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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:
9 x* [) c1 a/ ^to do-business
$ m9 J  G: I% U" H) @8 [ rt random 360
5 }/ f6 e, i- I. B" Z- I& L fd 11 m9 H7 B6 U# G5 ^, ^! F' [
ifelse(other turtles-here != nobody)[
2 y" e# C! A( |" I1 O8 \% B9 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 q" t. b" U7 Y$ [: F
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    $ ~/ W. v7 G& J+ T* q# C) i9 i
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
& K4 W, }0 q' ?   set [trade-record-one-len] of self length [trade-record-one] of self2 ?7 w& f! B+ M! e8 ~# U2 z
   set trade-record-current( list (timer) (random money-upper-limit))0 I! J6 Q% p$ k8 O. s. I

; P* o7 H$ k* U" y- k问题的提示如下:
/ k6 x7 p. i* k2 N( G& t# k+ M- z; v) K" @; S
error while turtle 50 running OF in procedure DO-BUSINESS/ t5 P2 F& S7 F; R- \$ j$ e
  called by procedure GO+ M& C- E+ m" p; d% c
OF expected input to be a turtle agentset or turtle but got NOBODY instead.! R7 N! A3 y  d7 Z2 ~* I
(halted running of go)" x6 S) q2 Y3 ^- b

5 ]7 O& p6 a) B. d& h7 [. W这是为什么呢?我看到一些netlogo中自带的例子也是用这种方法来找turtle的同伴的啊?期待高手解答~~
0 z; R% ?: J; A% m  W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
. A  D( d' `/ h4 D/ W& Cglobals[6 k& I' |. T1 e$ a6 n. C
xmax, t5 p# b8 T5 h( E4 `
ymax
0 _) U7 b; A& _; d4 @global-reputation-list$ h" ~! D/ \' `; N! t

4 U" L1 ^4 `: q* y;;
每一个turtle的全局声誉都存在此LIST  R- z4 h" O" Z- }: d  l+ c
credibility-list
) |( M, ~7 o) c* N;;
每一个turtle的评价可信度8 S, M" N: |1 @7 W% w3 k
honest-service4 N2 g+ L( |4 f8 }
unhonest-service
/ l/ H, q. [5 h# H) aoscillation
1 S4 U! `, y8 I! E2 o8 orand-dynamic6 P2 }4 e) `7 A
]5 r) V: N% g8 `9 r/ B
9 N: O; k$ U! e' T
turtles-own[5 i" H' g$ x* B4 L, `; \& e$ Y/ k
trade-record-all
8 U/ E4 [1 v- @9 k2 Y;;a list of lists,
trade-record-one组成
# E; \# K3 L5 f1 ]. Gtrade-record-one- o3 ~9 m$ M9 i1 w2 i3 [* M" L4 K$ 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  @" T' j% w& y7 F
* w  c+ k8 S% h, |3 {& 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]]8 l) c6 X, P0 \; W  m1 _  @
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]  l( q, M4 Y$ n' x& E; K2 _8 X0 a. y
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
2 Z' H# m2 H  I6 S" Yneighbor-total; o; {6 E7 W6 Q% y: ^; k" l# M; A1 v
;;
记录该turtle的邻居节点的数目
! u3 J6 S, D3 S6 d$ v, Rtrade-time
6 L; B7 F6 ?3 @5 J;;
当前发生交易的turtle的交易时间% C- @* W6 s, x! p- j8 m; Q
appraise-give" x% [* V- }4 ?8 M  W3 z/ D. a1 [, n2 P
;;
当前发生交易时给出的评价' n* S, X8 }% c( R
appraise-receive" i& E) u. o- H9 [: [
;;
当前发生交易时收到的评价
4 _" ^. N/ j! yappraise-time2 Y$ S+ j7 B. j( z$ l
;;
当前发生交易时的评价时间; t. S9 Q1 e6 \# s
local-reputation-now;;此次交易后相对于对方turtle的局部声誉7 G/ f; t2 n. I8 k9 M) f
trade-times-total
6 W. t- `! _  Z7 [! s* I. Q;;
与当前turtle的交易总次数
# F; }2 K3 v7 U( ~2 V3 q0 Strade-money-total
' x; k: v% B8 X. E* H, W;;
与当前turtle的交易总金额) [7 h  {3 R/ v  A4 U
local-reputation
4 l7 e9 {. d+ nglobal-reputation2 h. J: \2 N& E3 @
credibility
% U2 a7 h4 j' _8 E, R* [;;
评价可信度,每次交易后都需要更新/ V, I% S/ v: q* S7 h& r
credibility-all
" I; R" [9 e! e# t$ z4 Q  v$ I7 z;;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
- H$ ^7 C. d5 M" w, R7 j( j6 n1 i% J: x: k) v# x: Y9 t/ y
;;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
; b$ h1 E  R. n, Vcredibility-one2 e$ P7 N* z+ P0 ^. R2 I+ K9 I
;;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
% R* x( w% W& v, J/ }* Wglobal-proportion9 q8 K  ^3 z( S$ w
customer
  R$ `2 J6 Z9 ]* _0 P- a# M% X9 ^customer-no
. {" [% A* ]/ t) O& o# J# d0 O. mtrust-ok
8 h2 @6 x  A7 _/ p( \- `2 b. Ttrade-record-one-len;;trade-record-one的长度
' \6 p, l- Z2 m: q4 s& H, Y]0 w& T+ |4 W; ~6 o- _
* ?0 S# }1 g" \# r9 }8 e% V
;;setup procedure
3 y+ D- [# h& [  u$ ^9 C2 m6 |: C
to setup9 }, g3 z1 Y# F- H
$ E& D+ V: \3 o4 r0 M5 y' w8 o
ca

