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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:9 s6 Z- Z! N* S; c, x
to do-business 8 ]& p$ T. h; u0 E9 n' _3 k1 {
rt random 360( {2 ^$ J1 C% T& U" ~# Z
fd 1  T$ ^8 E1 K# h- H3 ?7 c  ~) h+ w
ifelse(other turtles-here != nobody)[
: N& }! H$ L& x6 l0 J8 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.
- I4 z( ~/ t6 ]+ e+ T7 ^( t4 s   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
" z; q$ }9 f. A7 N8 h. w7 H. b+ R! r   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer' \' y" M+ ^6 |
   set [trade-record-one-len] of self length [trade-record-one] of self6 h  |, T0 D& t% U8 L$ T( K
   set trade-record-current( list (timer) (random money-upper-limit))
. o7 N. `" Z: v4 ?. u8 n
8 a1 E# ]0 U9 e# L$ A' ~: x% N问题的提示如下:( F: j4 U& `$ P: ~  y1 S3 l9 v; X

7 |1 V8 Y6 ]0 d$ }% V2 e6 merror while turtle 50 running OF in procedure DO-BUSINESS! f: `% x3 H+ n
  called by procedure GO; i' i8 e* B$ w5 W( \2 k
OF expected input to be a turtle agentset or turtle but got NOBODY instead./ t3 k9 n3 m+ Z" U, P
(halted running of go): [: V( A% {  o& B; @
9 I$ k4 ?+ P: i& O; Z
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~~
+ I6 Q& F/ T1 z! k4 q+ D) e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% r& E2 t* T$ W, a+ Y
globals[
# W4 P% b; y! ~6 Z9 k: }8 J- nxmax3 `1 \7 H4 }3 g8 A/ n
ymax
. P( |7 c6 J$ a8 n6 @global-reputation-list
2 |  I4 ]6 F" z( c4 e! b2 N8 c: ]: Z8 c) t( V
;;
每一个turtle的全局声誉都存在此LIST
6 d1 U( E( ]1 Q# [# u) fcredibility-list
  k: _$ v/ M' {8 l( T5 K" c: M;;
每一个turtle的评价可信度
" Q$ F9 T. Z' H( r9 N  u: fhonest-service, F+ W; d% {6 t9 ]7 K
unhonest-service
* y) ^9 R6 G: h8 D" U# X- y3 l) Woscillation
) F7 }* z1 O# ?; Zrand-dynamic
( I8 x3 j* }: v5 D7 C1 L3 Y]; q9 {" i- Y) l

