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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 h" `  @; V5 jto do-business ! ]3 M: F& m- R4 d0 z2 z& x6 j
rt random 360
0 v* O9 [% L- {$ J" N/ J& N fd 1; c+ Z" o( _5 n6 g
ifelse(other turtles-here != nobody)[/ m0 D  Z$ c* 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.* D4 |, f4 E3 t" O$ ?' V# l
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ) u0 a9 R6 X- }
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
( m4 t( g, @! t8 t' h' a/ _   set [trade-record-one-len] of self length [trade-record-one] of self6 \) Q6 `0 L/ f+ T. t; [! k0 W6 A1 x( F
   set trade-record-current( list (timer) (random money-upper-limit))
9 {1 X2 Z1 b0 R' [- k2 g* K2 ]% l' I! ]3 f- U: U. f4 M
问题的提示如下:* |& g. F8 F& r3 R( }
% w" C0 E# o: Z; \  w
error while turtle 50 running OF in procedure DO-BUSINESS
" \( m( o5 r8 D# f% E  called by procedure GO$ L! j8 f$ D3 u+ r  B
OF expected input to be a turtle agentset or turtle but got NOBODY instead.
- `/ M% a  G- w+ o3 |7 L
(halted running of go)
6 n  [9 a1 R1 a; S" a: L
" P+ b! ^9 Q8 {6 _3 W! ?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( `- Q- }/ K9 H- c
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
+ K% N  ~5 Z; d* A% |globals[1 D) Y5 F2 O, R1 ?
xmax
6 I9 l- L/ g% l! E" ]8 S' A. iymax/ c- ]; R  z: q. o3 e
global-reputation-list* V  ?: w+ I* ?5 y: x4 P

" g' z( ~* O; l( x( [" `. U;;
每一个turtle的全局声誉都存在此LIST9 I, |2 o, {+ x2 H+ ]
credibility-list1 p! @3 f# b0 O1 c( F/ o- R
;;
每一个turtle的评价可信度
; E6 D7 B& a& o& B6 y3 T" y. }4 ?6 }honest-service/ `# t" q# M2 s0 u. v5 z
unhonest-service
$ q" \: W  w% ^. [$ `$ j) m2 Coscillation
7 j; |! r+ d) _) V  ]& Q! u7 Wrand-dynamic
% E9 U' H6 g5 w]
" S7 @+ {( ?4 X9 X' B/ _; \
$ p$ o3 n- |( _  rturtles-own[8 L, V2 ]  [& f) K9 N! s* O
trade-record-all6 e$ }; C% j( Q% x7 T4 \& j" d
;;a list of lists,
trade-record-one组成4 W1 T6 W/ O4 @# B8 }) |1 k! p
trade-record-one
8 n  i- y0 u2 H8 |7 _& ~9 e2 E0 F;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录# S# V) T. ?" @
0 R+ ?/ ?5 W5 c2 a1 z7 _
;;[
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]]1 q% |3 d' ]: g3 s6 v
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]2 W+ L$ N0 S* R/ y+ J$ n' y" 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  a& Q! M1 ^7 p: Y7 u
neighbor-total5 m) V5 m' M$ N/ @
;;
记录该turtle的邻居节点的数目, F8 Z2 w6 d  U# v
trade-time
  O, V7 W8 `+ U& ^1 y3 H1 D;;
当前发生交易的turtle的交易时间2 v8 |* Q$ e) _! Y* u8 B
appraise-give
$ E$ }8 t. ], A9 \) `1 ?! c;;
当前发生交易时给出的评价$ X% p8 i# e6 g
appraise-receive6 l. h' C9 P5 w$ f5 e
;;
当前发生交易时收到的评价, o0 B) g' Q1 l1 J0 n* t- n) G
appraise-time; Q% k5 P  l1 G( r1 L& A& o
;;
当前发生交易时的评价时间
- ]6 l# B+ S  rlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉4 V/ m5 F3 R; O" o9 [
trade-times-total3 S6 |( \! P% `5 H* X) A" `
;;
与当前turtle的交易总次数3 B" O0 X/ y& q) w
trade-money-total# x+ C% r# g4 B( w8 U
;;
与当前turtle的交易总金额) j" R" K5 s5 ^* N0 `* Y3 U
local-reputation  G7 B  h+ H* _3 G8 j8 a% s" c: F
global-reputation
, s+ S* {* d" w6 mcredibility
% h, z: b, ?8 z3 x+ T5 B;;
评价可信度,每次交易后都需要更新
: N; F, e1 L; `4 _1 }! Acredibility-all4 f( Y. i' s* E! a, c' k
;;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
9 q) s  m* V' l! h( O0 I, ]
3 z, z' r8 L- U& _8 N# s; i: {# |6 P;;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
, T$ B/ F) f! d6 o. ^# t) Ucredibility-one% C% Q5 T6 p$ k" H7 b
;;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
/ B" j0 [% J# @8 sglobal-proportion7 ^8 S" G+ r' P4 F* a# Z
customer* n8 A# f+ Q1 b. D8 J
customer-no
0 z' O, C7 L/ y4 _" ~trust-ok" u' z# W3 }% a8 m
trade-record-one-len;;trade-record-one的长度% \$ i8 c9 {, {3 O. X2 @4 ?
]) r* v  v6 S" G# I8 G+ R