) i. V) X8 b, k9 F. S$ M$ i$ A# X) S0 Z1 o1 n
initialize-settings
) P! ^. n+ f0 E7 p7 }

" U" m: V8 [/ M" W) ^9 Z: hcrt people [setup-turtles]
; c7 F+ Z& f! `2 G2 S& r. \  a1 a
% q+ U# P4 u2 _1 B% A
reset-timer

$ z" O9 b: L4 q+ e; J7 p7 D+ Y; [# \! k8 O. K& Y7 ~1 x' @9 T
poll-class

" r! ?( M7 A4 ^9 L- K* f$ q2 b1 Y
; P( W! o6 [, a$ J+ Z/ t9 _+ Vsetup-plots

, v9 m6 T) [5 G  j. {$ D
* w# I( R0 x8 E0 k' r) h1 Qdo-plots

6 n7 X& h9 S) pend4 w9 b/ @" I0 o

1 U1 _+ s- k# X" f2 z. h+ oto initialize-settings  A4 Y. u/ v  F9 S- J  m5 \. w- G' `  M( `

: r7 K' s% e8 O" tset global-reputation-list []
  J8 @& D0 w4 B

; `- t( r. i( L7 x! o) vset credibility-list n-values people [0.5]
& Z6 }/ J7 t6 j2 A, Z9 K7 R
3 l' i  Z) H; v4 [
set honest-service 0
& L& v2 H5 B9 D' a/ e. f2 Z
. V5 w6 y: c5 k& b* S4 h7 T
set unhonest-service 0

; [2 Q  F! }+ U9 [, H7 @
- L$ Y0 s  B9 n/ ?& M- Dset oscillation 0

9 |1 b7 h( a: h( E" z" |
8 _0 r) I! g: `. M# Y# M& w* @set rand-dynamic 0
+ c$ P- v  r2 U+ U
end* O/ Y0 p) v/ ]

& |+ g0 u- Z9 X1 c' Sto setup-turtles
7 c$ E5 O7 x, _3 z# Kset shape "person"
8 |% L0 |1 W" D& j' G7 E6 H; ssetxy random-xcor random-ycor
! ^% X1 E% B) u3 z8 ?set trade-record-one []
" B$ G/ r' b& O8 R

