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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:
' Q0 r& `* y/ n5 a4 @! H2 y0 Oto do-business
) s5 M+ j: S$ L7 M: \' n& w- D rt random 360$ u2 Y2 G# E1 O; ?2 q# z
fd 1, B3 d- y* J$ M% K5 c& c
ifelse(other turtles-here != nobody)[
1 W- P1 {/ e  U   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./ ?$ A5 T, ]* A( I2 f7 H, M
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
6 J; @+ y2 ]" D4 w" \   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
9 v9 \3 w) y: u- e. O$ g   set [trade-record-one-len] of self length [trade-record-one] of self
  G3 ?6 B' t! ?) J   set trade-record-current( list (timer) (random money-upper-limit))
0 C4 k! R" z; z  a: [0 o% V
# H' c# z/ d' U5 R! d- M5 t问题的提示如下:
7 H) M* F4 X8 ?4 `: S0 J- T/ [8 k, P; f6 x3 d
error while turtle 50 running OF in procedure DO-BUSINESS
4 A# m7 ?% ~6 l7 }! Y" g3 I" F0 j  called by procedure GO
7 b; z/ t! M: ^) H6 H- s2 vOF expected input to be a turtle agentset or turtle but got NOBODY instead.  t6 b, f  }3 }1 [: M
(halted running of go)! H0 j" J8 k2 \2 G* R2 C

% t4 k$ }2 ~1 p! V5 ~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~~
( k; J, z' \* s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  O, x7 \( X4 v% R% f
globals[
. @  E; c2 m6 f5 bxmax6 v4 E; `4 I, }9 i% \( c  |
ymax) x9 K" z0 _) a
global-reputation-list
- X. I+ w' `8 x5 G7 K, e: {: M
' Y0 o  a- |: a1 S; n, s+ \5 w;;
每一个turtle的全局声誉都存在此LIST) ~0 [% s1 z6 {/ ~1 Q/ V6 u/ f
credibility-list
  T, u6 c* W8 ^1 w# p;;
每一个turtle的评价可信度9 y7 X# c, e7 Z; h
honest-service
7 y, [7 b& X, P9 F- ]unhonest-service( C+ _; o) F6 C3 ?
oscillation
9 g1 H! Z: l6 j, Nrand-dynamic
, {' K5 b& i, w, c]
" c/ l! N: F$ y4 j+ y* k0 B3 T; B
turtles-own[
( \9 x% H' C; [$ \/ ~0 e8 w! strade-record-all! A8 j$ C5 W$ L+ N
;;a list of lists,
trade-record-one组成* ?3 \. g1 k8 Y* P9 v/ M) q
trade-record-one
; P6 B% }) `5 s& W+ K;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录# j" }* \5 @- T4 S" h4 v5 S
6 {2 a3 ]; m" I$ L! Z: |+ F
;;[
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]]
$ q0 D4 S6 c( c" L+ r" o9 Ktrade-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]
  x/ ]% n+ g! F+ I  qcredibility-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list5 @+ c6 T6 h7 v6 k
neighbor-total5 h2 M2 `" A/ R& A; K# K8 K) m
;;
记录该turtle的邻居节点的数目
+ [* }5 ~8 o/ l9 ttrade-time( r4 o6 }8 N; j- G: J
;;
当前发生交易的turtle的交易时间  [7 V% T, L0 N% y* m
appraise-give
6 Z- b* b3 [% ~" G9 H* q, ^1 G;;
当前发生交易时给出的评价( m4 P/ A* ?' \8 C2 C
appraise-receive
2 R- u0 x  i% p" k: l;;
当前发生交易时收到的评价2 [$ h7 R  d4 X9 p4 t: v* J4 u% O2 R6 h
appraise-time
4 ~) o% {3 n$ c" Z;;
当前发生交易时的评价时间( H1 X  z. C% J& R) m3 k
local-reputation-now;;此次交易后相对于对方turtle的局部声誉- o4 Y' B# \$ a% t& B# m' E7 F
trade-times-total
9 X0 ~9 d  ?# i;;
与当前turtle的交易总次数
, x" X" U8 C( B! B, T5 _/ c# atrade-money-total
6 M: S6 i4 ]! P! ~# M;;
与当前turtle的交易总金额
* ]1 ^' s: A' o# |' C/ Flocal-reputation
: V; D4 a! D' Jglobal-reputation" C  Z% P2 w. H2 u. e- J) q
credibility
5 B* y9 ~) x- U( _+ n" k6 V8 B& W;;
评价可信度,每次交易后都需要更新
6 o* J* Y% G5 D" h9 tcredibility-all$ W* u( E3 Q) [/ _& F
;;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
0 M+ Y. `# X. I4 v
' V2 g# s# c$ A;;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/ C" a$ R' f; o! o4 j
credibility-one# S! \7 t" J6 w" f2 s
;;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
! u8 I- T) D' e3 fglobal-proportion! z4 r$ I6 L  S. x9 w0 ]" H
customer
; U( Z( p7 ]5 |6 x" bcustomer-no
5 ]: x) G% b4 K' Gtrust-ok& X0 s; T. Y7 i4 n) v! J3 X- S
trade-record-one-len;;trade-record-one的长度
) L' ^4 v( f/ Y5 K" O: o], }+ C$ }+ l' A& v  J5 z$ L

