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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:
. U( f9 w. q( xto do-business
4 Y) J8 e) ?& J$ B! g rt random 360
2 F5 P' k/ G& A8 l fd 1! p& Z/ v! U4 K0 P) ?3 a) X6 v1 ]
ifelse(other turtles-here != nobody)[. L7 T% T) t  G
   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.
* t9 I9 U- g6 _; w9 q: u! |) u+ t2 y   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
$ I9 D5 Z2 ^2 ~. Q* t  g   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer4 [7 w: n6 f, @' x
   set [trade-record-one-len] of self length [trade-record-one] of self
, ^2 T3 R0 |- n/ [   set trade-record-current( list (timer) (random money-upper-limit))
. q, f( d3 `7 F, N  L
1 p6 {0 W0 K# N7 ^问题的提示如下:
0 N3 x, L. e; m, a9 @+ t% J! N/ L' B2 @" j
error while turtle 50 running OF in procedure DO-BUSINESS( d+ k7 W/ f8 [
  called by procedure GO
* Y% s; `- x/ q* ?OF expected input to be a turtle agentset or turtle but got NOBODY instead." O$ |( c7 N, u3 P8 p6 L: H" i
(halted running of go)% O2 d8 \' p9 W8 b5 ~" v7 s8 f5 B

: S- r" I  H8 H+ |0 j* S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~~
8 O/ k! T, B! ]) B. E  Z. `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
+ W# w0 g/ i5 S% rglobals[% `0 o6 D7 q* \* h: o: s
xmax
! L( [/ w; F4 Y4 G4 `( ?) r$ j, uymax
2 p/ }0 T; G, s, U' R! gglobal-reputation-list$ A$ l: x( h/ ]& U
' w& C5 K/ y  E& E
;;
每一个turtle的全局声誉都存在此LIST
$ K+ f1 ]( L" m" E! T- I: h' ccredibility-list3 E6 {! S; h1 x: f
;;
每一个turtle的评价可信度# ]$ J' F# y+ }9 f' G: F
honest-service
: r/ ?2 y* C( L0 r. \+ E( Gunhonest-service
1 J7 I: x& M3 V; B; k! [oscillation2 |1 T; I$ }* ?
rand-dynamic8 r# |: n* F( `! e8 g4 f, f
]
3 W! K. q8 N6 v* @; S! G; U/ L8 }9 c9 r
turtles-own[
( S( l" [# n$ v6 [) N3 wtrade-record-all
- |- s# \& q) z$ G! \. Z;;a list of lists,
trade-record-one组成8 s0 o1 p& k7 x, w, T
trade-record-one- u) }2 r  z+ N4 g* o' W
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录5 u2 S) y( f5 V% N3 h9 }, f