3 d" i# Q1 C: T. X/ ]3 c0 }3 Q4 @& k6 Xset trade-record-all n-values people [(list (? + 1) 0 0)]
4 K- N; U4 ?/ Y+ g% B/ m- T! V
. l  J, U+ ?1 {9 j
set trade-record-current []* x4 F8 [* f' _1 H. ^
set credibility-receive []. O$ r- c) }1 ~6 g# s4 O( A
set local-reputation 0.5; g1 O- d8 p6 ?, g1 U3 {* ]
set neighbor-total 0
" ?  ~' k. `2 u$ Rset trade-times-total 0
! f' m2 g( N+ @$ N* j: N1 Mset trade-money-total 0
1 y# i4 r, P! ?; K2 X, ~4 U$ O7 eset customer nobody  N% X7 r3 s" I" _7 P# c
set credibility-all n-values people [creat-credibility]
' h0 D# Q$ e9 W+ }3 }* `; Jset credibility n-values people [-1]7 q) U  {* M- Z8 w( P; T; n
get-color
& i! ?: |/ X( N5 Z
) h$ u( v4 T; w( o- q
end/ v3 [. }  j7 |  h1 a
$ t/ Q6 R* i6 y/ O5 T- E
to-report creat-credibility
" ^+ n, v/ ]2 Q, ~. x! _0 }report n-values people [0.5]9 L0 H: ~- }, }1 Z, K1 f& P* s* \
end
4 Y9 V* |9 R: f) B3 d- Z
% \* I! Z* e2 k; Xto setup-plots3 N7 Z- m" {1 M9 }
& C2 ], E  O, [& @' ?
set xmax 30

* M- R, x8 B9 u+ Q
% Q2 N, r( u9 f+ Qset ymax 1.0

; ]; g2 w- d7 y# v* x6 A+ U' P3 v) f+ V& n
clear-all-plots
' I+ H8 D! Q4 A
5 y* Z* M/ p8 k! a4 b! j0 j
setup-plot1
6 q& \& A# C% r' Y( o! L2 V7 @

! G3 v. w3 f9 qsetup-plot2
6 h" ~% B9 J1 T  F+ v3 v. g0 z( F

. w5 L4 k) ?; c+ ]* o9 ?& u. B4 w5 Wsetup-plot3

! C+ E! `3 u) v& mend
% J- P5 p& t- w* i+ M  g
  h: C, O& K" p3 G$ P9 l$ k;;run time procedures0 _" u9 z: E, j: u$ }

1 R- X& t9 Y, uto go
+ a8 P+ c3 d% D4 Z1 l
1 k. {8 ?- H% @" uask turtles [do-business]
( ^4 p! |# t3 S2 C( z
end
- S1 i7 M- [$ H5 L' V# [' |% q% Z' ~& M. ~
to do-business . ?5 j& R, y+ d, O8 g6 V5 J* X
% ]& v8 j& }7 |* u

# x* U6 I8 ?: \* R7 [8 e8 trt random 360
  ^3 p* e& I; u# I4 S7 U3 A

1 w1 Q& H0 ^1 ?: Qfd 1
7 U( }( c5 ^0 x  [2 I( `. d" O

! O: d6 ~& j5 X& q, R5 h  P8 B' kifelse(other turtles-here != nobody)[

; Z0 {& l1 E+ s# k; M* d
% r) U- I! K. N+ a1 r+ Eset customer one-of other turtles-here

, |) C. ^( d3 W; v; ~: J( T% s# V* ]6 Z" Y4 c' o* [
;; set [customer] of customer myself

: U: O2 c: S( G% H* o* k  l
7 M2 f! d/ n3 d$ \set [trade-record-one] of self item (([who] of customer) - 1)# S0 q9 O! @3 f& }. o7 Y7 }
[trade-record-all]of self
+ I  w, U1 b( U& m;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
  x+ X; l( k. n! y5 M8 {% ]9 l
* ~' \2 q+ F8 c! ^$ z
set [trade-record-one] of customer item (([who] of self) - 1)* p0 j; K" |8 b# D" ?( ^7 S" j
[trade-record-all]of customer

