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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:) F& Q! W9 ^9 R7 X& I4 A
to do-business ' {, u4 F; z5 g  [' U# ~
rt random 360. E1 O- e5 w; h, i" b! }  b3 T" i
fd 10 v& k7 m$ ~* E; N/ b" [. [, Y
ifelse(other turtles-here != nobody)[6 B) F# `  t$ o/ d$ U/ [  o0 E
   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.
" ~( G5 z- f4 r. R4 ?& d: [6 x   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
4 [) z8 r: ~; M' X5 F   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer, G' C; T! M9 C0 ]- e
   set [trade-record-one-len] of self length [trade-record-one] of self4 y( f8 T5 D7 Z  U
   set trade-record-current( list (timer) (random money-upper-limit))2 ]( a; k; |' \) _' m' ^: b$ u

3 U6 M+ @& L; E1 ~, u6 g问题的提示如下:
7 x- A% Y9 B& _4 f8 X3 X0 v8 e( g. n1 e- X" T3 g
error while turtle 50 running OF in procedure DO-BUSINESS) v' e" ^7 V( |9 M
  called by procedure GO
- o0 Z+ E  _+ x* G& u$ IOF expected input to be a turtle agentset or turtle but got NOBODY instead.* o6 U! `1 b+ \
(halted running of go)
8 B6 b9 v3 d8 P; j+ E5 |, z- n+ d3 t& [- v2 r4 k
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~~' z; o& [+ O3 k5 r# T
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, T9 k  {* d3 _0 ?
globals[4 D+ ~' j+ S" U) S/ ^/ q, V5 {
xmax
$ L! e- V: t6 M7 ?ymax
7 v! e2 k" Z- gglobal-reputation-list) C- I0 z7 b+ C2 h, [+ Q0 r
& x! A1 ], k1 g8 l0 `5 K
;;
每一个turtle的全局声誉都存在此LIST5 h4 R4 J6 n! V8 z
credibility-list& _5 F% ^: }% i6 y9 @" h# R
;;
每一个turtle的评价可信度- x. I' Q: T+ t0 X1 I* Q8 G
honest-service
- ^6 E+ K# A- b9 O  s. G9 A& a; G$ Sunhonest-service2 x8 p* X- W1 a" t# E3 P4 r
oscillation4 {4 O: D1 A9 \2 ~+ p- C) N7 m3 `
rand-dynamic' H4 Z1 s" r' }, D7 P) Q0 _* J) P
]! v" a$ L+ T; c4 A
* A: k( Y% Y4 T% W0 j+ y
turtles-own[  u1 d- ^5 S. H% p0 z* B3 w
trade-record-all1 |+ y! l! Y3 R& a: _7 k, q. y
;;a list of lists,
trade-record-one组成- I. O7 k  I! z
trade-record-one3 T( d7 `; s, z  Y- s# T
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
+ y0 W! ]3 l: L9 M9 `( u/ }# l! U7 X4 a# E# 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]]
9 v( z: \1 j/ u  ~) J1 T7 Strade-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]
- v- a" e: [# a/ ~5 v% jcredibility-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+ N4 |: y# _) B3 M$ ~neighbor-total
) l% n# C% B: }3 Q: X+ I; A;;
记录该turtle的邻居节点的数目
( e% O& c: }( B6 D% Htrade-time& O. F0 h1 D; Y& y- ]5 m
;;
当前发生交易的turtle的交易时间/ R" i% Q0 X; R6 M1 I
appraise-give
. Y3 T) k6 k/ }: P;;
当前发生交易时给出的评价+ y* x9 P. b0 \! D( o; L3 A8 k
appraise-receive
" y6 F4 n. Y% t- m" {;;
当前发生交易时收到的评价
7 `- R4 t1 `* J: e7 e7 t5 nappraise-time
1 l! J( U% t" ^( ]/ `6 B5 w;;
当前发生交易时的评价时间
& a% {. [# Q1 c8 W* p6 ylocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
  H& J& r/ E) r: Q$ g" ttrade-times-total
& d. n1 f. p) H& c0 g4 h: H;;
与当前turtle的交易总次数
7 a5 A6 o$ j4 n  }trade-money-total
3 @, X. ?7 \7 Z+ O+ L0 m;;
与当前turtle的交易总金额
! c9 z& o0 o( m, R$ \local-reputation4 h/ ?: T6 S3 b6 W/ A4 f$ f% ?
global-reputation
7 P- Z, v) e4 G, V2 T- |% Qcredibility
6 j/ \; t( e5 M: z2 U! T. T7 N% a1 c6 J& [;;
评价可信度,每次交易后都需要更新* F! k. m: t  @  F6 S' Z2 Q' t
credibility-all/ ~2 J1 k: d. `+ u  C. ?, }9 R& E
;;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 k- E5 }( q* w0 P+ c
* O: Z3 E4 P- h;;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
, ~# l0 p% ]: Gcredibility-one
4 B' R5 H' c' {, w6 [  c' G;;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people9 K/ J5 L# ]& u
global-proportion
. v) N' m3 t% e$ v1 ]customer8 W( I5 q, K0 I( f
customer-no: W: t) l0 P7 T) Q! ^9 m- w0 N8 q- d
trust-ok: |5 ?& q* c' t. p
trade-record-one-len;;trade-record-one的长度
, F& f4 G0 C# z, s$ q3 t) R! V" H]
5 G( Y- o3 R4 a' W: z0 q/ f5 [; \7 O9 M2 U1 [! H
;;setup procedure1 N2 I/ q$ g4 W& K, l
& c: S! u( B3 r
to setup; q( F$ a! m  ~