  q. e$ P8 E6 Y+ O;;setup procedure
, A) l  T* y* P7 M( Y6 m, [; Y1 S
# D1 x1 y) r1 Q; A& t* k3 [/ Nto setup% q+ z/ R4 D- C

3 y  K5 `( ]* s6 Gca

5 ?( n1 q( ?4 U% M8 r$ }4 D8 m+ a1 |7 V- \% B! i6 V
initialize-settings

6 M# n8 [+ F  Q" h* B" v
4 d' N* R8 t/ |  |3 J2 Y0 m' Wcrt people [setup-turtles]

; x5 H, l$ M, s+ J8 g' P6 h* d! u5 T4 e
reset-timer

  W0 f" W- N- U( _" j: [5 i. b( q% u4 U+ e1 ]
poll-class
6 T' i# z, r7 O% _0 A9 ]' J
8 c$ ?$ U* E/ T
setup-plots

8 B" u7 O/ H& G& e" _: m, a; V+ W% u1 ?
do-plots

! |* i8 T9 \% m7 \end/ }9 N  k; p4 B( {& g. e6 U
7 C7 V8 K+ E: U! E
to initialize-settings! m, H, V. x# G
! |/ G% U( Q6 F& y
set global-reputation-list []

$ O6 b- w$ k( b/ r7 V
; r6 U3 Y; G- z; E1 T+ Tset credibility-list n-values people [0.5]
9 X9 b! z6 h7 w( K" L2 A0 I" m

. r/ }6 {3 n0 q: ~4 J7 @; Lset honest-service 0
) `4 ~* m8 Q# Q. D1 s& Y8 `
/ T' g" i* f+ E
set unhonest-service 0
- t1 y' t# x  L6 g5 x/ d

! ?1 M, V( t+ g6 K3 a7 Vset oscillation 0
- w& A; ^3 q1 t

% l7 o/ |9 O1 G; a4 _# e  bset rand-dynamic 0

' J8 y$ b1 N# q' V4 H& \end
6 ?$ P" j, _4 H; V& d* {
. D2 }3 U1 v! r9 f6 ~" r( qto setup-turtles 4 F; z* m( {0 ?
set shape "person"
( u; R/ N" X9 ]! k9 N/ ]3 k# d1 Bsetxy random-xcor random-ycor
- x+ y: I  ~% B* |& Z# fset trade-record-one []" @+ Z0 g0 u1 V2 L9 V! d# Q7 I' F