$ H: [0 }% X; P6 }- F/ |# d- G. y9 n4 U: l$ r
set [trade-record-one-len] of self length [trade-record-one] of self

2 y9 D7 [2 f0 Q' T$ E0 g; ?, J
2 D& \* `9 \2 f0 l# h: s6 nset trade-record-current( list (timer) (random money-upper-limit))
! v! e& M+ J  }2 A, e- e" }; O

0 M$ y2 s. S: F8 U" p1 Q  Xask self [do-trust]
* B8 D' _$ f* t( ~( z% G$ x;;
先求ij的信任度6 ^" m8 ^- N. {

, C; W+ e$ u+ ~. W- J) B% ^if ([trust-ok] of self)
# I" q: M- ]& j7 B5 C: `0 d9 M;;
根据ij的信任度来决定是否与j进行交易[  [7 Y3 I( e4 x+ B+ E
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself: Z  W# Z6 T5 D  v2 R/ K- V! i- H
6 ^6 T" R. r+ G) d# @+ ?9 Q& S
[
, Y+ D% n9 ?+ e* y+ J7 l: u
9 E) e2 X3 L& ~2 |) L! Q
do-trade

6 o9 o, B7 Y! B! }. d: G% I" \4 L  W! S. q1 \% G
update-credibility-ijl

: k; X/ G& `1 J
: ]1 G6 K5 o, `9 Tupdate-credibility-list
+ q: U# q$ k; Q+ _
: F2 ~8 a% |$ M
7 R0 d. c( G5 m/ Y( @, [& u
update-global-reputation-list

* p6 K8 A& }7 s3 Z2 V- R$ y; A9 R% S* i- K# M7 k
poll-class
2 X- w) o5 j( a% V' G  v( t8 p7 q! Q
' N. D. R4 A6 |0 b& t
get-color
' p4 n. I. x2 q$ y! P9 s5 Z

9 \1 A( p8 k% J0 y/ {]]0 q5 B4 R! B. ^- J9 i* n& ?

  {7 _  O' q  j; b! y;;
如果所得的信任度满足条件,则进行交易+ ]( t' i& U# k9 z! x

" I7 v6 d+ V8 W6 }% |[
1 T- z! e& e$ o2 ~4 V% y

8 N7 j* ?5 z! g* D) Ort random 360

6 e- H6 r& k( ~8 G7 Q2 b
' y8 Z0 ~1 P3 R& z# m; F) C# Ofd 1

: n$ q" O9 G* o- Y- I3 n8 c8 C  l  B
]

3 o0 o3 z! x8 j+ c' q* O% p
% ~; i+ u" a: v" J8 y& r( Vend
4 r5 F3 {( ]5 R) l5 F2 e) p
4 S' Z( Y( v# w' k
to do-trust
2 \: c- F- O  d$ ?: u2 W# u9 Dset trust-ok False
, o/ A* K( c7 e# z, e/ W( a# X+ n, B- N; t, N3 o+ S

( v( K1 J9 I+ a1 L; z4 ]% wlet max-trade-times 0
5 M$ l1 r; y2 M. Kforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
! z, |7 G. z$ ?# Llet max-trade-money 0
' u- @/ D* X' U5 Pforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]6 J3 k/ B2 C7 }1 P- }" K' F8 \, z9 V
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
# @0 s9 B6 @) t) }- p' K$ _
" ^" q  R0 U9 D3 ]; D% H3 G  W

& k* Y" {( h0 ~. gget-global-proportion
7 i, G1 O9 v7 _& a( a5 Slet trust-value
0 t9 }& W7 ~9 r4 G5 t( Slocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
! N+ v6 X8 ]$ Z3 q2 I! w+ O
if(trust-value > trade-trust-value)
# _  O+ v' X  D. l[set trust-ok true]2 K# C  h( d& s5 Z5 V+ d5 `4 c( P, S
end) Y1 Z: ?' ^) i- M! Z2 S1 C+ o