3 I( Q0 g: r# z! H6 |ca

  Z& P2 x1 R9 h2 \+ T- U6 k
. E# Y9 D, P) U1 `initialize-settings

; F* P( @1 U9 Q" B* B/ r! ?) d6 d+ ^
crt people [setup-turtles]

$ [8 L, R8 K; B" @, r$ `! B0 O% ^! o* K( n
reset-timer
3 s" t* x: n% t  \

3 H! ^) [. U; m2 X! Opoll-class

5 V. @; u6 P& a+ D$ Y$ d: h# t& z2 M
* q! A, K7 h* ksetup-plots

: u! {4 }; F) N# X) m, r9 E
* ~$ T  X7 Y" m7 y4 i  Cdo-plots

* R: h# q7 m# p+ _! f) h; @end
7 r3 o0 k# u# [! R: b+ u' l; Q2 r/ ]' l0 h" Y$ f( S
to initialize-settings
7 U! L: u$ U4 q; m" N
9 g! f& I1 T/ z0 |6 cset global-reputation-list []
: a2 A& C/ b- [% s, x2 ~

  k% [- ^3 a7 s7 }! T/ h& [set credibility-list n-values people [0.5]

5 {% B' M4 |1 }9 T5 a% y# o9 `" P6 D% H! i) Z9 Y
set honest-service 0

% ]8 N1 f& W  ~! C
' q+ r+ ?& M( M9 L; W3 r* hset unhonest-service 0
( L- ?+ Q! }" i4 }

