0 v+ J5 {, f9 p) t" I( [
;;
更新邻居节点的数目,在此进行
) _9 ?: Y# b& Y4 H+ klet i 3
  ?! i4 p( R0 y) C& K6 b) ]let sum-time 07 L4 R$ t# a2 H: ?% _# i3 H7 Q1 J. y
while[i < [trade-record-one-len] of myself]
; j  W& X5 e- P7 G/ T+ `/ {$ M[
& n6 s+ Q3 H2 r& D' q# u- tset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) ); Q/ p: h4 r7 T
set i
0 X- x+ `4 j$ C1 \2 u% u( i + 1)
( J# |' l$ t+ D" D4 V& X4 D, y
]% P6 }; ]9 Z5 Y( a! `
let j 3
; ^& p1 o% d5 x  i: m' O! Flet sum-money 0
! M% @) R0 m8 ?4 }- K- f7 M4 vwhile[j < [trade-record-one-len] of myself]# h+ j1 K; \6 a' f4 t9 Z
[
) X! n( ~& P+ C5 _( 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)' I( b8 Y- p+ T: N
set j7 A0 b# Y  Y8 {8 {
( j + 1)

7 B' E( @* @+ ~" C  p3 U9 c]$ N9 r/ d/ ]3 M6 M* u# K2 L/ `# b7 x
let k 3
' c9 G. n% |$ c1 _; Q+ Jlet power 0% F! i' Q+ O. H
let local 0! a6 \( ~* {5 X0 G9 R
while [k <[trade-record-one-len] of myself]- i' v# }& J3 {) m7 S$ m5 [/ o% }
[  j6 N2 C1 _, K, |
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) , J4 t7 l& p6 [& P
set k (k + 1)
* i; L. l1 F! T7 t/ q]/ a6 m3 [3 S  e8 u6 i
set [local-reputation] of myself (local)
" I3 N  W$ R. n1 k% [5 Rend0 b* B" ^' }. f% k. o1 g) y
( c7 X5 w. I, {, B* C* Q) e. \
to update-neighbor-total
/ x. G; }* J( @. c0 ^3 Y8 O( `( s' }1 f
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
; V: W4 u! d4 L) S" v; O/ C' j& ~3 `# }
/ y' V$ b) g  w4 C; i" K
end5 u* I- V; T' E; x

( |" F) }" ]5 v! u' R1 u5 [to update-credibility-ijl
4 d1 Q; y( i& _3 ~$ B& G# l. H' @9 j) @' ?& s+ T
;;
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* R: E$ v6 M" p* Wlet l 08 D# T8 K) Y( [
while[ l < people ]
# Q$ P4 V% H- y3 T, v;;
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# x2 E' R2 L, K9 _4 e9 p
[- D( l9 R5 {. i& l/ a4 V; Q9 n) v
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
2 ], v. a2 b( R# H- ?! c7 Z6 [if (trade-record-one-j-l-len > 3)1 b# r- t. r% ]  `- r1 w, d
[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
4 X3 C; [& p% f( L$ Plet i 3: t9 n: I# [# F5 u; b1 r
let sum-time 0% z7 l8 [! l8 \! C8 @. \
while[i < trade-record-one-len]( A: ?! `2 H( S+ C
[9 L, C" \- K" u# n  Y: D  P
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )& t: G! d+ d* ~# d' R7 Y0 G4 M, @
set i
6 h" a, t+ u7 k8 h( i + 1)

% K- S% x9 D9 M- [7 f$ y]$ `- l8 }' K6 A$ u4 W
let credibility-i-j-l 0) M( M1 c, h0 F/ [
;;i
评价(jjl的评价)& \: h5 L* L& |9 I4 g- U
let j 3
4 N% Q! O. B! z! d, @3 mlet k 4
# h& K* Q0 ^5 R/ y: \+ ^while[j < trade-record-one-len]
2 K4 F; p3 @% F3 |* ^9 l8 M! G5 f[& S/ H0 T$ l% N; M  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 ^0 R( z4 {. x0 [  C0 h! b8 y
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)
# K8 A* _0 {6 s2 n6 n# T5 A* yset j
9 e+ ^! D/ Z7 A! b( j + 1)
5 t2 v" ]9 c( |1 @) y& P
]
6 K9 W) q# \" ^' o  M' }% }. Z# d) bset [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 ))
; ^9 D: g! T# }: r: P, r  k! t9 x8 h

- S) o; o% e& y# E3 Wlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))& q9 A6 e6 I, o- _+ n! _
;;
及时更新il的评价质量的评价, |) P$ a  `4 q, V" F2 ~
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
8 l0 D* Z) q$ s' cset l (l + 1)5 O& ^& d8 h6 u' r
]
' \' {% U8 I* \. g# O5 E- _end* ~' s( Z+ y5 A4 h

