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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:5 @3 |% H3 u& p# ?
to do-business
1 `' V7 z+ T9 v4 u; W/ u rt random 360. e9 Z$ B0 X; C5 S3 K
fd 11 y3 ?$ p! b* g
ifelse(other turtles-here != nobody)[4 f! t% U, T) ?0 X
   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.
4 u, E8 b2 h2 y) a   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
3 h9 u' D3 p1 F& c$ ^   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer; `' G5 Z/ @# R2 U9 r% [
   set [trade-record-one-len] of self length [trade-record-one] of self
, E& R: }# k9 M" \1 V   set trade-record-current( list (timer) (random money-upper-limit))
3 S' v- z& S1 D) i: D
- z" f8 B' S! V' Z9 j# o% |) C问题的提示如下:
( c' o4 c- a& Y# [
# _2 e: X9 ?- G" Berror while turtle 50 running OF in procedure DO-BUSINESS
# c$ ^( }  r1 u4 t; R  called by procedure GO
/ F1 f2 U: |# P( v; ~OF expected input to be a turtle agentset or turtle but got NOBODY instead.6 o# f7 z' y" u: s( @- p
(halted running of go)0 m! f2 L7 U0 E3 K  s- [

$ y1 N5 P/ e7 S/ X这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~6 S% [2 g0 |! f
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5 _* [' R$ ]: \4 Z- N% _) K
globals[) ]% f  v1 K7 L& U& |( i# @
xmax: c& {5 |; ]8 F2 T2 |9 @" i% c
ymax
# |# U! ]8 d6 `global-reputation-list4 Y8 L# I) X% H
. k9 _: E4 i, U, u; n
;;
每一个turtle的全局声誉都存在此LIST
  T& R2 }$ u* ecredibility-list4 S3 u- R4 I) a4 o0 S5 X
;;
每一个turtle的评价可信度
9 K# e4 w! t& w8 U" V) Bhonest-service
$ M2 v$ N( r6 E9 x/ \unhonest-service) p( n1 O7 F9 N' y- f+ B: a
oscillation7 R! Z/ y; \: a& A2 @: Z
rand-dynamic
% Z# o* P& U% Z- w6 ^* U]$ ^1 b$ a! M: x! m: G4 G
1 O5 Y+ `4 ^' N+ C! u8 [* k
turtles-own[
, ~* h9 m8 G8 f: C2 w3 C: h: dtrade-record-all* h; @  y8 H# I2 S1 p
;;a list of lists,
trade-record-one组成- P; I2 ~5 \: S/ u# A
trade-record-one$ S8 g: B9 C2 N5 d% ]9 c
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
6 t1 `7 G& a: t* E5 e" z0 F1 K9 G  u2 G1 I7 D& @8 r
;;[
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]]
* {2 R0 A$ f5 |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]/ d0 N0 p5 h, 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list
# x' E, ]+ z* c9 z$ ?6 h0 fneighbor-total/ G6 R  |4 X$ l* l- j/ O2 l3 Y& |# w
;;
记录该turtle的邻居节点的数目# J4 Q0 p6 \9 \
trade-time
# h6 }" K9 m9 k. J;;
当前发生交易的turtle的交易时间+ N" z& J1 F# l* t! d/ E6 K( y: R" S
appraise-give
* |0 c- l! j  p/ f4 V8 p+ x' s;;
当前发生交易时给出的评价
  M% A; Z2 |3 K& P) Y6 fappraise-receive: p' E9 i8 t$ w- i2 o/ b& K, G
;;
当前发生交易时收到的评价
' _4 m1 j- w' s6 F3 Nappraise-time+ H( s' N; R5 W* _
;;
当前发生交易时的评价时间3 ~" ^: N. R+ R5 z4 O; t( B& q" a% d8 \
local-reputation-now;;此次交易后相对于对方turtle的局部声誉( `% x- q* ^# V. l1 y) g
trade-times-total
" L0 P% Q& _. W  B$ S;;
与当前turtle的交易总次数7 C8 K0 s* V0 w) P
trade-money-total
% ?7 \' r' \- H- z; u;;
与当前turtle的交易总金额
0 N$ d% [  T; q0 T' o1 Z- N3 ylocal-reputation" x( g, [2 |3 r8 W* F
global-reputation
! J. m) X+ d3 ~, D/ e9 p5 t4 {credibility
) p, H% H- J9 Y- R/ }8 @  k% `9 |3 u;;
评价可信度,每次交易后都需要更新+ S- d# h! [5 v: F0 F- F( w
credibility-all/ s0 i4 l  r/ {% x* n3 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
' @+ x7 `& K, F* S0 K+ C! h- L& Q
% y$ P( J7 i, C# b, 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
, Q& V* _9 O! U' J! u' Ccredibility-one
0 a. \* n$ P, S3 l;;a list [i
j1的评价的质量评价,ij2的评价的质量评价……],其中一共有people
3 L  r$ i6 g- w. m* r/ i8 [) G: f4 Pglobal-proportion
( `/ N- D, [. N5 Ncustomer
& P6 Q+ |  ?& q+ M& p! t; L0 scustomer-no
! R3 Y; f) L7 x7 r# Ftrust-ok- |6 R$ i3 o4 g$ `' q6 X& }
trade-record-one-len;;trade-record-one的长度
+ P. \3 _) w" t. u  L4 P]$ K( J# z2 ^% w: I5 e

