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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:  M0 ]1 E; N. v
to do-business
7 c: D. U: d1 j. X rt random 360
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ifelse(other turtles-here != nobody)[* p$ }& W$ b0 p0 ]/ o
   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.
' u1 P# f0 H+ E; m3 E8 ?   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    # P: m6 [7 {5 K; p3 F0 \( d
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer6 f: v8 B! a9 v0 [6 b7 ?! r; V
   set [trade-record-one-len] of self length [trade-record-one] of self# U; M4 Q+ m; G) a) T. |
   set trade-record-current( list (timer) (random money-upper-limit))
5 y' l) @* U' a8 E7 }( f/ G2 I! |
+ x0 {6 L. P1 T. z4 v6 `问题的提示如下:
4 B& U: ]5 q$ T& i* w- [7 g3 h
. p2 R6 B; P4 p4 n; qerror while turtle 50 running OF in procedure DO-BUSINESS- w% L. R/ T8 w  Y) |
  called by procedure GO
" v, J. o* z: l) L6 Z, E+ QOF expected input to be a turtle agentset or turtle but got NOBODY instead.
* Z  h% Z' w, l" \9 _
(halted running of go)! E/ F5 A+ u$ p8 z( K7 I
6 M5 r: {7 r" l- M; O: j/ s  \0 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~~
# X4 m+ ?: c9 N2 j( ]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 B3 s) q/ V1 t3 nglobals[& b, D0 k( q6 x# X; P8 T
xmax! o- ?; b) O" }/ Z6 b; z, h  _
ymax7 e8 @1 A3 {4 \1 n" Y2 [+ o
global-reputation-list
7 @6 R# e$ }6 k/ J, e4 [5 o4 O: F" }6 m2 W
;;
每一个turtle的全局声誉都存在此LIST
  N+ N. j1 O* @' l( L# z  z: I! acredibility-list1 x6 j3 }) n/ m; w8 \3 e/ _4 z
;;
每一个turtle的评价可信度7 L" l4 V6 z; \) s
honest-service
. |3 C: c& Z) }) K% O! q! F5 _2 Funhonest-service
7 [5 @5 E+ i4 x* P$ c& Noscillation
1 @2 ~6 C: t' n' a& l) }, P# crand-dynamic
1 ?/ s! F' q6 |6 @- x  p]
9 N: ?( g3 {( T. W$ o+ P. g7 |$ V+ X9 T9 _: f
turtles-own[' f7 a# H% z0 v8 T, C$ u
trade-record-all
: x- I! [  \+ W; r1 e;;a list of lists,
trade-record-one组成3 @0 S% I& q- p5 S
trade-record-one# f, g' f! R. y/ V2 ]
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
+ e. C0 `( p& V( {7 Z( K" ^" V9 t4 W& z! G2 A# [" h
;;[
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]]
2 Q  @6 j' Z/ \) ttrade-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]
9 l3 r& h4 Y. c% ucredibility-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
% ]" ?% o0 c  S, t1 S1 _* w+ k* W8 Xneighbor-total
, L- C+ Y# v! \/ V9 R  h& S) C3 i;;
记录该turtle的邻居节点的数目
1 W  `/ N% p# k0 F; i7 U' i9 Htrade-time
; C- j0 Y# Q' m. U;;
当前发生交易的turtle的交易时间
( j$ O( |0 v" Z0 p5 Z- Cappraise-give* N' V/ _6 |+ H: E
;;
当前发生交易时给出的评价
8 b' ^8 Y+ J( w  i; Zappraise-receive4 f: }4 d8 D# K; o8 U" {8 S+ S
;;
当前发生交易时收到的评价
9 i3 G8 |" q8 rappraise-time9 Z6 ?. B7 Q% S9 T& `# H* C
;;
当前发生交易时的评价时间
7 t# h6 M6 o$ {local-reputation-now;;此次交易后相对于对方turtle的局部声誉- L6 |) a; `0 k0 U  H! B
trade-times-total
$ V% A* j5 E$ g8 M  D  V;;
与当前turtle的交易总次数
$ k9 C6 u' l1 l8 X/ Y2 k3 C# btrade-money-total5 p' y3 j$ @! S- ]5 u
;;
与当前turtle的交易总金额2 _" O* r2 t( a% B# q
local-reputation  R' `" a" \; ]2 H
global-reputation# p# v/ ?5 Q1 |
credibility
  L7 u, B* G% R3 W$ u5 ?;;
评价可信度,每次交易后都需要更新7 z1 v2 r0 w, e! j+ u6 O% I
credibility-all, g# x9 J* N) n/ g
;;a list of lists,
credibility-one组成。[[1j的评价质量的评价][2j的评价质量的评价]……[ij的评价质量的评价]……],其中一共有people项,根据7 o8 w! a$ |/ y. K1 |% I6 j
9 e! M% c& p/ E1 L! s& 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: v; Y- }( V$ B$ _
credibility-one
+ y0 p+ b7 k9 n+ I9 y* \;;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people0 s" J! f1 U( |$ E6 V
global-proportion) j7 n9 x$ s+ B1 c7 U3 C
customer
8 }6 U+ W/ y4 `+ d* Ocustomer-no7 ]7 H. j# [, d
trust-ok+ r; @' I; S, m8 V, t
trade-record-one-len;;trade-record-one的长度! S$ }4 @% C6 G. K1 Y$ N
]* ^$ K" ?/ m" ~" R4 ]& D% z: m

