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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:1 M/ L/ m) E7 D; u
to do-business
+ K; f# m- i- f5 I7 u rt random 360) E7 ^$ V% X: L; a$ u# t; y
fd 1
" U/ v5 L0 F3 l( `  u ifelse(other turtles-here != nobody)[
$ N& M( I0 F! p! 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.$ w7 k% e; [: h* R( ?; a, E
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
5 A6 K+ g# F0 D+ i$ S   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
6 A6 f9 D9 l' B* o4 D$ G   set [trade-record-one-len] of self length [trade-record-one] of self' Y) t7 ^7 n7 y2 C
   set trade-record-current( list (timer) (random money-upper-limit))9 e; c2 w. t( P* _  x4 p# Y& B
' ?' f# d) z4 [' k
问题的提示如下:
5 t, f! H- {0 l  p. A! y3 B$ M  @; @0 E0 z( M$ O
error while turtle 50 running OF in procedure DO-BUSINESS: C, M( O8 r# d+ J, S" Q2 @1 n# S
  called by procedure GO: P: S) {2 d% Y* y- E" _
OF expected input to be a turtle agentset or turtle but got NOBODY instead.- P: J, j. F/ W/ i
(halted running of go)
+ n# n1 J8 ~; e( M6 ]- d
- t9 @4 u) I; 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~~
, f" e5 }4 f: P" i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
8 M# z0 f' Z- {9 l: ^globals[
4 ?% d9 w3 ]7 W& @xmax
6 h$ }, \: j. j" G  Q' X; f! u# qymax
$ c# o8 s  }5 xglobal-reputation-list
8 W  K, p7 p4 F7 `
' x* X0 G! o. L- r;;
每一个turtle的全局声誉都存在此LIST
/ W2 z6 a, a! U1 B, g$ n2 zcredibility-list
$ |5 f2 ^4 C) g  u0 g- t;;
每一个turtle的评价可信度
' Z" F2 m+ ]" H# U2 }6 Ohonest-service/ \8 K* A  P9 Y+ ?; k
unhonest-service$ S" C, A, ?" K
oscillation
5 }/ n% c. f9 }+ X( Z1 Hrand-dynamic* |4 a( M" w* z: o2 J
]% P- t, u* m6 ]; S+ }5 j* G6 d( j

2 v2 F5 B% X# E( Fturtles-own[
' V$ l6 _/ c! j6 Y. Ztrade-record-all6 y& x# t' U3 D/ N
;;a list of lists,
trade-record-one组成
3 k2 N2 \! o4 Y, ltrade-record-one8 y5 b+ f( U0 h; a2 |# n- r
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录1 E4 C2 v& A) S! B/ r8 w. K