" U+ }# `" l$ Oto get-global-proportion
# H! i. d& o7 tifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)6 M0 Q- u& ^- t5 r4 f
[set global-proportion 0]
2 c! E9 h# J" Z; ^7 o% U[let i 0
% I$ \: w. m7 Q) }% Llet sum-money 0
" y2 X5 r: Y( O) ~4 B# Twhile[ i < people]
* T+ c/ {- f. |  e[
  i& t6 B- V8 f# Qif( length (item i
) ]- q* S4 S& E2 M. y0 L$ |[trade-record-all] of customer) > 3 )
6 M7 s1 Z' W! b' M) d
[
; o* }4 X( x* e' {set sum-money (sum-money + item 2(item i [trade-record-all] of myself))( \/ C) U) K1 l  M' v( t
]. n  ]9 p, G( h4 p. ]. f5 d" p) t
]4 T; `6 m+ M" B
let j 0
4 d. F4 o4 E2 Y9 ulet note 0/ |3 ~: u6 l( E$ K( _1 d5 y
while[ j < people]
( {* ]( q+ G+ X[
) v0 k7 d6 ?( |, h! Kif( length (item i  l# o. p1 O; P  u* p' w5 q
[trade-record-all] of customer) > 3 )
9 p( \/ Q  v/ a
[
2 ]- `$ H& ]2 C! fifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
; G2 r8 H2 i5 M8 e& ?[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
$ D/ |8 r4 y1 M- j0 S3 L[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]( Y: R$ P( D- _6 T/ A  J7 z
]% X- r! F3 Q3 K+ l0 i  ]
]1 Q# |/ M5 Y9 d: B& t, h3 x0 [
set global-proportion note. U. E1 O" m- y
]9 k$ M8 h( ?- b1 Q/ n, }# y
end9 F: P7 G7 f8 H  v
: C9 v5 M! d! Z$ R7 v- N9 {! n7 x. t
to do-trade
- k; Y/ L* s" m& ]- D;;
这个过程实际上是给双方作出评价的过程
3 ?4 b6 s9 J; J% j; pset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价. i' m% Q# {/ ^1 b* N/ i6 u
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价. t0 g' k; B3 D3 F& q
set trade-record-current lput(timer) trade-record-current
$ @  k8 f( Q8 v7 ^3 P;;
评价时间
& H3 p6 {: X4 U/ i% Qask myself [+ ^* q" N$ }' O( y  b# K+ w$ T
update-local-reputation1 b& m" f2 @- g: K3 z
set trade-record-current lput([local-reputation] of myself) trade-record-current
2 K4 q1 t3 X5 U) _3 y0 I! D" i& T9 R]* B* ]9 f+ k, o4 P# K. \" F
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself( o2 J7 A! r# {* Y4 H
;;
将此次交易的记录加入到trade-record-one
  F  ^& p- z) L1 W# C) A7 Tset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
" _. V" }7 w. |0 f% j; `6 Qlet note (item 2 trade-record-current )
. e5 z4 ?3 D1 Z. X& o" Jset trade-record-current+ T9 W% p- G% ]" X7 D) E
(replace-item 2 trade-record-current (item 3 trade-record-current))
8 |( [; y: ~: @& _  o& R) n
set trade-record-current* x( A# j( g7 L4 |
(replace-item 3 trade-record-current note)7 W) a! W9 l: i+ H* t+ g

1 L! O- @. F$ @& B5 m

% A9 `7 t- ^, f& d* u9 o5 \ask customer [8 y& j4 |8 d+ B, D8 e; ]
update-local-reputation
" Q8 f1 T7 j% K/ g7 i6 kset trade-record-current
1 X# c$ J! X5 x* u( k(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
" G, [2 s: ~' Z& y; i; n
]8 O4 m: g. u6 W( M
/ v8 @0 B- s, _) ^) d7 P. e6 D; f

4 |: i. q/ T; |" }9 B, p. f" x/ Lset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer. x! E4 X- n, S; s; z
% Q& v& X3 T& ~* [
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))  z% g& n' z+ m) \3 K! e/ ?: g$ w
;;
将此次交易的记录加入到customertrade-record-all
/ z7 I" }/ }  Tend
3 e" }0 ?! v: ]6 r* @$ C0 V5 L
to update-local-reputation  x1 T4 ]* i4 a4 S5 h  M
set [trade-record-one-len] of myself length [trade-record-one] of myself
; M0 ?2 I+ i( A& r/ P9 v( y. j  R: H5 N3 w4 o, a& P3 K( i# b

