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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:$ F6 L6 V8 O" E2 n0 G
to do-business
- T1 P: `! f$ n+ k  f rt random 3601 q, @; p" I; U7 B
fd 1* g! J2 [! S$ C+ E' ^, `4 x
ifelse(other turtles-here != nobody)[0 N- `+ i! C7 [+ ]
   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.
7 @( X7 I2 o; U- F! a   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    7 |( `, Q7 P/ X5 g0 ?+ `: k
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer0 Y9 m9 U2 G3 n# C' c! w' F
   set [trade-record-one-len] of self length [trade-record-one] of self
8 s9 A" f! v8 t; S# M- Q   set trade-record-current( list (timer) (random money-upper-limit))2 {# s) X8 T+ Z+ _7 W. K

4 [, R3 b! t  b, _3 s问题的提示如下:6 e/ n  E8 k- J/ t6 x
: q9 \2 g' M- V" b7 R
error while turtle 50 running OF in procedure DO-BUSINESS
7 c- n, v) N- D/ x  called by procedure GO1 _6 R7 u9 a3 s
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
! j& F+ `" b- n( J
(halted running of go)4 N, L5 x1 L( u, [. Y* ?6 e
' \# `" r' l2 f- q* G/ m+ |0 A
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~~
6 d! k8 V: X5 y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
& _3 V, A7 j' a. fglobals[
0 X( {5 i" T8 B% gxmax
8 t' n& M8 k$ u* L0 Jymax% |4 Z1 c6 R" T: W4 P) ^
global-reputation-list0 t$ a$ x& d/ O* @% ?8 `7 m

( G( M2 o/ y8 I& X8 {8 i;;
每一个turtle的全局声誉都存在此LIST
* R; ?; A- j& N0 T0 h) k) f! Xcredibility-list, Z' _, t  j0 E: G7 Q
;;
每一个turtle的评价可信度/ `, T/ n  C! D6 t7 K1 k; E: j
honest-service" z) e4 s: C) m8 O9 k( y
unhonest-service" M1 p' g- L& H* o7 a
oscillation& z" a4 [2 c5 |2 ~! w+ J/ N
rand-dynamic
& _  r8 ?6 Y; x# H. s3 Q]
2 b1 C8 T- K. d  l
2 Y! B1 Q8 t2 k# @+ [" H  K  Mturtles-own[$ m% C' j3 A5 y( b
trade-record-all
9 Z" r4 o# _1 g" M& \! h;;a list of lists,
trade-record-one组成) b7 p  h, f! {2 R
trade-record-one# C. D  M2 g, k( v6 L
;;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 ?) _8 J% O0 ?" ]% }
" ^! f  y1 N/ {: W" A  h& E
;;[
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]]6 f* L! _# v5 T' V/ x$ w3 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]* o( |3 W7 F& c# r4 M
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
( q: y1 l7 A% h8 fneighbor-total! R9 w2 U  h8 v0 b+ i
;;
记录该turtle的邻居节点的数目1 F1 N6 i0 F6 D0 o; w9 _% K
trade-time
0 q4 y" H: B" m7 P- j;;
当前发生交易的turtle的交易时间
" e: Y+ s8 w9 @9 E" M7 B: F* M. ~( qappraise-give  M/ x* y: u- ~
;;
当前发生交易时给出的评价- l; x* X+ j0 _" N
appraise-receive
3 i- w6 I, i% o2 r  p;;
当前发生交易时收到的评价
; Z7 y  d: A. V" v9 X" @" J' }9 Happraise-time+ E0 i. t" u# a( x. z+ F. M9 ]
;;
当前发生交易时的评价时间! @  ]" d* R/ v) N& b+ q
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
$ V% u* t% o. B" M2 v& Mtrade-times-total9 b% g: W" Q' o. y/ w8 ]+ s
;;
与当前turtle的交易总次数: ], ?" S$ @  g/ B& i8 ~8 W: u
trade-money-total
3 I' L% _, O( x;;
与当前turtle的交易总金额* g8 ~' U2 j% B* y  P. G/ ^+ U' P) E+ t
local-reputation
% ]$ x) A* G) S0 Dglobal-reputation
% |. }7 L# f: y( i2 y3 ecredibility4 K& K4 i* M  j4 q, K
;;
评价可信度,每次交易后都需要更新" ?  C/ Y  ?9 e& y
credibility-all# S0 c- @+ U! F! m4 W6 Q, R
;;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
& @, N1 m  \, i7 W9 f9 ^7 b! b+ w; J: K# V: z! O6 f
;;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
# M9 j5 R4 s0 C5 m% \credibility-one6 w: K3 C8 s, N- a% X4 l
;;a list [i
j1的评价的质量评价,ij2的评价的质量评价……],其中一共有people( w1 B. Z; }5 D- `- c
global-proportion9 l% B( t; i( W" Q9 R2 {, {
customer; m6 s( V. Y( m" j
customer-no
9 Q, n* b/ w- y, I. n6 B5 f* f/ g0 g/ Btrust-ok
! k3 C9 Y& c, `2 B- F9 D: y; ztrade-record-one-len;;trade-record-one的长度
" o8 U: d8 ^! f0 C- A$ S7 n]: r1 ?) @3 R7 @& n
/ [4 |1 o7 j' {. e2 [8 q) G( y5 P
;;setup procedure
6 Q0 y! h; s$ B1 B- d4 O0 m$ w5 w
' D# ~1 u- W+ t, Y  O8 O( Zto setup: M, U1 R9 S' B" {