' B& a  V; M# b6 c% S! _: q  n;;setup procedure
9 `" N) U$ b9 k1 c; W, Y* E2 H* C6 b% |6 j; m
to setup
: B. F0 Q2 U1 w! z
/ {# `, P& j  c! yca
6 _! Q4 ]9 ?5 n4 ~1 F
* f1 a, ^0 G7 Y7 T
initialize-settings
+ a/ U+ t. `" [: r1 i4 i3 Z
: `, T' ?4 Q# k7 Z" r+ f0 @  z+ @
crt people [setup-turtles]
7 ?7 A$ h4 Q. `9 P6 |8 C7 M

" Q$ f. |7 l$ H% e, C1 {" qreset-timer
( [0 N& ]9 `; A' h9 c

5 u, }. }0 G- k6 }+ `' Opoll-class
8 T8 P+ j; J) H

- G, d  m, Y/ h: m: hsetup-plots

  a2 q( A& M/ t' E5 i# n
3 H3 c7 u! v4 y1 q' `2 }do-plots

) d" j/ o0 m3 T# ], P& |end0 @' B3 i% ~, i  Y+ j

, w( U( M! }! r* B1 oto initialize-settings. C% @3 q' H) q1 V$ P! j

! Q1 h- c" d1 M; c' nset global-reputation-list []
( |: y5 P: w% i
3 i/ C+ }: l( ]( [7 \& i; a
set credibility-list n-values people [0.5]

! p2 Y* S! w& G# ^* t: a/ J8 b
2 d; o0 Q6 @: uset honest-service 0

, _& d6 u& c, v; W0 V
! _" K5 R  D$ W/ gset unhonest-service 0
( ~; q) N$ `6 g: t% A8 v+ R5 E