. T" L, R9 c; k1 D;;setup procedure  q! {! q0 C5 t& p& X$ Q' A
$ e/ \( W' S6 e/ I' G. e
to setup
7 c  Y: d7 g8 ?2 `; \+ t' ?, L! E! V1 Y2 F
ca

" M: Q- l0 w, e) }% z0 a
3 w: ?& H2 ^/ u$ m0 w* \: ]" pinitialize-settings

& {; N9 u: G; P" j  N  k. E2 _
; ^, n5 a* |1 U" fcrt people [setup-turtles]
5 v/ p4 o+ A' G; y; u) w7 a2 s

6 p0 ^( m6 P9 y8 y- oreset-timer

) F2 @$ x- V; w' x7 R) @8 K4 c  \, ]. q1 {& M; x( ~
poll-class

5 W8 G/ f( ~( c
6 A2 x! i) F. V, D! E; ^) }' z/ ]  u# bsetup-plots

3 ?8 X7 n+ D$ c+ P  f0 U
8 O# X1 i' ~* P" I; w4 |& Cdo-plots

0 A" K" t5 ^+ U7 Z! \; I1 t2 }/ vend
" L+ v8 u0 ~3 F# n3 n4 M% Y( X! m% ^7 {7 d" G% r# X
to initialize-settings; g1 }* O9 j% i9 x
& c6 `- g; z  ?/ o
set global-reputation-list []

. \) i. ?6 E6 x- ], ~5 K1 a! q
! _3 z* E/ [$ M7 T* n# M" l0 m' cset credibility-list n-values people [0.5]
3 L' Q2 S  W! S. C) E
3 Z& ^0 H5 @' d+ J5 u# h! ]
set honest-service 0
% c1 J3 |+ H; v" F$ v; `3 X- b
& i1 t9 l9 H! e) L( H) @8 R7 z7 L
set unhonest-service 0

* W1 p% H$ o/ `3 Z3 I' r: U# e7 Q+ U9 O6 J8 h; `; d
set oscillation 0
8 B5 D6 X: t( f" _1 [
* D" Q2 o: u$ @. u& l
set rand-dynamic 0

+ D8 w. t; ?' ^, Y% Q- lend
: o" w$ e" C8 t$ _4 N! T+ A  y& S; n( o2 z1 F
to setup-turtles ! v2 @/ D1 M+ H7 ?, k
set shape "person"
3 l' M- p$ W1 v2 \setxy random-xcor random-ycor
+ y& l9 L" H  [/ b1 r7 \1 cset trade-record-one []! K, x5 i: a& k

* t  N% g: d8 x; v' Lset trade-record-all n-values people [(list (? + 1) 0 0)] . Y( c2 ?0 {; Z  @, |- N