) U2 \# f! X$ m' Wca

1 E3 j, a4 l! u- {9 }
5 _6 f9 e9 E$ b) z# p; {8 Pinitialize-settings
8 U; o' u4 K% n8 b+ V
3 h" U/ f' c7 n- v
crt people [setup-turtles]

& F; [, H# i! q1 G
# ?0 T; L" d, d* wreset-timer
! P; J5 n0 {# ~/ w
/ O$ d- ?9 z% e3 p4 z& n% H
poll-class
" p1 I' G6 D) W7 ~5 p1 P, m% I

( D7 x& k  F1 ]2 ^8 ssetup-plots
3 j1 z+ g2 D1 h! y# N

8 M3 Y, p# v2 Z9 l7 h' Xdo-plots

4 V" D+ p) r' b5 O4 n( yend( l7 ?: I) g2 Q1 }

( D" \# R0 C! \9 k% O! p9 T( e0 kto initialize-settings* W/ X( R$ v" m' b  }  D. u

' p. o( w1 U& e0 M, r) V: iset global-reputation-list []
7 @- e1 J+ i+ U6 y6 t2 B9 \& ^5 F
' s8 @' u$ }$ A
set credibility-list n-values people [0.5]

1 P+ e" `( q9 [: Z: |, ~% N+ G. ?2 |: I
set honest-service 0
3 p1 \3 d$ P! K, z' u/ V8 N; J
8 [9 `0 z$ |3 }% Q2 A2 Y% z  K+ p
set unhonest-service 0
1 w* ]2 e7 ~  m7 x4 N

9 ]5 V# X4 Q" W, Kset oscillation 0
+ {: I/ z3 l- Q) d

) X( m$ o  Y# Y6 b; {( p$ B; |set rand-dynamic 0

3 f' y4 k, V, T7 F4 D8 Bend2 R$ ~: [$ B  ^

/ J4 r! ]1 _9 r. p+ v: Z. t! l5 zto setup-turtles 9 \3 H* H' b- J- s4 L- d
set shape "person"6 _* d% H* r1 l  n
setxy random-xcor random-ycor
* ]  @7 S/ U7 E& v. Gset trade-record-one []
1 r2 i4 z; N$ M: z