; b! v* K4 u1 J( y, g* |$ I* r% J! L& C;;[
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]]
! f) T( g1 f0 U  ?2 E0 }0 B" h6 Dtrade-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]/ F' q' h4 p$ M" g
credibility-receive ;;list,他每个turtle还需要有一个存储其他turtle对其评价质量进行评价的list' y0 Q7 a1 O4 I, Y1 i0 R* Q" l5 g
neighbor-total
! @+ k, |9 X% C$ p. G;;
记录该turtle的邻居节点的数目% S; |2 }8 _0 d
trade-time
/ G) w; `3 j5 u( q) J6 K8 s;;
当前发生交易的turtle的交易时间
0 @( g# o9 z+ N4 v; g1 l& O# }1 |appraise-give2 |8 D- `% C( s& h% i
;;
当前发生交易时给出的评价
' X+ c/ j6 U3 W7 E) Dappraise-receive
+ U- d% v  E0 {+ S+ y" N- Z  D;;
当前发生交易时收到的评价; L: R, V6 Y" C. j
appraise-time- U) i+ D( y4 q- v! |9 Z
;;
当前发生交易时的评价时间
9 o  `0 G  ?. S# `) Q4 ?' o1 g: L- Hlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉& u0 [) F" j8 g) l* t6 F2 E
trade-times-total: P/ \  U: F0 X9 U. \7 a
;;
与当前turtle的交易总次数; @' q( w5 H- _7 J) W! z# {1 N
trade-money-total& G+ M. X  l& g% W! N1 ?; L
;;
与当前turtle的交易总金额6 t, I- }2 P6 X0 `
local-reputation0 G- J+ r  f& a5 }# ~
global-reputation
8 H$ f2 r7 V1 G! Mcredibility' c7 ]2 u7 ?' }+ R9 Z9 Q
;;
评价可信度,每次交易后都需要更新
! Q! l; w, z) q1 \# _4 V0 u9 y2 ycredibility-all
1 ]" D/ `" B/ H5 n9 v# C- s* r- T;;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
* A9 L, L# e( u$ q2 [7 m! J) F$ I. g; E, l: I: p. [* y
;;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* A4 a) c1 x5 j- `$ S- D+ {- V; T: W
credibility-one5 d, v9 C% q' ^- d: m9 W4 ^
;;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/ U1 O8 f9 l& L0 l) D! h$ c
global-proportion
- F5 [: }/ d! g3 S. `customer7 Q7 t' T  C% t6 K
customer-no( j) x5 q1 q8 @; I* g
trust-ok
& u) a# t' e6 p/ e6 {, Ctrade-record-one-len;;trade-record-one的长度
% W2 V4 i( s" M" N9 i2 R0 }) a) m]. S) {5 t! _* n* n2 J
/ c6 H" {6 J8 v/ Q& Q, d
;;setup procedure7 ^0 |; d+ u' M' b1 @+ ?5 C; \

( f$ z1 D  T: A2 ^) a1 cto setup
6 I- C) F4 z  P+ N- d5 a. m+ N5 R+ s6 {! E' z* b1 J
ca
, z/ P% R8 u' s1 M6 i
6 ]5 B# }& m6 J" `4 ?
initialize-settings

; Y* a4 y) Z" [4 J! i( t, Y
+ B3 ]7 G, F* h! A" u6 j3 icrt people [setup-turtles]
' c4 h* B/ s( x

3 J. L! n5 D/ i6 Greset-timer
2 K9 p" ^  j  K! t% ~6 F
) W* J4 i0 l% y2 e3 X) a4 K
poll-class

- V( a* ]8 D' [6 ~
) Y- ~0 B$ I* }% P  m% H% C& Gsetup-plots

8 h/ [. i4 W- A1 s; ]& e; p( v, v- r4 Y& t, v
do-plots
$ X! `8 Y0 k7 s$ T& M6 H5 \
end  ~) y! f5 |1 i0 O8 T
0 G( u' m) U- y; W( a  N( K
to initialize-settings
( b7 f4 }9 V6 I6 `1 F# y
8 Q; t( O4 e9 ~& Uset global-reputation-list []

% c' B; S, U  _: S; p9 {: h" Y2 L' J, z3 o; ^) B( k; x
set credibility-list n-values people [0.5]
0 I0 s3 Z" _8 S; Z0 Q: q9 P) I1 {* d8 e

3 c) F  w1 G& ?* [set honest-service 0
! \; _8 G7 \0 E6 ]- @* W

  a: ?& h) R. v+ X- x% j6 }set unhonest-service 0

* `0 {6 `. l3 I5 ~3 ]9 r
% m0 c: k2 \+ m: R4 O1 C# Vset oscillation 0
8 E1 H! X) W  X9 W0 p9 g/ `' R5 q

! M- t# W# n7 B" l0 P3 U! y. W0 |set rand-dynamic 0

+ O3 P8 l# _; wend
1 w6 B, i1 E. K$ b( a/ ~1 h' j; O7 V# x2 @  e
to setup-turtles 5 l, `" {! T- V2 L
set shape "person", m# h! k5 w, O
setxy random-xcor random-ycor
! T8 f# W& y  d/ Dset trade-record-one []+ P4 ^5 T- V% S" K7 T5 W+ F