8 J/ K/ j; p$ R( B& {3 a  z# r9 sset trade-record-current []
, |. y5 [5 ?' k7 ^: r# p' Aset credibility-receive []2 ~- q+ L* q. f' @& A; N
set local-reputation 0.5) D! b' i% h0 j- u
set neighbor-total 0
9 \3 c! t# ^3 E: `set trade-times-total 0
+ Q+ Y" B- z5 W4 Z8 ?set trade-money-total 0
- X  U* F% C: t: N# Rset customer nobody/ W" j9 y0 S& C$ B
set credibility-all n-values people [creat-credibility]8 [& T5 o$ ]; }3 w. V
set credibility n-values people [-1]
0 p4 c" c) f( R( jget-color
2 z' U5 s# L3 S+ I; T6 V5 [
; y/ _, _' k2 Y5 b, Z" @0 A& i4 }
end) U/ u6 O9 O# T) b4 K4 j7 f

( U" Z! n$ \8 O+ Fto-report creat-credibility
2 }* b4 i& p  |. W1 U3 s& yreport n-values people [0.5]
+ \8 Q" [0 W2 n7 r1 M/ B  z, `7 Send6 x1 y2 E( I0 A
  {* ^7 F5 }3 k
to setup-plots
7 [, a7 z& B$ y$ |8 Z9 b9 G  j0 Q' W, {- Z1 g# G
set xmax 30

2 K3 C3 \( o3 E. k! \4 R8 C4 W( g: W$ o
set ymax 1.0
+ c% k" @) q" {* Y) J% z

; W/ q+ z  W: ?clear-all-plots
) ?! K9 U$ Y) ^6 D) b! j2 V

& g' L% l  ?& x; \. a) A% ^3 K0 N: ssetup-plot1
+ d* q6 Z/ Z+ j) H( }

; b. m" S. x2 I' I* o+ m$ _setup-plot2

# f' y6 S& }$ F8 q% r+ z3 i! t4 `% n, l
setup-plot3
' b3 u: H2 S! A, t. @! Q  E
end  E: ]8 L6 u! R2 A, s
' w; Y$ C+ G" k1 U" f4 U' ^
;;run time procedures
+ T: F/ s8 V6 N$ N# s. n6 t( C
% d4 k. [5 `& f! w2 O! ito go
. S" t! J$ ^  L/ Y6 {1 k! s4 C2 A6 g  f" R+ u/ q5 n7 _
ask turtles [do-business]

0 s6 w  \- d$ I) pend
: p$ F1 y3 L0 N' ]0 c+ Z% F2 q% z* S- f3 R
to do-business * R' B! a4 Y, s! F) x; B
* V) E# J! G& S
, o3 E+ t' N0 G" @/ J" n. P! |8 B
rt random 360

: e& R/ f% l0 C- I& G5 q* {
% S% M# H9 y: {6 z. T) H7 Dfd 1

) e' o$ {% C! y1 G* l, Z5 O' q/ G0 L8 M
ifelse(other turtles-here != nobody)[

+ A+ T% g) _# N5 Z( w
- V1 }: [* j1 Nset customer one-of other turtles-here
3 y' w* C: r) I6 D' _( Y8 S  T
( t1 o/ n( E! Z; [! l4 U1 L' h9 B' |
;; set [customer] of customer myself
& U5 k  }8 u; q4 z5 Y/ M
9 C) P5 l0 b0 t0 o7 H' e, w8 A
set [trade-record-one] of self item (([who] of customer) - 1)5 H5 m  b( F1 v- A# z1 R" ]2 w" I
[trade-record-all]of self
, w# \9 v2 H! b+ w;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
& i# T; Y4 m3 e2 E. k

$ `$ i% X1 A3 q9 M) Y: }; ?5 uset [trade-record-one] of customer item (([who] of self) - 1); C- @1 n% q6 n5 Y9 ^& P
[trade-record-all]of customer
# o/ A" R. g+ `8 c3 W8 a
8 ]1 Z) J: I& q. ?" r  n
set [trade-record-one-len] of self length [trade-record-one] of self
% r" T" z- b& i" |2 w& q3 ]+ ]