  @& Y8 k7 y6 R9 Lturtles-own[
+ q3 Q8 d: x% [8 q% s# `trade-record-all# R  o) I$ D$ A. O# A: V# L
;;a list of lists,
trade-record-one组成
& r9 C3 A) k9 Jtrade-record-one! R' w7 f! |1 \- ^) \6 I6 f
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录2 Q' t9 V1 V" D% e% R
/ R1 q; L# m# n% F7 S$ B2 J
;;[
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]]& s0 }% ]0 l# _: p2 `3 E% W5 ?
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]
5 L% q# P8 P5 |- n8 p" j$ Ecredibility-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list1 z  }' Y; W3 E: g' B( E
neighbor-total6 g5 ^7 c1 T  n  j3 y: r  d$ |
;;
记录该turtle的邻居节点的数目( y9 J$ X; |$ ?- @1 R& b
trade-time
+ V8 S/ z2 N/ O$ o, {" ]. s1 A;;
当前发生交易的turtle的交易时间, {! v$ v. X# U; `$ [1 w
appraise-give
/ e6 Z0 f" \# v0 |- U1 H3 A. [;;
当前发生交易时给出的评价9 i! s2 Y& N1 D; k
appraise-receive
2 l7 [6 P$ x' U( b6 E0 R- L3 R) U% A4 q) s;;
当前发生交易时收到的评价
  A' m) w  T8 ]- L. O5 ~3 Tappraise-time
8 ^& x( x& L) @' f1 f4 c6 g9 R;;
当前发生交易时的评价时间  ?' T$ k+ Q. p" Y
local-reputation-now;;此次交易后相对于对方turtle的局部声誉2 E; k3 _. e6 o9 v6 `
trade-times-total
; ?) t- }1 F# Z! K. c( u, T;;
与当前turtle的交易总次数
1 |+ C) R) Q" g$ Ttrade-money-total
5 b* u( d; t# p4 t0 i$ u9 Q8 p;;
与当前turtle的交易总金额
6 S! y; y# D+ Y. V+ [( vlocal-reputation! \* P: n) g6 u+ K* l
global-reputation
- i/ w% u# \( |, A+ h4 vcredibility
! e" f7 ~- d9 v# k6 M;;
评价可信度,每次交易后都需要更新0 L* }; q. O: H7 P; x1 y
credibility-all4 _) Q) @$ \5 k# D( m! L
;;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2 l, \( U5 l1 K% m! j8 q
. ]- j2 P! c) Q
;;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
* `; c- y( l: kcredibility-one
8 ?) t) V" t( _  j;;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
: c6 ]' T6 M3 E% x2 ^global-proportion8 ?6 H3 x, }- {4 |" k, p7 i+ {
customer
8 [" v+ v. \& t- s) C- P; @( \0 Icustomer-no
7 G1 q' K) r* H7 V' c- L1 Etrust-ok
) I5 D8 O" B) o' j2 j7 Q! |' g- ?trade-record-one-len;;trade-record-one的长度) ^0 @# ^2 W! w5 F4 ^4 L
]: i# u8 X8 B1 b* o( h

& j  j9 q0 y* P$ I4 O: a, t;;setup procedure
* Y3 m% d% c) R; I1 U4 e+ S. g* n' f( {3 K
to setup
  u2 X1 c7 K' B8 }9 d; d' R( c7 M4 q: Q8 q) E: o
ca

; M1 j" ~$ y7 {3 s7 `
' U8 {8 v4 Y" pinitialize-settings

7 {1 A- E% e- N
, |3 l4 _$ U( q: m  B7 scrt people [setup-turtles]

' y: u& h; t% d8 i
/ y1 C* i4 ~0 J. Q4 m) {: Ureset-timer
7 @3 F$ d) O8 A6 G9 \3 Z
* G* V5 Z6 f# K+ W1 J5 P6 O
poll-class

0 e7 n) d6 g% x2 I1 x7 W
( V/ R: y; g8 a" s, T# J1 Tsetup-plots

) H2 Z4 Y& v4 m7 i8 j, @8 ]# d! B7 B% [
do-plots
6 V! y9 `. t' ?7 H
end
! B9 b9 n8 Y' E
! [7 T5 C6 d1 O$ w4 V, X& Z' n1 k! Vto initialize-settings
3 Z  X  r8 @3 o% v( r5 z$ M% G1 d  v
set global-reputation-list []

3 [2 F* n$ h% {6 ^5 U6 V. i
4 G( ?  O2 M) {6 g% Eset credibility-list n-values people [0.5]
/ f( r0 c" W& a

7 @/ [* F* c, T7 N& Cset honest-service 0
1 w- j1 U& }+ Y! |; X
( q! e: m% [9 |# i5 Y4 \0 K) g
set unhonest-service 0

$ {' t' @/ F, J) e( h2 [- S& E/ d" Y% v2 J- K% S2 e, F! |
set oscillation 0

2 e1 F6 i* v7 p( D7 y
& T  v+ X4 w/ E) C% Rset rand-dynamic 0

4 w! Y8 s+ a4 E% c8 W( f' h) Kend
1 u3 d5 k, p/ b2 M) j  p/ R/ B6 K& [
to setup-turtles   p/ H$ L3 J5 q
set shape "person"
7 Y& w, r) N; ]setxy random-xcor random-ycor0 v* ]; q8 _0 q0 S- c2 o
set trade-record-one []1 X" t, c  Y# }: s. |( q

