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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:
8 e  J9 S6 ]! ?to do-business ( b. L. U% Z7 N' z
rt random 360
+ }  X% ?$ d& z* C$ P. z fd 1
, p' q1 K3 p* S0 l$ U& q9 A ifelse(other turtles-here != nobody)[2 w. A3 {: I. O  q' v% i- _
   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.
  \* \: @8 _3 C& B1 L- d8 V% i# H   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
$ |' k% t( V# H! S( m# c   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer. I# w: K0 a  D1 A3 L6 t% @
   set [trade-record-one-len] of self length [trade-record-one] of self5 K0 F0 @( _; X3 f1 \& y
   set trade-record-current( list (timer) (random money-upper-limit))
" X3 [3 w5 z3 c. k8 o; ~* h0 \  q
$ t; F* }; O4 M: q& I; \问题的提示如下:6 X7 B' g- c) I- ~

8 m4 [6 b- M  N) ]5 c5 \# o$ jerror while turtle 50 running OF in procedure DO-BUSINESS! l  U# v9 e$ `4 Z- ~7 S; N( Z1 \
  called by procedure GO- e6 r7 y4 w# `* X0 }& l* D' N
OF expected input to be a turtle agentset or turtle but got NOBODY instead." s, O0 l8 Z/ |  h' W9 ]
(halted running of go)( o7 q5 q, {* A( d- M2 w0 ~2 e
7 g% u; v* k6 |: f$ j; g$ m0 p! u# G
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~~; L9 Q3 ~! v" I1 z, r, {
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' n! g' b7 `$ Y; C- i+ b! B
globals[/ Y- h0 A8 @5 e6 Z
xmax( [3 \) W: o  m
ymax
1 y. B+ [3 z4 q3 P7 xglobal-reputation-list% n2 @& O5 ?; C
9 u1 v" z5 b4 b
;;
每一个turtle的全局声誉都存在此LIST2 T2 `0 y" B) f  E* q0 n
credibility-list
7 F* m, v. _0 ]5 b! A: i" |: s;;
每一个turtle的评价可信度
) O# u* U0 N+ j5 w% V* [5 Ihonest-service
9 L# I* J# _( e3 n: `6 ~3 w' qunhonest-service
* ?, `" F; @7 L& a7 ]oscillation
( z! `' d" S' ?- d5 Orand-dynamic
& [5 p) Y' K% M2 O& L, M( M]
0 d  R: n1 y, t. ?$ Y2 P6 R& J% ?, `1 C* H7 v0 u% p  R' f
turtles-own[! T1 t' p* o$ r$ I& m
trade-record-all
# l4 ~$ G  O  N; w# J5 Y;;a list of lists,
trade-record-one组成
; V8 d1 Z% Y5 q0 _! {& |- @4 utrade-record-one
8 m2 `. u, t" `/ a* N' E! g;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录& D. u1 n- h+ q% G, T4 }
) p0 [; w* i* [& ~/ a- ]
;;[
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]]
# s' q1 ~, f6 O3 Y7 Z( a% Otrade-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]$ z9 ^* Z4 I: o$ R
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list8 ?; l2 Q; v& e- I6 }6 y) G0 a
neighbor-total
* r) b! H/ A3 L  m;;
记录该turtle的邻居节点的数目
* K# B: f; D$ B; J* y: {trade-time
4 G1 G, q5 T! A6 o0 J( y;;
当前发生交易的turtle的交易时间3 J+ @7 {" @/ z: a9 D  E5 E
appraise-give
6 z" K# }& I1 W;;
当前发生交易时给出的评价8 m* e. g' |( i4 ]
appraise-receive
5 O) w; f- {  z1 g;;
当前发生交易时收到的评价
1 y: g* _' L3 H& _appraise-time& t; q. u- |& X. u  Q" z* I& v
;;
当前发生交易时的评价时间
/ R5 f2 E0 W3 `* t8 M. ]* hlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
6 m( y" O% Y/ i) d* Otrade-times-total1 @, u  o8 c, e3 g
;;
与当前turtle的交易总次数
5 }- @9 K' n# p, f# ~$ f7 jtrade-money-total8 P+ ^1 Y  W7 T# ]0 d& `9 o
;;
与当前turtle的交易总金额! m1 P* v  I: D& x
local-reputation: r2 |" q1 r3 J* M, u' d" Y4 F# }: [
global-reputation( @. s' J4 j6 L' A' r* [7 X$ v9 q
credibility( O! A+ r0 \% {# P
;;
评价可信度,每次交易后都需要更新
: ?$ C5 I2 A. D( r7 I3 ^: |credibility-all
6 q/ l8 D9 h* 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5 a1 F6 }% N1 j# Z
& S- j. W6 Z1 b' o1 [  p* E
;;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0.59 t" c2 m8 [: {$ L3 E, {
credibility-one
& t5 R$ W& ]8 M8 c9 ^;;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
; f9 r7 B; d! p8 V) ^- c' Hglobal-proportion& U$ q: h9 R/ I+ t: d% f" A
customer
  Y$ u. z8 D" D" \2 [customer-no8 H6 \2 ?# U; N. d) m  M; c
trust-ok- o& T& d3 _9 Q* ~& ?
trade-record-one-len;;trade-record-one的长度
3 r6 G/ P- F! e]
$ Q  G3 F, J' X5 C6 u7 p$ p8 e; z/ ]* y; ^- T: o
;;setup procedure
) _5 o# k9 |4 H: ]% T. w, c- Z. O! v3 ^' z
to setup" o0 v2 p3 U$ a4 @