7 h& i9 ^, F* C6 B3 y/ f8 b; tset oscillation 0

- _! v6 [% J3 _/ G; A. g3 n
% ?- ~9 `9 l; \! V+ B. r8 Jset rand-dynamic 0
: ^  \/ V$ m. B' w& L" ^
end2 c' H, k0 I  }+ ]- ?3 o
2 o8 S+ p* G( Q6 N  f
to setup-turtles
; j* |4 h0 p! }( [set shape "person"  z# l% q! Q8 [+ G; }
setxy random-xcor random-ycor. D. R6 q( O( }  ]! J: |
set trade-record-one []
1 u# h" a( c' |2 |2 ?
* g5 u8 [( z4 I8 N. B2 v# G1 n
set trade-record-all n-values people [(list (? + 1) 0 0)] ' S# J( A+ K9 ^: r3 R0 z
6 W% N  n' Q: U' F( ?
set trade-record-current []
* S3 O# `9 {( p+ p7 |' C0 }; Zset credibility-receive []1 S5 d( t% C3 m& @  L, S4 o
set local-reputation 0.5
/ H/ i2 S: |& a* kset neighbor-total 0
7 p+ _1 O# D# ~" z( l) iset trade-times-total 04 \% P# x0 C- S4 i, b( G% N; O+ j
set trade-money-total 0
9 s$ h! r. _2 o4 {0 [8 S! U) L+ fset customer nobody
8 Z* M. L8 [2 a8 ?3 c# M$ Dset credibility-all n-values people [creat-credibility]
$ [3 O6 l# L2 v/ A8 ^set credibility n-values people [-1]
7 @" C, p: v9 h8 X! G+ u; s' qget-color7 N) }7 s- R4 s9 s( @7 ~
! K# t; X  s; l2 J# f: u6 {, f
end7 [7 r% t; F/ E# H# Z
2 y: e; A+ _: w* d
to-report creat-credibility
. s3 y+ Z# ?" x  A4 freport n-values people [0.5]
( i2 E1 ~& b- tend
- ^( D6 }- W* k% U3 L0 i  g8 A) F
. w  ^7 c3 l7 Dto setup-plots! K; ~& V, g' P0 b5 `

0 o) F2 u; w' Z# P$ ~set xmax 30

6 u" T6 B; ^  j& L- W/ I2 C& D2 O7 V; N' A6 [& l. j
set ymax 1.0
& x7 t# Z5 O1 _

* b9 w. d* q- Kclear-all-plots
* a8 i5 [' I1 d* }

4 E4 }7 _0 r/ Y" K6 }8 Ysetup-plot1

& {0 x4 v$ _, j& \2 ?9 a- s, m9 w
. w6 h" C' H- w/ Xsetup-plot2
! i! d+ S% g9 \9 E; Z
. H/ q1 o( G: L, ~# u- {6 w
setup-plot3

3 O% j& g3 d* J  D  Z+ f" fend
2 D* c* P5 Z( G( \) l1 J/ w7 C: [- v! s) [, n" y7 C& t! K
;;run time procedures1 d) `) c6 L, X/ W, v) X' @
. o* I! d  A- K: r2 ]: G/ N
to go
0 [/ E" \% K" V. {$ a6 K8 h# u8 W' g& ^* P
ask turtles [do-business]

) _$ O" M# k3 C1 g! i/ Yend1 s9 O- ~2 q% J! Y6 ]
: P$ a% e- X0 S  W- G8 U$ B
to do-business 9 K+ ]! P0 A' n; K7 C! y  x% q' f

9 e. f# b. E  @! Q/ m' Y
& N" p- K6 d, i, N6 {rt random 360
# e! H5 a: B4 M

, H) J7 b1 }: m1 D  h* J8 y4 ]fd 1
( _+ _3 ?1 E! x; L

. x* w4 u5 w( }; e8 O6 zifelse(other turtles-here != nobody)[
  v, r4 P7 r1 l7 W

# l/ ~; v6 A- ?1 ^4 E  ?! A5 o8 v- fset customer one-of other turtles-here
1 @0 R. x; H& e# a3 Z
3 m  t7 T) [# D- R- G2 l+ A
;; set [customer] of customer myself
+ a  t7 q' `& F( {5 f+ c2 `
* i: V+ t5 A3 s5 A) \0 f
set [trade-record-one] of self item (([who] of customer) - 1)
# ?  u4 K$ ^& P$ u[trade-record-all]of self% a5 e0 @# i: ?
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

7 J* t" ~, \: K4 j0 e' v, B
2 w& A0 {! t/ pset [trade-record-one] of customer item (([who] of self) - 1): G: D/ C& s& u; L( k
[trade-record-all]of customer
) t% k, ]/ p  f6 f; {0 h
& G( g# J& T/ p# P
set [trade-record-one-len] of self length [trade-record-one] of self