: s+ J3 }7 H5 u4 N" h9 Pset trade-record-all n-values people [(list (? + 1) 0 0)] , P2 p; K* s9 T9 k) C

/ m8 ~: G) S$ s: jset trade-record-current []1 B9 \' A; j5 I1 F
set credibility-receive []3 M+ G& }! |; L8 m! O  W; P: T
set local-reputation 0.5$ U$ w# W" G2 \) _) @+ n# _9 g
set neighbor-total 01 ]- L* J) H/ d* W3 p2 S
set trade-times-total 04 W4 S" w6 j9 ~1 {8 B
set trade-money-total 07 f& j" Y5 f0 N& y. _& P& H; A
set customer nobody* \# X$ B. x; C4 U2 o0 F2 u
set credibility-all n-values people [creat-credibility]% T( w4 a/ b% _  k5 c
set credibility n-values people [-1]$ y: n, Y0 ~5 _& t
get-color
4 }( u2 n6 ^8 b+ t7 ~
6 L) u2 }# q6 G9 A# |7 q4 [
end
9 G. x6 t* S4 v# z/ O' i
+ ]" w. n- M! u( k3 V! Q. n' Z  vto-report creat-credibility% y6 @3 @5 l( C1 V4 |$ n
report n-values people [0.5]3 ^2 C( T0 ?8 n4 Q" Q
end: ~) A4 |7 p4 K1 m0 ^( [

8 P1 |* J$ t3 ]4 Z$ vto setup-plots; \2 I; o3 i! |, J

' P0 \7 ?/ ]. t0 ?set xmax 30
6 G% m2 }: M: b8 v: z

" e  U  }+ L! O1 c) z& e* Iset ymax 1.0

& Q' A; M; D( Y9 _- F1 q: o
3 b; K' r3 q' O: v- Xclear-all-plots
8 i$ Y; }) q9 r/ }1 F% [+ K
; @& d; E& i6 R9 s
setup-plot1

  \. Q6 h4 j. u: b- ^+ b0 n, n
& f5 k0 [0 R$ l4 n2 esetup-plot2
- [  D) I" {; I3 |& F$ Y

2 w4 ]4 U7 m5 P' L7 L2 h5 U! Dsetup-plot3
4 i5 I4 c% n8 o0 p8 K6 T
end
+ C' L! }( f: n- M, u& s# q( ^# P& ~# h6 Q( s. ~
;;run time procedures
) j) R9 Q) ^7 `' \; `" D* B
) _- X: N' t/ M9 M" pto go
, T# F1 w* O  m/ Y  F7 I" c
5 ]# z. U7 B$ u- ]3 |3 y' Bask turtles [do-business]

6 o( _! m' Z' pend
! z) v" `! I0 M4 n. L: {+ ~
) ?% s3 _. m0 c; L' d  c/ |0 fto do-business
! U7 N4 v( z  Q0 @9 G( I
, |) w7 n4 W) ~9 `" M; I( ~
, n/ ]( r% N# f- o1 l) ?
rt random 360
6 h/ ?; p" k& s# w+ s! p; ]

8 ?1 q( s# G# E# @fd 1

1 Y1 p, Z& K# W& h1 ]/ y) z
. [5 W; f# J2 Q7 ]! b" G1 b: o) y) a% s4 Aifelse(other turtles-here != nobody)[
6 U, D( @- B! A: k4 V0 u: W. \
/ |6 R& J% v& ?0 |
set customer one-of other turtles-here

6 Y- J' i) _. U0 n5 c# W: s# W
) l8 D1 S# o; l, V& E1 t1 t;; set [customer] of customer myself
% }( X$ J- a4 y+ D

* k% L8 u, |' b$ @set [trade-record-one] of self item (([who] of customer) - 1)
! G& [$ U8 N/ a9 s6 N9 S[trade-record-all]of self/ S+ ]  E" Z  s+ `; q8 X
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
9 a8 U/ g# U8 n  d7 `0 Y
0 \: k, S( L+ w+ i6 J: n" C9 |
set [trade-record-one] of customer item (([who] of self) - 1): e" \" B) m+ r0 i2 }8 G. W
[trade-record-all]of customer