) O9 t4 j6 D5 G9 @ca
9 |; l" X9 W: v$ J4 ~. X
* Q: ^/ P5 E& o( V  N# \/ L" P
initialize-settings
; ]* ?( U0 Z+ w' p

1 Y: x. x, ^  A  w8 k8 pcrt people [setup-turtles]

, D/ N8 z, V; m& p  ^
9 U" _2 A, p& y1 A" kreset-timer

2 z* I9 I$ P9 D1 W# A$ q& b$ ^) f3 l( @9 k) @$ F% I( k
poll-class
# b8 a2 H4 J* N, o/ U

: s* w3 _0 B* rsetup-plots

& ]. k# y3 {2 s9 h7 l7 n+ N) U9 T$ \1 b% J9 w
do-plots
6 p, r, S9 P, N4 F6 D2 L
end3 x4 q' f2 }+ `5 w! g7 c

5 @/ E# o2 l5 U- b/ `to initialize-settings
1 @5 }1 R' Q6 e9 l2 s# P
8 R" h3 M* c/ b: K" d0 z- wset global-reputation-list []
! E- Z7 D& n* M3 j
# _  j  v6 N$ B/ v( Z% c
set credibility-list n-values people [0.5]

- Q* I* |) [4 E0 ]6 K2 }
& P6 s+ r3 t! d4 s  R: ~set honest-service 0
/ {6 o( g, ]& D$ E" O$ I

9 O* a( c/ \6 |  {set unhonest-service 0
8 O7 N' D+ T% m
/ x  ~8 E- b6 t; R. x
set oscillation 0
# O+ Q  @3 L' J$ K8 K% @

0 `2 a: N& b( s, W) W% fset rand-dynamic 0

% ~+ T1 M9 w; z7 n5 Xend
6 B6 G5 Y) K$ i0 b: q: ?7 C+ q- b+ a
3 K: g. a0 y4 N3 d/ O; n" d2 Eto setup-turtles 5 d) n9 L% _7 |3 N2 H
set shape "person"
, e) g2 K3 C# Msetxy random-xcor random-ycor
" n7 C/ v) d1 u  p  B3 Vset trade-record-one []1 j, [" ^. K8 `: m9 \8 F
; x5 S( v' n8 @) B: j, _0 H& g' Y
set trade-record-all n-values people [(list (? + 1) 0 0)] - ^# v/ Q: N1 V$ i