7 b, q2 M; k( Z$ \7 ^/ Uset trade-record-all n-values people [(list (? + 1) 0 0)] - e" L9 s4 @+ E5 o. Y' i) L" m3 ]  Q8 |
! S' ]$ z8 h! _/ M# g
set trade-record-current []) k; t  K  z- U
set credibility-receive []0 R8 _- j( U! w" ?2 ?; |
set local-reputation 0.5& B% h9 L" |' H8 k
set neighbor-total 0. r  L, ]) J+ @; [6 A9 o, ?6 U1 O
set trade-times-total 08 U2 ]+ M: I: v
set trade-money-total 06 k0 S7 Z. `6 z% _+ v
set customer nobody
; w2 P% H$ h/ Dset credibility-all n-values people [creat-credibility]
7 V9 \, g5 [% t: sset credibility n-values people [-1]
4 |% K$ |; w: K3 k* Cget-color, Y3 O  X+ W& n, A
, w' f, ]* C3 R; Z) r
end
8 U9 P# X; B4 ?4 Y. _; \' @
# H; \3 E& V, Z8 p5 P+ M, H6 J2 rto-report creat-credibility
: |& v, r$ t, J# q8 \report n-values people [0.5]+ A- Z& _$ U: ?8 {
end
5 m, ^. r* U# P* Z( [& G
/ ?9 @3 s$ c( x0 S% C, W6 s0 B0 D% I0 Jto setup-plots$ L# w. e6 J3 M8 g

& ?& J  N2 x* C, U  L* B5 I4 Qset xmax 30

- r  e  d/ R* V& Q5 {5 Y! g9 F( B$ M: Z% A( W
set ymax 1.0

1 {- D6 [$ s$ K# M$ K4 f( R: v2 ^
/ s1 Y- e1 z1 G! Y& F9 t8 Hclear-all-plots
: H8 @, u) x; E- k6 x3 z9 X

: T6 D( V0 W' S6 A$ |' Jsetup-plot1
: K% K! O, Q$ W/ m+ T' D; d* O
; m1 _+ [- m; F2 _: ]
setup-plot2
& M( j8 q' P& D$ b4 @: [
2 j: |/ r; w8 k% @$ D8 k$ h, K' g
setup-plot3
3 B" ~% ]0 }7 f4 g0 a  B
end
, V2 A8 I& g# p6 z9 Q: C  M
7 [$ g$ m: I) d& r" I) Y;;run time procedures
9 }" l4 @  d. d# j: \5 O, z! ?. x1 {9 d- N
to go( k" u6 _4 i- i
" M1 ?6 N4 _# N( [4 B, A7 a
ask turtles [do-business]
  ^( ~, c: C# q3 m
end
* _" b' l, w1 Y) y$ L' c$ [2 b( A" ~- U7 P9 V
to do-business
4 X6 n4 V+ u; ]4 B

: Q, y* c  l6 O8 D- G/ K
8 `+ C( v5 m3 L+ m, I4 ~7 h7 brt random 360
8 W9 h8 [! y! m* g6 @$ h7 t  G" X
7 p% b/ C1 T* _8 j& E
fd 1
8 U& K, ?2 N. d/ z/ j/ P
3 g; j( z/ B- `0 v
ifelse(other turtles-here != nobody)[
7 ?+ e( b; ]( a$ \+ `

1 L  n) C* k7 |- I# b8 ~set customer one-of other turtles-here
/ _0 f$ w: o1 u1 d

- ^7 ^% T4 e1 Z;; set [customer] of customer myself

% r! A5 s# U7 O) R" @3 G  R- g( M# K* z( r5 |' l, t% o6 U
set [trade-record-one] of self item (([who] of customer) - 1)6 r$ a& z/ J+ {- T) {
[trade-record-all]of self
$ p: A! n# L$ ]: Y: F# j;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

* U  Z/ _2 O3 G3 s* u1 [+ r8 D
7 l$ u2 J: C) x5 Iset [trade-record-one] of customer item (([who] of self) - 1)' F) d3 p1 t4 ~3 s, J4 V
[trade-record-all]of customer
1 J+ C! Y4 m0 L; a* h

8 `: d! H# y: y6 l( G  a% tset [trade-record-one-len] of self length [trade-record-one] of self

4 H" j$ B; s3 y. E4 S% _2 {% M6 {! a: T; _5 z  X2 V9 Z$ j
set trade-record-current( list (timer) (random money-upper-limit))