* F; R& y( X" Y% a; Y  N; i# X4 V0 K* [
set [trade-record-one-len] of self length [trade-record-one] of self
6 D1 R- s: ]; P1 c1 G
% ^) J9 \7 W" T; }" P+ {- G& k
set trade-record-current( list (timer) (random money-upper-limit))

. V! g( p0 E  r$ E0 y$ i
! ]& p3 V6 z  kask self [do-trust]& h# [: D/ c# L+ V4 `4 V
;;
先求ij的信任度8 S: H3 r- U1 ]9 ~5 r- B

+ p: [/ i2 x: _# Kif ([trust-ok] of self): {- f. j9 a  e* [! a1 K" P
;;
根据ij的信任度来决定是否与j进行交易[: B* W/ Y8 A! a
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
$ o. C* ^& z7 D, [4 M3 m9 J/ |" O- @0 R+ R
[
; m$ [3 h0 x8 b6 r( o
* k! i+ [; @* A; n2 Y
do-trade
& N3 V6 {# I8 a  y! n

/ t* i( R+ H- \! f$ X" p4 P# N) ^update-credibility-ijl

, S8 g; n! i5 ]8 f
* P( ]% N4 O& ~& eupdate-credibility-list
6 N/ X% C/ u" D3 |+ [$ ^
3 J2 @3 U4 \" G: p
$ R# P* \  g( P3 s: `
update-global-reputation-list
2 o0 C9 h1 c# n

$ f3 U0 M2 j5 g, ]* d2 dpoll-class

. C" Z3 L+ E9 z8 U/ c. v7 y2 s8 W4 z  c) p* V3 n
get-color

* i: z( z  u7 y- f# x3 [
8 b) @# y' \/ W]]
( J; c  S2 N  z/ p  R& [0 A1 ]. j  b( c3 f
;;
如果所得的信任度满足条件,则进行交易% ?# l* Y+ B$ j5 }& A) x+ A
' l8 d4 k8 E& C* s
[
3 z8 H6 t* W' ]% S$ V% g" ^
& @& f" X$ ]  P5 y
rt random 360
9 I3 ?1 p. R" ]2 ~5 n

7 I1 ^* f. |$ D8 f9 \% F8 ufd 1

0 Q# I2 S$ g( z1 ^1 X. Z1 W9 A0 i4 K3 x% G1 `) Y2 @
]
  p9 P  F9 {* M$ d% g7 g" A+ _- Q

! S  K5 s! e' S3 W% qend

9 N% C! {; s1 c/ o9 P6 J- A/ h$ M4 n, |9 L7 g3 N3 `
to do-trust
, M# f2 v# N9 B( fset trust-ok False5 M' t" |5 B1 {! c8 l9 }4 B

- i  k  r! V5 q0 n; u- k

$ {% e  w; J" \, alet max-trade-times 05 P% ^# h/ \2 k# m% z1 Y! K9 _  W& ^
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
! z, |0 ?+ w! r: O: {- dlet max-trade-money 0$ x$ o% T' v; M7 d; a* @
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]9 c  z8 O0 U! y; u; J. i- b3 J2 i
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
% v8 E  B  T- b4 p1 m! o3 y3 A8 Q9 ]& L) Q1 k  e9 i3 q