8 x; o% @* I3 l7 t- X2 n) E5 b  Oset trade-record-current []
$ b; u/ [0 _5 y0 F% F* eset credibility-receive []
; @8 `9 d9 l- s, N! eset local-reputation 0.5* R2 G: @: d& B8 v% i- I
set neighbor-total 0
5 }4 n. x" J, Zset trade-times-total 0
" h+ m  Z" k* |set trade-money-total 0+ k4 o4 Y& v3 k  G! M
set customer nobody
9 `* `* s9 P5 u3 J( U9 c& M' fset credibility-all n-values people [creat-credibility]
& P9 d+ B6 S$ I8 ], ?% u+ }/ h; `; Oset credibility n-values people [-1]
# S+ k6 m6 A9 B1 D3 y5 F& jget-color
5 x7 u0 g+ E( u/ J) ~

9 h2 D' p# r4 |+ N' s, X* Uend
: w% `: x- O, I/ [! p2 F! L  [# Z3 m
# F* y: o* g( c8 r7 Yto-report creat-credibility
" `$ J& x! c$ kreport n-values people [0.5]5 Z0 K9 u: E& a6 m& u! ^
end
) U" p1 G6 ?" V# c' g! C1 |, Z' K/ ^
to setup-plots
$ B/ l3 J. v' L& f
+ |" @" Y/ |, n: d) l% r+ [' E' R2 _set xmax 30

6 U5 r, g8 V; G. w5 x5 b2 y" l) Y8 K( V' p2 i' w% q1 X5 s; I. {8 g
set ymax 1.0
# o+ p' h* k' Y. @% F; _8 H+ f: l

( J' N# E. V, i) W9 ?8 bclear-all-plots
4 m+ O+ d. p* y
* A2 S4 p) y7 v$ p+ F
setup-plot1

  `8 N; E$ O! P, d) a+ X- H- ?3 L- @' @7 E/ p, n
setup-plot2
$ q# B6 ]; w7 M5 A  e0 G
3 G; n3 V; k8 K3 ~7 {" x3 U; }- g
setup-plot3

# |, H3 V3 {! q# Yend- y4 Q2 C( e! ?0 Z2 ^) }

9 t3 b( F' s% J;;run time procedures
; P( ^% A, \9 q3 y7 g( m  ]" y+ u
1 V9 l- `/ V, f  dto go
6 ^# G. |. o. E* e
; e: p/ z' J" w7 [+ q$ K' V% gask turtles [do-business]

* `+ W3 V) [3 m$ _* L  D) ?end# j$ |3 }0 a; l0 i7 S

: }7 c& ?" r5 [! q4 d& G6 n+ uto do-business . B# h5 `" z! e  d2 r; l

; Q& y( ~! K% j7 w5 O% W* r5 Y* U7 |8 w( z
rt random 360

$ J. w" Y, Y4 d6 l' s8 R. r, _' K' V6 |+ M3 h7 A
fd 1
: ^0 P2 S9 A& a. d" o# y

0 I4 D7 x0 i' }ifelse(other turtles-here != nobody)[
: F6 L1 ^4 Q7 q
: Z5 Q3 q. P% h0 t
set customer one-of other turtles-here
5 F3 L2 H6 h+ v8 z2 l6 k6 C! m
, b1 T5 E+ t* z( c% l
;; set [customer] of customer myself
' y5 b. n% ~' J/ f5 Z
8 v' s0 J- b1 E4 q  V& K& K& F3 _
set [trade-record-one] of self item (([who] of customer) - 1)
. K) O$ O* D, Z9 A+ Z" U[trade-record-all]of self# [( M- ~- e, y
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

6 j9 z: Q6 M0 g' `2 U. R
/ t1 b) N% x; d: Wset [trade-record-one] of customer item (([who] of self) - 1)
9 O- O. {- a: G- H9 H4 T9 ~[trade-record-all]of customer

1 Q! V7 G- B( D% X( y! G* p3 E, V! X% e. h1 j/ h
set [trade-record-one-len] of self length [trade-record-one] of self

8 ^  _, B8 f, a- s' E
. l* V) g& {$ ~' Iset trade-record-current( list (timer) (random money-upper-limit))