" o0 ~5 F" ]% N, v# y) t) u( Z7 q;;[
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]]
4 g7 Q7 \5 _) C# o1 p' Gtrade-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]3 e' m8 q6 t" `! ]' Y& G6 Z# X
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list3 T. F3 @4 j: t3 @/ c* Y; ]
neighbor-total5 J6 i* H0 t7 m  O" e
;;
记录该turtle的邻居节点的数目$ h6 C  m2 C1 f
trade-time
# P$ `" v3 Z4 s! d2 l9 @4 X" R9 c;;
当前发生交易的turtle的交易时间
5 U  K6 k  q% K4 wappraise-give% J2 u; u9 Z- T. w, C
;;
当前发生交易时给出的评价
, G$ J- m$ Y1 Y" h# `appraise-receive
! `( G" n/ W) S1 P; c;;
当前发生交易时收到的评价
  m7 v2 m# h: b9 s5 U4 happraise-time
( U. M1 f# Y# u- E/ b;;
当前发生交易时的评价时间
  _: {8 ?7 p  S3 B  x4 u( E% u1 clocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
; ^$ C4 y  m! w- otrade-times-total
: @/ o0 t; w  S( X;;
与当前turtle的交易总次数6 j0 N* ~1 x! \- ~4 i' u) q; F
trade-money-total* i+ B8 o2 u. s% B. p0 @
;;
与当前turtle的交易总金额
" y; [( g( K# ~7 A, h& ^local-reputation2 R' x* l0 }5 g3 M, y- W9 K6 S7 j/ o
global-reputation
# i! s6 N& k* u" }9 m/ y$ Ycredibility6 r/ O/ s' n7 k. x+ K/ N: a& K
;;
评价可信度,每次交易后都需要更新3 D  ]' p! \+ ]
credibility-all
, U. k/ w$ t5 v: \;;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5 ^7 ?) A5 E# E/ v0 A- X
$ V$ v" W, |: I& b
;;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) m6 n; d0 E) E/ W: v
credibility-one" s4 v- N! X+ N' ?, e; p" q) e$ c
;;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people6 H1 O( R& v5 w/ I$ P
global-proportion/ }8 I/ L/ M7 p" h, \
customer
1 J! h$ \3 `9 [3 n5 I' F  ~customer-no
0 p6 ?$ k/ ?6 X. c6 xtrust-ok
4 I/ a& C, C" c# ~trade-record-one-len;;trade-record-one的长度
3 i9 C, y! N$ Q% W$ a! V2 X- f]: P. T8 \+ V5 R1 ], k
( C5 c+ e% U" {4 i) w/ k
;;setup procedure
& H$ i5 u8 k# ]& q' F$ K, \5 g$ V$ u6 P0 i* v" z
to setup2 R8 h$ C. ~" z5 x6 D$ ]
* M7 W; @7 Q1 e
ca

( T4 |: E# o( p$ t& x  T4 ]- |' @- l# ]/ Z* r" u! h  X* E
initialize-settings
8 V2 S  \! v7 Q: @2 @# a* ^

: }& h8 W- {% C5 G9 U* |; r: ycrt people [setup-turtles]

/ o2 u+ x" E& L5 U' m
0 P9 m  z' H) n! {* b  l* B; H  Treset-timer
6 ]! E& o( u" b, q+ L- m+ t( F
, S+ D& C8 E8 H2 ?$ O
poll-class
- }; g2 o# b. n( l: @
8 [3 W" Q5 k/ [0 L' _$ e) w5 z- T- L
setup-plots

& N/ K: L/ e8 B9 |; J8 |1 {
7 |$ `' a$ h" f1 A! }- S5 m4 |do-plots

! A8 A" W$ o' {% R6 @" w6 }end& c7 @" q  x6 n& p0 @3 k

: t" [1 L8 h( I8 u) \to initialize-settings. k. D- H7 P9 m; {& e
8 N" V; [+ s" L- w1 J, H
set global-reputation-list []
0 W1 z8 z0 w, p+ `* @
1 e: D; P: u2 P* c
set credibility-list n-values people [0.5]

' }4 i5 E8 h$ ^4 O$ ]2 X8 U/ f
set honest-service 0

. G; I: F, W1 @' a! K) a" \% [7 A7 \* S& g  C6 U5 {0 b7 g
set unhonest-service 0
5 s7 K6 i2 n3 {3 z+ a

* a" ^8 m- l3 G( B, R9 Wset oscillation 0
& R: q9 |$ r$ t. a( |: G) W, o

1 Q) F9 F( D/ k  |; k% b4 U& n9 ]$ B/ Qset rand-dynamic 0

0 S8 _5 b/ d+ Eend
% {# f: q' \& d9 A( U8 H5 C$ Y0 d; f9 c
to setup-turtles
) b7 L* ~6 `5 H4 l0 U1 C( W! Nset shape "person"' ?) v* S! l! T/ u' F7 u/ }/ e+ z
setxy random-xcor random-ycor
( @% T3 {# Z0 x. [1 ]- @4 e2 D. aset trade-record-one []
; v9 X0 s" i5 j& _& w8 R) ^1 ~# {
$ x( T7 M% K. D7 O  K1 D) T
set trade-record-all n-values people [(list (? + 1) 0 0)] 7 G+ d8 @$ r/ I