9 |) y3 I9 p- A  m: M% Zget-global-proportion
  v! c# @# `! p+ N* Klet trust-value
7 s7 I: w* J7 _- u' Ulocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
' N2 h/ g3 t: F& F4 t" @' B- f
if(trust-value > trade-trust-value)
3 G: U. r$ R* _[set trust-ok true]1 D% p9 C+ E4 l9 H8 J
end
4 q! ?; r; n9 u, K5 D, P  }% }) V0 d: p
to get-global-proportion0 i: ~- L5 N* z* u- {( a
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3): ?1 q& i$ ?" Q7 r! @, M6 v
[set global-proportion 0]
4 X2 L- }. w, P[let i 0
3 E* S5 |' y4 a1 Llet sum-money 08 j, p! E6 A( b9 z% @3 L
while[ i < people]
* S; b4 D  [3 u5 _4 ~[
- @6 n# ]- @# eif( length (item i! j2 B* f" \- V9 m
[trade-record-all] of customer) > 3 )
( D& j! k% O+ Q8 \# L4 @
[( N: r5 I. W- q: j, D! f
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
! f; C: w& f( k9 K- X]
4 l# `6 M6 b( M/ c: j]
( z8 d" J- ]' y. P6 qlet j 0/ w$ s& j! c" p
let note 0, N) `& x7 Z. R2 Z' F
while[ j < people]* D6 y( b3 w9 L& g  w7 i( V
[# K6 Z' k7 S! ~# o- D9 ~' v
if( length (item i
( v/ a$ ~$ z& ^& x[trade-record-all] of customer) > 3 )

7 q  [# M# i5 y1 c8 q[5 M6 g% {  L5 Z- W/ K& r$ i
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)5 n. s' [3 d) m* P9 U0 s, T8 ]
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]0 K. y" `5 B% p0 t5 r$ v, l$ g! f7 V
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]& R" t  \! I. |4 {) H( M; V
]
3 o6 B$ z7 g. [( r! @* B]
+ A, |2 P/ z. x6 x1 q, ?9 \set global-proportion note( p  j/ N  \, }3 H, H
]
( W2 C: f0 {# t. nend
8 [' p3 ]3 D5 @1 b* }( B, \: A3 o. o% r+ O$ Z
to do-trade
7 ?7 {2 {0 X' r6 _3 v2 n+ t3 ?; O;;
这个过程实际上是给双方作出评价的过程1 o8 f1 |5 i  l: b1 W! X# P& k
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价+ _/ L; o' ^3 j/ v
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
% c; @+ ]4 i0 [. {set trade-record-current lput(timer) trade-record-current0 K$ V/ j  }! \
;;
评价时间
; ?# [; J- A, l$ F7 A8 S0 m3 hask myself [3 e8 O- U* J7 }2 B5 q3 y
update-local-reputation
4 c$ p, o4 K: i/ }set trade-record-current lput([local-reputation] of myself) trade-record-current
) Z0 q8 o, |& j+ N1 m8 I8 }]
7 i/ Z4 ~- L1 pset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
  J7 `- j' v" _. A6 p; z# k) G;;
将此次交易的记录加入到trade-record-one% x5 n% Y& Y' D( [( P6 d/ Z
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)  y) |' s2 v6 n& C+ G% R
let note (item 2 trade-record-current )
6 z! w+ m2 V+ r  s# O$ k' Lset trade-record-current. Q3 h0 D& O9 e
(replace-item 2 trade-record-current (item 3 trade-record-current))

0 ^) E4 V7 C: r! y, `7 O2 Pset trade-record-current- ]3 W5 |. A7 `
(replace-item 3 trade-record-current note)
7 z1 ]/ C* t9 w# K& P3 V
8 k, R5 w: }0 N% N# A! Y

5 A! P/ l  c! |1 wask customer [
# P) |/ ^4 t5 F8 a" Bupdate-local-reputation
& h, N0 Q9 m! |: A7 c5 Mset trade-record-current1 \: v4 `4 V& S1 n; n  o% {
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

( {$ ^7 \. O% k+ b! S4 j]
& Q8 _- w9 o  t7 H7 L" n7 T+ g( O. Y" I9 W

8 m% `, `6 r% y( zset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer7 V  O  |. r9 V' S3 _% v

: f, ?& L; G( k) q3 d( n! Bset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer)); ]; z4 x  z5 y5 e+ u* E
;;
将此次交易的记录加入到customertrade-record-all+ T. X) O2 H& w( e5 g- s; ]
end
; a4 I8 r% B' Q* I2 D! X$ v7 b6 @& u4 L( U) X8 `
to update-local-reputation
) {' `3 |5 W, @$ `; W& a3 i: t* _set [trade-record-one-len] of myself length [trade-record-one] of myself  v) p3 |6 U* u3 f' ~
/ K4 q- `( q4 G( K  T4 V3 ?