6 a$ r- h/ r2 b  t3 Q: l
  m" u# ~- A2 _ask self [do-trust]
$ y5 q% f# k# V$ N" U) e. e5 b;;
先求ij的信任度
8 {$ C5 U! V1 F  T: E% \3 _8 [$ j* C& I/ g+ Z/ K( l+ |8 d- E
if ([trust-ok] of self)1 E2 A4 V' q' e/ t. w
;;
根据ij的信任度来决定是否与j进行交易[
' p0 a" C9 s# d+ p- V. _" X4 Bask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
0 n+ m  R9 N! }% `1 E8 K
$ H  S- Q9 E) M$ A5 |[
8 m% G+ S* U6 a8 j8 _
, G- b, P8 v/ F8 q# J' o) s
do-trade

, r5 _( f9 c# N7 ^6 v' y: Q9 ]# j3 l
update-credibility-ijl
( S. u+ t7 J: Z+ L; s: W8 }3 R

# q  v8 V* s3 t/ t: Zupdate-credibility-list/ T9 z- x& m! g; x+ J

4 ?( F. H& _$ {3 R9 i, X* J) v
" y) O& O5 o, y9 G+ i. e- Xupdate-global-reputation-list
+ \" {9 H3 x- a" U6 T& ^; Q

- k4 d: {- D; g6 kpoll-class
7 X$ y& ]1 _' d) h3 X

1 g) o  M( S2 M/ ^get-color
: s4 t  `8 U0 L) v& B5 d# E% ]  S
, ^; m) k: ]0 F6 I
]]
0 f7 ]7 v: l+ s( f9 ]% a4 }1 c: m2 a% F
;;
如果所得的信任度满足条件,则进行交易
) m. S# C9 f: K: {6 S: U; v* Q" y6 B: s  A7 b
[

' _6 X! d6 P8 ]* L. m$ \! z+ x5 D8 O. ?
rt random 360

4 {/ C% z2 s7 ~( h/ v9 s- e3 A
" @2 f/ n( O, R1 Y9 }& Ffd 1
$ i9 }+ i! f' S7 W

1 }2 f) N/ e. G! {4 `: ~+ L8 i]
- O6 ~# Z" [$ S3 \6 q

" e- p  S8 O1 e9 ~/ W; G/ Mend

. c' ^( `2 m$ f" t/ R  v- ?  v* h, m) q# `7 t" G4 l/ G
to do-trust
4 N; Z6 i9 a0 h1 q  _set trust-ok False7 i: l$ V4 Q8 w4 e6 M

+ M' [! Y' _6 q& o2 k: [1 J& `2 g" l1 m. c
5 t! Y! j- X, C9 o% |9 p$ ^
let max-trade-times 0
0 u0 Y4 b. {! T$ P6 Gforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
+ P' Z4 l) C* q/ dlet max-trade-money 0* E7 Z8 w, b* `7 e! z8 N
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
; _, ]( T3 V) k3 X" p3 A% v7 ~let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
. ]1 B: I) v; g* L! X6 T; `0 V9 ~; w1 e4 d* z# t% R2 b5 u+ ]

/ b- b' R  d. q5 u* U/ G  aget-global-proportion
) {+ ^5 ~) R1 S+ m' Ylet trust-value
. |! R. T8 p7 ~# B% h) e$ q& _  B, Vlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
  T+ ]3 M# p* ?& i: L& a5 Y4 b
if(trust-value > trade-trust-value)4 B) [, Y) T: ?
[set trust-ok true]
  h. K# F- h$ p9 g" ?3 |8 Aend& G* }3 U# r5 w

" i/ ?, ?, H5 I7 lto get-global-proportion
: N9 O% b/ e+ b1 R4 c1 }* tifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)" W& y# F5 J2 A& L/ o2 I
[set global-proportion 0]
3 z- _/ i3 K/ x+ \! E. Q[let i 0. w9 e' j/ l; a7 S* S6 Q" w' S3 A
let sum-money 0( y9 F& B* [" Y" e2 {
while[ i < people]6 [+ x6 R* l& c8 T0 r( d
[  X5 l5 Z" W, v4 c( ]
if( length (item i7 y' S6 [5 m6 c5 ?/ d
[trade-record-all] of customer) > 3 )