2 c  G% _1 @# p* j& r4 s6 a3 O;;setup procedure
, _6 N4 w% ], d, G. ~
2 N- B* ~2 h. K; Ato setup
, E" L6 e! Q# M* Y/ v& `# c
2 R( X) O- t( E* d/ P( v# O0 `" eca
1 ?1 j+ e$ `+ A% D  H0 N
) `( w9 q# [2 Q/ O3 T' s7 s
initialize-settings
3 o! ~$ G+ j( a- S

& u4 t, g3 K+ w( i3 K5 [6 Vcrt people [setup-turtles]

% F# Q- J1 O3 a4 o* N: h
- c; A7 f' ^% ]8 Z4 \reset-timer

& k' G6 {1 ~, w: P
$ A4 c3 [" B0 ]: \2 b2 E/ {poll-class

2 n4 D' w# R, q6 I- D9 p7 ?/ c6 m9 O. T2 s: `
setup-plots

' V4 _( T, |5 `$ }
  T4 y+ w7 c5 v! {. udo-plots
5 V. K! z1 G6 ?) _. \  L' ?
end
& F4 I1 @1 e! q* }  m# J' ?9 ]& O; c  I/ u
to initialize-settings
3 r) t$ _; X1 P* Y6 S5 r: E" \* I1 R5 a, i; L* l  Z
set global-reputation-list []
4 H' P% @. ^' Q  B) W/ p9 N

) @. @! \& R) a* Tset credibility-list n-values people [0.5]

% p, G( O" b* Q2 A/ d# c: T+ O, D, ?' F9 G' U  ]
set honest-service 0
) E  g6 c2 Y& \/ `: n
* D" l4 j5 z# T/ a1 y: R2 X4 s4 g
set unhonest-service 0

* O. N7 R1 Z& E# r2 B+ H5 H, ^: G
set oscillation 0

( _$ R$ c, m3 U9 A
% o* v3 r! z& _. j9 [8 J  u1 Y+ qset rand-dynamic 0
4 |+ j# w( x( w- t* G
end& Z$ A- \5 f- E! s" A

8 E: h9 I! o/ B( N+ ~to setup-turtles
5 P, |! J/ M! [! g% I4 Tset shape "person"
+ N1 i; A+ k7 zsetxy random-xcor random-ycor/ I. d6 [4 u- \( W" L
set trade-record-one []
, [2 V$ A7 @, p9 C# C; V) Q! V) ~
9 r6 ~8 n" W0 n9 [& Z9 T& i
set trade-record-all n-values people [(list (? + 1) 0 0)] : }) z' z# z; F# |: |2 z; h