, x. Z3 B6 v8 ^% m3 t6 U- Pset trade-record-all n-values people [(list (? + 1) 0 0)]
; c, z- T' s& v/ Y5 l3 W
1 E7 N; [* G9 y
set trade-record-current []
4 k5 h% M# n6 c: }% ~set credibility-receive []
3 Y# O% I! g! b9 g! ~0 Wset local-reputation 0.5
& K4 m9 X6 C( ^( l; Cset neighbor-total 0* X" H6 F7 v3 R( _" E; {
set trade-times-total 0
1 b  ~, t1 \  P+ i/ [/ Lset trade-money-total 0- M0 `. h3 U$ ?, {2 a$ `+ L" V# Z2 @
set customer nobody
6 c4 q2 ]. C7 g4 ~' ^' N5 Nset credibility-all n-values people [creat-credibility]# R' `$ z; ~/ a% R$ t1 W9 P: ^
set credibility n-values people [-1]
2 L# O* D4 A8 ^9 F) Eget-color
0 ^! y7 C8 w( k0 W$ z* c! L! M
4 F1 W& v# Y3 {
end
& p* I* L/ K8 Q! L8 `0 Y
# ~8 Z+ S+ F5 {" K" Bto-report creat-credibility9 [8 w; e- Y. r, q% B
report n-values people [0.5]( T" ]$ `5 ^1 O) Z1 ?
end
/ `: K$ u  ?' F8 m3 J- W. T# P2 e, J% Z; w) c" b
to setup-plots# l7 x$ \' ]- A1 Z

1 N; z* M& T1 Aset xmax 30

/ E- J/ Z5 n  h  y2 w5 L
7 l" k6 T8 u" jset ymax 1.0

: o" N' v7 [9 i! p& E) G
& n6 d0 u8 y/ nclear-all-plots
4 _* C( j1 h' t# a# O8 @
/ g; C7 D& @6 M% ?; x1 A; d- j
setup-plot1
* C& ]2 c# B7 R0 ?2 {
' H6 w2 a# p1 H4 q* b
setup-plot2

1 N9 @- Z( j& X
" J& Y* T- n, tsetup-plot3

! i" h+ `5 z: K- L7 o+ a9 f# Wend
2 I. C/ ~& x2 c8 G: p
* Y* ^0 ^0 q+ v& N3 M1 u9 W% };;run time procedures6 \" y/ V% E; ]5 b. e
$ X# `3 a" L* k7 [
to go, F5 w. ?7 {7 v+ a3 r
: L1 f7 f: Y+ p
ask turtles [do-business]
" o% b; s  H+ d$ ^* ~
end: K* d& a7 E0 Q; p! F

  I7 ]; A' N8 T4 U+ C9 Wto do-business 7 L) o! Z/ z- }( I

: h# S5 V1 @1 e! `5 |& F9 o) X# k2 r: Q0 E; E
rt random 360

4 d1 c. O% p7 |0 d, `9 \7 l5 m; U" A. Y
fd 1
2 O$ G: K& |: a- e/ j& c" W
2 k# Y6 R3 H# s( r% w- ~
ifelse(other turtles-here != nobody)[
9 }; W0 N! L5 F" X6 E, z
% O9 D8 ]3 R3 ?" a# |, U5 F4 |
set customer one-of other turtles-here

9 Z: f2 L5 z! s* d2 w6 k1 O" y1 N5 k) K
;; set [customer] of customer myself
( Q7 C- u8 F& i( G8 w

/ m$ E; K) n! P5 _set [trade-record-one] of self item (([who] of customer) - 1)
% x5 [2 o- i9 `7 Q, F[trade-record-all]of self
2 ?# P; z$ I& `' _6 X: \;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
3 B/ U: g7 X5 h7 _7 ~: u
  _* X' @. A$ U2 F+ q! B
set [trade-record-one] of customer item (([who] of self) - 1)
  _, i$ M0 W9 A" H' U[trade-record-all]of customer
& t" \5 z+ ~- i' W9 W

, N7 ?' v" R. }; fset [trade-record-one-len] of self length [trade-record-one] of self
; D2 t9 V( e+ [5 P6 c- E. T