$ r$ s* R2 x. Lset trade-record-all n-values people [(list (? + 1) 0 0)]
5 n& N; ?  D- j( u

# _+ l( `' m  N; C/ N+ V( I1 }set trade-record-current []. [! e- K3 A3 O# {( J7 ~0 u
set credibility-receive []; f3 j! @2 j  z% o7 I
set local-reputation 0.5
& q4 `9 r1 N/ z& fset neighbor-total 00 ^; E; ?/ x; S
set trade-times-total 0% V8 j: E6 a% o
set trade-money-total 0/ t2 p# E: @% u: r
set customer nobody
; C; Z8 P2 r6 k3 c" Cset credibility-all n-values people [creat-credibility]
- A3 c7 w6 M, B8 Tset credibility n-values people [-1]* z# e/ I- Z' f/ _8 \7 r
get-color- k4 X! w; _" i5 z4 T7 M

) E+ {: Y: m- o1 |2 ~7 kend
: I2 e- X6 Q+ d! e8 ]; K; B, X6 Y* E; G- c" T1 S
to-report creat-credibility
/ v. c/ I/ x9 r0 vreport n-values people [0.5]
5 j+ V2 K3 M: g& R2 [  m7 Gend
% y" Z! q, Z' N" J( f; }( o* e& h4 x) V$ h8 r* x
to setup-plots$ v( s. {& Z, Y, ^0 ?
; J. U0 o8 m$ c, O) ]* O; ?
set xmax 30

/ v( h9 V# y6 @$ {, z
7 b- D- I# l# I1 s7 H2 X' k$ J+ uset ymax 1.0
' `+ a  Y# J& [

. r5 {. w# i" m+ t0 z0 w- u7 l! Aclear-all-plots
  r% y8 ^1 b$ U5 o4 }. x% w7 O( t

, s+ e) X& p+ O3 i4 P! `2 gsetup-plot1
* x4 {, j) {  i2 r- {$ V- U" m8 }

/ g8 a' S) f. Tsetup-plot2

* k+ |* z& L& x# E
) s  }! e4 Z7 U4 `* i" p  fsetup-plot3
; ^  S, Z: b2 u: a9 j( r0 X
end. s% B; n8 d' |3 Z$ o0 q% u
7 |4 P/ V* P- u
;;run time procedures6 t: f( y3 a. e

* t/ G" G. `5 u9 f# Q( e$ ito go! E' h% N) K8 H; U  U

9 _, \" q: c( B' Gask turtles [do-business]
9 {9 n) b: `" U. _
end
2 S/ W+ g, q; Z
: h8 n3 m! p6 V/ {: Fto do-business
- _+ w; |+ m" [: O

6 }5 g5 H; ~/ g6 L& D% e
0 n* I# S4 o# D5 S3 f& h2 X2 \rt random 360

6 E6 E7 U6 {3 S% ]8 g' O( [
  v' _+ g" r: afd 1

2 ^2 D3 A! R  b7 @( F
5 l, I# f$ _, b: S7 `2 X8 J4 j  Jifelse(other turtles-here != nobody)[

6 \) w) c3 t# q8 e5 W6 W4 w5 j! S$ H0 u* k. _+ o
set customer one-of other turtles-here

, _9 U8 M- h6 f0 M2 Y. h' o" C4 R& z. Z2 G: D5 D# V9 O, {8 f
;; set [customer] of customer myself
: o: s+ w+ x8 h

+ m+ X7 `6 h9 S7 ]5 _set [trade-record-one] of self item (([who] of customer) - 1)2 d8 Q9 T& I' M# w1 W6 I
[trade-record-all]of self
. J1 O; S! I* Y. n- @;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
& D" t3 Q! K$ l5 n

4 l0 [9 L4 N  N% z( J$ G9 x! aset [trade-record-one] of customer item (([who] of self) - 1)8 w; [& x" r1 h5 t* n
[trade-record-all]of customer

" B( f% V' T) W1 \1 a  s+ t7 M) c4 B- l/ j  j- [! X! T+ f( ^
set [trade-record-one-len] of self length [trade-record-one] of self