- n  r2 L3 }* q: C[
, S1 W, k0 ]3 `8 @9 ?( X2 Aset sum-money (sum-money + item 2(item i [trade-record-all] of myself))+ p; Z: \0 `- e9 E  W
]7 U3 O. w+ `4 _# i! b" Y$ ^
]
1 q, ^- ]3 t- I/ x0 v) @8 w( B: M4 Olet j 0
. b( U/ n3 K* m+ k' i- Flet note 0
, u; E$ `- V. S$ Awhile[ j < people]
& d+ Y+ Y! a' [6 n8 Z% [! x3 |& @[0 x" ]5 E, ^8 q1 v6 }
if( length (item i
2 y# e3 l% O, o; L[trade-record-all] of customer) > 3 )
8 I0 Q) Y9 f7 U! ]3 @6 O
[
6 \1 \( J0 I* z0 Rifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
4 ^5 A2 J+ f$ @; G[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
) G( r( J# g) |' a& K, Y[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)], [1 @) h* e9 W$ n3 t- l; |& E
]
3 I1 t$ [' [. L+ _0 B]
" y% T: `8 m  ]) l3 B9 Z$ B1 Zset global-proportion note! `) q1 x- A# X8 A. s4 \; m# ]. j4 y
]+ C: \( ~! u* C5 n3 u
end
: _& p. \6 }+ n  u" b5 ?$ U9 r# G4 g: M: M: S
to do-trade
! P% D3 p: K# Q1 W7 |;;
这个过程实际上是给双方作出评价的过程
: Y3 j  x; h# }set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价+ i9 j' ^) Y, ?$ A' u* z2 x9 I
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
7 k7 D" p( m; X- Q( `& b# b+ ]1 wset trade-record-current lput(timer) trade-record-current$ F- n) E5 p2 f2 r8 ?' \7 @
;;
评价时间
7 l' w" C5 Z8 b, }3 v& vask myself [9 q: L0 B4 m6 Z& e
update-local-reputation
1 |$ r) C. u3 N  w4 Mset trade-record-current lput([local-reputation] of myself) trade-record-current
7 t: h8 `0 a  p' A( y( J0 h4 _]2 y4 P' v* Z% U  Q# [" E( ]& V4 E( P
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself7 G6 x$ U: Y, i' Q( v
;;
将此次交易的记录加入到trade-record-one
& _8 P+ W! L* |, M' ]* |set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)/ T7 n6 n  u/ n! ^2 y# c2 m/ \
let note (item 2 trade-record-current )9 y3 g' i3 E7 t! L0 Z6 N; Y
set trade-record-current
) I- i. P8 t" ^8 V! {& m' `(replace-item 2 trade-record-current (item 3 trade-record-current))
4 Z7 M" h/ Z7 R3 }* b. o
set trade-record-current  d* U. w6 N% f; S8 Z) F% e( ]
(replace-item 3 trade-record-current note)
' C! h0 U; s- A$ l7 M, Y8 S0 z2 N: R4 n! K& d3 f6 w

8 h, B  |; E9 Zask customer [2 c% V* B% [' l$ \# ?) o. b, A
update-local-reputation
; k+ b7 {: o/ T. L" H. zset trade-record-current
; W  T+ Q( d9 H2 E, U) p(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
1 f2 h( H3 _0 ~7 _
]
0 L0 R5 ]( D" W" r: X9 \; I8 y. o% l$ |, e: P9 [
1 Y: M: M$ U( @, R( j9 g  k' h
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
1 X/ w. }; [' t1 H
. T8 T$ K. X6 F- w: r7 `
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))& S! e9 U8 L4 O$ E4 p- P; s0 M
;;
将此次交易的记录加入到customertrade-record-all' y5 }, }9 y; }' V& e! g9 Y
end
8 r2 r  e! T) H# j6 Y7 {' o3 M5 S2 A" y4 Z' c, j
to update-local-reputation; x% c8 Y4 m/ M0 S% Q6 L: R, o
set [trade-record-one-len] of myself length [trade-record-one] of myself
0 |* w. B8 f8 k/ Z9 l/ w" U
9 L8 K$ v  q7 F9 A3 }+ s- }% M7 F3 E2 d- ?
;;if [trade-record-one-len] of myself > 3