0 j+ Y2 U6 Z  D! J% K7 Q% |7 l+ X! o5 ^& H! Z. N! Z* l" ?/ }
set trade-record-current( list (timer) (random money-upper-limit))
# K- K3 m- O1 X- c7 j8 u

' e2 Q: n' [" mask self [do-trust]! m6 }" A0 F0 p+ }; [4 X! I, k, E1 n
;;
先求ij的信任度# h5 F3 S. R. W1 R9 w4 L
* d; f7 N' U9 ]$ w: h4 N( R
if ([trust-ok] of self)
  r3 v- t( J7 X4 Y;;
根据ij的信任度来决定是否与j进行交易[/ u7 T0 |7 ]. X# w# z4 `
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
# |1 x/ S3 h* t- ]" [# P, u; q3 F0 A
5 f+ w' w, M5 n- s& z[
2 A+ Y, ~2 @- d2 N! E

# H( h9 Q. `# L% c2 Odo-trade

2 \9 w" u: Y& o
4 t- Y+ d- {  J6 c  a' cupdate-credibility-ijl

" m/ V/ B! t' P4 l& W+ h& R* H( k( B, P
update-credibility-list
" l0 h1 Z: Y1 B
7 D& O0 ^  c) X: b) G, I
+ S- {( S# W/ Y4 R8 x! E+ W- A
update-global-reputation-list

+ a1 o3 S8 u% S6 V0 ~- W7 P/ N  Q* \# ^: h( B( o
poll-class

1 v8 g  X+ P, S9 ~/ [$ _- ~4 U) m1 L( b
get-color
$ D8 ^& Y% L8 j2 Q
  @# [! g+ H1 Z0 i% @4 A3 n+ _
]], y8 T. ]0 Q# B
4 |" {3 \+ ^; D
;;
如果所得的信任度满足条件,则进行交易
# B2 P; `$ h* U- u4 i4 [
0 d3 e, W' H" \  e2 r[

6 i1 [% I! ?2 I' s" s( z
9 a7 v0 n$ Z* @& Z% A% v0 s4 ~rt random 360
7 z" p1 h5 Y4 Z9 i! N

) m9 X! w; k3 t$ {0 ?. Rfd 1

- O9 G* N) E- }1 A8 o2 d5 H2 g+ j7 r3 v$ X7 S
]

, f6 o1 V* N. j. _$ F
& o8 [+ {/ s( t; k; K+ `end

" Z+ i' w4 U1 m  A4 S; r% N: z3 T5 i( x
to do-trust 4 G. m5 x2 e* j- K+ W# M
set trust-ok False
/ c% M5 A( k% j0 e) [
. ?. Y  y/ P9 G. m" O- K

* `& ]1 p# o, e# S- C$ clet max-trade-times 0- M+ H; N( R* ^5 d0 [- b
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
) l' U5 S* I4 Z9 e2 glet max-trade-money 0! c- F/ W% r3 {& s6 }
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]3 ]" K2 B# T. I8 M0 }& ]& ~4 i' [, q
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 Q5 W! u! `3 Y1 `5 C" N  M) g, J' D4 j
0 v* c$ v* E/ y6 }
get-global-proportion6 C& @$ E* g8 b" a; _
let trust-value. o* y3 [6 ]/ G: O# V0 p1 U. X* O
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)

: N5 ?2 O( _( V4 ]/ s: @if(trust-value > trade-trust-value)  D- X  J8 q! m8 m/ {
[set trust-ok true]  P3 u/ j: V; c; A& {. J
end0 l0 k) D: Z0 U+ m7 m. O
3 p0 E$ L) g) p% d$ `! E: h5 X
to get-global-proportion) U: L1 i7 W0 G$ d2 Y9 M4 b" z
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)/ t3 b8 `! T4 Z* b, G
[set global-proportion 0]
% ]  d. D: V" \[let i 0  `! m; u( |/ \, B" B) s. X
let sum-money 0
8 f; h9 Q0 d9 ~5 R$ Mwhile[ i < people]$ P  d  X# Z; f& X
[  ?4 J3 u8 n+ I3 T. J
if( length (item i
# @5 i& [3 L1 i! M5 R[trade-record-all] of customer) > 3 )