' h0 J2 K- d4 W, ^% j& u: G! S; k) v
set trade-record-current( list (timer) (random money-upper-limit))

, g: q2 q/ i# u8 q# Q( i8 v2 f( y$ H9 }& G! U9 z0 H
ask self [do-trust]1 y, q0 n! b; _% Y% j  L( q" ?6 U$ t5 H
;;
先求ij的信任度+ l1 u4 r4 R# |0 ^  U

) b3 p# C. x2 [* Qif ([trust-ok] of self)
  e% L0 l8 O% l;;
根据ij的信任度来决定是否与j进行交易[
/ x- _+ l5 Z& x5 F6 |ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself& P8 P$ i# l2 z% i  P, W
7 [' v+ a* h& f5 X( a! p
[

+ O' V/ g' ~5 o/ K6 \6 f2 J
; n" ^) P' |4 A7 b2 hdo-trade
& d4 R1 Q+ n% o3 t$ J& _

7 o5 n; u+ Q3 L3 xupdate-credibility-ijl
3 U4 ~/ o- ~7 T* E% q
8 k5 X4 w5 K& Q" C6 J& _# F
update-credibility-list% `5 s# {- H  c! f
8 {! [& L4 `) {  o% z
# ?: K" B! P) r0 K
update-global-reputation-list
( b6 f) }% N7 L' J; J/ G

- j% n3 }# t$ A1 Bpoll-class
& x2 ?! y6 |* h6 g7 [! R# L
' q: n# @/ K- Z) T( @( E  e
get-color
6 w2 q$ ^& h3 T( X: U

6 `& n( g0 K6 k1 `% E. m]]+ I) M5 y! m) y! U) G) R, l+ z
" `/ f: a1 U2 j
;;
如果所得的信任度满足条件,则进行交易
0 r! i9 Y0 U, Q9 F; |
: p+ h! h2 K5 U0 z. M% t2 M- E[
* @6 g1 E" y3 p

0 B9 n3 K; t, L( g' {; x5 brt random 360

$ v- Y$ Z3 O, q) \, r* L8 w/ W3 P* ^6 i4 _7 I& h
fd 1

3 `8 E9 J( ?* I9 w# {; t- _# y9 ~# O! e( n! L; ?7 ^' q/ E& _, ]* X
]

. d4 e9 {/ J+ Q" w) Q
9 S2 g" k6 G& H2 w3 b% U+ Zend

! G: K, D; ?) [, y
" i. k0 R/ ~, o4 v0 x- h. Pto do-trust
$ S& c% P) Y0 V8 f0 mset trust-ok False
3 L9 g' a% q' I! |8 Q% o
0 A  c; z& b* V8 Z' c

3 H- d0 C9 B# |9 G7 _' z9 ]% wlet max-trade-times 0; C! ~8 ?+ i) f) \' C7 p" J
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]$ d. `  X5 [; w( U
let max-trade-money 0+ c+ v$ V8 b+ `9 i6 [) _/ U
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]; G1 W" L0 y! M' 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))
* G& t4 R* D8 O: V0 q  x
& u, y$ _) O- R% \% q0 B

# }1 M  v; z' E4 [5 U7 H/ tget-global-proportion
+ x& m' h' A# I; z$ u, F( O0 Dlet trust-value
& j% v: N- l# s- Y+ Z6 l7 ylocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

( a/ U3 F  f. I' F9 Z  f9 l! r- [if(trust-value > trade-trust-value)
6 ]6 T7 D! i4 @$ P0 L2 h4 Q4 b[set trust-ok true]
# x5 J+ F$ q) ?; k6 I' yend
6 g6 O* a0 Z& s7 a# [, W- q9 s( b' J7 G, Z* G8 B3 ~8 V  }& Z
to get-global-proportion# U4 W) H- g# O- \$ s
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
+ Z$ Q+ M: K" w- H/ a, _$ L4 _% R0 Z[set global-proportion 0]
$ \- P8 k6 h9 t3 \) c[let i 04 ~5 O& t8 D6 M5 J
let sum-money 0
: h5 s5 d/ w+ Pwhile[ i < people]% W( m. Q) l1 B, L
[
1 F! N2 E' r0 i! ^4 Q+ }' pif( length (item i
& J- M( {3 B# `" ~% W1 {[trade-record-all] of customer) > 3 )