0 A3 e/ ]8 I2 f# V- Z# z7 W/ e3 L! A% Y
ask self [do-trust]
' _8 @& h' D' F( ?. `' I2 ];;
先求ij的信任度* x: i" K6 L3 Q% \* P6 \) L

: ~. A- r+ ^8 E7 @if ([trust-ok] of self)
! s  \  X/ E3 q1 A& Q) ]& p;;
根据ij的信任度来决定是否与j进行交易[
: d" `  U; `6 d: j4 aask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself0 L' g6 A& f4 \  |

- m$ `: R/ p) I1 Q, a5 b6 L% E[
& {; _. O! J' @0 g* ~8 P9 b- B
6 f- @) \9 g: m; m5 Z* r
do-trade

* T$ C2 C5 p: X( t7 n3 |7 \) h! K) a- g. F% V- J
update-credibility-ijl
$ i3 U  I0 u/ Q

3 x3 R& p3 ?2 n  e8 nupdate-credibility-list6 x, w; X" H, L/ [+ E- x0 R

: X( X, u# e1 C8 n- q/ w
% \1 I  j; Z3 S- y  \update-global-reputation-list

9 l- i: C- ^! g' {" x  f: F& v, c! I6 @
7 c7 x+ \5 `/ d% K1 @poll-class

/ ~: e) E  _/ D' l
1 _3 |8 L8 X5 V8 Y% _get-color

! H2 V& ~' Z7 {. X* O* x. S3 O. ]# m2 b& w8 G% N- I5 [1 N/ Z
]]
$ l  K- g. S' Z; e* X+ ?  f8 d: g; r: `
;;
如果所得的信任度满足条件,则进行交易
& }" p6 |7 b2 m( H
9 q" ^5 }: k2 q2 N( D+ d[

: j* f: z7 W/ J4 G3 f1 p0 p! L5 a0 @% C2 V( {+ q4 c: ^
rt random 360
0 g& U, N' h! {) \' K

9 b: l: ^8 D, A, o* o; {/ K% X! \fd 1
5 B' q, t/ @3 _
7 b6 a* O- ?/ j2 \
]
+ J( `# c/ h3 |4 W& C- r+ c
. R" W0 N7 x3 \5 P7 e! b
end
3 U5 g+ m: M! _

- U: y# b  U: ]) f( ~3 n. u4 Hto do-trust
; i1 M" r3 }" O2 B6 ~) jset trust-ok False
1 ~8 o  ], n3 {! c5 C$ }. ]+ M  g/ }% s% M6 L! |4 E  d
! s) [, T' S5 j  c. j
let max-trade-times 0- ]! V( k; U7 T2 Q/ }& Z* v
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]% O9 ~, d# w" `1 ?1 d" w4 G
let max-trade-money 09 ~4 d6 m- h( r2 }
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]6 ]# _" E4 e1 f7 D
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))* ~- }, o9 d+ \9 s; g! V! ^

' A# A- c" M: A4 _1 V3 @$ J4 U
! Z1 q! B( S: Y- X: N8 j
get-global-proportion
6 Q. O4 ?  ^3 flet trust-value& r2 }  Y; `* ~2 X+ H5 Y. i1 ~
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 W; ~. w* Z, ~) F$ M3 B, [/ [if(trust-value > trade-trust-value)0 o+ D1 m+ w+ v7 f% K1 f
[set trust-ok true]+ B! W& _! T  Z0 P( j: o: ?; [
end
7 h* U. p& i: }1 U  n
% k. c+ E' J: xto get-global-proportion
6 j6 u" r- I  d6 T8 vifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
5 `# Y6 J6 i8 q2 f* V0 n7 j[set global-proportion 0]
# x4 u* L' f9 [6 n) ^; g; ~$ c[let i 00 `; ]+ a0 N4 v1 L6 @' x7 r
let sum-money 0
& j" _9 ~3 n& t, Q& G2 ?  P* Ywhile[ i < people]! w* y4 _4 q7 g7 ^3 r
[
1 M, w$ H- D# gif( length (item i2 p. H' q. d0 p+ p2 Z
[trade-record-all] of customer) > 3 )