4 }8 u' g0 f9 S% gset trade-record-current []
% O9 R. y5 M; e7 ^set credibility-receive []6 J' |  @9 f# u5 G4 m+ x
set local-reputation 0.5  T5 M6 ~/ i3 Z- D2 b7 F
set neighbor-total 0! }% V4 Z. B- p8 W
set trade-times-total 0
7 e8 Y3 p# V, iset trade-money-total 0
8 K0 {8 @% }+ Y" U4 h2 }' R2 bset customer nobody
4 T0 X, u. r7 D9 D/ K0 rset credibility-all n-values people [creat-credibility]
2 ]; L, W5 A. X+ G' F. e, dset credibility n-values people [-1]% e  `' U3 `2 i+ g# z
get-color
' z8 q0 `8 n! e" s1 p. R
4 z# J4 h2 f% s  X& M6 U. X; ~
end
& p/ D  b; O8 t0 C9 e: b: }9 I5 y7 ?+ e3 p& ~% m) Z
to-report creat-credibility2 z/ e5 o. w5 ?
report n-values people [0.5]0 e: @4 j+ a1 O
end
! J1 d5 X/ y+ P$ N3 O0 J7 t2 k( i5 u5 L
to setup-plots
1 k# Y- G; L5 J7 X. _, F! Z
- [4 E4 z6 N7 v5 _" R; Lset xmax 30

* p7 {0 f- r+ @4 X" M( g6 y$ ?
  Q, K$ i" g5 S( ?! \# I- i" u2 [. mset ymax 1.0
: t8 B6 k( a* D

' o% d; ^: H, B& D4 V* v% _, u  Bclear-all-plots
4 j- e/ y- ]* {( r5 c2 Z

5 e( x$ O! N4 q: d2 c" Lsetup-plot1
- D! B  k0 }6 V  D  e, m
& A" m/ H7 L( X* j# X, }
setup-plot2

& v$ a9 s& k' T9 z2 r0 l, T% s% {8 S
setup-plot3

+ ^) F( m2 c2 A5 G4 J! L- f( a' Bend
! s4 n' F$ \6 B8 j( m
* c$ F$ G; ^6 ~7 S8 s;;run time procedures& y8 g" X0 y8 J8 |* [
4 V5 J* V1 n3 ?( _) x
to go
4 |' r5 q( l) t+ A
- j6 A, L- \$ p1 yask turtles [do-business]

  Z# G$ o: {1 Gend
: B+ S1 c5 {# b# h
2 }$ c+ p6 z8 w) \" ^" Xto do-business % Z9 d- Z0 o2 g1 o; J+ k' q$ i

% g% F2 C' t5 x1 N
! R% C1 P; y3 W$ C- m$ hrt random 360
% `- z( X  s! z; G, j2 u* G
5 y$ s. \% b9 O! F
fd 1

* r" {. L+ f" I5 r
  ~/ b/ M5 u5 h: pifelse(other turtles-here != nobody)[

: T  ]3 _! O" V/ r$ O. [
/ |) c" w( G: R; U# ?+ Gset customer one-of other turtles-here
" T5 O3 v( w1 l1 S

1 J5 E& N: }" x3 P8 G;; set [customer] of customer myself

2 p$ {$ k, y4 b# B; `* l: Z; V5 ?$ j0 L. w* y- Y
set [trade-record-one] of self item (([who] of customer) - 1)
* G( j- [( ~2 I# w* s- N[trade-record-all]of self$ l2 c6 a5 s* p
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

4 e' {9 S2 a+ k: ?1 n3 }  T; P
# L" l: b$ n$ o6 s. u) s( w* lset [trade-record-one] of customer item (([who] of self) - 1)6 p' v7 ~# t0 Z& F# `4 [
[trade-record-all]of customer
, q& N( E% v' L- |
7 n1 w% T) N# _7 M( ?! D  r3 n+ A
set [trade-record-one-len] of self length [trade-record-one] of self

* [3 @# s% Z: w8 `* I  j. k! S# d; G* A7 e- M
set trade-record-current( list (timer) (random money-upper-limit))