  x) }: D; V' E5 Q/ ^" D6 {' rset trade-record-current []
% e0 |& {* [5 _) j2 l5 [set credibility-receive []
, g6 P# M( A: ]; S& Hset local-reputation 0.5: e" t8 T. U% q  z& }% M  w6 K$ x
set neighbor-total 0- G2 s6 Q7 _4 [6 e+ P' n
set trade-times-total 0
; E. k( q/ ~( p+ \( V8 k/ bset trade-money-total 0( j" i3 w+ J6 j' ^, f
set customer nobody
. p6 r' v1 s+ R7 Q' ?5 D  lset credibility-all n-values people [creat-credibility]
5 M0 d: o8 I! H* W/ i7 Cset credibility n-values people [-1]
/ {2 P7 C7 f) p, H  Pget-color* L$ d/ s4 f' P

5 H$ `* L( V# N& p9 k$ R0 Mend) K# z5 @0 a- P$ S; Y: k( h0 s

- n" [2 a! k7 |9 h; f. kto-report creat-credibility' r7 T) _- j5 Q4 c$ e5 S7 _4 B
report n-values people [0.5]" c- Q+ p6 o- \" O/ j! l
end
, R+ u. ^2 v% f4 e, i. B3 M& i
3 N; n2 n2 j3 y! u% [to setup-plots
; Q0 S& R7 \$ G% d  ~# `
# X8 }2 C1 Z: [* o$ T  t) Eset xmax 30

3 a; S2 i1 w" Q: b5 R0 S
+ k& M! l: I- Q4 Y  @1 ?set ymax 1.0

3 ?* @1 y, g" m+ A  J: a/ ^  Q/ t  D+ Q. r: w
clear-all-plots

$ I% m' c. E0 M* g# T7 `  k# C8 i$ d
. R9 L2 V- [, Vsetup-plot1

) q6 Q3 s/ Y1 |
8 K8 N: }9 z3 }$ b/ H& Y6 Esetup-plot2

4 l6 V* h1 k% t+ E- h' L% i7 S# n/ O( G
setup-plot3

& S+ G$ K9 ~$ X/ Dend4 a, G1 ?) P* v' ]

: ]4 q6 d# `3 S" y# H' @* p5 B;;run time procedures
* H- e1 C6 e; v2 B( N) ~: Y/ ]  M2 ]6 w5 l$ R6 a6 b4 `! r, a4 g
to go
" N) F9 _% O- T3 @9 g+ I, z
( b5 ]9 T. @1 A' d( K& L6 g, Bask turtles [do-business]

' _% \% c1 m8 B. Xend) \; |; X5 [) L, l& m

6 k& A+ X8 h( ~* D% mto do-business
% @  ]( G% ^: C. h
* m2 j0 B& O1 ^! I

( j/ Q: U1 f& L% {rt random 360
: r  E/ O  u9 r% L; O, `

' o9 b5 A& E/ |7 {fd 1

; }4 {/ U$ b+ o  E: F7 E3 m. ^; W* z5 \4 W6 T
ifelse(other turtles-here != nobody)[

2 F% _2 @  x5 ^
4 m# O- \& z  }1 Wset customer one-of other turtles-here
  l9 Z0 |! x; W8 s' n6 E4 w
  w$ t9 l  N$ e: G
;; set [customer] of customer myself
  v# H6 K7 v0 p" Q: P0 j; B
& u; T6 {0 U4 _3 H5 ?' J
set [trade-record-one] of self item (([who] of customer) - 1)9 A) p: R- b, L1 ?
[trade-record-all]of self
8 v0 U3 K+ D- I/ A;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

! r% E7 }% c; B  k$ }2 B3 x
$ @& b# \1 F2 b5 eset [trade-record-one] of customer item (([who] of self) - 1)
0 J2 K( i6 i6 e4 W9 k% K[trade-record-all]of customer
1 ~; W6 a1 `8 m+ h6 n