1 C+ {& V! m' I# u. e5 W/ D( Mto update-credibility-list8 x" ^! G5 A3 `/ G- v- ~
let i 08 i7 Y' M. o+ Q
while[i < people]
, e: Y1 i+ Q. x! z[+ i  J9 n# ^2 v  B1 y. y
let j 0# t: i) U, D9 B% s5 e* R1 O% P* H
let note 08 W1 y9 U* E/ |6 |! K& R  m
let k 0
' E, W8 \! k, b+ Y0 O;;
计作出过评价的邻居节点的数目9 e2 h! ~0 L3 s$ w
while[j < people]
8 d# B9 i8 @4 i) f9 E[
( e) a6 p: {6 ^; w7 zif (item j( [credibility] of turtle (i + 1)) != -1)
/ e! k# L# ]' V6 [* ^- i;;
判断是否给本turtle的评价质量做出过评价的节点
& M. U0 r" ~0 L; n+ l[set note (note + item j ([credibility]of turtle (i + 1)))
. ?3 ]  h9 G- e' D, _& k;;*(exp (-(people - 2)))/(people - 2))]
; Y1 ~, |7 Y( e6 m
set k (k + 1)
" e0 h/ Y% G$ g! o0 Y, u]
# B2 m/ R! f6 J7 n$ Fset j (j + 1)
' j* s& E; K7 U* K) r0 [  E! B9 Q, J]; V, ^9 n1 H3 J$ K7 [5 G  a/ ^
set note (note *(exp (- (1 / k)))/ k)( o9 t1 D" ~. w- i9 x1 m( ~& ]/ ?
set credibility-list (replace-item i credibility-list note)
- p! L  c& }- H- H/ `set i (i + 1)
% z; g1 {* _4 z  x# x; z, w$ O]8 U) t! q( J4 H
end
% b, F% {1 _& @. _% }
3 G. o; Z) R6 A$ E8 ^to update-global-reputation-list
- u$ q# Q4 f# Clet j 0# p7 ^0 D& B6 W/ ^3 M# a
while[j < people]
3 |4 u4 q: {" h) a4 k( P/ d. U9 Z[8 M; U' s% Z+ t: F
let new 0
) E2 v- C( X/ k) h5 g' |2 A1 |;;
暂存新的一个全局声誉, x( X! _! T! {( u
let i 0
2 B- w2 |, G( m0 ^3 }7 Q: hlet sum-money 01 C8 {, q" w- u( W" v1 m
let credibility-money 0
9 N" U* I7 Y0 P$ Twhile [i < people]* k# \' T. P* h8 L5 c
[5 C: h4 O0 J+ z
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
( e9 R: `! r6 W: v* kset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list)). `2 A/ q* s4 i6 U
set i (i + 1)! b. z% L; _7 x9 V& U4 E
]
8 l9 m4 o* @  R+ Q0 Rlet k 03 {  z" N  j( z
let new1 0
' x7 B" x, ~0 q+ F/ ]# owhile [k < people]
- |2 t' U! t+ P[
4 \1 r: b* @' ^3 \1 v0 }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)! w4 V4 m1 `+ _6 r5 D" r. I+ _4 l
set k (k + 1)
4 Y0 E) H1 c  A- C! k) ]]
3 B; s5 \0 k, Q  K* w& ~+ R0 Qset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
& ~: `" e/ c) |7 Zset global-reputation-list (replace-item j global-reputation-list new)
8 ^* J' o6 y( e% Rset j (j + 1)
+ ~& {- [$ t5 e2 W]: @, [# `0 Y5 l2 d! ~3 t
end
% ]6 x7 O" S( F- S% y, D% G' r0 _. r+ w; Q6 y7 [; F/ q
) T: i% w% W! X/ @' q5 @

/ s# a# v% j( a9 y. c5 bto get-color
$ A+ {% z% L) G9 X& @  f; Y
4 U7 H% E8 i  P( ?- Aset color blue
* E9 m7 `* B2 D* h
end+ H6 T! }9 Q( k) l4 N
' M6 ~& }5 U9 ?
to poll-class
- ^8 ?, |3 h; u. ~' Send
9 E8 \( g- d/ o+ L# @4 K/ T
0 U+ n6 j& Z' d) J5 c6 V7 Rto setup-plot1
+ K$ @0 E9 g2 a8 T1 K4 t
- I' f+ w+ b. Q. K' bset-current-plot "Trends-of-Local-reputation"

; Q1 @& V1 X- ^6 O6 k8 ?1 i4 w" W' C# E4 J& p4 r5 G- c
set-plot-x-range 0 xmax
6 u  t* ?2 y  \( S" U2 L3 p- j

6 ~% @  J  @# J( E% Gset-plot-y-range 0.0 ymax
' L3 z6 Y* u) _- l
end
. `: B1 W  c* T: j5 t- w6 j# O( ?9 _: @. z& n
to setup-plot2
- \4 v) ?; w0 E4 F
; [, I3 a- o$ Mset-current-plot "Trends-of-global-reputation"
# X8 _% d' D- T9 O  A6 `5 }

1 U0 j4 x0 p7 n9 Aset-plot-x-range 0 xmax

/ W" [0 I3 W6 Z& X( e) ?0 u% F, Y+ E" A; u
set-plot-y-range 0.0 ymax

0 A6 T' S* Z: ~. `0 cend" W8 Q9 O+ Y* }, D

. J$ Q/ t, ]2 m$ s2 x5 rto setup-plot3
1 ^, a* j4 D7 f  U) x2 j0 K) q. h& ^; I
set-current-plot "Trends-of-credibility"
2 h! f' Y2 J1 q0 Y( q
9 b1 x5 k0 @$ A
set-plot-x-range 0 xmax

# k+ k8 U+ {# U7 t0 I
3 y8 v. n3 N( ]3 }$ O+ D+ d" mset-plot-y-range 0.0 ymax
# }, I5 L! X1 K2 {6 o! N$ {
end7 Z8 A+ D; `4 k/ T& U3 z' a/ o

6 o+ D/ w# `' N* Y+ S+ Y8 T( _, T% dto do-plots
  g6 e9 @! P- }. {: R; ]& }0 H, yset-current-plot "Trends-of-Local-reputation"
6 R6 q' v4 c6 p& r% D3 J1 Fset-current-plot-pen "Honest service"
' T% `: B& `, d8 `# ]6 R$ [1 Aend2 v2 a4 [) c+ [" C6 q/ P0 e) x

$ {; A" d: F! L+ {% N' C( q" j) Q. l[ 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.9 @6 t4 `# m) ^. A. e0 Q
2 T5 ~4 T3 L; y1 c" ^
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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