* g  {/ K4 @/ L4 d4 }update-neighbor-total
+ Z/ n/ m! w9 u+ ^, X( B) ]$ v;;
更新邻居节点的数目,在此进行5 m: Y: y7 m! \
let i 3
# m+ ?3 O4 V( i% j& u  Wlet sum-time 0
, _1 N$ \3 r- k5 |while[i < [trade-record-one-len] of myself]) I+ K# s* D; ~
[# v& l9 Y  y; ~( t, `, H, w
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )$ h% y% P) E- i: Q7 v
set i
8 n. K& Y, O! I8 G* U" m+ ]# [/ o! |( i + 1)
  M) w" G5 K1 o. N! [. m  s" _
]
! J4 H4 p2 F% l: ~9 W4 p: qlet j 3
$ m) F: H9 k, klet sum-money 0
1 u1 h1 M/ c% m/ G: E2 o: Uwhile[j < [trade-record-one-len] of myself]
6 p/ Z$ U9 k1 `3 ?' m+ H[
% e  x& q- O1 W/ r3 w$ s2 Xset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
/ \. g+ K6 F" Q% b. lset j
7 n8 a* n* m* P( j + 1)
2 U4 a# |* f& x. M4 |6 [7 }
]
6 F$ \  t9 k3 R8 D( blet k 33 g3 V2 H4 g1 p, S/ [( Y; d% `
let power 0
/ `. y% O  j! t- Slet local 0
  T8 }7 u7 n1 T: v5 l7 A) rwhile [k <[trade-record-one-len] of myself]
2 R0 S& o1 M9 i[
' w, b1 A) R' g" Fset 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) 2 c4 F" M" k  P4 ~, v3 N! D
set k (k + 1)
6 j4 w5 ~8 M3 F]
* L; ^' N( ^/ K" q! p) u: l/ v& Hset [local-reputation] of myself (local)7 B. ]% m) R6 |2 |
end. ~8 f1 c/ x8 H3 Y) u3 K+ u' H  X
. N* p4 n: [9 }5 l' T% ]5 d
to update-neighbor-total
2 `1 U, R$ ]2 ]5 b- x3 e; s  _) c* r% I0 r6 P
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
" v% a, |: A0 U. |4 ~9 r3 s. O- }8 c; T, N( _9 N

7 V0 J5 q5 h4 A9 K$ uend
8 b' d9 U& X4 ^% K
: |. Y4 y( ~: t, X% u$ Xto update-credibility-ijl ' k( j% W4 L7 o* `5 j9 d
% [4 N$ E7 @6 R1 ^, Z7 A
;;
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。5 {4 s8 n2 L, r5 k+ [. ]! H
let l 0
$ B) P, T* R8 V5 Kwhile[ l < people ]
& w8 s) T3 p2 e! {/ F' ~( r;;
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 o6 `/ v; _) \2 Z3 d[
. Q/ S* g9 F$ |3 [let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
5 Z/ w9 n5 Y" z+ ^& B+ Vif (trade-record-one-j-l-len > 3)
7 r& g. L& o4 I. r) G2 D* K[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+ j  w! u- c8 r; q
let i 3) f9 f, v% A1 e$ ^: w9 L4 S
let sum-time 01 S) g2 x; ?: `* v
while[i < trade-record-one-len]
5 j% O$ u* M5 @4 U, T' n1 I[( V3 G) Q, h% Z" X# i$ ]. q
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
; e, W; i, d: m2 [set i
+ G! K2 \  W% C- ~( i + 1)
) e& a' d+ u# h" O8 n
]
2 v4 C3 F! Y0 C# f7 ?1 [/ {0 Vlet credibility-i-j-l 0# y" Q8 e- |& [4 U8 q4 R3 e. l
;;i
评价(jjl的评价)* q/ ?8 U; ?6 f& n; w; t: r
let j 3& y( T: K5 m8 Y
let k 42 j- [1 R0 v" l& u
while[j < trade-record-one-len]
6 A0 J( C" M9 I* G" t[
3 D% |$ E) d* a6 Owhile [((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
0 ~% Y7 h1 J% Jset 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)
+ d! G9 Q5 s- u/ C1 H. gset j
$ k$ x1 r2 k! Z& ~( j + 1)