; q- r6 c" e+ E- C8 Yset [trade-record-one-len] of self length [trade-record-one] of self

# W! u  ?; D& m7 P  B5 S& ?; ^- `6 R% |5 g" c2 i
set trade-record-current( list (timer) (random money-upper-limit))

  B9 W7 I! w+ F0 c* {5 v" b, S5 z8 O
# ~9 ~6 @+ r# U/ cask self [do-trust]3 r* U+ x/ T! j' S  Z) c) `; q
;;
先求ij的信任度, [1 u! O  P2 Z5 O9 e0 x

2 G  c5 I/ ]3 {if ([trust-ok] of self)
1 G$ a/ @7 c/ f+ \;;
根据ij的信任度来决定是否与j进行交易[
* F4 S' S( @, z! oask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
9 H9 G3 h( S7 \/ Y
$ C0 _/ _" P5 g" Y. p: Q[
# j  p, t/ Z- ]4 q7 t8 G1 p! X: K

. e- u; ?# Q+ b% E! k9 Y* ~0 sdo-trade

9 ~& s6 E0 x. c
9 B- s4 A, @- i9 `9 d( H) ~+ A3 vupdate-credibility-ijl

0 |; c* s/ F8 e; z* F
. ~2 E# x0 T% X- y! Tupdate-credibility-list
7 t! k3 J. j1 s3 N; M0 J. O- d
* z0 Q- a5 k9 h$ r
, G: k# t" M( ]
update-global-reputation-list
0 B$ W, d  D6 m) U4 P$ q
9 `- p. L7 I; e
poll-class

  X- e" r8 [- E5 h/ _+ \
7 O9 n) H9 S( S  Oget-color
( J! f" v( E0 v  r5 D, I' h

5 @2 I, I6 [% I- {$ \]]( w. v0 j) O9 r0 `
: P9 s' f3 v; @
;;
如果所得的信任度满足条件,则进行交易
  m4 v6 L7 c- x  _% _  w- I+ `$ ~3 M' u4 s9 z
[

) @8 k6 G& s6 S( t" M' X! I5 N" C; I/ G+ E
rt random 360

  K' k9 M. j( V4 b( |( ?2 n" x+ h4 k, w6 i+ I! j" V1 o
fd 1

4 ]& Y* Z% N9 e% d& s- f( _" E- a+ A4 h" A* p
]

9 e) d) @5 D* O/ F4 e" z
' r1 \0 S. T3 ]* |0 Xend
0 O* M0 ?' w/ ^' _- ], m% M

* {9 |! {5 Z( ?! M/ c- T( {+ x4 dto do-trust % |. C  c( @) G
set trust-ok False
2 H* C5 d7 h$ x, c% @9 o. m& M: P3 B- f) M5 ?$ k0 S
7 D- I5 A: g2 X  h1 t4 O8 E
let max-trade-times 0/ b' m3 V1 X. n# t  n
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
* _3 q7 X* E  ^1 \7 glet max-trade-money 0$ o( o% r  T, w: f
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]; ^. p1 Q+ e! V$ O1 i* l2 R5 J
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))# P# ?( U: P7 h0 Z3 K