2 h. ]# G' d$ ?9 R: y" dset oscillation 0

! F7 q1 }* B; X5 I8 \* o2 C/ \3 s* X
set rand-dynamic 0

" Y# y& p4 \1 F4 g7 \; jend# x5 B- ]0 [+ b, d7 ]( m  m

+ u6 Y% @+ v& E; [, f: I; `) ?to setup-turtles
& |# O* _2 U' Gset shape "person"2 X. o; _% g- h/ f& V7 Z
setxy random-xcor random-ycor
! x  N/ i' s/ i( I4 j: ]set trade-record-one []- ^8 |" a% k$ h# {5 I  _
( ^) z" ~6 G+ T5 Y/ F5 b4 @+ W' m
set trade-record-all n-values people [(list (? + 1) 0 0)] * y, X3 }$ M  A; y) _
7 P7 r) @$ Q+ q
set trade-record-current []; K0 s* Z0 U1 T! @4 ]* Y
set credibility-receive []
1 ^4 E- n& h' `. i2 Q, D9 h7 pset local-reputation 0.5
4 B& c9 O7 d. x/ gset neighbor-total 0; h4 D0 e6 Z6 D* i2 a2 Y
set trade-times-total 0  O5 F/ V/ T+ Y0 ]/ \* ?4 N
set trade-money-total 09 B5 \# w3 x" j  s1 g
set customer nobody
  o( c  B/ r! j4 Aset credibility-all n-values people [creat-credibility]: f" _3 C- `1 G. u; R
set credibility n-values people [-1]
% S6 Q- U1 }4 }; P; ^! n( ^6 _get-color/ s, l  G3 E, U* L( @$ i
' ^1 I! a) Z/ i8 h& B
end6 C; Q- ^0 [/ v4 T. a( V

6 T% Q+ B, t- O/ P2 E9 n" Nto-report creat-credibility
. P8 L8 m) {' ~2 w5 r! Treport n-values people [0.5]* h( ^" s$ s) _2 f2 z
end8 L5 E4 y; d. f7 H% o
: k9 i5 `1 s$ z/ h1 ^- _9 k3 t9 D: e
to setup-plots
+ n# [; G8 C7 D( S/ ?( G- H. q- J( Q5 @5 X
set xmax 30

& Y: O! e6 x; }- z. e2 g4 C
7 V# g5 B& e' J- M( C/ W$ bset ymax 1.0
# {" K. B/ r0 g5 n
4 n0 `$ {- t9 M
clear-all-plots

7 W1 q5 I; }7 J+ x" n: C% T1 W" j" M+ S! |. ]8 C4 W
setup-plot1

) v2 D3 t7 U8 q$ F! R7 K
( H3 x( V( P) g8 b( ]4 P  }setup-plot2
6 ^+ R1 T; ^, q: F4 A7 n6 _4 j

% r7 G6 N, H+ f9 p: dsetup-plot3

/ D0 ?5 O: E: dend; x8 X( }6 T. L: F# c

. Y/ K/ }3 m9 U! E3 ?;;run time procedures+ s2 W8 J9 R- ~+ v/ Q5 |) t

- G4 b* O3 x' a! ~( Q& pto go
) M' r& O1 f6 B4 n
& Q: W: o. W. P# ^( m. M) X0 Kask turtles [do-business]

9 Y+ {+ z) A$ K, Y/ Nend# g# {4 H7 h8 b) O$ |6 F, }. M

  q" ^4 P+ e# d" ~5 Z$ J6 S$ q4 Mto do-business
& ~' r% A( W  |) x" N/ u: i
. `/ s1 N" z" H/ U  n

' P/ g& \4 D8 e/ F& d/ E# srt random 360

( J( S% m* H9 m8 A0 B5 q' I1 v/ k* s) ]2 q( q7 e1 }. }# B8 J6 g
fd 1
, N8 D& S' S6 m0 ^- M
& c, G; B7 B" U6 L
ifelse(other turtles-here != nobody)[

3 ~% q) k, ]# e- ]* j" ^6 s5 X& S; x' u/ R9 p' e
set customer one-of other turtles-here
. Z5 Y+ N& G9 A1 i

5 k9 z+ h' V  L) U7 V* t;; set [customer] of customer myself
" y3 F- Z, I1 P- D% O6 C# C

( |, y' z& [# `1 Z- K" Yset [trade-record-one] of self item (([who] of customer) - 1)7 d2 D2 R" a7 g+ d: ~- X$ k
[trade-record-all]of self
9 f2 J' D# E2 \9 o6 p0 j* B' z( S;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
" ]/ x! a6 u4 J8 y2 Y
8 J' e) k3 o. `5 W- L$ j% L. B' J
set [trade-record-one] of customer item (([who] of self) - 1)+ h' b1 [. r5 Y* t
[trade-record-all]of customer
. p1 J! l9 E' z/ ?% _

  h) |- x( }* W+ U* K  _: zset [trade-record-one-len] of self length [trade-record-one] of self
/ D3 \6 d/ q9 K# p" U' I/ Q