" h, f" ?& h! e% ^) R9 l[
& A' M1 u0 N; _# \8 p. o) Oset sum-money (sum-money + item 2(item i [trade-record-all] of myself))) d% w  J$ j% ^7 b; U
]
6 ?6 U& T: k+ _! z. h& [. i]( {5 F. J% w, O* |9 v7 m7 H
let j 0
- k, P. ~$ Y2 wlet note 0
) o. Z- @! h  I( p+ qwhile[ j < people]. @- O; m9 u* ^+ i% G+ @+ I
[
8 g- z) t, y9 Y: d5 {( e. Cif( length (item i" P2 ]" G- Y% N0 X) `/ E% Q, i
[trade-record-all] of customer) > 3 )

6 Q, D, O; h8 J2 b0 |[
( i" g, A3 G$ Xifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
4 ~- U7 u  K8 u; t[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
" W- [. k3 n8 V9 @0 d" R5 w% H" b[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]1 \9 v4 l: ~- p4 v  b9 h
]/ x# W2 Q9 q8 B
]
  W# T# I) S7 ~/ H% n! Sset global-proportion note, s9 f( b' |0 \$ i& B# f% o
]
  O6 ]0 e% C' w) z: vend+ M( }2 a! V; x

. k) Z/ D, ^" ]to do-trade  |  B( H' Z! i; A( h+ T, Y
;;
这个过程实际上是给双方作出评价的过程
% B0 a8 E2 s2 H5 S; uset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价! N8 ?6 {" t# O' }  [7 X
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价* w% f8 a: Q# x7 J' n% E
set trade-record-current lput(timer) trade-record-current8 \3 p4 J4 b; W+ W5 f
;;
评价时间' }$ U2 U( t. k
ask myself [0 R$ ]4 y. m+ A, |3 ~6 b% p* B! W
update-local-reputation
/ j  c" Q) \& W* L" {. V% |, {5 yset trade-record-current lput([local-reputation] of myself) trade-record-current2 ?2 J  T' c  c, ?$ P% a0 j
]
/ y5 m4 j8 F( r3 O- C. ?set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
# B9 P% ?. ?- [1 T4 ]/ e, y) z, c. w;;
将此次交易的记录加入到trade-record-one" c$ L5 h2 W. {/ }6 c+ l( u& r/ m
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)# M; P' i2 C3 \& N# n' B
let note (item 2 trade-record-current )
. D) J$ P  v- ?0 j) ~set trade-record-current
# j. p* `# R! B, @/ ^/ {(replace-item 2 trade-record-current (item 3 trade-record-current))
: N( L4 H, a/ p4 E# ?
set trade-record-current
; r2 r8 U% e/ N3 g! t(replace-item 3 trade-record-current note)- Z, K) v3 T- r) F3 T+ ~% Z/ w
; r' ?8 @8 u5 r6 `6 x  t5 }

" U2 h+ S% }6 d* p6 }ask customer [
) e: L" l1 e8 t4 Y* O) t3 o# Rupdate-local-reputation
+ x. F3 g/ l- _. j7 ~$ X4 P& M, sset trade-record-current
7 m+ |8 }9 j1 F* g8 U7 B, p(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
) C! P& c; G5 v: c3 `) O9 @* x
]) |8 \1 `0 x- X6 S$ R2 O! n( ]
3 N& ~4 I) q) H0 N- K( U- ?