  a+ `1 J% Z$ k$ [" J5 V[7 v! F$ ?" X0 b1 U% _) J
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))" d- x0 l/ f1 ?- C, R
]* U$ e( A+ ?& V
]- o  _& [+ A+ ?" K8 W' n
let j 07 @2 F, s0 U0 H" O& F5 k% N& ?
let note 05 D: a  U# I& N; p( g/ [% f8 y: u+ r
while[ j < people]
5 v' S1 h' ^3 k[
; h% u; ]) Z! T$ f  ^3 \) Vif( length (item i* n. q$ F' ?8 W% I% U8 }
[trade-record-all] of customer) > 3 )
  ~5 u: i5 O: j. A: N" F& }0 \
[9 R5 M5 h3 z& F3 l; E, f0 S. X$ A" J  l/ _
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
0 N: g: ]& }$ Z& ^6 C8 X5 ?[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
7 E- F* k' p, M& o[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]: f0 g5 r! u3 s. b7 s5 F) l
]
4 L0 L8 e; N5 F+ N]+ W: s( m7 o2 m4 n7 `) d5 `8 o
set global-proportion note4 x! D0 F$ V% J6 [: }# O8 |  N. P) c
]% d4 f  m' y$ C& O9 R9 Y
end+ s+ z8 w9 F$ j$ \2 o: u8 Y
5 p9 J% V) N+ w4 v8 c( s4 X* W6 f9 x
to do-trade
& M8 i( |7 E' `# M1 \3 z;;
这个过程实际上是给双方作出评价的过程: n* f+ d  i/ d/ [
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价) y. j* u9 v; [6 A$ U& {& f
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
9 W0 A+ g7 K% E. c1 C7 ~/ Hset trade-record-current lput(timer) trade-record-current
+ m" q, q; ]* D' `8 W2 h;;
评价时间3 E/ A* s- C* ^  `6 Z* J7 h
ask myself [
$ d6 |3 l5 c9 g3 }. Y/ Z1 {update-local-reputation% q4 k. e8 {: h
set trade-record-current lput([local-reputation] of myself) trade-record-current& A5 [/ X0 W# Y
]) f2 B& t. H2 k; w9 m1 G) K6 g
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself: T- c( ~( s. ?- b: H& U
;;
将此次交易的记录加入到trade-record-one
3 Y$ Z. M) S* Qset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
' l& D6 w1 z2 Dlet note (item 2 trade-record-current )% d$ f: a( [) p2 [3 l
set trade-record-current
0 q" E2 w4 A, d$ z$ Y' s+ X! @(replace-item 2 trade-record-current (item 3 trade-record-current))
3 G9 L9 Y/ t$ @$ P( P6 N
set trade-record-current
9 Q7 b- i% ?, v' F$ P6 E& B& r(replace-item 3 trade-record-current note)! ^+ Y$ A4 k, z2 \0 E3 T2 Y6 Q1 i

$ D  K, z/ d) ^1 a" v3 O
0 b0 t$ }& @  O2 |" T$ ~
ask customer [& M% B0 t+ ~' w3 ~( F8 h
update-local-reputation
2 q" P5 ]' t/ m5 s0 }5 Cset trade-record-current6 n1 m' `0 w- X" U
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
. @2 w( v) p+ M. u
]! R2 C' G3 k' B* _
1 c! ~0 Y5 r9 H  c4 z: y9 g