9 x4 F$ y1 i5 V- M+ ~- b4 Pset trade-record-current( list (timer) (random money-upper-limit))

) H$ i& l  Z) N3 n8 T; `4 g* `
# [7 w& c; Q, n' v; task self [do-trust]
5 l+ M0 P8 P$ R;;
先求ij的信任度
' d8 c/ W; o7 |9 E5 s# t" K0 \, \
! k& U6 h/ m' M) e" j, Iif ([trust-ok] of self)
1 t1 ]3 v& D' E& b( {;;
根据ij的信任度来决定是否与j进行交易[% p' s1 ^6 K6 @  I! Y$ d
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself8 x0 h, D: F' K: E. A

4 y6 K/ R* L  O1 L7 \5 G1 v[

8 H/ R; l4 F5 {
7 ~3 \. Z  \, e/ pdo-trade

: S) _* s: r+ t" c1 U
. b; ]" s7 A# \$ d* J$ gupdate-credibility-ijl

  ^9 \% F: b, Q$ B( T# ^
! `* o# f" L& z+ Y3 P4 b( v! gupdate-credibility-list
/ E( |4 v/ d5 a) b3 [

+ Q# P# t( \" b0 e- {" m. r) m) j+ F* ]8 o
update-global-reputation-list
+ f3 b9 G6 i: N

- _' a3 P+ \$ Tpoll-class

9 e* |, p, w; X; o8 z- E- }" Y5 w/ T
get-color

+ r) }; [3 m" t& f2 j" z& C4 z8 \/ s, M. b5 k1 m
]]  U; J9 r* m( a/ z2 ]" ~) u& q. A
0 V2 D; h0 f. k
;;
如果所得的信任度满足条件,则进行交易2 h# Y# f5 P6 r  G+ y0 e: F+ D; `

; P" O6 z4 c/ \# }6 z7 o[
7 K: g/ c5 |/ U2 q% s/ t  M

4 @* U) k( p1 S' Art random 360
9 V( O- h6 S! d. h5 y7 V

0 ~6 j- X! a  M6 U- ~, b6 ]$ |! p, wfd 1
& R9 N. }% n( @8 n) F1 D8 V+ {

# M( ]" p+ j' O( U7 q) K/ n2 T- e]

8 i1 Y( X) ~1 Z
( ?' F. C( c3 J" X- |( {* a* Fend
" l( Q* h5 b1 I3 ^" R2 {, s# i
0 A2 R7 i/ Y" c0 r1 X4 g; K
to do-trust + V% p4 _" u' D& O
set trust-ok False
$ ?- F4 N% D  `% P: C6 b% H, H. V% l9 X$ Z; Y% q

& S0 M: v3 A% Q/ M: O8 k+ jlet max-trade-times 0- [" g) r4 E3 x5 ~3 _
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]1 X, T/ |  O; K. |; y4 t+ Z
let max-trade-money 08 }+ H. }) M# P
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]2 o: P' L2 a( w+ v+ n4 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))) j% v0 l; C. @/ a

4 u- M- e4 r& _5 x& k& d, ]0 H2 }/ m( r

, J5 k' O" f* q& ?( t1 A4 nget-global-proportion
9 O4 z9 O* P8 [  n  C# Vlet trust-value
( o$ ^" H4 u/ f- Y5 Dlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
# ]) J, \/ b1 O9 a" {% E* ]$ v' s
if(trust-value > trade-trust-value)% o! }3 |4 H% |: R
[set trust-ok true]3 f( Z+ Q$ T, \1 P* H; z4 d
end
1 a, a4 V* z0 y
/ m$ c( d7 _1 {3 v$ ~3 vto get-global-proportion" a5 |; w5 a  e! O$ j; V2 `; V
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)* o. A2 b% l- n
[set global-proportion 0]
+ f- t4 D* Z3 Q! e4 `) ?% y) K[let i 04 g/ G0 n% \* Q& ?5 X& p9 t
let sum-money 01 M9 R% [$ l+ ], {' L
while[ i < people]2 V4 M. R$ {; w8 K1 ^
[
/ C  |' I9 ^" L9 ?1 e' wif( length (item i
, D1 {5 [; m3 o( A[trade-record-all] of customer) > 3 )