0 C, P9 _# P7 A$ W1 |set trade-record-current( list (timer) (random money-upper-limit))

9 p7 ]3 `" ^! z  U" I5 b. T1 C: t! j' ?- N
ask self [do-trust]
4 m$ Y5 m) t$ X( _; a- u;;
先求ij的信任度) h. J8 A5 `6 ?% p( S) M4 Y
4 A0 _2 R2 c2 e6 U# e' K1 B
if ([trust-ok] of self)+ o/ |- @9 X7 P: n% h' u( D+ J
;;
根据ij的信任度来决定是否与j进行交易[
5 _2 S4 A, j' B$ K& C2 E- _* ]ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself3 x$ p- u3 H3 I6 |+ h
; A" B# Z0 h  t% s' i
[

* v: f( r# b; m4 y
  g* P, Y, \7 t$ \do-trade
" z7 a7 E- W, w- w0 L5 l

% K! f7 y4 J* V5 rupdate-credibility-ijl
# J* i/ W* z( \6 ~! ?2 j

+ _" g. |" `. |0 a. R1 @- R& Dupdate-credibility-list
9 L5 u- i% s  v
/ n' F2 B0 H; Y
  B* M9 V" {; t
update-global-reputation-list

/ B+ E* u3 z- z( ?7 U; G# }  r: s. h& k2 ~) ]4 w
poll-class
' V. U8 G* a% m

$ |& @& E5 i9 ]% H9 }get-color

$ k8 }+ l  p' {& x
% y: `* d" {& z. ]7 o" O& H9 P]]
9 o" E, b$ H+ Z( q- E# u6 A) C7 A3 R: i' g  {
;;
如果所得的信任度满足条件,则进行交易
% a, J$ c# k1 x0 _. z8 E9 N  I- H7 t. I6 z) ^7 [1 H
[

& u- Q0 p& N  |3 c9 ~3 h
/ @  ^( u& a! T' h0 O& Wrt random 360
* T; l" z" Z/ J( E7 h& G
1 K& `! @  }- f' ^' ?6 x4 W! n
fd 1
* h& g: F! Y0 W
0 [3 X3 u% s* T) V
]
! P: {2 ~! C0 G+ Z. T
$ V2 g' q# H2 l( r5 {
end

" W4 d* P' V& v: w7 _, T# y: N
7 }0 `; w$ K: V7 x$ ]" s! P, lto do-trust
9 Y( W( w2 p2 q$ c# b) ~6 ^set trust-ok False
2 d3 y! ~# F  F  u- B# D
7 f  [" @6 @6 G  k! X( t( S! K
' k6 _( X/ }8 |: D: R" f
let max-trade-times 0
4 ~2 Y. X& {7 _$ Pforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]. u- h2 q" e8 G7 S6 K! i
let max-trade-money 0* g* e" ^1 Z& g1 [. f( c
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
$ |5 |& v( n. k& a2 B! K2 dlet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
2 y8 K  M& E+ B( B  ^) R' S7 `8 S
2 [0 f9 c9 d+ J

' X! b6 N( J4 wget-global-proportion" N( e2 W2 X/ N' g1 N
let trust-value
; _9 P. A! x7 t# G) plocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
, V+ `5 ?4 s7 ^- ]+ [. S
if(trust-value > trade-trust-value), z( ^2 n  B7 Z" |3 I$ B' X! }* Q
[set trust-ok true]  {+ C$ p7 S- l; M2 a/ E' d, C
end3 m9 w% x% j& v& `8 j5 M

* D  @# _; x$ f6 L/ ~4 M) kto get-global-proportion
$ [/ ?/ o( h: Vifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
  ?( u7 z( B; L( h# ?7 M[set global-proportion 0]
9 `1 }/ A- l0 u& R/ q[let i 0
; M% N& u1 E3 ]: N( w- @8 p" ^7 _let sum-money 0
: u8 \5 D+ b2 Z' T7 q$ E( g+ V4 Mwhile[ i < people]6 h" y, r+ g. f* q
[
/ f9 ]% O& d2 Q" P' Rif( length (item i
# C* q- t0 I7 a  f. `, X: i[trade-record-all] of customer) > 3 )