2 m) G, e3 s0 D  b/ ?: [: m[
, ~% Z1 s8 b. B' lset sum-money (sum-money + item 2(item i [trade-record-all] of myself))% H4 d' i- ^9 T% D
]0 x0 N5 x6 X5 y" ^9 _9 B1 p, P" E
]  y* ~. c3 a6 Q; r  U
let j 0
8 N  t0 q2 h) |0 w  llet note 0
. Q5 b3 H4 ^9 k5 c% H% xwhile[ j < people]; Y6 T, |# a- ^- y7 j' v
[
0 L- C+ g% x/ T0 s) z: aif( length (item i! G4 o( w! l1 u) p$ c
[trade-record-all] of customer) > 3 )
3 G! y7 d; P2 h8 z# P
[
% [$ ^: ]% e' M% @/ ?& pifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)* k) r* [8 v  x) Z' L9 f* h
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]8 A5 p/ r' }2 g2 B# |7 r, Z/ I
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]; N* j# S8 T6 z
]" o# s8 s; o0 y- f! k
]
1 R$ r" ^4 s" x+ Wset global-proportion note
2 \+ e4 J" c- j]8 R+ w3 O" y- A& F/ I
end
5 s/ ?' ]3 T: y9 a% g3 j
$ i6 d5 Y: s1 |- W8 _1 z% rto do-trade
! X, q5 J$ _& `$ z' {;;
这个过程实际上是给双方作出评价的过程! f, F$ ^8 ^5 }8 A0 U
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
8 ^2 }/ N# h9 Nset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
" C% D( g8 |+ b# d7 Gset trade-record-current lput(timer) trade-record-current
) b& E3 q2 T' K1 f;;
评价时间5 w# `+ Y" P% g. z9 N$ s+ g4 i& \
ask myself [
" y2 P; J7 ?' r% ~. b! M: Aupdate-local-reputation7 }- w1 S2 d. i( P
set trade-record-current lput([local-reputation] of myself) trade-record-current
* _3 G4 x  \4 O- N* E]8 V8 u6 z( A: }" |- I( y8 B- m
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
( i* W% [) y8 x7 i6 l;;
将此次交易的记录加入到trade-record-one) _/ k# l7 f, J: ]+ Y' x' C9 ]% h
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
3 M0 B2 s$ k9 `# t( u) |let note (item 2 trade-record-current )
3 C! {7 s+ [9 ]set trade-record-current
% r# T& J: |2 H8 m: y# K3 u3 h) C(replace-item 2 trade-record-current (item 3 trade-record-current))
9 c5 k& d9 Q1 _8 b. b
set trade-record-current! Z* a2 y8 D7 }, a
(replace-item 3 trade-record-current note)
: V& U1 P5 f5 }( I
/ s# B( _7 x' h
# w, Z  ^6 Z2 p/ I4 u
ask customer [
* L6 x* b. }- b) m: K* V  x, U. vupdate-local-reputation& o2 z; g5 X  a$ B. x
set trade-record-current
4 l$ p9 ^$ p' E" g+ d(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

. i3 x, }9 x# J4 Y8 i# q7 k]
% ]. w/ f% A' s% \
! ]9 f2 @( E9 ?9 X8 H- D

# }$ ?5 b* f! s9 @1 m1 f& W$ }set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer: f- ~$ y1 `7 R! V" [" j
( t4 v8 I( R* t; `
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
+ c0 Q$ @( |* Q;;
将此次交易的记录加入到customertrade-record-all/ t5 Z5 F% ^  q
end& s  Q6 H( a- ?8 `" _& O. t* Y0 G

8 a6 r0 A8 ?/ E( c; }& Hto update-local-reputation
9 ?+ ?: f6 b- \& Tset [trade-record-one-len] of myself length [trade-record-one] of myself. E- y. w0 E1 w