3 Z# x$ H$ [3 G( v0 _( a; l+ C) w( |[8 p4 S3 L) T" N' u9 [
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))2 C9 Z  F0 b7 s( @. B1 c* i* P; O# H
]4 e4 x/ X9 f; ?5 U, t
]6 {1 o. \, I! @: q
let j 0# E. B) T6 @4 v$ X! d. h) W
let note 0
, Z3 G" @1 v% {! Swhile[ j < people]+ A/ `% p) w  V/ F
[
- q4 p/ j) y6 z1 Lif( length (item i  U. K1 G& f$ ^* Z
[trade-record-all] of customer) > 3 )
6 f. G* ^$ f; u! S2 p- P  f
[
: F" q! B4 c% g2 |& n2 kifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
) N6 M# J4 X' e% m: o[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]7 Z+ p1 B6 d5 W& l, w
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
6 g# ~. M2 K- ?; Y5 |4 j8 Q  ]]2 y; l3 U+ s( E: e8 L% ~+ V! q6 b
]
9 v' O. o$ }) H# |6 [set global-proportion note3 j' j% c8 M# I  r; K
]- P2 y: G# H8 h' [7 I3 m+ f
end+ @# ?. J' }2 `- T$ s9 W2 o
( {  I' C% E1 Q1 w; O
to do-trade8 ]& o: n! d; T) h9 O% L
;;
这个过程实际上是给双方作出评价的过程9 W" u2 X: D" h# x3 w& o: i8 B
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
  r  \+ b" z# i0 fset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价& M! |$ i: ~& V; B! b( y$ v" e' [
set trade-record-current lput(timer) trade-record-current' d, N3 R5 T9 U
;;
评价时间
% ~+ ]( G; \, v" eask myself [! V$ {' j+ _# F8 H  x8 p: ^
update-local-reputation
% b- i' z' T9 O5 V) pset trade-record-current lput([local-reputation] of myself) trade-record-current
1 Q. S9 ?: k, L1 Y- f9 M]
0 d5 o$ E: h3 |set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
1 v5 E  `2 Q8 Z;;
将此次交易的记录加入到trade-record-one' g$ ^: L1 _+ C& ~, T
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself); X  H3 T  f2 z0 i* o/ ~
let note (item 2 trade-record-current )
- r& O; P/ |9 F5 g  @3 P# zset trade-record-current
; l1 l. x! X8 O$ A; L/ ?, u) X(replace-item 2 trade-record-current (item 3 trade-record-current))
! l1 }+ ~: A; W4 ?5 T' u
set trade-record-current
2 y; x( \' L) ~! `! u% w  T. c(replace-item 3 trade-record-current note)+ H; P, S( X) C' c& ?
/ ^, w$ g9 @8 \6 h, M* {3 Z. w* q; L

$ ^* B3 g0 i0 ]* Q/ t( {. W# nask customer [/ [  M0 j/ P0 H, x
update-local-reputation$ \1 d; T! y& o% G
set trade-record-current7 |9 p  m! J0 e+ S2 F
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
4 z8 V% X" |, W$ }
]1 `; u8 ]. B/ I* c6 x

" J& {2 Z# o0 k2 y2 V
" n+ C, L6 p  X: `
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer; f: |4 y% g- a1 s8 p