6 y* c$ `- T$ X$ D+ T

8 O* P- s  E" [+ N0 H8 Qget-global-proportion
% l" q4 ]& x2 t: X5 qlet trust-value) l# }* C+ {: W8 ]7 }( f
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)
6 B5 p) E# F& _; Y5 l: z5 b5 R
if(trust-value > trade-trust-value)5 ~. {7 I& W4 j9 Y  g; \( c
[set trust-ok true]% J, _  w! {2 |6 H4 F  j+ Q6 v8 t
end
( `  ^& M/ H, E" }8 q- y" a
0 Y/ t# ^6 M8 ?7 s. O2 F# b2 I+ nto get-global-proportion* W/ m7 d& b7 ~0 S
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
( J5 v! L) _" X) ^' t/ Y/ S  a! T[set global-proportion 0]! k  N, X9 G* Q: I
[let i 00 I# `3 x7 h, v( j* l. @
let sum-money 0
* \  ~9 ~4 A8 e. Vwhile[ i < people]
' C% d- T/ n9 ]$ W/ j0 t& p[  W7 g' l, _+ p- D4 B
if( length (item i
. y2 C1 R5 N( B[trade-record-all] of customer) > 3 )
$ h: @! r' r4 l$ V
[3 A8 q& E. c6 V  S9 T  s% K' ]
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
9 v- ]0 D3 v7 W]5 ?2 l+ D; y9 @; W9 }3 o4 J
]
" f7 H. p6 C% C9 V! k6 {let j 06 f- o! I: D1 Y1 Q% U
let note 07 O+ E( m- a9 B+ B& B
while[ j < people]
- b1 _0 c* _, O; ~; J  O; W  F[" p2 V4 }5 G3 e. \
if( length (item i1 x& I0 d3 N, L. I# t) j
[trade-record-all] of customer) > 3 )

8 O0 N2 e2 G- U6 z" e, ?7 P/ ][- p  R8 G+ b' e, f9 [6 S# o  I. Q
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
/ t* i5 K2 ]7 T4 p' r[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]2 r9 z$ t3 g! D0 v! a
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]- Z4 B! c' R* _/ n: I9 b( m
]/ A; A/ j* H% k
]
$ n1 u0 e2 a7 v' h) A/ y. |, K, Uset global-proportion note
  X! T: n9 l6 u% f( Z]
* z" Y) [# r% B3 r/ dend' B. p3 Y0 L4 H
% A& |/ y1 z( f
to do-trade# J  p1 D1 I* ]( s
;;
这个过程实际上是给双方作出评价的过程0 b- h+ |8 V7 x/ N. ~' U
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
5 r+ e% ^/ d' n4 _4 v# uset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
$ r# ]: ^1 t% Qset trade-record-current lput(timer) trade-record-current: }. k% l! r0 N- \
;;
评价时间
& v7 |$ V# h( a: ?- X7 v$ task myself [
& _1 A( z1 o) }: z9 zupdate-local-reputation5 A- a& y8 T9 y* H8 S
set trade-record-current lput([local-reputation] of myself) trade-record-current; @! v6 [# J7 c1 c$ M
]& r9 r: U% E6 ^: d. s
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself4 u' B3 e1 W. |2 y5 e/ R( L
;;
将此次交易的记录加入到trade-record-one9 V) B2 w, a( Y8 M/ \' y
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself): w/ t! y& b% |* z" J; @" Q' E7 c
let note (item 2 trade-record-current )4 A9 }6 s9 }5 X
set trade-record-current
8 {4 d8 j) Q$ u(replace-item 2 trade-record-current (item 3 trade-record-current))

, `5 J- J+ a" F- [( hset trade-record-current
5 p4 u2 b/ T+ G: O7 O(replace-item 3 trade-record-current note)3 D) v  ^1 `+ A# K2 Q  h
+ a( g* ^' e6 l4 d
4 R" k2 s4 N# W& k
ask customer [3 C7 _% @7 K) T: \
update-local-reputation
8 h0 E  D1 `4 P: e  k% P  Zset trade-record-current
! ~1 P) ^2 m" M' d(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

5 k' e) d# v, v: t4 [& f- O]
; G- r+ ]' S* u% Q. E5 `* K+ [/ H& H6 b6 b, e

1 D+ p8 H5 `4 O7 aset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer  ~/ q6 n3 p4 k1 s1 g

2 S, I/ _3 M7 S  G" Dset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))( ~6 ?4 |) V0 u: [
;;
将此次交易的记录加入到customertrade-record-all( P4 E* Q8 g! A
end6 _, x0 x/ M2 }# }- _6 N
0 G" ^# ]4 v  T1 J
to update-local-reputation) \; n# ~* [3 t
set [trade-record-one-len] of myself length [trade-record-one] of myself2 m: I' u4 a. ]! y* _8 s
' q& Q! P' b: I; ?
' x% G, Y' U( z* {+ ?+ ]- B
;;if [trade-record-one-len] of myself > 3