, Z! {& u; {, o7 G' Z+ r" b! }: @. h3 n9 z) w" ]
;;if [trade-record-one-len] of myself > 3
0 C4 B9 @$ _# w, G8 t
update-neighbor-total$ h1 E9 ^2 {' X7 k* W
;;
更新邻居节点的数目,在此进行1 a4 D1 @3 ~; n, {( ]& O/ f
let i 3
% a- E5 n1 {: W  y! jlet sum-time 0
  @2 Y1 Y9 {6 j7 m& J* {" Hwhile[i < [trade-record-one-len] of myself]) k' O3 x$ y5 L0 |
[7 Z" g, G6 y; G5 i8 {5 _
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
7 I) W2 e& G; V) tset i, L7 k  n. s3 N
( i + 1)

+ s$ U4 u* m3 f5 O0 f9 h]
* I+ ^! s' j2 s& r# o) G1 v0 \let j 39 K+ r5 w/ ]9 e+ q
let sum-money 0
5 X" n5 q  l6 y, T" S0 W6 Iwhile[j < [trade-record-one-len] of myself]
, Y( S4 ]% O  g: H* _4 ?7 _[1 _7 D$ r# m/ \/ e* M
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)
3 k7 U9 Z1 F  @/ Z8 K6 `set j
. k, {' h* ]. h( {6 k' E3 E( j + 1)

" t' i  c& d+ Q% P$ I]5 T* y  M# c% h. e' r6 f* Z: Y
let k 39 P2 D: E- X3 ?2 T4 @
let power 0+ M) B1 H7 c2 `' K: O  Y" J
let local 0- b+ R+ f" `6 Q) ^* L
while [k <[trade-record-one-len] of myself]& J/ s9 C, M- B/ e2 F
[
- Q( G# R6 W0 U1 J0 nset 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)
# c% o2 Y. p: O2 a6 }set k (k + 1)$ |8 U% b$ x0 t, B/ o( a+ ]/ g
]" c1 L+ R* b2 S3 a/ h6 R$ Y
set [local-reputation] of myself (local)$ ]% i7 i6 C7 t+ F9 f+ ~$ Y
end3 v8 y+ P4 ~, h

8 D4 U. d0 q6 B2 m2 ~to update-neighbor-total
' T% _& ^, t+ N( a: l) s+ r0 B$ \* o. L
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
) i. L! {- U) G3 V; c6 s  h; b) q4 f6 ?8 `% r& |/ T/ ~2 ^, \