- w  U: d' u" Qset trade-record-current( list (timer) (random money-upper-limit))

6 E2 A7 b  s7 T, T: a
, U9 B/ H9 x. |' T9 ^ask self [do-trust]
$ Y: M  T. C0 u  X2 U( W* z2 w;;
先求ij的信任度4 ^1 J  P  E9 ?5 b
! l8 ], {5 \! }3 r; B: t7 C* u4 ?
if ([trust-ok] of self)
+ V- g' y& m0 a9 t# S;;
根据ij的信任度来决定是否与j进行交易[
9 b9 T  P! {* z& H& x+ V3 kask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself6 i! k; r0 P# ]7 K; p9 U
- F+ M0 |3 q0 M0 v6 E8 N! C( H1 O6 k
[
2 j6 S7 D* k9 f/ ?3 d

( L2 ?$ \' B6 hdo-trade

( w# W6 R. x3 K1 D1 U
* X0 r) z& ?; Uupdate-credibility-ijl
! @9 J4 |& ^8 v5 i8 n

# Q* {, p' O- D7 O! M+ @6 `0 r0 a7 b7 xupdate-credibility-list
# T" F9 u9 L. F$ B* g7 Q* e, d
/ f+ |% p3 ]' k+ B) \: ]- `

$ O! A& }; i! w. zupdate-global-reputation-list

! ?5 N, b9 b& _* `  ~; L1 ~! C: K0 i, b% \1 ^4 \$ K5 s# u
poll-class

% f) ?! R( c/ i
; Z; W1 G% |" o; n& E( J$ ?get-color
5 D  G5 {2 h; ^6 V8 h

0 e. L5 W7 w' ?]]
  f/ P* L0 R3 y5 Y* C$ Y1 x( q  l" b( S0 z$ {$ E1 l% k
;;
如果所得的信任度满足条件,则进行交易
4 R! Y: I6 H5 @+ |
* d' i; _4 ?* }% [# l3 O[
! e# Q1 ~, k/ J- N4 R
0 Q$ a$ G; \1 [! p: |4 g
rt random 360

- ?5 w) i" r: n4 r+ `/ u9 q8 e! j
/ U. c+ |+ B! D3 I1 Zfd 1

; A. p2 F2 p/ d) M9 J3 N  `; ?  e# u  t  ]
]

, c; O" P' @1 g: E. R0 i1 g9 l& O/ ]  a6 \
end
4 ^% f; o  M$ U4 Y. e" y; S- N+ d
6 i6 T+ T) {5 Y: G9 v* L; w3 U$ y
to do-trust
8 X9 O. \9 K7 N+ d& }/ A* K$ Wset trust-ok False! e3 J4 l3 w; B: P1 F% }
7 j; |. u, W- Z5 K) N
% n: C+ K$ A. O, L# G
let max-trade-times 0# y) r8 ^$ ]- ^& K6 @9 S
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
) {+ l, B9 o1 h/ o/ Nlet max-trade-money 0* ^* Y8 T& z6 r, B( o0 _
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
" O6 f# n2 T/ K( t, Alet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
  d7 L- ~# }( `  E( ]) e1 z8 c( q1 u# [2 B% i& s- T* |  l1 E
$ s% U5 v/ v# M1 Z
get-global-proportion# k( s, Q! V9 |
let trust-value# Q& y5 ~# s& `1 q
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)