8 Y7 H  p  y6 I1 ~set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
/ P; g/ c9 Z% \

3 x0 \, C# V1 {& v" I: l% \set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
6 Z2 P9 f* b# K4 n$ Z6 x;;
将此次交易的记录加入到customertrade-record-all: v" ^6 \$ W  s; [) d- Y- i
end
  G2 E+ n: S' d
# U3 `2 H7 L6 g# R: `: A& g- sto update-local-reputation7 K0 g% c# @# b3 W
set [trade-record-one-len] of myself length [trade-record-one] of myself  a1 R  Y( N+ ^

. Z# x4 H+ N/ c4 o
# K/ ?; O, M8 j7 ~* ]" Z8 Q;;if [trade-record-one-len] of myself > 3
% |' o2 i9 S) r7 q; s
update-neighbor-total& [/ W! x& A) B- A0 J2 t
;;
更新邻居节点的数目,在此进行, s( D, Q  @; }3 p, ?
let i 3
" J  R0 Q; f' V4 x" N% \4 D* {# M, ?: s6 T3 }let sum-time 0
% Z7 ?. N2 r% I  V, ywhile[i < [trade-record-one-len] of myself]
* D0 s+ T3 x, W0 c9 O: p* W[
5 B! o. L1 ~! _6 g9 {set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
3 k* K8 Z+ Z" u% p! i5 hset i" |' Q" y2 c$ v& y: J
( i + 1)
. K2 c' q6 v( x* B; y
]+ {; J! D8 U# u+ O3 d
let j 3
: S9 j) R2 s7 A1 qlet sum-money 0
+ M3 O5 S, R, [4 W) N( gwhile[j < [trade-record-one-len] of myself]
4 N' K- D$ k6 k! _8 d; V[1 c! `) s  B' W( u: N  }
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)* w; h, O* F; G# [; o0 R. G% d
set j7 m; R- b6 G1 Q* Y9 y
( j + 1)

' N9 s# d* m( ~]! T$ i. U+ g- Z) U# t
let k 3
. d' D* h/ c: ~/ u, W8 n0 c  m) elet power 0
! ]3 Z, y. C0 {let local 0$ ~8 K6 K8 {( ?3 f& k5 ^/ S( R- _) ~
while [k <[trade-record-one-len] of myself]+ a! V7 k( C# P5 t1 D$ {1 k& K5 k+ K
[
/ L9 j7 C- o+ x! ]) q7 g2 A" A# |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) + ]6 D, H4 G3 }/ C# G# V
set k (k + 1)
% R: b6 Z! i5 {1 Q1 U/ ~]& C- B# [% C8 f, M3 y4 _
set [local-reputation] of myself (local)
2 d) B0 M6 y7 M3 c& ^; I& Fend  U6 W* C* C! l1 H' n5 O. X  [. h4 _1 _

& x0 c7 K# ?6 B' ^. s0 d" S8 gto update-neighbor-total
( Z# R0 F$ A( U6 f
+ P% }! `: S; S& u+ {2 w$ mif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
' k7 v. Y2 _/ f9 T" f
' R, Q" {( C6 [. X2 ]
9 P6 Q1 N4 Z3 X& U; E& X5 f
end
! H2 n1 I/ S1 \4 C. P% H7 l  _3 z1 m6 z6 H# M3 ^1 j4 D# J
to update-credibility-ijl
" a& W5 ?, U& l+ g( u
1 o0 [1 Q3 T+ m8 z;;
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。
, e! Q! F% o- o0 dlet l 0
2 `1 X) w3 G& Nwhile[ l < people ]
! A8 D9 E& A( r; _; K! t;;
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, V& K/ z& D" c/ M
[' s3 T8 x& z  ?0 `+ C0 I! `
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)
: y" h: W: t5 O$ \0 R5 Mif (trade-record-one-j-l-len > 3)% L6 c4 `: u' n0 w. `5 T
[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! \4 ]# X) c7 h8 m* n7 c
let i 3
6 R0 |9 q8 w' b5 plet sum-time 0
1 b2 O0 A) f' U2 m( x) J6 hwhile[i < trade-record-one-len]/ b/ s0 [5 s1 T9 I+ t# G" {4 d
[
3 ~4 v$ _: i5 k6 X% X/ p. {set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
# v4 F( S% H# J( M5 Gset i+ x4 r% |6 Y  M/ M0 K+ I
( i + 1)