. Y2 ^3 V+ i3 F* \7 h' A;;if [trade-record-one-len] of myself > 3

0 U- C9 G$ P6 o# Y1 [5 i: [" fupdate-neighbor-total
5 N3 ^% x; {3 p6 _# p5 X;;
更新邻居节点的数目,在此进行
+ h$ ]% x% c$ ^$ ^* ]9 Slet i 35 J0 ]& f& d* u  |
let sum-time 0" Z) P7 D3 ~4 ]: G
while[i < [trade-record-one-len] of myself]% T- ?0 G) ^  o* c$ z+ X7 F
[
4 t+ c4 _$ B- a; E' X4 {set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
& z' h9 l2 w' k' l+ T& Mset i
0 }& X  ~2 D1 v( t" P7 Q8 A) [: [4 f( i + 1)
8 T/ g; F8 G. [) w- a  q$ U
]
- T  C. s+ [' G! O% B( N, H- n0 V" Ylet j 3
- h+ W. U5 R! m9 ?* nlet sum-money 0
% G) d% Q1 {' Jwhile[j < [trade-record-one-len] of myself]( g* R5 k: ?3 N9 d9 W7 p/ w4 S. w
[/ y! N3 F* }; x3 L
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): t& b/ z! A8 b$ o) S- @# w: t! U  P
set j& Y1 q" n8 f/ q& k
( j + 1)

6 m) F9 I6 k4 R  S' q$ @]6 o- D1 a' m# Y/ I& C: P
let k 3
' B6 t* z5 J6 ]* s4 b& ?/ d# Z  wlet power 02 L! C* ]1 V; y
let local 0
6 i0 q. |; B: e. V  m. k3 g- Hwhile [k <[trade-record-one-len] of myself]
5 r+ ]% w1 o" z[
4 |6 K- D$ A& {, Vset 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) , |4 r5 E& v( H9 d( L
set k (k + 1)
/ _/ u! [$ K7 c+ p]/ c! Z4 ^; R/ d
set [local-reputation] of myself (local)# L8 u0 r5 i0 q6 ?/ M, S
end
, n1 s8 p% \: o: w0 s/ C9 Y: r8 ?8 B& \, a! V4 F* Q3 d7 c$ q* G
to update-neighbor-total
6 o# H/ ^& L6 f" ~. r2 u/ N0 K! s
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]. ?# k9 I% k3 Y9 Q- o- ?
* {8 l$ p3 s4 o) ~+ X3 I/ E1 d

+ Y- s6 C9 T% s9 g0 qend
0 a6 f; e  q  v
$ @) g: u+ t; V) bto update-credibility-ijl 7 A7 ~# K1 |- q9 h- j& T! F9 [4 @  d
+ {! d2 X* A9 g  {6 B* D
;;
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 W5 d- C7 z. W3 i) ?1 \4 Tlet l 0; w" F# }  f. Q0 u6 ?1 P
while[ l < people ]( g1 X! b. I7 f2 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$ |* h/ T0 N: D3 V! p4 d
[5 `+ n; M# F, R9 w5 |# F  X
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)4 g# |. Y8 w! h
if (trade-record-one-j-l-len > 3)
, i0 s# c6 P4 g: _! D  ][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& x9 a3 t$ b' y2 m
let i 3- N+ N( M' q8 k# K1 q. s
let sum-time 0$ h5 M) b$ [* f3 i8 s/ I
while[i < trade-record-one-len]: e( i+ u! \  G3 M: `
[1 j+ I5 ]! `" O7 S/ W6 @1 j
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )/ Q# L1 |# }; \- d8 i+ ]$ W: {5 s
set i
* `1 Q8 w) Z0 @5 `# N% w. m- k( i + 1)
! b2 k8 O, I9 b' {! u& e
]' D% v9 u% x3 v
let credibility-i-j-l 0. `& L/ x* x: N# p9 t$ N) [
;;i
评价(jjl的评价)
) s+ e1 M# F, Y9 ~8 y" F1 ilet j 39 A% ^8 m5 ~9 [8 f. a% p
let k 4
7 \$ ?) b1 @7 I7 @9 P5 n9 @' Rwhile[j < trade-record-one-len]
. A* ~0 L5 W3 s8 P$ X6 E[- h$ B( J! T1 M3 p
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
9 {3 x1 a+ O# m5 eset 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)0 C9 e" ]; I6 f  G4 H9 G
set j
! |1 v) K5 R" ~# \  v$ \( j + 1)