5 a. Y8 b3 J& w  p6 f; Jif(trust-value > trade-trust-value)
. C. N( k* R/ y$ {6 \0 v[set trust-ok true]
+ o, Q2 G0 I- rend% ~3 K9 ^1 }  s$ `- g9 u$ J
- w+ p' _3 d/ P- U2 Z9 @4 _
to get-global-proportion. H: ~  }6 v4 ~" k$ Y! G8 A
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)' E! ^5 ?; a1 y/ F  a* X+ y
[set global-proportion 0]  I$ s4 \) B  z* N9 b0 ~3 ]
[let i 0# C, i! @( r  D8 r) W; ]
let sum-money 09 b$ F. z2 s0 P3 g0 D' {- |
while[ i < people]
. R, t6 l3 y. D( _* u* W[
5 x! x, j; C2 t. ?0 ^7 Yif( length (item i( e, Z1 Q9 A% w* P
[trade-record-all] of customer) > 3 )
4 F5 W* Q+ C% O) P( I7 z+ F
[7 e0 z$ d- p0 q6 E5 H, k- v/ U; K' F
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))5 H3 Q  Y+ N: M( h# R7 U! U/ p' ?
]
0 M  V" F4 _; ]+ l; P- F]
" Y7 B4 ^2 B" R# z5 n5 olet j 0
) |- k5 h5 n) b% dlet note 0
/ E/ }/ V) U$ B, ^6 kwhile[ j < people]3 T) P% L3 B9 |0 M3 P
[' l* U2 v" A/ @0 V% t
if( length (item i: F% o; Z3 S$ h
[trade-record-all] of customer) > 3 )

* l1 g1 W* B" y[- N; A: a# A9 I  S3 a6 G$ V6 r
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
. a6 X; F# U4 W, |. ?" v  C# W[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
, J) G$ p0 `' u* t- S[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
0 ?, c6 ?* V' b& B7 W7 Y& C4 N]8 K4 r# F6 b% Q$ M- A
]( ~  h3 j' c  C. V+ i
set global-proportion note, O; G% k- h, G8 n8 W" z  H
]
/ U/ X; D7 s' g" B5 u: @end
9 l" R# Z! n0 D' n( A
+ C+ H! y1 ]' |0 U0 k/ Cto do-trade6 n# {8 p* n* U3 W4 m( W$ _7 L
;;
这个过程实际上是给双方作出评价的过程
, Q; N1 O' D) @4 ~+ ^set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价$ d* r5 L8 M  E% f1 L8 A
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价- ]' T) p1 @; Q9 G) C4 G0 ?
set trade-record-current lput(timer) trade-record-current
4 K; M- a/ t& X! {/ C;;
评价时间; B; ^* d3 u8 U! S' }! A, m- u8 V
ask myself [" I9 `* s9 g; }, l6 L( B3 }
update-local-reputation; e" q# r- \) o( U
set trade-record-current lput([local-reputation] of myself) trade-record-current, A3 L0 _1 |/ ?( K7 @( V
]
% S3 B9 Q  f  Q% X0 r, ?: q9 pset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself: s* U2 n) ~4 I
;;
将此次交易的记录加入到trade-record-one
" P. y  A# s- A" b) U- tset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)# ]' z- p) V' H! v0 J$ o0 A8 x
let note (item 2 trade-record-current )
+ r7 k& e3 s/ P4 @3 C- y7 Uset trade-record-current
. |' H+ t) _1 J) Q(replace-item 2 trade-record-current (item 3 trade-record-current))
) j' t" H3 {' ^2 C* A+ E" P
set trade-record-current
" m! @0 A! d/ |* J& L1 |(replace-item 3 trade-record-current note)
( G( n/ b0 g* e  u/ w' i9 ^9 |% a, n; o+ l* I; G1 W# a% U

  p! Z8 m2 m2 T6 M& @% }ask customer [
! {8 h0 w% p- aupdate-local-reputation
5 u6 L& Z3 N+ d, M. |- U) L9 Fset trade-record-current3 k  Z) T6 Y+ y8 x% q; B2 R
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

! o  Y  G9 {+ p3 n]7 j1 C+ }) g6 }

' _* o' F! r5 T5 y6 P. g2 F
" Z$ x) m$ y  E- z) z
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
7 k3 k+ @  k( s5 o# O

9 @4 T. b+ d! |7 Pset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
  W  v# i' y1 j' z, m# r$ d;;
将此次交易的记录加入到customertrade-record-all2 Y; ^$ j! Y/ n# a
end, p" u) [! B8 Q4 f  H