1 C5 K/ u) Z+ x; |$ ^end
$ m" A0 _. o( E& B5 V1 V3 k% @/ F% o0 M  j% d6 M" u7 k6 q7 v
to update-credibility-ijl
+ Z6 i0 v6 W, j* ^3 |- s- k
. u- ]5 m( z. O- M5 `;;
思路:每一次,当一个turtle发和另一个turtle成功发生交易作出了评价之后,就去搜索本次交易对象的邻居节点,对这些邻居节点的评价质量作出评价。
0 c7 x8 ?6 N6 Q  Q& @$ k$ Hlet l 0! ?9 M  E- M( x' _9 J- Q- f
while[ l < people ]/ c9 E2 s+ C; Z+ [# D+ _
;;
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/ \$ G: I" u( C4 k  [( _
[
; m$ B/ r5 c3 y8 klet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
  T8 q+ O3 z3 M# @- R# s! x+ }* sif (trade-record-one-j-l-len > 3)' Q0 F8 f2 m8 K% ]. H
[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: S; {+ z( ]- s  g) J  {8 \( z
let i 3+ L9 P0 Y, p! \# u$ S7 V
let sum-time 0
$ n& ~, @- G# I$ U" U( wwhile[i < trade-record-one-len]; |( W5 U! J: ^
[. e' ^2 `% Q' b6 w. ^; t* o
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )- Q5 o# E4 I* n, G! e
set i
, z( x" |( N, s6 A3 x' M) a" B( i + 1)
, L! T8 b2 c9 j; }: o
]
: R! W) ?0 ]) g( p6 R* ]let credibility-i-j-l 0
0 b. f. B# s6 A% d; e1 L;;i
评价(jjl的评价); p" r, z1 Y* ~9 w# }
let j 35 ]  h; v6 H& ^
let k 4
0 @9 V! [' }4 ~5 D- W9 gwhile[j < trade-record-one-len]
5 {9 }5 j8 ]3 v+ J9 V6 o[6 k% ~/ x* t: m% h0 q1 a! m8 F
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
' B+ @7 N2 m0 |% ~0 X2 mset credibility-i-j-l ( credibility-i-j-l + (item 4(item j [trade-record-one] of myself)) * (1 - abs ((item 3(item j [trade-record-one] of myself)) - item 5 (item k trade-record-one-j-l) ) )/ sum-time)
/ H; ?6 r3 c7 {4 @. X. d$ Bset j) M! f& k0 m2 y4 s
( j + 1)
/ U" P$ V, n1 L& ^
]
$ L' m' @, p  x( {% ^- J( b, Bset [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 {. j( b7 W' U8 {7 \
- v4 L6 L, `3 d1 Q! J, a7 ~# n
6 w5 o: A' Q2 P8 H( D
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
- r: K* x5 b6 O+ X;;
及时更新il的评价质量的评价
/ x2 N6 A9 O) ~% J+ Fset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
% S' t* X  b6 [2 \6 d% v; d" ?set l (l + 1)( k2 U' f$ z) q& L  I, P+ d9 X
]8 h/ `' G7 F- J5 [! h& f" g
end
$ p5 k2 y0 {" Y* F, T! L
- I# D% `6 Y* i! xto update-credibility-list
# s4 b8 X* R& W1 j5 f% L. d; Slet i 01 U, Z  S6 F3 M% f$ x# c( Q$ |
while[i < people]
- Q8 F, d6 H- p& p/ I$ O[
* i% e8 d. x' E; Tlet j 0: U& S- h( i+ W% Q) O' a( ~
let note 0, Y" {$ M4 @: b+ D; U
let k 0
; {) R- v' ]' t, v' }& r- |1 F; z;;
计作出过评价的邻居节点的数目
& ?, W) f- ]+ N3 I. }; E% ?2 }while[j < people]2 e. }, B8 ]% v, J. p
[
* U' l1 v  T+ T' B- Y8 B. Tif (item j( [credibility] of turtle (i + 1)) != -1)
( E+ n+ b( w* N;;
判断是否给本turtle的评价质量做出过评价的节点
6 c: e# G2 }. Q. J6 P4 z[set note (note + item j ([credibility]of turtle (i + 1)))
' N$ _) B3 P1 S;;*(exp (-(people - 2)))/(people - 2))]
& X6 V% `. n1 o5 e6 I) `8 p) D
set k (k + 1)
" x( K( O- J% P]
, E6 [$ w+ c* `0 A$ v& sset j (j + 1)/ i6 J+ r  y* t0 b7 n1 g
]
# v; v3 `; I- h* z2 U6 V7 ^set note (note *(exp (- (1 / k)))/ k)
' m1 }# ?/ x1 `6 Gset credibility-list (replace-item i credibility-list note)
/ h* S2 Z+ _6 K/ P; P; D5 \set i (i + 1)
+ P7 _( Y" h- y# [( ~4 ^: }]0 b' I3 P" Z+ c8 V2 N( c
end- Q4 e6 W6 k7 y& D6 z; r( F9 a
3 m3 M7 x% o5 B
to update-global-reputation-list3 H, ?. u  @$ \
let j 0
6 Y/ k: d3 e! Awhile[j < people]
8 U+ I+ @& c: [! {' Z6 c3 Q& g[
( k' ~( ^1 c8 T4 o( j- x( E7 _+ w, slet new 00 D7 ?8 O( Y* x- I. t/ o
;;
暂存新的一个全局声誉
7 F% y+ b6 c$ |% `3 P1 \0 rlet i 0, [9 R" s) p7 i3 V
let sum-money 0
' j1 q# X2 t5 R# Blet credibility-money 0! b5 l2 b7 Y1 Q
while [i < people]
6 D- j* s, s' Z3 Z' U; w[  x+ n! W* D9 U% \
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
4 d. E7 V% a3 y9 v# _set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
! W/ N2 F2 M  jset i (i + 1)
( [9 ~1 @; w$ p. `. |6 i9 n]
9 D2 N  X8 E- R% E" |9 jlet k 0
( O9 |+ S1 B4 D) `* V" E9 Vlet new1 0
/ ~. L, T7 T. z# V' C- y% n9 P- swhile [k < people]
* m2 x" V5 B: v+ J& |[
; r" K  D8 M( r& I% V' u' 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)
& O3 H& j( A2 F1 j% |8 zset k (k + 1)
0 d5 O/ e. a: R& U* W]& Z; C- P* d5 A3 I' B+ ]( G9 A) ^
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
& f2 s; P4 r' p8 ]5 |set global-reputation-list (replace-item j global-reputation-list new)9 Z/ ^: i1 x! o) W, P6 v
set j (j + 1)
2 H/ a/ ^. v, C6 r]
) `) L# x) ^, k' Hend# R( x4 A/ |2 g