, B: x, W, ~+ ~  s[4 y! g4 F% h  a+ b- i
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))& ?; d" I* O7 M# I/ |# z6 c3 w
]
9 B+ B. C8 x6 ^]
( S+ \5 {0 Z( y0 Q  Mlet j 0
8 Q2 s- x" O3 i6 Xlet note 0
/ b. f, V3 `8 r+ q8 Q! Wwhile[ j < people]4 Z& `# q0 |( H8 Y& M
[
* Q( N, `6 r# V: b2 [if( length (item i$ D2 H% g1 V- ^: u
[trade-record-all] of customer) > 3 )

/ G1 Y" }+ a/ O) b[
& H0 Q8 \0 x+ v+ r6 l. A3 j. U3 Difelse(item ([who]of myself - 1) [credibility] of turtle j != -1). [& P: `+ a7 W) s: O
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
3 G( a" f- D6 F/ i7 Z[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
# t% Z, ^. f" ]]
6 q8 K% N/ Y9 W( o' I7 H]
6 z3 W( n1 D* S% F, y0 zset global-proportion note
! Q5 a( _# K6 M' _: S; G]
8 s5 r2 N( t- ~! }end% E) K' i$ ]5 a
/ X. \3 o* r8 X$ Y
to do-trade3 C0 D: I. K6 j
;;
这个过程实际上是给双方作出评价的过程
# }4 S, ]6 j" B% Zset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
) [$ j0 x4 |1 |, K$ D4 mset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
) j) Z1 a7 q" x2 A/ z* K9 V) rset trade-record-current lput(timer) trade-record-current
" T; E6 n* b3 ^- F' \* U;;
评价时间  I. K% u1 u- q- M4 q
ask myself [
0 `4 u0 _# `* H3 s' y  P2 ?update-local-reputation# g7 @+ x% G* [# C  H# U, `/ Y+ T
set trade-record-current lput([local-reputation] of myself) trade-record-current$ C7 l, |( v$ z+ j1 o$ c4 w
]. |! o8 ~4 M& }4 a& J3 P6 R6 X, X
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself- `/ s% R' Z2 b6 ]3 _+ I
;;
将此次交易的记录加入到trade-record-one
) ?3 [9 W) q3 |+ Y* dset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)" B2 b& \: f( Z0 _) o* K3 ^3 x8 ?4 f8 U
let note (item 2 trade-record-current )5 U; F" s. g" L" Q
set trade-record-current
% w( G8 M0 E3 k; ^1 h0 p/ A(replace-item 2 trade-record-current (item 3 trade-record-current))
* m" L- ?1 ?9 o; p1 J- N0 s5 |
set trade-record-current- v4 ~; J0 W0 f/ ]' I3 N
(replace-item 3 trade-record-current note)
/ a- ~) S- }  l* c* D" V- Y7 o
( q3 K; t7 v4 e: `- {! F

; W$ c7 f$ |7 f1 p/ d) Eask customer [
- }8 P9 X" l! H, I+ rupdate-local-reputation  W6 I1 f: j$ c# b. U
set trade-record-current' |0 y" g+ @3 [% V, \
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

- R0 \) C) p3 U7 A]9 ?% L2 L- _5 C% e. G9 a
$ U8 z0 e& {# y2 T# Z' g, S+ _
' x' P, ]% [2 U% r9 ~
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
3 J% A' n  r( W8 k- }% B% e
' h1 a0 H  [+ l
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))" K+ X' W- D. P
;;
将此次交易的记录加入到customertrade-record-all% t" ~0 W( U# \6 ^  n
end5 a$ G9 S' r% U- m6 ]( k

( l) @" y2 I5 w' f2 o: o, i; m% x) fto update-local-reputation
7 b; ]4 f; M& e& I; aset [trade-record-one-len] of myself length [trade-record-one] of myself( v( k; J7 H4 P6 M/ d: _