. f- A% ^4 c( R4 K( @3 B7 bto update-local-reputation
8 b  S! q( E7 V/ Q( G, `0 l5 f# Zset [trade-record-one-len] of myself length [trade-record-one] of myself+ t: f6 H3 Y  {& o* |" H

1 r7 P) J/ b9 l# j$ t4 y" t
- y% C/ T& K6 n;;if [trade-record-one-len] of myself > 3
! [( }0 s# s0 S1 G( d) b" x8 ?
update-neighbor-total
8 ?3 t5 o+ I, G* z6 Q9 Q+ E: c3 C;;
更新邻居节点的数目,在此进行
- |- [7 w# Z* d3 Rlet i 3: S: u$ \. T$ H2 X# `2 w
let sum-time 02 z/ {+ C4 }$ L: @" ^7 L& ]. A
while[i < [trade-record-one-len] of myself]6 |" D- [2 n+ \- {  ]0 G
[
  o- q$ @. D: M$ vset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) ). R  ]3 o9 n0 y
set i
7 l0 Y& V1 _/ j; L( i + 1)
: S" l) _  O* _) p
]6 ]1 j' s! ^- B
let j 3
6 R4 p) g0 f% N! d) O/ p6 [( T6 ~let sum-money 0# L3 }) T: }* v/ k4 t
while[j < [trade-record-one-len] of myself]
7 r) O1 Y9 h/ g9 Z- c/ N% w[! L4 g- E3 @8 W5 k8 e& h* y- \
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)
% C% v; c6 J7 C# M: J, M/ m. Lset j
  q6 O  t2 \1 e& t3 Y( j + 1)

6 F0 K! }; s+ @& V7 G, a]3 j5 k4 d' l) E$ B
let k 3' z* Z/ u* K( @- x+ u
let power 04 n4 P" ?8 O& j7 D
let local 0- `- G5 g. l# t/ C/ l, t) B6 e, H
while [k <[trade-record-one-len] of myself]
5 E6 v3 b/ @/ v[7 x& S' r" F( z8 i4 z6 L0 J5 Z
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) ) B  z1 k5 r. r" b. \% z! N
set k (k + 1)+ @" W. I2 g# q" @
]
! ^% q, A8 d% e2 x0 G& m; s0 Vset [local-reputation] of myself (local)
% m& u; @/ C( o0 n! Fend
$ X+ x" W7 b% Y& W+ b. b
8 S( F2 P" n3 K2 k: mto update-neighbor-total
+ `2 l" Y) {* r: z$ z( }+ H& P& t  J% Y% e8 B* W4 _/ J( S
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
9 C* k1 e  I- n& N
; Z1 u4 J" Q* o7 T

" H! T& m+ Z# |3 L. Nend0 Q  j" J6 n) e6 R3 j

* l& w' X( _- r+ C' xto update-credibility-ijl
. x1 L4 H0 |6 o+ o! R
9 ]7 V2 `$ h4 }4 x) [6 G( x;;
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。
2 y$ E! O' @3 R3 o7 llet l 00 U" R! z' k0 N" U* L
while[ l < people ]. D  W& [5 a  j- d: N) B
;;
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0 L& M) Y& ^2 W
[
& |2 I* D, _0 h7 rlet trade-record-one-j-l-len length item l ([trade-record-all] of customer); J( |$ A+ `) ^* k" v+ ]- E
if (trade-record-one-j-l-len > 3)
7 _0 l" n: X8 C6 P" p6 F[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; g; _* `7 R2 k( K
let i 3
- L4 i& _8 Q* X( w8 n: Q& X6 Slet sum-time 03 D- y8 h3 d  o! ^7 ]
while[i < trade-record-one-len]
( A2 u1 g% y2 N0 v8 a1 h[4 `/ ^; Q* D0 O9 W+ a+ j
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )3 D. z3 U3 ~7 M( T
set i
* ?# z0 G* H5 F8 Q9 P$ l( i + 1)