% j0 a, z9 r+ ?  L7 d5 sset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
9 J* ?8 x6 X7 [9 c1 q% {) o( ]1 W
* Z8 V9 K8 o# I3 l! f* `
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
! w" y* o5 i* D( z; }. O% |;;
将此次交易的记录加入到customertrade-record-all. D+ o  v: q% x) Z( x7 u" M- \0 V
end+ J$ o7 _, ^1 e( _
7 z  g1 G" K5 N; L7 P% @( d% H
to update-local-reputation
& I% _: k2 a4 M. h1 R0 lset [trade-record-one-len] of myself length [trade-record-one] of myself- m0 c& q  ^+ u9 |) V5 x8 D4 @% g

7 d1 S- w/ I- s9 X( ^, @% E& H7 Y0 ~+ H  l+ F: x
;;if [trade-record-one-len] of myself > 3
+ @. ^3 z" R3 p* s4 l) [+ x9 Y
update-neighbor-total
  F( j# [3 K; e; B' v0 o) f" o3 I;;
更新邻居节点的数目,在此进行
; ?3 z  S4 G: f6 }; {; nlet i 3
8 g+ Q, E5 r; e( F' `3 _: A' s% _! Clet sum-time 0
  J$ b) s& i5 fwhile[i < [trade-record-one-len] of myself]
/ @- P4 Q3 N2 j  X# j3 M# a1 _[; N9 t6 I' {- q2 B9 }" n
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )" Z- f/ b  M+ W' ^. @/ Z
set i
5 h) }5 A( p! F/ ~, O  g( i + 1)

* @* ?0 T- L8 J, A6 k; P]; c3 b2 r* X& A- \3 x
let j 3, z* g* \; H7 p* T+ x% y1 ?. s  i* J
let sum-money 0
0 p( K" H# J- D: U% C: d3 e. ?: \while[j < [trade-record-one-len] of myself]
5 C" t: A9 X1 c0 C* x[
6 h6 N( X" [/ h- Lset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)5 ]( e3 t) N1 g3 J  F# T5 j1 v
set j
# o! Y2 G* Y( n! L: w/ }" W( j + 1)
4 S9 K/ \( }% X" w0 }# b% F
]
/ O  Z/ J) z$ S$ T0 E1 jlet k 3
4 F+ L7 }* m9 ^, Dlet power 0
5 x- T8 ]6 l$ L% Slet local 0
3 j9 O* ?( O/ G! i7 B* P5 U! Q0 T/ ywhile [k <[trade-record-one-len] of myself]
8 ?$ V7 H5 j+ S' `' y2 b) R- m7 F& u[
3 N4 h3 T& j8 Y+ K7 y5 y, R7 n; J8 R6 pset 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 F) l# j$ E0 E& k, ]set k (k + 1)  c5 f) o$ h  j/ r8 c8 R! }" [
]
3 x& |9 I- ~! Fset [local-reputation] of myself (local)
- O1 N% a" L: Y/ c& p1 Hend
( {" T  ?/ P, t
# j8 i! M" \2 pto update-neighbor-total' S: d  F6 H( @: w
3 y; [5 s2 H: d2 u
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]/ A) t& e6 K+ [$ f7 `( E
+ N- a5 a, l) ]9 Q  q7 C

4 q) G5 z0 n. k$ K3 Nend' v1 {% E& X1 b; M& ?

/ A. e# }  I# Oto update-credibility-ijl 2 o1 x  b! N: A; c- O1 [+ `

2 a9 W0 ~1 f4 L$ l) b;;
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' z# W2 W) d7 v0 u$ p' U
let l 0
  B2 F$ n* A; cwhile[ l < people ]/ s9 J+ M4 L3 y0 t- F
;;
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
5 [; x& P) `2 ?4 j[
+ Y  s5 {& X9 ^" j) @6 C# V+ jlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)% l! K7 I- h1 O. K7 B% V
if (trade-record-one-j-l-len > 3)  o$ \6 U0 A% I# l
[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
% h- g" H0 u% xlet i 3- v( |. ^) e8 y
let sum-time 04 b& i) ?9 o4 O$ v
while[i < trade-record-one-len]
. r! Y6 ~7 W+ n! g# w0 M5 s# a. n+ ~( ?[- L  U) B& c1 U# W+ M
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
6 [6 ^' p! K% c+ a3 }/ v( V/ P1 Fset i
$ w$ P' n7 I2 n- y3 J( R  u( i + 1)