0 \* F; V5 ~  S, H% C4 K7 f% S
  \: r9 f+ B1 _- J( uask self [do-trust]
( z8 e5 v8 R, p: U6 ?;;
先求ij的信任度# p1 b8 M- z; I4 o

0 t3 B& r* Q7 l; t, o  q" i9 Aif ([trust-ok] of self)1 m6 [: a6 L+ W% m, q$ v
;;
根据ij的信任度来决定是否与j进行交易[
* H0 V9 z% c6 C! `: }0 kask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
& u$ ]3 N9 S7 k% g. z$ ^: c6 ~0 \$ Z
[

8 q# H$ ^! w' }  c( e# b& y- ^+ D" K# l0 t" f
do-trade
* j0 t; a& a; |( w
' A# J& ?* W/ r# D8 k
update-credibility-ijl

5 c) }4 n* }6 u( t2 C5 w; B8 L8 ?# {% a" ^; f: l$ q1 s
update-credibility-list
3 a* V. q7 B" q+ z2 |

. A' m' U7 N4 T  [$ x. s2 s3 c
update-global-reputation-list
% o: b5 I8 m# c2 g
! P1 f! N0 b, k- d( i- e! J
poll-class
+ K, M+ i% W/ h# G; _6 C" Q
# z: D) L( R1 x# j. I7 q5 U5 S2 v  C
get-color
( R4 n- a  i  b8 m! @
! c; l& c* S. P4 J$ W. y
]]" o. q0 \- H( j# w6 F3 K

# q/ P! l0 O- w. o3 V4 @$ a;;
如果所得的信任度满足条件,则进行交易) D' M. @. F+ f1 J8 N, h: e* @

4 F9 J, I5 L2 Q* ^. D[

2 @  x5 ?. U2 \4 H) W" L+ }+ Q, g
rt random 360
4 l6 R4 F, g+ t/ ~

6 i$ A. q4 h& dfd 1
! h8 M5 R" R' h+ o9 ^+ a. D

4 i/ M! \4 H$ t# z) U]

5 U' x4 I! i5 j3 e
8 T# G: J+ `! a- t9 @end
; q1 @3 w% b2 _. ^; H" ], F
# ~6 y1 K  k/ d' y, L. |
to do-trust   K6 s" n5 Q& }  D# ?4 g7 F  j
set trust-ok False
9 i' C3 [4 ~& c4 Q! N4 X* [' ~& m: E

# b9 Q2 b0 P6 o$ S" h% Nlet max-trade-times 01 v+ \) S) ]( F% z! a/ I: o, n
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
* R: e% Q& i' F6 Q. w( A) p8 @let max-trade-money 0
* g& I* {( N+ v5 ]% t2 J9 ~0 A0 aforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
0 o. }3 P/ T- b" plet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
+ ~3 r( Q! i) U- O+ ?) u
. r$ Y7 ?  ]* k6 w2 w# ?2 p$ j

' Z0 z# H. V+ j+ ?; |get-global-proportion
- C' d8 \; G, F9 K/ Hlet trust-value
1 q: v# t9 D, D) s4 t: ~, t# W4 ~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)
1 r& X8 n6 ^9 `* Q, w; a
if(trust-value > trade-trust-value)9 @/ @8 \  h& L, F7 c# P1 B% P
[set trust-ok true]: \8 }  \4 D) [4 l
end  X0 [4 w. x) f- d: x7 L
3 ]  Z2 \: Z; i$ A1 W
to get-global-proportion
/ [) D  Z4 R. ^+ ?9 b0 uifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)6 j" h3 W2 L% g6 {4 j" {' ?1 A& Z' T
[set global-proportion 0]
; O4 b- S; l; ?7 f[let i 0+ M" N, Z0 Q- Y  X/ v
let sum-money 0
+ U' {5 {; p. o, l% Iwhile[ i < people]2 p5 _2 z. v/ r- Q% U- q
[4 s1 b5 b/ L5 _6 F, S% y: Y+ W! J, B
if( length (item i
2 U5 x0 l# z! \, w% c0 D. i[trade-record-all] of customer) > 3 )
% |# r% f: B5 T' U, H7 h+ }
[
2 l; P5 g- C1 f) b" N# sset sum-money (sum-money + item 2(item i [trade-record-all] of myself))$ I" g4 u- z" F, \" H! U1 C
]7 s) H* C7 H" w  w% G
]. ^: m1 x- O/ T8 G
let j 03 [3 c' S0 g2 f. Y2 O# h8 i/ K
let note 0% g0 z! l. Q9 R, |. j+ m& e
while[ j < people]
8 o. l7 y% }1 `* u[
, O' ]4 J5 n4 yif( length (item i
' W/ O' U4 |- T! U- q7 G/ C[trade-record-all] of customer) > 3 )