1 X' B, d% ~* L; y. J* L7 j" u]
0 \. ^+ v" T* p6 W6 nlet credibility-i-j-l 0
+ u$ Y4 K9 B+ e4 Q4 I;;i
评价(jjl的评价)
* h; K6 J5 _  {" Z3 l) |2 \. w8 Klet j 3+ S" X( T& A  j$ o$ U& d: g
let k 49 m5 X- Q7 @0 f3 E
while[j < trade-record-one-len]! e9 R7 A# ]* R4 R: M
[
4 k+ p8 w! {1 W& ^4 V  t4 E5 twhile [((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! {* I0 `% W, i4 w; J- Q0 r( X
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)% Z  Y+ ]; W. M4 q
set j
1 _9 p4 ]8 G' T( o( j + 1)

$ l: e8 W7 W* h0 g  `& T]
: e  i* u* Y/ Rset [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 ))
: r" d! I2 {! E- W8 u8 Z& b2 a2 g0 U* z

; b2 Y5 ]# c1 k& blet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
- Z) q9 A/ N# z4 W- [, x;;
及时更新il的评价质量的评价7 Y/ O7 d- [1 _' I9 E* a; x3 ]
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
, T- u  {% {& P8 a' g2 Bset l (l + 1)# J2 Z- r+ g& s$ }2 c' j: S
]" W7 U  O1 n  E+ Q4 f9 B0 w) n
end
; d# c1 c$ a1 d5 h% A0 V# o$ j/ |; ?, L7 |/ |+ h8 u
to update-credibility-list* J2 Y7 Y. @! d/ h6 u
let i 0
. @2 S( p" p! ~& [4 M. C& `; bwhile[i < people]
" H: {* e5 u5 w% z+ c9 h; [2 g[
2 U2 W6 O7 s5 b7 v. _' I8 x6 P/ e/ olet j 0
! O2 e) W! L( o& [: g! Ulet note 0
  U. g  L3 p/ g% _5 J, nlet k 0' |: f% U# R6 f2 h) `
;;
计作出过评价的邻居节点的数目
- O* v. t4 t0 h4 Cwhile[j < people]3 C; {2 H. N9 k8 Y- m2 C
[/ k5 h6 I: ?- d6 u9 ]
if (item j( [credibility] of turtle (i + 1)) != -1)9 d$ }( W7 J, I1 a
;;
判断是否给本turtle的评价质量做出过评价的节点
5 m( `/ V8 ?9 g0 ]4 `6 P  o6 @[set note (note + item j ([credibility]of turtle (i + 1)))
- y$ T% I7 A' @/ _7 h, j% h;;*(exp (-(people - 2)))/(people - 2))]

( l! Y+ h) |' \/ L8 t* S2 o+ v3 Pset k (k + 1)
# w0 _7 M  q0 ~" [7 z]
) h/ S; ?2 G% A# J5 x. xset j (j + 1)
8 Z; f5 U. L$ f& b1 b8 []
0 [4 e% s; M- i: c) v0 r8 `* A4 z6 Dset note (note *(exp (- (1 / k)))/ k)4 d' l1 `; h- _1 \) g0 `1 P
set credibility-list (replace-item i credibility-list note)
; U2 S8 C* I0 b! Y8 N+ fset i (i + 1)3 `9 r. M  v; F! z& r& s3 E' {
]; E, K0 I- f% P4 T: H0 p1 H
end! ?8 j% z/ `# ]5 K0 m8 O