* S' j- T9 u1 o" ]update-neighbor-total
( p9 u3 j! E# y& p1 H;;
更新邻居节点的数目,在此进行1 ^7 s* q' ^6 A) _6 U( ~  N0 s
let i 3
) F  Z, ]& q+ N; c& y: V+ Z9 V7 hlet sum-time 0
' O- o( o5 ]# o4 I2 A- Mwhile[i < [trade-record-one-len] of myself]+ i# p, C9 t- @* n/ p
[
7 E# f, F4 Q  k' T  v4 }set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )- W# n  I: p* V2 x) h
set i
4 w5 K! V+ C$ ?  E; y( i + 1)
$ v; y" ^6 Q6 n# w. n
]
0 C( T7 g' m: {9 N6 \- r! H7 Flet j 3
6 X' m8 ?3 H8 V. T9 Z  p0 A: V0 elet sum-money 02 J" a; T5 A6 ^+ O
while[j < [trade-record-one-len] of myself]
5 Y" L! q& B, g; R& G  Q1 f[! b6 g& K. L' Y( A
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)
5 y$ o/ g+ ~2 Q8 ^( pset j
, z6 N2 J( o' _  y# A( j + 1)
) F( T7 \: v' Y7 ?  i+ k
]6 }) n. Y; ^, ]; E
let k 3# j% }* y. P- M% ^. r
let power 0
7 o% u: [/ O- ~2 G) ~; c, r5 o! {let local 0
* r/ F) ], B# x) M' dwhile [k <[trade-record-one-len] of myself]0 c+ j: N) k& P* v- J+ [
[0 }) V- I9 ^- ?6 s
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) % Y6 [/ |* l& c& [  U
set k (k + 1)6 ^5 k  F% V. F; i
]; h" @$ T' }/ ^; [3 y* Y4 x) H7 W" P
set [local-reputation] of myself (local)# \  K. ]6 z& F& H
end5 T. C; w5 Q; x5 j

* H1 I1 C8 A: ~0 J- _# o2 y4 ]to update-neighbor-total
- M/ U/ l6 U, R. V/ h5 i9 S# Q* P( ^( ]2 O) U
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
" a9 `% [7 K) B0 |2 O. w% t3 f9 K$ x0 u: _1 B

, B# Z3 h9 G; s8 }% A* `3 R+ ~end
' H. S1 f' }* O$ |% ]) k2 o& `- \( @  T1 J3 w! b& a  J
to update-credibility-ijl
9 [, M9 h" S7 {- Q  L( ^0 i
3 |" T7 S( t6 r3 @; a- T;;
思路:每一次,当一个turtle发和另一个turtle成功发生交易作出了评价之后,就去搜索本次交易对象的邻居节点,对这些邻居节点的评价质量作出评价。0 v2 a9 m0 A" V
let l 0
( z  a1 b3 K6 Y4 n( \9 ?while[ l < people ]: x  a, x% b6 R8 w3 U8 U
;;
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
2 ]6 E: {' J4 [0 g! q[
1 x  J4 E- [( v' C6 g5 O. E1 {$ Clet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
+ n0 G& H( @; h% D; mif (trade-record-one-j-l-len > 3)
2 F& G* ]: x, k" D' @9 ^6 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' f+ u$ O- |* O  N6 C$ p8 N
let i 39 N1 D7 d' J! W  O4 Z
let sum-time 02 i" V- ^+ {. h$ T1 j2 P# P. N  u( q5 L
while[i < trade-record-one-len]
5 E% G' @' j, @' |" V[% x1 A9 v7 r& r& s* ^0 L
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
% K* U* i: ^3 dset i6 f% l5 E7 c' O  \1 A9 N3 q" v
( i + 1)