# h4 L' W, ~  ?7 W. A]
3 y" y9 n- j' E8 Z  q( D, W+ }. slet credibility-i-j-l 08 V% T4 i. g6 a& {: q8 S
;;i
评价(jjl的评价)
( x7 |$ ~8 P& L! Nlet j 3
: {$ l  e- @8 z7 U1 Y; }% Alet k 4+ t! D, |# }2 }7 j% O; ]+ O
while[j < trade-record-one-len]5 b, X% q* q7 c3 c1 z
[- C% I( b% a2 y, w) e0 B* L+ T1 b
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
5 h9 @4 c+ e1 z9 ]/ N8 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)% ~2 g) s+ m' I. d
set j" I6 \; V% M5 U* A" k
( j + 1)
) R8 Q! T6 m+ [0 ?$ `2 k& N' @4 K
]
; b$ W1 H1 \+ u( Jset [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 ))5 t% L3 R0 ~& x( @6 \5 T' j
+ q" C+ I5 u' u. I9 L5 C. V$ V
2 @8 a2 g. e  c$ g7 `2 U, S" \. g
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))* X" _  `; _$ f$ e( ?9 x
;;
及时更新il的评价质量的评价, T) g, U  l! O# `& Y( v, u0 B
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]; k  a  w* P- M. w& g+ f
set l (l + 1)% ~1 W# v6 c! M3 s! [& Q1 m
]) S3 r* |1 B, y& X, o. ~
end
8 I  X2 z4 q2 M) M0 [8 k7 ~
: f# F; F8 R% ]8 Q" O8 xto update-credibility-list
( k: w! n4 U9 M# k+ Nlet i 0
5 l# T0 v5 Q8 S& R6 J5 `- Owhile[i < people]! x; n  ^- Z" H
[' _8 t5 J  J. O  o7 p
let j 07 x/ k) F" A# \7 f
let note 0
, |4 L3 H, L5 M1 {5 Wlet k 0/ |; F3 K( t, F0 I! B6 C$ G
;;
计作出过评价的邻居节点的数目
4 B8 U$ D4 ^) C* y7 |1 cwhile[j < people]% j5 @+ b4 Y# s) {
[
. p; E. w. h& ]* }4 O( b  [- b, iif (item j( [credibility] of turtle (i + 1)) != -1)
: d# V" W; T) s& ]% M5 r- R+ ?9 Q;;
判断是否给本turtle的评价质量做出过评价的节点' f0 @- l9 @5 F. [6 R
[set note (note + item j ([credibility]of turtle (i + 1)))0 i* h. C* l3 S( t
;;*(exp (-(people - 2)))/(people - 2))]

5 Y- n1 u/ P6 _4 g& j# ]4 \set k (k + 1)" h) w" y! t# E, `, W% Y
]$ m% w3 B, k# b! z. Y9 Q0 A
set j (j + 1)3 z2 f" s+ [+ W. q- [9 i- y# I4 e
]+ [4 q* M2 N! u! ~( c
set note (note *(exp (- (1 / k)))/ k)
* p; D8 Q" u: p1 U" J0 h0 Yset credibility-list (replace-item i credibility-list note)+ E# a' j% p2 j, k; D* c
set i (i + 1)
5 z1 S: g: t" c7 a% V; X: F1 P2 o]
* H8 W7 {: w" B7 r  z2 g) n) }& rend" ~$ W, I3 p& r& Z. b, X3 ?
* C6 w4 w. w) l1 U0 v+ K0 z
to update-global-reputation-list
5 P9 V* u8 U& {$ xlet j 0
( F2 J. W$ V. [' I! L4 |while[j < people]0 F1 r# d( x# y9 J/ X. F6 O9 ?
[
, O% e, R8 C5 J! Klet new 0- p1 X6 u4 O; S9 G2 {2 r, d
;;
暂存新的一个全局声誉
% b3 A' o/ P2 M; Slet i 0
. o3 W3 A& U8 n# z6 hlet sum-money 09 \0 t  Q! X2 H& m6 h8 t
let credibility-money 0
* k0 n* Z* I4 L/ [. ?while [i < people]
  _. D/ K9 l- ^0 D/ V[4 o. F* V! y# J$ u& O; s% L; b
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
4 I$ \+ V) z- C% k! m- Iset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
# l+ \% ~( V3 V2 V0 Z. C1 D8 ?set i (i + 1)
5 C' c, U; V6 ~4 |]
+ f% |3 r8 \" ^let k 04 X) y9 H7 i4 F& W) V0 v. A( L
let new1 0
! i# w6 z, H: Y$ Nwhile [k < people]
+ S2 M1 w, U/ T( J* i' {. p3 H5 s; a+ d[
8 X( {! w  A9 f" M3 F  uset 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)
( c6 P8 m; }& c& y( S4 Dset k (k + 1)/ z" {$ \' ^- U( [% B
]
9 `) ]9 |8 {7 aset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
1 o- [( k- A1 `set global-reputation-list (replace-item j global-reputation-list new)
7 y. [& {& W  c  t0 A" [& {set j (j + 1)9 K6 L, O% {1 A/ c! `6 n
]
1 k9 B8 n8 T* G- l3 f# [6 ^end9 z) j7 |; H; ~" Y2 Z$ p+ ~' g
" l5 K- e! j: G
" I4 y! n. Z! ?: k0 H