) _( x; l# z2 j0 T' C, P/ J
  H6 C( a3 }* j- a;;if [trade-record-one-len] of myself > 3

1 ]7 z$ X5 g( wupdate-neighbor-total
9 u: n4 t4 b4 v( o6 d; e;;
更新邻居节点的数目,在此进行$ f$ F6 ^% o1 Z* g0 W
let i 3
. S. r/ x( F) _% Xlet sum-time 0
% A: W6 ?* t. ?5 U8 L8 ~while[i < [trade-record-one-len] of myself]
1 D5 r# l- j- Q[+ i" N0 u* ?+ q9 s
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )" |- J0 [9 ~& l0 y
set i+ f6 S! _$ U$ A: V7 ?9 Z7 P
( i + 1)
( B* \2 s$ j3 A' H& ~
]
# V% V5 W! i- z: E1 Tlet j 3/ f1 I) \: j! Q+ P
let sum-money 03 `0 y: Y! L* g6 x& d* F, _$ m
while[j < [trade-record-one-len] of myself]
3 |- E4 Y1 A; O, u% K* E% t[$ _. j) a$ Y! X7 \
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)$ l$ V) ]/ U, ^+ ]: m' u* J) b
set j+ p; g* j( @1 F8 `
( j + 1)

9 z4 l$ g+ G) y. U! y- []
- w. m/ p) R8 m4 rlet k 3- Z  t4 I* A1 g5 \0 V! E) [
let power 01 W7 N7 ^7 v; v& Q
let local 0
# g* L" b" M, R: |* dwhile [k <[trade-record-one-len] of myself]2 {. a5 W5 ]3 R/ t0 C8 u
[
. ^- V2 V  h. ^* Y) j( _- Oset 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) + h8 t3 a' P/ j- a5 O
set k (k + 1)- H& c: W+ T, b% @. W
]
& {/ U4 X; p, E( F9 Q( ^set [local-reputation] of myself (local)+ ^/ ~8 _: o8 A  |
end( l/ D& Q6 z5 w0 a& A
' H7 T# {9 |. s. L7 |5 w
to update-neighbor-total% a( C( t, f% B
0 M6 Y: U, N9 s( ^4 k
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]% E5 }$ T- v( Z0 d9 h0 X, l

' S3 x! l% A' E: Z2 B
2 g/ j" R+ D' B5 ]4 @4 b
end) `" L3 o4 d" C8 }) D2 m$ O

0 m2 O- P+ o  E- x7 m9 {2 zto update-credibility-ijl ( F- m3 e; P& M* `9 s

  x* [. K, U0 P$ C, w;;
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。
+ j* }& e1 e- I  a, elet l 0& x1 d9 z) K* M( Q# j
while[ l < people ]
  C5 l+ ?2 ^: W. i;;
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 K8 s7 v  H# z0 a* g6 ]
[+ t9 y5 X) S& |/ v: T
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)* \' ?* j' W0 o+ U7 m# K8 \( v) Y' O
if (trade-record-one-j-l-len > 3)
! T  Q! Q, i5 h0 y[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-one5 i$ E8 q5 D# Y& r  l4 L
let i 3
8 Y0 ^  N" |% t) d& a% J, Hlet sum-time 0
3 {* {8 M% h; J+ b0 W6 _; @while[i < trade-record-one-len]; C$ Q& J" ]* V; n8 U6 x/ v" m
[
/ C7 s8 d; W- F: R- z* B3 cset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
& [  u3 ]# `: g0 H1 Cset i
2 e  Z( Y* }1 q* r8 F7 d( i + 1)
* P9 r- r. `  O/ Z! V
]2 C8 L2 @8 n& w+ N
let credibility-i-j-l 0
: S  Y+ B' ~0 c, g1 D;;i
评价(jjl的评价)
' v9 g# h7 W- A: ?; d" ]' M$ Q! mlet j 38 x+ N8 i6 ^, {5 u' s
let k 4
# f& [- x! ]' @3 fwhile[j < trade-record-one-len]8 Z2 p! O# ~- w) O. L4 e! E
[) D* y% `1 \2 M$ j& t) `
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: z6 m9 S; J7 L% X/ j0 S
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)
/ j: ]" Z' L. a8 D) Jset j/ Z( k3 n% u- N
( j + 1)
7 F; @; T, I# S% ^( v% r. a/ C+ J9 K
]2 y3 H! j- g$ H; o# G  J
set [credibility-all] of turtle l (replace-item ([who] of myself - 1)([credibility-all] of turtle l)(replace-item ([who] of customer - 1) (item ([who] of myself - 1) [credibility-all] of turtle l) credibility-i-j-l ))
1 _+ \; r  S  i+ u/ N
/ W) W" v" U- z