4 f) E3 j' [0 A+ Z7 p6 rset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))3 S  p1 _1 O9 D/ j* ]# o* [& v$ z
;;
将此次交易的记录加入到customertrade-record-all
' l, ~7 s* O: ^6 y/ mend* `* H( p  Q6 Y' e1 E6 Z1 X0 Y
  G$ ~& N, G* o: s
to update-local-reputation( J$ a1 U3 X0 G/ g* @' c
set [trade-record-one-len] of myself length [trade-record-one] of myself
! Y; x  u7 J. Y' H8 V5 A4 i1 z5 F, ^

  f/ O( Q  n4 o) f) d;;if [trade-record-one-len] of myself > 3
. Z& O% e" G% U6 [7 w! {; ^
update-neighbor-total
0 V6 J$ T; {2 ^1 K7 H/ J0 [' ^6 u;;
更新邻居节点的数目,在此进行
/ x* U6 T2 O" k4 F' _; hlet i 3& |: F# Y/ _9 B6 F
let sum-time 06 u1 u8 r% [+ I3 v$ |2 R  r
while[i < [trade-record-one-len] of myself]7 E3 v2 F- ~3 f" y' F
[; Y0 W2 L% B/ l6 g
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
- |9 S* k8 i# ?; b; ^7 R7 F& Oset i
) o% Y6 b# |) f$ R) S' d* V8 X( i + 1)
( J$ Q" A2 c7 |9 v& M2 n3 h) J. T: T" l
]
, D* _4 M" ~/ h. C5 K8 [. p* vlet j 3
2 [- Q9 ?! S5 i) j$ L; olet sum-money 03 P  {* K! ~1 t. `/ a
while[j < [trade-record-one-len] of myself]
, g! g, V5 ^3 h5 ^[
3 i% {* w% p4 Rset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
9 O6 c, u9 f- Gset j  X' {. H0 S: o2 I% ]
( j + 1)
, d  C) i0 y2 ?2 n9 _2 G
]
5 x5 d3 @* U# n/ d8 O) q0 Alet k 3
( S( s* a& X& U$ |7 y( flet power 0
+ ?1 m0 e& X/ C" C3 `( d7 zlet local 0
7 q% n+ A6 [  N# [% F) |6 ywhile [k <[trade-record-one-len] of myself]( v' Z1 U- R% m9 P
[
# l( `/ J8 F! j5 Kset 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) , E6 D; J0 A; Y8 S3 I
set k (k + 1)4 p" f4 z! i: b  ]
]3 m" C3 |/ E6 x! o. y* R
set [local-reputation] of myself (local): M# w5 S2 }( ^8 T! C. s; S- K, @+ y
end- B# Y+ g; h# p0 b2 m" q4 k
* K3 {  {6 e  l! S# e5 r6 X
to update-neighbor-total
/ P- J& c) u4 b' ]1 t1 z: ~+ }2 P+ l7 \9 S! ~
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]- M, o, N; ^3 k: E0 h
( v- j6 o* R6 N1 M9 M
& }0 |( f0 U; p; O) c/ C( X
end/ q0 T; b8 Z9 J" J

  Y% _. x6 p- K7 rto update-credibility-ijl
- a9 W$ D+ t( O0 `) b. p5 K9 P; W! s+ }, `
;;
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。
% W7 N1 z' X% D' elet l 0
9 r. u! K# E7 Ewhile[ l < people ]) q7 i) q& S% i, H
;;
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( h+ L) {" {0 v6 H
[
! ~1 h# u: t' N5 L: nlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)" k/ V9 e5 U7 }; b* u4 }
if (trade-record-one-j-l-len > 3). f9 l8 p! k) P+ ~* X4 s, ]! Q
[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
" ~: d5 r1 }, F  l" ~- l. Hlet i 32 |3 e; v, f7 a4 m" C7 z
let sum-time 0
5 f. q5 d2 F! iwhile[i < trade-record-one-len]$ D0 I0 I1 u9 \6 E( G
[
% f$ y; G3 Z8 g' O6 eset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
% ]! w8 {8 k1 a; f0 Lset i9 t1 d$ t% N3 |2 O% Y+ U
( i + 1)
1 `! }) q! E  @' l+ B7 l
]3 ~" i. v( d2 R  X1 t% m
let credibility-i-j-l 0. S. g2 i. i! ^! O/ l
;;i
评价(jjl的评价)" a1 Z# i& f3 V
let j 3: P0 a3 b. C6 U& @& t
let k 4! o8 R8 H1 l2 }3 Q& [( J9 |
while[j < trade-record-one-len]
5 R; X9 u; a8 N/ {- a* f( X  m[( ], [4 h" t- e' s  G' r& H
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
0 }- V4 b+ [8 b" Yset 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)9 h. \1 S8 e' m/ U: j
set j
1 i9 ?( \' K8 n3 E( j + 1)