5 {% J# m) p, L# A/ R1 z4 O7 L' K3 z]* Z! n% e# u+ p8 F% s4 c
let credibility-i-j-l 00 {3 t3 A, A/ Y
;;i
评价(jjl的评价)% Z/ O" s3 m8 t& C7 h' ^4 w
let j 3
' Y8 x+ Q  p! R. Flet k 4; ~+ ~6 R, W' x# F2 n
while[j < trade-record-one-len]
2 |6 F( C1 |3 ^[
; a" B9 |$ g( swhile [((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
" D# ]# ~9 F$ O2 mset 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)$ p3 L# k9 W; F8 W
set j! }8 b4 ]$ T" v( w& k
( j + 1)
: L. E) _  l- ?- Y: F
]2 X7 h4 a" r8 i# q% r# `
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 ))6 g/ B  R8 d8 x0 |9 ]/ X& B% t

9 o3 Q, Y  c  Q2 A7 A3 s: W
7 t3 J3 B- X( Y0 U- v
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
+ l/ J/ c& ^2 |;;
及时更新il的评价质量的评价  P& }4 j$ [4 r: b, R# Z
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]6 L; y* R3 y% F7 s6 k
set l (l + 1)' V2 d: L- v4 t
]
! v! J/ P2 N2 m: \end$ n1 I4 m( W+ O: i

! s6 v! W5 Y# Bto update-credibility-list
9 x, L' H& n; L" h( m1 }let i 0
3 i! b2 @. K8 J( r+ Vwhile[i < people]
* S8 \- @5 h7 s% o( X" P( P2 k[2 S7 K! O) H* j$ ~1 p$ w
let j 0- i5 X- M5 n- [# i& {
let note 0. D  q6 K1 ]' e
let k 0$ O% p# y2 y( K- d; W& f0 o
;;
计作出过评价的邻居节点的数目, S" U' H, b8 m2 |1 b# Q
while[j < people]
1 l% q* f( |% H' B[
  A5 }6 L/ G  L# h% Qif (item j( [credibility] of turtle (i + 1)) != -1)
# F" \& i# e* @- R;;
判断是否给本turtle的评价质量做出过评价的节点
. a7 r+ a5 V: U; M$ Z[set note (note + item j ([credibility]of turtle (i + 1)))7 Q8 V4 P2 H- h- K' n/ x
;;*(exp (-(people - 2)))/(people - 2))]
& r3 u8 M+ }5 _  O. v
set k (k + 1)7 r, a/ ]  `6 Q
]
* \9 T0 K) {. y: tset j (j + 1)
, Y, F/ W7 E4 Y) a]* z6 k2 f" E: R3 ?5 q! _. j! L
set note (note *(exp (- (1 / k)))/ k)
8 M: ?# a0 V  ]1 ?; f; _1 [set credibility-list (replace-item i credibility-list note)
. ^- i9 |/ v; k* S7 G0 ~set i (i + 1)
2 g5 ]3 b- \7 l! ?) L% p7 k8 []5 w/ ?) e( k- J; ?6 F
end
2 F* ~9 E+ l: d, ?6 ]: a, @+ I
9 y+ o4 s5 m* P% G# J+ `to update-global-reputation-list
( T& {4 r. J0 g$ W. V! Blet j 07 r2 f# M, u" s2 U7 K8 Q7 P: w: E% g# y
while[j < people]* e5 k1 N9 j. H
[, m% p. E- G7 W7 q1 M
let new 0
- V  R) C: Y* C: u/ R& I3 s8 E7 a;;
暂存新的一个全局声誉; j& M7 |0 Y" h3 R+ s
let i 08 {( z8 P  x/ L: I8 W9 J( k
let sum-money 0
, I' {5 I# z  V* N# ?let credibility-money 0' K: R7 I6 S& o! C: n" r2 L4 X
while [i < people]
, H# Q  p0 o% m3 |! U[
% F: |- a* r* t" r) Mset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))) l, E% v4 g" v5 O0 k" [
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))+ m1 R" O% }6 t* D5 X, G% {3 k
set i (i + 1)  e. `7 X# O( q" p
]9 C: p' w8 G* H5 k( |
let k 0
- x4 X3 O1 s+ I8 O3 Wlet new1 0
- }) K' _, \2 Z" S( g4 hwhile [k < people]3 i0 d' p: u5 m
[9 L$ n7 y0 T. I& o( Z% c
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)) @& |. U% ?+ U- W6 g  `6 F
set k (k + 1)
4 g) @2 _6 Q3 r/ }" \' {]
& h! y6 ~- p1 yset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
7 U! M* p/ l' G+ `. oset global-reputation-list (replace-item j global-reputation-list new)# c' ^% w$ J0 R+ k8 q
set j (j + 1)
7 D/ [; B  w6 |% o) g0 \]
0 }# \8 Z4 u+ }4 ^6 `% a4 b6 ^3 U2 D/ S; Oend8 f4 u+ Z2 H- L; g$ K% `