1 g" z9 j1 E$ \5 T- [;;if [trade-record-one-len] of myself > 3

; z4 `2 R8 e- y% M9 ^1 N$ Hupdate-neighbor-total! }+ _! z3 z. j) X: k0 m2 s
;;
更新邻居节点的数目,在此进行
; p5 D  `: Q/ ?4 Slet i 3' X9 ~3 V) C) i3 r& J6 n: U
let sum-time 0; B: c; C2 f; j/ v3 w$ Q
while[i < [trade-record-one-len] of myself]
+ u" W6 e9 X" ~$ [/ ]3 y[) `1 o1 W; |" Z) h% C
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )8 Y7 \5 @6 j  i6 H
set i6 j9 @1 s1 ~3 Z6 G- |! T# o
( i + 1)

5 ~, B. Y7 e' \: f; {$ i/ |' H7 e" x- g], E3 L, E4 L( E! @3 H1 h3 V; i
let j 31 r, x' A3 h0 ?4 u4 m( U/ r
let sum-money 0$ X, [2 y9 c! T
while[j < [trade-record-one-len] of myself]
5 u: V% C" Z2 c4 }+ X  o5 m[  L8 q+ R5 [+ ]$ C
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)+ W# _* O- V% {( ^- `: O; i
set j" \6 `! k3 z2 v$ Z. H, d
( j + 1)
0 i1 e, K4 ~9 w, U* K4 n4 m3 y
]
$ o# c: E3 @, m2 r% |; Y! D2 Llet k 3
* p' x% c5 M$ q2 w9 d3 ]let power 0
9 v) Q7 M' V# O" u. Olet local 0
$ c- l6 u+ i  q9 n2 N$ vwhile [k <[trade-record-one-len] of myself]
- B1 i  N2 s1 r. ~4 w[3 t$ L5 s; U7 [2 r. W& e( c
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) , h1 f/ q1 c5 n0 l6 S
set k (k + 1)# E5 s% I2 O, L# Y
]
) i4 k% `1 p* @% {set [local-reputation] of myself (local)
' I6 X3 G% k4 q5 r2 W  cend6 i2 S; ?1 t: U

0 S3 _4 Y6 N6 U) s: Q9 [3 i! Cto update-neighbor-total. X6 T/ q6 f9 I7 S! ~; o
1 K) _, W- |: |, H
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
1 s% ^/ Y- f8 p7 C) |# |
% d! h% B1 Q8 H0 K1 v& G+ F

0 O% e. L; n: W! jend2 o4 {8 g$ e+ ~5 M4 H- J
1 T, D( F2 |+ \/ \4 j4 V
to update-credibility-ijl ) G4 ~7 ~% i* g5 o% i. E: A( A

! j$ a2 `6 j, v6 f( q% G;;
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。! ]* a* W6 ]4 S( q! \( H! O
let l 0
- K- S3 @: S3 R' I" k1 twhile[ l < people ]7 p+ [1 }- T+ |& l
;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价
( u" n" Q" |# G7 E' \) ~[
8 e/ _9 ]7 p1 L- i* e3 ]" |let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
" f! ^2 r1 ^4 j0 D, Q* u" Pif (trade-record-one-j-l-len > 3)
' b5 l6 N: i0 X7 `[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
0 M  y2 c, H% olet i 3
* p0 V; V# x2 \3 Y' O' [let sum-time 0
, `" k3 Q5 E- ?- n, N7 zwhile[i < trade-record-one-len]; p! ^7 W& r) T
[
2 c9 P4 n3 m7 S1 R  o8 |7 eset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
7 L4 q1 Z. |/ u4 ?; ?' `3 A- kset i
7 a" {8 b1 @" l5 C6 v" `( i + 1)
  \3 n5 _! g: [- `! O
]
+ T% f! t) a' h3 Q) @let credibility-i-j-l 03 |$ \9 z% P" `& }! C% ~
;;i
评价(jjl的评价)- K* Q: l- k% M( z, @
let j 3
4 M. U6 v9 ?9 @% {let k 4( l; @9 A# ]& q: `1 E! S  I( V
while[j < trade-record-one-len]
" Z& F7 {4 t. @[! g! E8 }6 F; c% K9 v0 {3 j
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% x5 a, A2 R0 t. M1 `: O4 T
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)" o: _6 m$ M# y& w) C  `& p9 z, c
set j
0 u2 L4 m5 C8 K( j + 1)
) w: S1 P* B+ I3 C
]
; b8 K/ U/ a# i2 n  w" d1 Hset [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 ))5 v! \; V* A5 g( z0 \) z. Y