4 L+ [9 W- w8 w: q! W]
- ^) r% |9 A- q4 U0 W) {+ t3 {; ~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 ))
' R) U  @+ i% g4 a9 M/ h
# t% `; G; U/ }9 \( Q
8 |9 Q% L6 M* u4 l- S9 b
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))1 L: {/ F  Q0 d  j9 M
;;
及时更新il的评价质量的评价% v5 h3 i' ?' J: C5 b
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]$ w7 E8 @1 B5 _
set l (l + 1)
/ x: K1 @6 w+ ^% o. k0 x3 R]
5 R4 a9 }/ Z1 Nend
  t8 u6 S  q- z) v9 Z2 {8 ^& A) _1 d( X
to update-credibility-list
8 H$ k1 g: c, |- _let i 0
1 I$ w+ q  s4 kwhile[i < people]
/ k8 t) a4 c6 w: M[
) F9 `( G7 ~0 Y0 H5 `let j 0! v" C$ d2 z. }
let note 0
" ?9 l1 _$ a+ \" Z6 l4 l* `, wlet k 0% }3 y( B' Y' z# A' X
;;
计作出过评价的邻居节点的数目  b: `/ R: ^9 v6 t" |2 c4 O- }
while[j < people]
. Z1 c$ @7 J% T[0 R. @$ T# ]7 h7 Y
if (item j( [credibility] of turtle (i + 1)) != -1)& A) G2 P/ w% [$ f4 }$ ]1 e
;;
判断是否给本turtle的评价质量做出过评价的节点5 e6 g9 h1 I7 }4 Y
[set note (note + item j ([credibility]of turtle (i + 1)))
! i! E- Y. h, l& w. o4 R+ @0 i: V$ O;;*(exp (-(people - 2)))/(people - 2))]
8 \# I  `( O9 X5 |# k# a, u
set k (k + 1)
1 x' a) J" J( Y$ g9 N5 m, k+ h]. b' E" K) W( S% Y# E5 r
set j (j + 1)& ?) a! w6 {6 m3 j: f. m( N8 B
]% P! [7 P* ]1 W2 ^
set note (note *(exp (- (1 / k)))/ k)7 a( u- {. a  x  p% v* e
set credibility-list (replace-item i credibility-list note)+ X, b: _' s2 c. E
set i (i + 1)
) ~0 T! V: a# Q% s/ V" r: I]- j8 j) ^0 `8 v; ]
end. l  N' f$ ^3 i. }
2 c  {5 E  _" ?' O  E$ s
to update-global-reputation-list
3 O6 P6 b+ V, f  elet j 0
, L* }. O' @  ^while[j < people]
* U: F7 f: ]5 R  \3 r# I  V[
6 [: S) c+ s3 P! X: slet new 03 a6 b( F7 }" J& r  P4 I) V; G
;;
暂存新的一个全局声誉
/ o7 x+ F8 K, Q3 Ulet i 09 t0 S- K) H0 V9 r, n2 C/ E- v
let sum-money 09 g( W6 C( d3 I: x
let credibility-money 0/ f7 V) Y; M% \) U
while [i < people]
0 n( l, P! [& z( P# K[3 p, f7 s2 c8 Q( X
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))2 E& B' h& O! h- P; X3 G, U' q
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))! T! `* S+ J$ E6 H5 k
set i (i + 1)1 Z' E  h: D4 A% ~) A1 Q6 Q, \
]
, l2 C8 m# Z7 Y9 B" I- P. Elet k 0
! t8 f$ j9 `. L1 M- klet new1 0' `- _3 K* @, ]' t) J- T
while [k < people]
# S! H/ \- v- ~[
- R2 S0 I2 v1 X2 w$ w5 L2 sset 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)
. {! p' N. u: {* Fset k (k + 1)
" m: X9 q( h$ P]. L, B, H7 `, v6 \* k1 N, @$ i
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
" b' I( t0 e& @: N5 [1 iset global-reputation-list (replace-item j global-reputation-list new)0 k7 r4 H* B' a% ^- V0 Y! V% j
set j (j + 1)
1 X8 ~- ]- ~) f2 k]
: G- n2 ?: W$ Q# tend& ?4 L0 e7 e: G$ N9 C) @& ^