" p- r! @, N+ H! D8 ^2 m6 H. p" Z2 [7 K0 G+ v0 e: e+ s* Y

, E- w7 {% o- B5 o9 F9 x$ Ito get-color5 k+ a) P0 S  b7 a" {, m

9 g( w9 }5 G# A: iset color blue

1 J! E1 w" l: g! X* K5 @- Uend
* B# I  Q" I' W/ `9 Q+ c( W1 n) W
to poll-class4 `! K' W6 h1 ~
end
% m$ [& a+ C2 {$ v* S
; n8 k/ H6 f7 ~5 c% ?- w; _to setup-plot19 y; N$ u- m3 Q, l1 [

' X5 \* f6 }: v- g. Bset-current-plot "Trends-of-Local-reputation"
: r, ~& d6 U4 W1 }" i7 a: s. e

, q4 F. B/ C8 y# Vset-plot-x-range 0 xmax
6 O$ n, `5 T6 L8 e4 P& v7 p

: }' ~% O& ^) ~! P6 w3 wset-plot-y-range 0.0 ymax
3 {6 _0 D! X: P0 g+ b; ?. f& Z; z
end; f6 r0 h9 ~- a' `- t3 e
. e5 j$ W7 S8 P) r
to setup-plot2
0 z5 J' f  L; h5 O( F8 D; M$ |# ?; Y* M8 R( a
set-current-plot "Trends-of-global-reputation"
/ p" F' L! h7 I3 ~  V( V, ?( J, y
/ a" L  \: o; F# S: _! |5 p9 ]
set-plot-x-range 0 xmax
, j8 a" \/ Q8 {$ M* q
* c& f0 ^3 V) b
set-plot-y-range 0.0 ymax
9 c$ {3 @8 I0 Q9 y% i
end! }8 ?9 O# V" q, T5 U! S: E

+ k& p: |% l' ^to setup-plot3
9 q% B3 q7 ?( G) t  N# g0 z+ k( o. B4 A
set-current-plot "Trends-of-credibility"

/ O4 r. K: Y$ `, D: `) d
# s; O/ M% b7 ~% x* S/ J6 J; bset-plot-x-range 0 xmax

6 l5 e, c; i/ h! \% z
4 O" A6 z' [: t3 Sset-plot-y-range 0.0 ymax

' u/ ^( A+ P9 A0 n3 Tend& o/ b9 f- a1 \% S* l0 P! Q
- b- ]4 n( [6 G7 Y0 m) W) k
to do-plots" ~% K( X/ n8 C
set-current-plot "Trends-of-Local-reputation"1 a7 Z5 i9 p0 u4 Z* c6 D
set-current-plot-pen "Honest service"  ]. Z4 m$ \3 s
end
' u# M) _( G( U9 Y2 E9 c! U/ ~/ P# _" g5 P2 Q9 M: j8 I
[ 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.# S' H5 L! w6 E; X  \2 w
* w3 Z3 R0 N' {7 z% ^$ w$ 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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