' b2 t( |& H0 V# K& y$ G; X

: L& n7 O8 v2 ^- [let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))& v# r1 A4 t3 Z5 i4 x
;;
及时更新il的评价质量的评价
+ M) |; z- s( K3 Rset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
  t, l4 P/ g# a1 R- [& E! ]set l (l + 1)" Z# U. C( S# V2 Z8 V* Y/ Y! O
]2 B8 Q1 O9 ?7 @9 j! X: P: K+ V
end
0 d4 {# `' n0 b( n/ t) l" P1 J* c) C3 J
to update-credibility-list: i/ y9 L# G& H
let i 0
' M" R3 C2 Z7 v( I$ T* cwhile[i < people]
* W: T5 _' x/ t. o3 U7 y8 J[
, y  U+ j4 {9 W' r5 ~" Llet j 04 k2 S% E, ~7 K6 ^  W3 i; s- P
let note 0
* T: P: w  r" Y4 C0 @6 b: Flet k 0* q7 g! e/ H# a* V
;;
计作出过评价的邻居节点的数目
! R  |7 D9 Z3 n7 R' Fwhile[j < people]
& e, ]" n! h8 x# |[% d& t9 M8 v; c0 g4 P
if (item j( [credibility] of turtle (i + 1)) != -1)3 J' [5 O" ]% k* s# ]
;;
判断是否给本turtle的评价质量做出过评价的节点
: @. Y+ H2 n9 \; i, o# i[set note (note + item j ([credibility]of turtle (i + 1)))
- E. ]( F' e8 P' e& g* z) z;;*(exp (-(people - 2)))/(people - 2))]

9 R! p. ?$ J7 j0 T3 D$ J7 y1 Q- Zset k (k + 1)
9 N" P# S# p7 @' }) B5 c]: j9 U- t; i4 \- B" D- a
set j (j + 1)
( ^4 h  F+ A/ Z2 T0 r$ B]
) G5 |3 W( e1 K1 b* R: Oset note (note *(exp (- (1 / k)))/ k)
  I' M* v4 A. r( z9 ]$ S- x* ~: Xset credibility-list (replace-item i credibility-list note)
6 K3 }2 u  g8 M0 [0 L  x9 A. N  _3 Yset i (i + 1)
+ h" m7 @! L7 U- Y]# h2 Z& a1 |* `* b
end$ t5 M$ Q# e4 h; u1 w