" {" h: L0 A! |& F) W]9 K9 f3 z2 {8 W4 Y  s" ^/ s
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 ))' K* q) C- E2 X
# O4 D( h# F: K' }, e

7 V9 Q0 ?( A* N  n: k, \let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))% c! E# q+ \! B* H6 b# L# K# k
;;
及时更新il的评价质量的评价' w  M7 i$ z* @7 R- l
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]7 z/ L) O: g( _) o% [9 C: w; c
set l (l + 1)/ F3 _3 }$ b* j6 F
]
* v1 f, H9 L+ j2 ~) c4 Q. h- _end
, ~; `) N" `1 V" h$ e
$ t: k- W* n! \2 |; |6 Vto update-credibility-list
1 Y3 Y8 T: S7 X. Q' e$ A% slet i 0
1 @3 j( W/ p7 @2 D) k' @, h7 i. K7 Swhile[i < people]
0 _. G6 v/ V, A0 L; i* f) o[
  ~: l2 `4 ]9 T0 Q# ~* v6 I& Tlet j 0, `+ s' ?; Y3 n! a2 Y
let note 0
& L4 D, y9 F1 l1 ^let k 0
6 m, V5 ^& Y* H* i;;
计作出过评价的邻居节点的数目
& D. V2 Q5 M: lwhile[j < people]* J7 ^" `% ?. P1 }1 c. A) l
[
; L7 r1 O$ {% Y& P% `if (item j( [credibility] of turtle (i + 1)) != -1)- i& n6 O/ }, [6 _
;;
判断是否给本turtle的评价质量做出过评价的节点- x6 E, K) y9 n
[set note (note + item j ([credibility]of turtle (i + 1)))% W- _& ^% \# D
;;*(exp (-(people - 2)))/(people - 2))]
9 C; n2 G2 |1 |0 v, o! a
set k (k + 1)
: w& {# w! l, N6 O% {]
1 i) y# p8 l' P; {1 Wset j (j + 1)
3 ?3 y" _5 l% n2 {3 O1 m1 ?]% u; Y% j0 ^: E6 @) A; |
set note (note *(exp (- (1 / k)))/ k)
: |1 D' l0 s8 v- g+ aset credibility-list (replace-item i credibility-list note)
# B# }+ \3 G9 h! v- F0 U4 @set i (i + 1)' f8 I) u* `) |' W
]
" X/ Y+ Q# A+ ?$ Xend3 {' ?, R8 u% r5 P2 a
- n) Q. E8 V& z/ ^& `, c: M5 j
to update-global-reputation-list
- b" q" a0 @; @! M. ^# m) plet j 0" p- s3 k" k, F: K: ~; I7 S
while[j < people]2 Q! c% O5 K/ K& q' g* v
[) u, w8 s( U! b% O  G8 G1 |
let new 00 {* f4 _" F  d6 e9 I6 o0 |
;;
暂存新的一个全局声誉! P- C; I4 o& I% r
let i 0) V, P2 h3 J% I5 Z; O8 |
let sum-money 0
: h* u4 R9 y+ e2 e. ?4 x2 t  llet credibility-money 0
! m. D; I( E, q  X. d6 Pwhile [i < people]9 h+ m& g) h4 b5 c8 G; i# w& }. v
[( k3 c# X% Z' ], T& F$ z
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
7 G- k! E/ E5 w- i9 rset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list)). v) K7 n( X( E" ?6 ?. @
set i (i + 1)
+ A7 J1 U2 X6 k5 A5 l]
- A) K9 ]3 i$ W( G  Alet k 0' ]" _% H1 p( f
let new1 0
5 o$ y* ?3 h8 q" j7 U+ hwhile [k < people]
3 _4 V# `+ I+ V[1 t9 a2 x" Q) `9 P- t9 {  Q
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); }- B- r3 j( A4 O
set k (k + 1)- p! K) d$ D9 W* B  B, X$ H% C
]
# e8 v7 H9 S+ A* z% |set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ; T# W4 S4 L# c: t( H. Q) f. o
set global-reputation-list (replace-item j global-reputation-list new)
' A0 D( ]% H6 \set j (j + 1): T3 B, g9 b0 t2 ]" a# w2 X
]4 L( M: V3 N, T5 f- {% V' G9 F
end+ Q( e2 d& W# m2 Z
3 I7 n; c9 F( w# M" ~
# t9 n0 l$ {2 y1 e6 v! V' d