4 Z; Y$ V+ ~6 J# wlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))  \' g4 k! W9 [/ e5 Q1 [
;;
及时更新il的评价质量的评价
" p' B7 E) d* b0 n- Eset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
# _+ r6 V" n, a# I0 j$ ~- s' [/ V1 nset l (l + 1)
3 x/ N- W2 u7 O, s2 `]/ i( ~$ d+ @+ P, q* B& o1 w
end
8 w; u! }7 {0 Z4 z  j3 s
4 E& U5 q+ a! F1 qto update-credibility-list
; @! J& d% y0 K* F; R- ^let i 0
- B, v( U5 A9 e7 _+ Ewhile[i < people]; d, J+ @6 s4 K  K
[$ D" V' |, Z. p5 M+ E5 N  w
let j 0; V0 K9 z3 \* o, b8 V
let note 0
2 p; E! h! F; B9 Q5 N1 }let k 0  v* e% e) X3 Y, |* E1 F( U0 e- o
;;
计作出过评价的邻居节点的数目
+ u" O( B" H' w( wwhile[j < people]
7 l) a- \. D5 }: l% X[6 {$ l+ s3 \, X  v, T5 }0 x3 W% ~- M
if (item j( [credibility] of turtle (i + 1)) != -1)
' C8 ?- {" @$ y. ^) p) X;;
判断是否给本turtle的评价质量做出过评价的节点
# {0 P5 J2 f8 h, [; j3 ?3 D  W[set note (note + item j ([credibility]of turtle (i + 1)))
' z: f# v' p' L9 F;;*(exp (-(people - 2)))/(people - 2))]
. E+ P* a) @/ K/ H9 j7 K
set k (k + 1)
6 V# R4 `# C- f: ~" p$ e8 r# q]& {1 F# u' C; B7 l1 i, z3 t
set j (j + 1). n; d9 N$ a! c& Q# R: e! a% E
]4 I0 I# ?+ u; b! L& l
set note (note *(exp (- (1 / k)))/ k)
. `4 `8 a2 D5 L8 Wset credibility-list (replace-item i credibility-list note)' c. T6 N* T  G  b, a) Q, k
set i (i + 1)
  |6 j6 C9 W4 L! w: ?- r: T7 @]
7 u* N1 e, f$ U& g. A0 yend  ]( u' c+ t1 ?9 @
" z1 P4 P) {/ s" {& B  P7 b1 ?
to update-global-reputation-list
/ g; k& Z3 j4 P$ `/ ]let j 0
/ m' e4 d/ C! w4 g2 o2 Bwhile[j < people]
, p. N8 D" y2 t! m1 B. {[
6 \. y; J0 r9 w: x5 T8 ?let new 0( B# C( m$ }# j8 H) J  L
;;
暂存新的一个全局声誉
# j9 w# H# d" N! s0 L3 d: T" g* ?+ Klet i 0
/ [; g/ ?6 |  m  N" r" _6 ]0 {let sum-money 0
6 ~2 Q% N3 r; |% x* M; Qlet credibility-money 0( o, W) D9 O8 ~* s  ?
while [i < people]
7 Q& A; D  `# p0 f$ s[
" B5 h& {, h2 k( [set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
6 r& k5 Z- @7 A( Mset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
% o' D) ], ~7 v% r, z8 Sset i (i + 1)
- r6 T" G- s$ r: ~+ ]1 D2 |: Q]& B2 b4 X  |$ Y3 f" ^% K# x  d
let k 0
  Z7 F0 P3 W6 p8 D( }" O3 ^let new1 04 s# y2 ^. {0 ]
while [k < people]
8 t( ?! F+ \6 J' D[3 V- k1 I- }! u$ H% z) Z
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)2 j  u! S; {2 T. H0 r3 }
set k (k + 1)
! e* u$ e! M; _) N7 C- w/ ^9 c0 F]
* E  U5 n" q, g$ u+ s' Zset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
7 K& O) D% h4 N! [% U3 w1 Zset global-reputation-list (replace-item j global-reputation-list new)( |8 G4 B5 p. ^: E
set j (j + 1)
- k% k; l6 ^& X]
7 r+ f+ C( p  Q7 d# ?/ d+ U: Z9 Yend* O& c3 l" @$ |& G1 Z; q
6 b) M2 ?4 }2 Q8 T0 L
9 ]; r. k$ j1 N: t