$ j) b/ G0 }; N& h9 ?& I1 i* d5 Qto get-color+ |' ^: i5 E- g- F
9 w1 H. k% g1 X  r2 S* l
set color blue

# L' M8 ^. v2 N7 H! yend
$ r; O+ N- Q' Q; Z* P# d
- H/ I5 J  Y  ]& n2 J' ]( Mto poll-class$ m3 N( ^5 [! g/ H' H" s
end
' _8 o4 W- L* H  ^( W9 K' [6 t/ t2 F+ I( p# P" ^
to setup-plot1
) k/ o* L3 n6 Z  [0 f* T9 G4 P) z, u( i1 A6 g8 |" Q
set-current-plot "Trends-of-Local-reputation"

, e& {8 T) |* h
/ U" \  G% [; [7 a3 Q$ F2 c9 fset-plot-x-range 0 xmax

" m" [, ~) h# w+ l, e1 ?) j0 b% G6 a4 C6 r2 P
set-plot-y-range 0.0 ymax
' N! \  I8 n: x3 Q' {6 o! v# `
end7 k" P+ d8 y* b2 c" }
0 X8 c& R9 L$ E. A
to setup-plot2
* F& L# Q' r5 g; c  b, U
' R0 p( d- W. W4 c8 A. rset-current-plot "Trends-of-global-reputation"

$ _5 a9 a) u3 r" O
+ B& j9 I1 |/ z) B- a+ Aset-plot-x-range 0 xmax

3 r1 n. \8 o  A7 P3 x8 g: _" ]/ z8 j
set-plot-y-range 0.0 ymax

; H6 Y% y$ s7 e) Q" dend
8 l7 @1 F% d( O, k: ~
7 ~' X" A* a) K2 y" h0 Wto setup-plot3
& |. @/ X2 ]+ u) `
- E3 B0 A. Y+ E4 m& vset-current-plot "Trends-of-credibility"

: M$ I& e8 P! \
! e. v  O) y4 u/ \# q" Vset-plot-x-range 0 xmax

0 B3 I* N( l" T2 r( o$ R7 A7 i
. q/ G% B1 e+ }, V1 x! Oset-plot-y-range 0.0 ymax

2 G8 F6 r! D2 k0 H. w5 r  Z6 X2 dend: B# r8 C9 w" U
8 ~7 N" Q5 O+ l2 q4 _1 C9 w
to do-plots7 T9 v6 g2 j) H" @4 O/ @
set-current-plot "Trends-of-Local-reputation"
) f, C  f- T' f$ J8 X8 Vset-current-plot-pen "Honest service"
# o2 e# Q( g/ b+ w* _% Y6 @3 X3 {' Eend( }+ h( n; |* m* U6 f1 j( A

" w( A5 }1 @& y3 N5 o[ 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.0 X; B& y" L5 q1 y" T( ]2 T0 p' c& m

6 N7 g3 h" j( H* 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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