. @' ?) _, a/ u* O: Fto get-color0 L" `* o- Q9 U5 s# V' ^  k5 j/ g8 y! f
/ C9 v0 ]% v4 u" x
set color blue

* F3 g: x$ ^9 U9 c& }end$ j8 U% ]" e7 J2 G' `  S
0 Y0 i* J1 T6 q/ f# k/ T
to poll-class- ^, v2 X0 e5 {7 K1 C
end
3 f: v* X6 k/ ]& |. d6 `, A8 ?# D9 n1 o& Q; \' e& [
to setup-plot10 b5 c: ~, q; e( F4 X+ [/ I
5 @1 P% S  \6 u4 s- l$ a0 z
set-current-plot "Trends-of-Local-reputation"
* ]: f$ }7 ?2 ]+ h. G

; d5 Z- v, X, ^$ Dset-plot-x-range 0 xmax

) ?- t+ }! V* V0 G' P  ?. `5 b/ |: m+ P4 f1 H, v) e5 Z; L7 G
set-plot-y-range 0.0 ymax
. H8 n% S8 P2 ?8 D
end# W* }9 V2 R! @8 _; V; P

. u/ u2 [! \7 Q6 k& gto setup-plot27 ?( r  t$ y; W0 K' s# x1 x% [
3 B+ A8 i, X$ ^/ J3 e. I1 K
set-current-plot "Trends-of-global-reputation"

5 K- P0 N* y8 @' O4 D0 |. W, ?- s7 P  q$ G1 P. t" R# j7 }, s
set-plot-x-range 0 xmax
  v( n# N' {, e1 ~

( Y1 G- ^: P  U. a+ T1 c+ X% i( M6 Nset-plot-y-range 0.0 ymax
4 ?$ x4 Y2 _- A7 V( E! _
end
3 Z6 W3 W  O8 U0 ]3 n3 L
3 U( s5 K0 @3 m' e9 j7 v; mto setup-plot3
& H1 o/ |- B9 H7 C' h) P& F6 Z- L/ e8 L3 i
set-current-plot "Trends-of-credibility"

. @$ M& E! R: K" I$ K8 T' W8 d! U! E0 L6 u! g1 l$ O
set-plot-x-range 0 xmax
: C0 P: I* O7 Y5 T3 Q/ e% _) J

/ K; q0 r: I+ xset-plot-y-range 0.0 ymax
' H+ i4 e5 E) A! z
end) j/ t& Q2 L# R$ h
9 O' _* K! D$ \, ]5 R; c. k' ?
to do-plots
/ e( P  x8 L8 J" Pset-current-plot "Trends-of-Local-reputation"" v% x0 W, J/ V  ]4 H6 A
set-current-plot-pen "Honest service"
7 f# \$ B/ U4 Yend
5 i+ d% e4 q. k' L* ]- ]
4 e0 D; v0 h8 l% O( S8 s[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

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发表于 2008-3-19 11:33:07 | 显示全部楼层

有点困难

没想到挺复杂的,我去问问师兄们,不知道你是自己建构的模型还是其它模型的改进,我试了一下好像setup都有问题,别着急啊,呵呵 。
发表于 2008-3-19 11:34:29 | 显示全部楼层

还有啊

发表于 2008-3-19 11:35:59 | 显示全部楼层

还有啊

能不能传nlogo附件上来,一个一个敲太累了,好长的程序啊。
 楼主| 发表于 2008-3-19 12:47:57 | 显示全部楼层
嘻嘻,不好意思啊,现在把附件加上了.
' H& g( \! h9 G4 }/ F
6 N* ]! B3 d5 y9 h  i. z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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