) F2 K; T; @+ X( W! R. ][+ f( L( F6 ~* f
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)% L" v' c6 ]1 n- X/ h, T: y
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
: E& b* |+ l# f' a0 s[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]7 J( p; _: g1 I8 Y' a0 g. [' q
]
5 _7 O' Z* x" i- n2 f; B- f]$ J' G; E: k) G) {. ^
set global-proportion note
! S4 L$ n9 Q3 |% Q9 H' }/ T% ?# n" R( Y]( K1 s/ q/ E5 Y; X" ]: {5 S, J$ T
end4 H, `! Y. t+ s1 D" u% Q4 ~

5 X& k; O& {; E+ oto do-trade, [+ g  }# Q$ e
;;
这个过程实际上是给双方作出评价的过程7 E: _" w4 a1 J" }. t; G, P
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价1 Q& L" v1 M( _5 ?) a7 Z- I' \; A$ n. j+ \
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价/ O8 f7 D" x& o  B+ B/ Y2 q* o. t8 x
set trade-record-current lput(timer) trade-record-current3 \" z9 h( b; f  ^2 c
;;
评价时间
9 @6 V. U. g6 @* b6 oask myself [
, I7 Z6 @4 ^# j8 S+ l8 hupdate-local-reputation' ?$ E0 V- Z# R; {9 w  Q' D0 R; c
set trade-record-current lput([local-reputation] of myself) trade-record-current
8 w- l  g. V- r* B/ O) M0 |]. Z! U& y/ s6 \) g" M/ r8 A
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself& p4 ^/ ^+ d" I
;;
将此次交易的记录加入到trade-record-one6 f) ~  |' R6 N$ ]+ n
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)# ]) b0 v9 ]: J
let note (item 2 trade-record-current )
0 c: u' Y+ B' [; qset trade-record-current, ^: U4 D5 U, R5 m! H& `; u6 t
(replace-item 2 trade-record-current (item 3 trade-record-current))

3 k8 F+ r" C- X: _; E: cset trade-record-current
" B. H& M% J" p4 {, \' e# i. }(replace-item 3 trade-record-current note)! T+ a" |; B" X' M
/ e( A) T, ^, U" r( `5 \

5 I2 W+ R7 m5 Q* y( S0 m, Y: \# {ask customer [
1 k1 o1 _; k' _  `9 Pupdate-local-reputation! g% V2 e9 J" w$ E! @
set trade-record-current
9 W4 j- `6 ]+ I9 m9 y/ b/ P(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

' _8 ^/ y9 A/ \) w5 e  n- G]0 T6 V2 c) X" C% s' O4 H2 v. ]5 m
2 f( [8 @# C9 J( a

) A( A! E1 M, E3 ^: P1 D6 ?, [  Zset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
! }. B1 F- I& K
8 ~$ W7 u) g: t! }$ J* K2 f) A
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))$ _+ v8 [1 j, u- p/ f+ u
;;
将此次交易的记录加入到customertrade-record-all) A, f# ]& v" L0 B: O
end
- T! _0 N0 C% |, Y. M  s
0 ]7 N7 b) _6 a/ |$ sto update-local-reputation
2 r* R) G; L0 o4 [$ Cset [trade-record-one-len] of myself length [trade-record-one] of myself
6 [  V5 f- I, q
/ J5 x7 q. S0 \/ s& G  R: P+ c2 u. L* F- W* h( P  f
;;if [trade-record-one-len] of myself > 3