0 k, _9 r8 Z  {to get-color) ], u" O  Q0 a- p) {1 r: z2 z) j( K
& B( p8 n( I3 @1 a. l, l3 f1 q
set color blue

. u! h* }$ U0 p# j: W* f3 l" eend
& G$ z) M) d4 C' c+ e
* {/ i8 o9 L( @  Qto poll-class
9 S# ~5 ?7 V) \' qend: ]6 n* x7 n5 O" `
; P0 f- b1 d6 r* {) w
to setup-plot16 q5 y( Y& e( ]3 g
# s7 K  ^. |; }" O
set-current-plot "Trends-of-Local-reputation"

# ^. Y5 L+ ^) R/ i1 `8 ~" i" ]3 [8 H; r  U; g
set-plot-x-range 0 xmax

6 N1 Z2 O3 H4 \
/ b; u# j- C. S( z/ w& F- wset-plot-y-range 0.0 ymax
6 g0 t& P* }% t" W8 a- ^
end# z8 n7 Q+ C0 p- b% _
7 N/ e. A: [+ {* M9 }! y! U
to setup-plot2
% T' ?  ~1 M" `- d1 q8 u/ M' c4 z6 G& Z& o. J" R
set-current-plot "Trends-of-global-reputation"
- L3 Y# y, _0 k

# S% P3 z  a- ]! V5 Yset-plot-x-range 0 xmax

! q$ @# T* k  c
0 P, K6 T4 A& v$ v) {/ O" Q; D! ?set-plot-y-range 0.0 ymax
7 Q. S$ F, F% U2 {
end: ?1 U( h5 [$ v7 {) ?
) ^/ e$ I' n4 f! [8 }7 G0 P/ {5 B
to setup-plot3
  |0 A5 r& `9 Z% d6 [( y( g! ~% U% @1 I- p+ I
set-current-plot "Trends-of-credibility"
$ {- j' x* W! p5 A( }4 q1 ^7 i

, Y, o2 K- D: ], N  Y) oset-plot-x-range 0 xmax

6 x$ O' Q. F. b9 M* ~- ^; b9 l( |0 O
set-plot-y-range 0.0 ymax
# C" X; P: E! i2 M2 ~! q+ ~9 T
end
" k' P$ t$ b  F* L2 B+ _2 B: y/ W7 R! |$ k$ D
to do-plots% a  g0 J, G9 ?: j
set-current-plot "Trends-of-Local-reputation"1 Y) C. B4 @! {: |; T
set-current-plot-pen "Honest service"
8 @* S* r- y% cend& X8 o9 u/ W& ?7 w
) g7 {; m  e3 _; o0 I9 {
[ 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.
/ {% E  j5 O+ n
" o9 L# E/ Y3 u! Z, Z/ E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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