( j% G6 b8 x8 p]
6 t  p3 [4 }2 s9 ~: Z! Plet credibility-i-j-l 0
" L; \) u$ i, v! z;;i
评价(jjl的评价)
$ u8 g* R7 U/ `) M! C* B$ z" Ulet j 3
2 v7 O& W$ |0 ~let k 4
. A+ `* c- ~9 |5 i8 @" y* W$ A3 Gwhile[j < trade-record-one-len]% G/ q" f# k& Q) O3 j
[. `5 M: Z2 {% T: t: l) \' x6 z+ O- z
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
, M6 H( r( B9 V* w6 h4 iset 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)* V- O3 r0 \; h& y. L2 h
set j
8 A/ A( r. {( ~9 C/ e& N  B( j + 1)

+ Y/ b' _: K( R7 K: l- v]
- _  a$ m' B& 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 ))# V0 d3 \; w9 E; \. K" W

; l1 |6 F. w/ r: j- s: }) K3 ?- n
, U# q9 d, S7 Q+ T8 T6 U9 x
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
0 H5 K9 `, M/ J3 I# q;;
及时更新il的评价质量的评价+ ~0 @4 S9 J! `. g  ~# ^
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
% Z# O, b9 c/ p( J+ D7 aset l (l + 1)
# p) x* I, V; }/ N5 ]3 \2 r7 t]
0 ~0 }! Y, T1 z. Y& u6 c+ }) vend: d- L! C' M4 d, C* _' C1 N
2 k+ |  G7 p; @. O2 F- A
to update-credibility-list* X6 B9 j+ T+ `4 p
let i 0) j; s0 f1 R5 |$ j! F+ `; d& F
while[i < people]& P7 b, r4 W% l4 c- A
[  l+ e) B5 c0 v/ B) [
let j 0( c1 X) e& N4 Z6 }- d/ G# T
let note 0
0 d* `/ y/ \: zlet k 0( p  X$ l5 J+ @2 m  z
;;
计作出过评价的邻居节点的数目  o; @9 {5 T% L2 }$ ^
while[j < people]8 t# ~" m* |/ `9 x! c5 g( a
[
! H5 J( P. F' _* h" hif (item j( [credibility] of turtle (i + 1)) != -1)
) A: P* r) N' j;;
判断是否给本turtle的评价质量做出过评价的节点7 }) A: c! o3 Q1 R: V! G
[set note (note + item j ([credibility]of turtle (i + 1)))
: ^( O/ i8 I, s' A;;*(exp (-(people - 2)))/(people - 2))]
. W' b% X' }/ p. O7 c; U4 }
set k (k + 1)
' M' u* F* Y5 ^) Z' A" Q5 M]3 Q% h! O) h/ y0 H7 x7 i& t
set j (j + 1)
9 P  C* B; U8 k$ l0 r$ H/ B; H  I]0 e  E% I8 F# e# G% s5 j
set note (note *(exp (- (1 / k)))/ k)
. \) i( N! Z- i6 W" S6 r! _8 d: Gset credibility-list (replace-item i credibility-list note); y1 t9 e, |( r: Z8 ^% n
set i (i + 1)
( r1 f& [; E' b1 [" L3 U* A& ^]
/ i3 H7 A) v; T) xend7 O8 R, G: ?4 D( B- M