, |/ ~) q4 }  G# T! c
: v% v- L& X1 o9 F6 s7 v6 Y; p
, Z8 x* P" B4 t1 @5 [to get-color
, m8 w; E% M5 A: P8 U  E; z" [! S" s: k" A, C
set color blue

" F. B. U; K8 O& C' p5 Jend
8 d5 |% {6 {7 B5 S9 b
8 g# x! R$ P9 B$ }to poll-class1 d) {7 ?. h7 O
end8 f# I1 W; s6 ]+ F' o% b
5 @+ `& v* Z( W5 x/ \+ [3 w
to setup-plot1) u$ c5 t3 z$ V! L% _
9 }( s7 l) x: A8 S6 {. p
set-current-plot "Trends-of-Local-reputation"
' y6 [8 T# ~3 ?) \: g6 E. X

5 h. i9 u& w% d. Cset-plot-x-range 0 xmax

, l! S$ w6 }6 y0 N# i, M+ H8 ?" |. Z5 T( y$ c
set-plot-y-range 0.0 ymax

. b, p4 h" b( m) I. Iend' c& V8 L. A4 Z! w4 Y, {. `
  @  r  y; F, ~- E+ U
to setup-plot2
1 s1 v9 X( W5 h& L5 q: F3 v$ f  ^$ T" B+ Z; r6 k
set-current-plot "Trends-of-global-reputation"
) S) s6 C7 j2 ?; ?9 x" H
! A; V! e5 X+ D$ Q$ V
set-plot-x-range 0 xmax
. {# ]  c9 ~8 R" n
' @  o: s# A3 K
set-plot-y-range 0.0 ymax
* M2 F( e; _5 c& x! K9 w
end7 G5 J* o1 o& O+ o; X8 B8 _

$ ~; R, R8 @. d, B, O( X% Ito setup-plot32 h% {  Q/ ~! A% ?; c3 ^

) u, `- ]0 l# ^: n+ w! N2 C" Oset-current-plot "Trends-of-credibility"

# S1 f2 E; X/ p& ~; p" [" b2 y6 h" W8 ~# X0 G: h8 O- B
set-plot-x-range 0 xmax
+ p( T; y) m+ F5 C: V
! }! l6 P# k5 h. ?8 v
set-plot-y-range 0.0 ymax

: r: k: G: t; Hend
' C: w1 ?6 x5 P8 D% I* @
% L& {0 `5 }3 }$ b% ?, nto do-plots. E8 |* s' c1 z" A+ m, @$ y
set-current-plot "Trends-of-Local-reputation"
" r' I& P% e) `8 c4 s' uset-current-plot-pen "Honest service"- H3 X# e, p- ~0 l; q4 d/ V  w$ Y
end
. j3 `: M; B6 D/ r" ~& e$ c0 h" V; g" B7 P7 X3 b9 V) z5 R$ P
[ 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.
. u# ~' Q4 T% I0 a1 c+ R" b  t" v
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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