) ~, ?/ f0 M. P- k) E8 p* }' z' _% W$ V1 V2 f* c, s7 f: ^( @
/ b$ _* o/ z1 u- K$ u
to get-color
1 B$ x; U% U' X% Y( E9 Q. h) x3 ?2 S5 G+ `
set color blue

6 W( K% q/ y& c. J! y8 Y8 qend  w8 W0 T& O+ |) k

: u( c8 }6 w* f2 F6 eto poll-class! \. |) L4 H, u' L3 n3 R
end
8 [$ x# j2 c& Y7 [# H% o9 P2 T- G$ [2 F$ f
to setup-plot18 E# l6 Q! c4 C: z

% N  G: T3 J" j2 t6 ]set-current-plot "Trends-of-Local-reputation"
: u7 I/ l( S* q" e0 }
9 s* P3 h7 P1 {! f2 g
set-plot-x-range 0 xmax

9 F1 ]; Y0 d8 i+ C8 i
: k4 y9 P5 E2 ^& vset-plot-y-range 0.0 ymax
/ i- ]0 `" q  e( R3 d3 O
end: W1 v  L* ^8 o# X: q

/ \( P% s, z( J. ^( Kto setup-plot2+ L9 r* f# q: J/ t# Z

% P+ M3 ?8 k& j* lset-current-plot "Trends-of-global-reputation"

( Z  @( R+ ~6 w' u! {  o# A: p: g6 X/ C, e
set-plot-x-range 0 xmax
8 e8 j' O% a6 E( s8 q
, p) o2 u+ m  c4 s! T1 b9 @
set-plot-y-range 0.0 ymax
: ]5 \4 m; w6 _4 W7 q( ~! b
end
1 [6 |* _6 a6 O6 m5 C: l3 m' C. J3 V, g2 k
to setup-plot3* z. j+ p& H$ F1 m* d
3 f$ _3 @' `$ K8 ^( k- ^0 b
set-current-plot "Trends-of-credibility"

! f( B1 n4 L( A# J
" R$ ^) I2 A' m  Qset-plot-x-range 0 xmax

8 ^2 D! I/ h( c% z
8 _6 ^' d# ?8 G1 p+ Eset-plot-y-range 0.0 ymax

/ g! E. J5 h' K5 x3 {/ Uend( v9 i  `8 |* l+ x4 [" t- G6 H
* k; n8 }$ G1 J' [0 h! ^
to do-plots1 r3 u3 d# u2 b5 K% K* J- {: W
set-current-plot "Trends-of-Local-reputation"
) ?$ B7 p  Z9 o$ J  y1 @* Zset-current-plot-pen "Honest service"
3 O% S' K- r/ a% b9 |0 w$ s! ~end" G3 A) J" i  ]( h& S
+ l2 ^# J1 e* V! v+ i, m
[ 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.
  R3 k* L4 C/ x8 b% T$ c
. I; u: |( `" j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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