  Q7 M6 W- E5 iupdate-neighbor-total, @! {6 f3 k# {: ~
;;
更新邻居节点的数目,在此进行
& f0 n, @; P  k( @: F  J" Dlet i 3
( `1 i  l# v0 Slet sum-time 0
' ?4 U  ]: x4 lwhile[i < [trade-record-one-len] of myself]* \4 M7 b* `; c4 E: C
[
  z. N  o# D1 l! C) Hset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
6 u) y2 ]( l7 m; Nset i
7 [# O3 i' ]: u8 K0 |5 t1 I( i + 1)

4 y) t% Z- d; n, ?$ B8 V]
- i' ]" _6 u" q, v" U! h, hlet j 3) T9 l4 N8 l  R3 [  Y) \6 o
let sum-money 0
8 G% }5 o( ]) j& F; E; ~- b& {while[j < [trade-record-one-len] of myself]* ]9 D* C& H) a# [* K) v, }
[
4 o! ~$ Y3 @- G' U" m8 kset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)2 E0 N4 I# ?" g9 w
set j7 W. Q( W+ O1 I! i
( j + 1)

& d4 h# c+ n# J- s]
+ E1 K3 \! c( _4 z2 ulet k 3
( D& @9 a- F% }7 \6 llet power 0
1 C7 Q  }* d+ I' o: o2 Q* S+ |! Llet local 0
' |7 c, f% j' O* T0 }2 bwhile [k <[trade-record-one-len] of myself]+ N( f* ?7 u0 t+ r: m8 n) w
[( E" _( p, m1 ^& e9 {; T
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) # b# N- C7 f$ H; K) J
set k (k + 1)
+ D, V3 H3 k+ ~3 V4 u5 a]
2 C4 M+ i% F; y1 S/ e  Nset [local-reputation] of myself (local)' X" `9 z- g) {2 O
end) B1 m( Q! T: `* I3 b# D

' L/ v) j5 V2 O. qto update-neighbor-total
& d; h9 R% e8 m$ W% M& a+ f& `  m# T8 E2 h! j
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
  t" C" J4 Q9 ]
& ~' }8 Q6 y! O, J2 [" ^$ R0 W

+ T0 ~2 K. J" t+ `, nend
) E' L( t9 u0 f! r8 r7 Z6 ~3 R+ O) c( ]8 o4 n
to update-credibility-ijl $ r( _( E/ h7 H( `" J& y; N2 F* O
4 P1 m" Z# a& r
;;
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。9 p5 K0 m' b" W: ]$ i! o6 v. A
let l 01 C* I  X' ]  b' c/ I  ~
while[ l < people ]
7 V& s0 W, y' q* `;;
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 r: c1 z1 L+ s# H: z[
% W, u! ?2 ^2 w% l5 T# rlet trade-record-one-j-l-len length item l ([trade-record-all] of customer): g) p% x, Q, z* Q7 b5 B' A
if (trade-record-one-j-l-len > 3)
1 y' g# G* j8 ^. z2 |[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  W! [) _) V$ n) z7 G9 h
let i 3
; v2 P. u0 `5 J+ Y, Elet sum-time 0  q& K: q8 i1 ]$ _' X! K" h' P# c+ Y
while[i < trade-record-one-len]
. W7 }2 w: T/ |8 [[2 S8 h5 P  n$ G3 n
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
& Y- w; o: P2 l. wset i8 B1 E. a' n4 w! h: [
( i + 1)
: [. _( w0 s( k+ Y4 K
]8 E" t" r/ G! U4 u! E" Z
let credibility-i-j-l 0. g5 M) R0 k0 w2 w# l4 f
;;i
评价(jjl的评价)
  W$ O# M+ W( s, E" @let j 3
) M* v5 j7 k- b+ d% p6 jlet k 4
: b$ |/ c; M, l/ ewhile[j < trade-record-one-len]
0 j8 ]! q) g5 b1 o7 D[
! |# P9 B  a5 m$ ~# d! k; bwhile [((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; o0 k3 A% M+ E) X; x
set credibility-i-j-l ( credibility-i-j-l + (item 4(item j [trade-record-one] of myself)) * (1 - abs ((item 3(item j [trade-record-one] of myself)) - item 5 (item k trade-record-one-j-l) ) )/ sum-time)% f" j9 L! H/ c$ s& R; y# R
set j5 m7 h( a0 \% F
( j + 1)