% b& I0 e; B( A- y) g; X6 Sto update-global-reputation-list  O) }0 g4 D  K" @. q8 b5 C, x" b
let j 0
/ Y9 m3 [6 ?; k  i. x- |" Qwhile[j < people]$ M' Z5 ~! D# z# D
[
' h4 r' z( ^+ l( {$ glet new 0
6 `  K1 o: s% _* T8 W: Z;;
暂存新的一个全局声誉
* o5 i2 e; ]7 V- c  Rlet i 0) r  C8 u4 l9 W# }
let sum-money 0
2 }/ j3 @1 y, |' Z; B% F' elet credibility-money 0
  S9 D' s. }# Q+ S: mwhile [i < people]6 i( {0 i3 {+ M* R
[5 M& Y) t7 O- i8 V5 i* N
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))  |, i8 J, z- j! Y$ r0 b: w
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
! O0 x) t: R% P- v4 `set i (i + 1). u  n3 l$ _- w& G3 s& j, m9 j
]# V0 q: b5 X4 r: h
let k 0
; n* X9 ]1 s) N5 e3 {let new1 0' ?8 Z! g9 q4 M4 }, \4 ?4 `
while [k < people]
/ M( F- o/ K$ E' m* o[
( q) R& p; a$ eset 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)6 w# r! z+ q* N+ Y5 U8 p
set k (k + 1)* z* K8 L) J3 a7 X5 l0 N
]
' `  J; S- ?' L6 r: e/ A4 W6 b- ^set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) & }2 S; ^+ R( m7 X' c! f( J
set global-reputation-list (replace-item j global-reputation-list new)0 D+ N" `/ T5 d  w
set j (j + 1)8 P9 {; ?: `& d! C+ h6 W  K2 L
]- `- Y* X4 T# L
end
/ V1 L+ Z: J) b' m  h$ ^& o' d9 H- d# K  p# r
+ {' _/ I* y' K/ I7 q
' }( q4 I, y! T
to get-color
1 F3 C8 G+ ?  J* k5 F8 x8 R8 c) S6 S6 K9 E  Y
set color blue
% h5 h& W1 O4 L- z
end
, F9 s$ |$ T. j, E
: m6 R5 N  X" h4 zto poll-class7 @) ~! S5 f5 O+ Q9 _
end5 e- h. C/ v: F
+ Z2 F. @. e1 U/ e
to setup-plot1
; A& n$ ^: W' n% c
6 r5 r/ }) |: r1 [/ tset-current-plot "Trends-of-Local-reputation"
) f4 j: Y+ @; d1 \

0 n! i5 x3 D9 [set-plot-x-range 0 xmax
% N% v0 {8 j$ _& P; C- ]# |( ~
3 i( g9 y+ }4 O% h3 A" J8 |
set-plot-y-range 0.0 ymax
. K3 \$ }9 P8 G/ h; X' Y
end6 W6 a* f, @, Q- d. e- g' W, `

4 @' p4 X! F3 ato setup-plot2
' {& H4 @4 @# }; A! M) M% R/ H3 R8 f- s
set-current-plot "Trends-of-global-reputation"
5 a2 s; g( {" ?: N+ l

* h: Y7 x( C9 ^" }* [9 Bset-plot-x-range 0 xmax
* {- U9 U$ s$ g" ?

3 e( l# v/ b5 q- d1 g6 ~: v5 Hset-plot-y-range 0.0 ymax
" h4 m7 j% W- r( ]" E4 X
end) o& p! J& s1 T* S/ n- b. T

6 m3 l# a+ w0 Y+ Zto setup-plot3
; n* b1 b8 L0 m2 K
8 o# }, i: E* B# t( L3 aset-current-plot "Trends-of-credibility"
& Z4 A) o5 u) [: o+ e

% Q* H8 k' I# f, S  Y0 m- Uset-plot-x-range 0 xmax

1 D0 w% F: _# U9 S, t% A& l
1 m" Z1 y$ M+ O7 Iset-plot-y-range 0.0 ymax
# o0 \' [, ~( X
end
' c: C3 ^1 Z9 @9 p9 e8 W+ m) m! {
4 f4 P9 W4 ~- A7 u. T* E! h9 Xto do-plots
" g) ~7 s. C1 M* k8 ^set-current-plot "Trends-of-Local-reputation"9 d  ?# M  o) y8 Z; c; V- Z
set-current-plot-pen "Honest service"
9 H/ X8 R- t4 e) oend5 W+ p& U* P3 M3 g
; d% D- J( N$ B0 E( V' K
[ 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.( H( y* [! v, {

5 k2 R8 A7 o# @/ n1 Z, V4 Q2 V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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