5 \6 S4 p( a4 S3 x]
& i6 j" L0 b2 [) T% a8 zset [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 ))
/ S  x+ p& V7 l; |. g
/ t' \$ \8 y; U: ]- p; _
9 Q& j# C2 w6 x6 h
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
* [2 w, K  M- E" t, Q* J;;
及时更新il的评价质量的评价1 J- I& H7 g& L5 |& K* @! [
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
3 O: c! X4 W' wset l (l + 1)
" y! r/ d4 O3 i5 w  W4 ?# M]" N0 a" l5 a" d) u+ s4 _& j
end
% L4 T9 D; b1 P* u7 B: j. J7 {% v! a
to update-credibility-list
( H, R$ d! r- V. P) U, R% glet i 0
$ k: C% M/ |4 E/ M4 qwhile[i < people]
. z) }" b7 S6 l- A$ f% e[4 @- Z9 F& H0 g$ v( ?7 i
let j 0
6 W6 l' G  P9 _8 m: dlet note 0: a- S' `* r$ C, _9 h* p
let k 0" @) Q! a1 S7 X6 y$ G: a
;;
计作出过评价的邻居节点的数目- e1 T8 i( Y* f: q% |. L- p+ @$ Y
while[j < people]' l2 K; O" N, h/ t& X4 N+ j
[
5 j$ D$ w" Y6 f4 mif (item j( [credibility] of turtle (i + 1)) != -1)
) n$ H9 ~& C4 q) `; j& `4 \4 p;;
判断是否给本turtle的评价质量做出过评价的节点
! n# q* v. Z. V  Z[set note (note + item j ([credibility]of turtle (i + 1)))) e+ c( V" F/ _! K* a1 ^
;;*(exp (-(people - 2)))/(people - 2))]
' d. X+ ~4 I. m4 q, i  G: m  b
set k (k + 1)
) E+ g  w: p3 y8 y1 v. u]# b) p6 P5 n# e4 _" \7 ~# I: p& ~; G
set j (j + 1), M1 b  w. ~2 F' G# Q0 \( I
]
' s' O. h; z5 P1 o; X0 H- N8 Uset note (note *(exp (- (1 / k)))/ k)
# K) c& l: K9 P2 {9 K" m0 |: jset credibility-list (replace-item i credibility-list note)
  c  R$ }" V/ M; _8 O9 v) aset i (i + 1)
. M' `2 K+ J1 |0 t6 |/ O]* E! ?) {: p8 B( f. }
end9 [% B; u: y+ w0 a2 X% q  }/ i
7 U! O! w! E8 m; e) @! b  C" Y4 f
to update-global-reputation-list8 E' C1 X$ F" V' X- D
let j 0
3 @6 `: _! s2 C4 Y* |9 W0 x7 ywhile[j < people]/ O1 `. X: [1 d' ~+ ^
[
, Q7 J6 U/ T# H- M8 F! @let new 0( n! j8 J% W2 ]9 J6 K
;;
暂存新的一个全局声誉; u: ~  X5 u1 @2 ^* S% L5 d2 P
let i 0  U' j. z5 D4 q* T
let sum-money 0) x4 ?% S3 A% j: l, S/ j
let credibility-money 0* \* e! o8 @- x% k& g# k
while [i < people]( [$ E1 \+ o, {& t& y! u1 ~1 y
[
/ A8 \5 k0 d0 ]( A) m6 Nset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))3 T1 b/ z  `3 e" h( {
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
! b1 K8 F1 F3 {5 n7 hset i (i + 1)  G) Y8 M9 Q8 j, G, Z3 w2 J
]
  p+ I; @. d" i1 m  O% r0 n/ Olet k 0" }8 a# q& h$ D% ^, t
let new1 0
$ u: G. I; t$ C; D) P% ^) ]7 uwhile [k < people]
: s/ m6 d' W: ~6 R* d. V! U) g[% R$ f; F) f, X8 w# m! H4 n" q
set new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money)
3 m; O' ]0 w! ~' |" k& b. Q' qset k (k + 1): [/ T" h( Z+ S# O
]
; A! l5 h1 v$ H; wset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 0 o( k( h2 J% D
set global-reputation-list (replace-item j global-reputation-list new)3 e% K- c1 B5 R& r! t
set j (j + 1)
9 C% c, R5 b0 D3 h]# h. c# Q1 G8 x! }" \: y) ?& G
end
' I2 Y, l: ^$ w! Z8 w' L- M& A. l9 ~1 J# }; m( [; a/ C0 T