( e6 Q% n8 u7 C3 w]& x  ^4 U: W! i+ Q- K' K
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 ))
. \; \0 X1 w' B3 _% d# x7 i
9 s  |0 J1 S) i, W
+ d8 y& z* }8 D  A& l
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))3 S9 B# h- N7 }8 k( h, R6 k- g
;;
及时更新il的评价质量的评价
; }* V5 J% I- ?7 ^, D) \set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
4 x2 Q' a6 A7 ^5 p) R2 Bset l (l + 1)
; m. `) [! D: l3 E) _: W]
+ [3 }- c8 M  |5 b0 \6 yend  ]1 s: a. @! I1 [  \3 g
# P* ^, \4 S0 i* W
to update-credibility-list
$ _8 U) z% w3 a8 O. m6 vlet i 0* ]6 z" g8 Y; k7 I9 [3 n
while[i < people]
! z& C( H& u3 w3 v[8 i) q1 X& F2 m+ H5 M- L
let j 0
9 D. v" \) e: C6 I; klet note 0
' K5 Q2 m) V% r' r8 a$ f9 r8 alet k 0
5 c/ ?+ D6 X1 Y8 t) g' f4 O;;
计作出过评价的邻居节点的数目
# L7 w3 z& D" O+ n) C1 fwhile[j < people]
) y* K! E5 q! i1 r[
% K3 [, G6 B* h. L: f, ~7 Bif (item j( [credibility] of turtle (i + 1)) != -1)/ G% N  x  I+ C* M
;;
判断是否给本turtle的评价质量做出过评价的节点' w! D) s: W" }. A) R
[set note (note + item j ([credibility]of turtle (i + 1)))* l& ?0 G, C* p
;;*(exp (-(people - 2)))/(people - 2))]

! M; P  L6 n1 d5 U1 w: S. w. I+ }set k (k + 1)+ Z* K  k' N4 T7 v
]
& M6 E4 r5 ~6 t3 Eset j (j + 1)6 v! \8 J& L) W8 q
]6 |! }% K+ d+ Q  @; }( `/ P; g
set note (note *(exp (- (1 / k)))/ k)
0 u. q# u, E  h% Aset credibility-list (replace-item i credibility-list note)9 t: R, S0 ^3 @' y4 n1 w0 k7 k& c
set i (i + 1)
7 E- X6 L  w4 I* J# W]
5 R8 O* }" g# z3 pend
* T  K7 r/ G! V) R% {0 S% u) \- w) D' r: O
to update-global-reputation-list! e( Z  w5 R' `6 C! s$ `/ a
let j 07 u& c  d+ i6 G* l1 [
while[j < people]; q  s" v: Z0 l
[
  K- R" B& C1 s2 ilet new 0
+ b3 R& f- F' }  s* s5 R1 w( ]: @6 };;
暂存新的一个全局声誉
( ^9 R5 T9 C( {; a+ E# s8 e/ ~. Flet i 0# E# {' m* k* ~) B' E
let sum-money 0
7 w1 _' q8 U7 s% t8 q9 z, Xlet credibility-money 0
/ o2 P' t2 n1 l) J* M/ v5 z* bwhile [i < people]/ s( [! z1 a# Y; D" j0 c& R
[
) k# \  C" q9 y6 I& j$ sset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))5 j5 K! \' D3 L: N- ?9 \/ a# |
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))8 V7 u2 h) e. T0 f
set i (i + 1)
% M/ r" P7 A6 E& x3 W]
, f& q9 `3 B+ A2 f& M4 Hlet k 0+ Q: W' e5 G- i
let new1 0
. m$ j# k9 {& w: r# G1 pwhile [k < people]
: E! M5 }- {' h[
8 P, l+ B6 ], ~* k# Dset 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)  a1 e$ H! t/ `) J* ^, |
set k (k + 1)
9 x8 U  ]/ ]: }0 X]5 n2 M, t' m9 D: A4 z! M7 `
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
* Z" S4 p, R* X+ B0 Fset global-reputation-list (replace-item j global-reputation-list new)- j" R3 k. ?2 [
set j (j + 1)
2 x0 H4 w9 C- k9 c* y0 b( h]
+ X2 z4 \) N6 y6 \, s( Yend2 B8 e( u& ^5 \; T2 S* N
3 j% R2 L7 j3 n- [1 r" [, ]
& A' \1 m) X5 }0 O/ t% _
1 X3 Q2 b3 Z! H2 V  [6 o
to get-color
: ?# W3 q$ M0 f. I& w; B, d! g4 [, e5 f: @, Q" S
set color blue