4 |5 ]. B, c# sto update-global-reputation-list4 {) ^' J5 S! Q! T  S$ r
let j 0
5 `1 p1 s$ v( f& O- U0 K! _0 @while[j < people]3 C) e0 K, f$ \/ T( K8 b, y$ @
[
: j8 ]4 G5 K  ~7 A, Klet new 0( y: @1 B. @& t1 L. {
;;
暂存新的一个全局声誉  e  Y, T% L2 B+ V0 n
let i 0* Y5 j, d5 i# y
let sum-money 0
5 |1 w7 T5 ]; J. v; Q& Ulet credibility-money 0
% n: k+ e" L% n- b" m7 Z& ~; r# _while [i < people]  M) Q! H  f& a- n
[" D! o8 Q" f% m5 b9 S* W
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))  S& \0 p% ?1 N  P& U6 i( W: c6 p+ ~
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
  O5 s2 i  W  v( [set i (i + 1)
4 i, V, K( S3 k6 |) n& m3 _! G]6 t" U; E- ^# Q& Z: w
let k 0; {' E- ]. }' y' G
let new1 01 i" p3 l* s# c8 N3 h: s6 D
while [k < people]
! e; {- F2 O3 N0 Y5 w/ ~[
" T) }6 i: D; B0 T8 E( Y  L. oset 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)
* V8 e+ K# Q# c, h& ^set k (k + 1)
1 y  v3 V; a! k3 N* u& @0 e: x2 G% r]5 H3 p& k; W/ N/ H" h* r: }
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ; \/ \$ b6 a1 c0 P, ^* D0 m
set global-reputation-list (replace-item j global-reputation-list new)( V" y+ Z7 ?! Z$ c) p; F: P
set j (j + 1)
% ]* E" |: n/ l: ?]. ?% g( V0 N$ e9 N
end
" i7 i! R% F, D* \/ n) x! K' X: c  j! y) O
7 D9 i. z, @: M# |
* E; N: j3 j: R* p7 a
to get-color
, L* n# g# n# v" q: j5 a6 ]  O+ K" B+ O2 @
set color blue

+ n% e. q4 S) j) \/ o" A3 send
! C5 w9 [. n' a6 P
( [2 D* F. \7 |. |to poll-class1 y6 T! D  t! S' b# |$ h
end* r5 x1 Z5 e! {8 r
  A1 M" I5 ^; f2 N3 O% y
to setup-plot1, A, B9 K9 @; f, a" D9 y) {( E

; u0 ~; t4 F' j8 Rset-current-plot "Trends-of-Local-reputation"

( h+ T% X/ e7 w/ n; m2 }" s' Q9 b& M" t0 n* g' S
set-plot-x-range 0 xmax

4 I# Q1 P$ ?# O- U
4 N) ^" I( y% E4 z, @5 ~7 bset-plot-y-range 0.0 ymax

  |2 X$ g5 Y$ a' N5 Iend" [' V- N! z0 E- r- T5 e

% H7 W. z; g# Q* F$ Z9 Gto setup-plot21 g, V" R7 o! @5 B$ L/ z& X' Q

  y/ C8 F; Z$ q  x; h8 A. Pset-current-plot "Trends-of-global-reputation"

" u& o8 X; t- o  t
+ B0 B  m; v# X; c# @* m, xset-plot-x-range 0 xmax

3 z, |% p6 O8 q
& {0 S- _, p* p" Tset-plot-y-range 0.0 ymax

& g6 @) {6 N) z" A% }# iend
1 b! w, H) l0 k& G' {8 D2 {8 |8 ]9 d
to setup-plot3
8 _* e; S! \  n8 C$ W/ ^0 c$ C. z9 ~$ q
set-current-plot "Trends-of-credibility"

0 j) v  G1 o; s8 f
4 q! x2 w; u' a- qset-plot-x-range 0 xmax
9 ~# l3 |) ~  M# ?

/ j0 G2 l$ v$ Zset-plot-y-range 0.0 ymax

3 q& g4 T% i" N' Vend
6 k! ]% u7 z* R1 ?
7 `9 g* d' t3 t  l3 R( uto do-plots- @$ {5 b) A3 A% L8 y: X
set-current-plot "Trends-of-Local-reputation"2 V( o) [6 M. D0 z. |6 V
set-current-plot-pen "Honest service"
  i$ q- H: z9 B$ }6 Tend$ R8 ]8 z3 k- Z! x7 S: @. @9 ?3 }
/ N: S( c" q# L  K$ I, u
[ 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.
( R( c+ K7 c# }$ M
, a3 M+ o' N/ p( b/ U4 p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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