1 C3 U% L! h9 B
* |1 k1 u3 b5 d0 `& O: c" N3 c7 y/ Wto get-color- I4 a6 |* S/ X4 P% A
+ R3 f  L0 q- v% ?3 A5 c4 i
set color blue
2 P6 @2 t7 j5 L+ v! g. N
end
( c: ~- g% E# D2 R/ F/ {; p0 \" T' }' ?
to poll-class
6 T: ~) }8 u* h* F4 f$ tend7 d, \( V) s; J! m  x& D

  y4 h2 V! J" r* `1 w2 S, o: {to setup-plot1
" ]1 \+ o/ R8 b7 J  I/ \5 |
) S0 a0 P9 A% jset-current-plot "Trends-of-Local-reputation"
% ^  `$ D! o( X  ^, Q. ]  w

/ Q3 c- ?+ y+ F7 G2 A* U; o% Cset-plot-x-range 0 xmax
- `& K3 M8 B9 B" v+ o

2 i" V' _1 f) O$ @) ]set-plot-y-range 0.0 ymax

8 K" g0 F! E8 nend
# P2 R/ F7 W, G* {
6 @* |$ h$ [1 j% c- cto setup-plot2' l3 g: M: s, P( g

; S5 s7 p' D  l' V/ J2 z; Jset-current-plot "Trends-of-global-reputation"

5 g4 @8 j$ U! I, o, }- |! e0 x/ p: }& Q7 h- \
set-plot-x-range 0 xmax
: I2 A- K* }3 T& ~3 u+ e, o8 o  H

  q0 o+ H  ^# P  O) zset-plot-y-range 0.0 ymax

- l1 p4 P- l) [  @end
# s- f; o3 F# K1 ?3 ~6 D0 W; f! A  x2 z5 ]& z
to setup-plot3
- l! O* a7 m, S/ S7 j) L  @" F5 G6 A7 E7 k6 y
set-current-plot "Trends-of-credibility"

/ i7 C; R+ z; e+ S! a( m7 F; x
set-plot-x-range 0 xmax
! C2 m3 K7 [1 V
5 Y6 f) x! i+ g+ V5 i
set-plot-y-range 0.0 ymax
4 q( d6 n& o$ z! v4 Q3 L3 q$ }$ p  Y
end
' j( j3 B) q" d. V6 s6 I+ m- U7 Q0 e! K- b, z* g2 E
to do-plots
% S- d1 P; Q$ Z4 x  ?" J  wset-current-plot "Trends-of-Local-reputation"( X* f* T% L3 N& ?' F  t# Q  n. m
set-current-plot-pen "Honest service"
3 y7 r1 Y% J# }- {end3 p7 \. ?/ K0 }) L+ X
2 d9 P" Q' G+ w) ~) g
[ 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.- v- s2 n" ?7 m: M  A/ J. \' F. @
3 n- C: P+ U( z* v/ c' c1 F
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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