3 B  z( w' n6 X; z, e+ m0 b- mend
1 m, ^5 [/ k+ S" A+ P2 R2 q: e- T- z7 J: y) G. I' B, q
to poll-class
3 e& n9 e: n  G! s$ G# oend8 O/ O7 C4 c) }3 w
0 h5 S8 y  Q  r/ y% h& M
to setup-plot1; _3 t8 E, t. O5 h! p! R7 @

0 O; [2 n# h9 {1 p) fset-current-plot "Trends-of-Local-reputation"
) X9 {. L: s4 [0 A% X
1 V6 ~% O8 p' |- Z$ A4 _& T( t& K
set-plot-x-range 0 xmax
9 H/ l' U, ?( [/ h5 x% L' i

/ k2 ^/ i- u! gset-plot-y-range 0.0 ymax
$ d$ X6 c& t0 S
end3 }! w' _2 F3 H3 |% t
0 c# V/ [( R- Z" ~% K
to setup-plot2
7 p# D( c; }5 k2 G( z  w$ L
$ O" f# d0 {( a# R8 A1 V! C' s* Hset-current-plot "Trends-of-global-reputation"
6 J1 C8 o* |+ F2 J; I8 t

* C: ^: t% O) _  T8 X! ~set-plot-x-range 0 xmax

* ~* }# I3 z$ b7 _7 Q- q5 s2 V2 t! z0 p% U5 i' F
set-plot-y-range 0.0 ymax

0 F  H* d  ?3 s) S/ f1 wend
! @$ u4 N1 v& i/ A/ L
" N6 Q1 B8 B* ~% `. bto setup-plot3* U3 ?$ a5 `8 B5 p. Z* f+ o
2 {. V2 b2 ]& Z( d" n( K0 g% y1 M8 r
set-current-plot "Trends-of-credibility"

3 l) u8 G2 a' Q! P+ @$ S; _: W7 A( j
set-plot-x-range 0 xmax
0 w( k: Q7 k6 Q; e- M
( v8 Q6 n" X1 w/ e/ o3 c0 l
set-plot-y-range 0.0 ymax
  \3 W% B: Q& |; M4 H" u# H* u
end( F5 E( Y+ b  Q, n9 O$ P9 {6 Z

% J; x& R1 N8 ?8 X% G) i1 }to do-plots
* D/ \8 L  C+ u/ ^% L! Lset-current-plot "Trends-of-Local-reputation"
5 n. ]) n4 }, `" l. S; e  [set-current-plot-pen "Honest service"9 s& r8 j( \8 g: ]6 }
end
9 |6 l4 }* p  L& l& S1 a
8 I/ K5 O+ g! i- p  B[ 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.
1 I' l# |5 F4 R- v: r3 l2 c  ~4 I- _% D; M
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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