: d1 G+ t; v! uto update-global-reputation-list8 r" v1 B! g6 C$ z8 }* g9 X! j
let j 0
8 o% \% Y% X  Y4 ?while[j < people]
! U" \- ~) v9 m! e) g[
$ R/ g7 [& {  G# O3 o  I- {let new 0
5 u- _  o+ [6 a' Q;;
暂存新的一个全局声誉0 @  d! I. L- L) d6 l
let i 0- Y% c0 `! @9 T. l' I' d6 n6 J
let sum-money 0
0 h) q+ N' r; ~9 N2 K8 c  ~let credibility-money 0
7 F9 L7 w' G, Ewhile [i < people]
3 P( {, I" j4 \1 d1 l0 Q0 V[
* d5 W2 l) c  e; _0 @) ]5 T4 ~: kset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
; c; H  X' T7 ^: b% vset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))1 Y( c) V$ b2 c; B+ D/ [2 n1 y+ i
set i (i + 1)+ q( c! C& ]. b7 A- L  _; ^
]5 Z& {3 L. _" }) p1 \3 c" q0 g& ?
let k 0
& C' A9 l' R" q, rlet new1 0% q, Y7 X. _. c- X! d
while [k < people]4 U* I) `7 h& W
[
, g2 `- Z2 ~9 V2 v6 Xset 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)
1 v+ |) {8 y- u) R  Pset k (k + 1)
/ `' J/ M  V1 h" F]$ Z& @3 z& W9 ]3 A
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) & K: O* o" M$ H/ ?0 [
set global-reputation-list (replace-item j global-reputation-list new)3 d) ~" X, ~9 e/ Y5 M
set j (j + 1)
# _0 ?1 Z/ x$ u6 D' k]5 x" ^2 W9 N+ G3 ]
end3 E7 g5 v; Y" a9 b( D

: d" _& x+ B4 q+ ?9 s4 [0 e6 b6 j1 D5 Y

" o+ y6 \' z7 ~" J' |* f6 Fto get-color8 X6 q. A0 X, C+ i7 l, {
  @" }3 d$ Q! p
set color blue
$ `2 H4 p! L! A+ V, k9 j
end
  l, o1 _  d' h1 _6 ]# B
! w: C. T1 G) a3 p, z" a. rto poll-class
+ I7 X* G5 X# ~0 X0 L. nend
: C% W0 t6 I$ e+ S$ b; g, M
$ b1 }8 w9 |' t4 M) c$ T; D- M3 k$ _to setup-plot1
9 P2 E4 V* H6 s5 E0 O1 f0 |- u2 m1 Y$ s6 h1 N8 g3 _
set-current-plot "Trends-of-Local-reputation"

2 B. |) Z9 @$ b6 p' T1 N- ^/ z
) A+ m1 ]# Y) m) Tset-plot-x-range 0 xmax
8 ]0 }2 ^& w; j% D' b3 O" }  x

8 `+ D+ ^+ w" h/ lset-plot-y-range 0.0 ymax

: r" }% j7 S2 D6 Z6 Rend
+ a# P" T; N, E" A4 M+ I$ n4 f8 j+ F  l9 ?* W
to setup-plot2, A1 e; i: h0 L; V

$ w% q9 |( c- k; Z8 ]set-current-plot "Trends-of-global-reputation"
, ~8 Q- O6 T4 y5 {8 Z2 R2 G  U
- `+ E+ I$ n& b& I/ x
set-plot-x-range 0 xmax
3 t% [4 M$ T0 \: `) j$ h
* g# w) `2 i( _  ~9 A: {# x
set-plot-y-range 0.0 ymax
- g" a' K6 f3 v- K6 u* P  P
end
8 h1 S) l, _- T( P/ I8 d, b$ v) v$ b! R
to setup-plot36 l: u) ?+ U5 ^2 P+ a3 w9 z) |
! E; ]- T: O1 w5 J6 b7 l& \- e$ x* _
set-current-plot "Trends-of-credibility"
4 m$ J' ]0 N' K! O- Y
+ z9 l% `9 o$ ^" m
set-plot-x-range 0 xmax
8 G) D: O/ b. e) }& W' C
, S+ t: S2 c+ R. H  F9 n
set-plot-y-range 0.0 ymax

% y+ o$ Z$ X1 b; @end
+ {# h8 O& L1 U2 h  U% z2 w' p& L' B; ]# H
to do-plots
+ R* s$ t" i" h- u! V1 g6 X: wset-current-plot "Trends-of-Local-reputation"
  u% g8 p* F$ }' C8 F! }set-current-plot-pen "Honest service"
' T( V: P' N% Uend8 _; j1 C+ O5 |8 |- T- Q# z
( t& G% C1 C# V+ E8 F, G1 Y
[ 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 l6 R1 l2 z5 i6 J: V

4 r9 F* ^& ^( ]3 b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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