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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:" Z7 t5 F4 t  j6 D4 v# X( ?
to do-business - t- d" [7 n' `4 N
rt random 360( F9 ]* B8 `/ C- D$ q
fd 11 K8 y" e3 m& x6 e# f. S2 ^5 X7 a  o
ifelse(other turtles-here != nobody)[
0 I( k$ ^: ^* C6 }; f   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.. b+ f* Y" o3 c! r
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
# F5 g4 h+ m& h4 o! D% S' E/ ]   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer+ o" K9 e) v3 j2 z: N6 I8 ]
   set [trade-record-one-len] of self length [trade-record-one] of self
) `/ j" U  B/ C+ u+ x) b   set trade-record-current( list (timer) (random money-upper-limit))* f: @9 e( A7 P( O

" D4 B' ?3 t; ^+ l& I# @问题的提示如下:1 t- Q, Y& b  `+ P0 S
: F0 q1 N* w0 ^& n
error while turtle 50 running OF in procedure DO-BUSINESS) S$ f8 z# j- ]: G0 ?  l0 i
  called by procedure GO
6 {+ Z' l. t- I1 hOF expected input to be a turtle agentset or turtle but got NOBODY instead.5 @1 M. g& Y) ?, [/ {! D- D
(halted running of go)3 P5 V! V3 t7 S3 ^

- l0 M* Y) }9 }  S; |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 g. M5 D* T% \; R4 g. ~8 D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# M. v6 X- b# f. Q2 o
globals[
2 q/ w2 e5 [+ Oxmax
, R5 h4 b' G0 Z. Jymax
; j0 k# T# |) u3 J+ R8 @$ \global-reputation-list0 A: p! Y7 \( s# l5 q4 p
- i- f+ ?3 D, [
;;
每一个turtle的全局声誉都存在此LIST
6 R2 l  G, ^, e2 M1 L9 Bcredibility-list
. w; m6 A# ?8 j# \" m9 u;;
每一个turtle的评价可信度
, M* t4 o! ^5 n; Z/ h, ghonest-service* e$ i: [" k. X, q" x" K
unhonest-service
1 A- {: l! _7 Z- z. ioscillation+ q7 K7 L2 M9 ~! v  I3 I4 K, S; E
rand-dynamic' f9 ~% z' p7 x/ U" e+ r2 {9 b
]" T' N7 x+ ?( I: F4 F2 t
$ I% Y- r1 y) z4 l" E* f
turtles-own[
* |6 `! |' |/ i+ B3 Ctrade-record-all6 K4 K9 Y, b- \6 w. a
;;a list of lists,
trade-record-one组成
$ s3 v7 q9 p  vtrade-record-one
$ `+ |. U) x4 B7 s  |: C$ O;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录; Z4 P2 A; W* R9 Y3 Q

3 g+ f# ?1 J5 D# f! h" t, M- K& D2 r. M;;[
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]]) W( U/ s. Q2 z8 J2 [: |
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]
7 H' D+ _+ b7 {" z+ c* u" Kcredibility-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
, i/ X8 e% \& fneighbor-total& v, f( F1 ?9 \& j4 e3 Z
;;
记录该turtle的邻居节点的数目
" `' _7 D) I4 C$ c! B8 N3 p8 ytrade-time# Z* w3 X7 D7 p1 k8 L3 B, U
;;
当前发生交易的turtle的交易时间' ]; z& k& o/ i" Z5 Q; W1 D# V
appraise-give7 I' P6 e6 K, D, c# v5 r
;;
当前发生交易时给出的评价$ A, R8 i% a& d$ Q+ Y3 ^+ X
appraise-receive
( ^9 N; X+ G' T, }# b;;
当前发生交易时收到的评价0 T* M4 Y; |4 z. t
appraise-time5 `' p* U' J- B* ?8 {6 ~
;;
当前发生交易时的评价时间% Q* y( {6 R4 q3 M4 t- m
local-reputation-now;;此次交易后相对于对方turtle的局部声誉7 k% i- d' s3 J, v) _, @: Q
trade-times-total
2 i$ z/ b/ m% [. O- `, i. e. P( `;;
与当前turtle的交易总次数9 d/ m8 o) e' G# T  A3 d  x- K
trade-money-total
  ^6 n6 ~! v2 `& F" ?9 [  H) _  r;;
与当前turtle的交易总金额
, W2 [4 B- d$ Y2 K+ Tlocal-reputation6 E, E, r3 l4 R( U8 c
global-reputation
1 T- @, s0 C/ J# {8 L( Icredibility
4 y( W7 ^# ?4 R& o7 \;;
评价可信度,每次交易后都需要更新$ ?: H5 M% ^2 A, s
credibility-all
" G; u9 b3 R) o  N* P;;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
3 T$ W8 {- _* e  s) l9 C( w/ U# ^. P8 X9 G/ p. P8 e( x' 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
, S. v; m5 Y! ]# Y& _0 Ccredibility-one, ~1 @  l& _6 `* v4 h, y
;;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people0 k5 h: `7 s- n5 z% F: o  T
global-proportion9 d; z! D4 `& ]' Y/ ?* p
customer
! S/ h8 n' b0 B& }) tcustomer-no; u5 @5 Z$ _4 u$ C
trust-ok
* P( E7 ~4 h" z9 r- b7 V7 O. Ctrade-record-one-len;;trade-record-one的长度6 e/ E$ I/ Y  |) A
]4 A, t! ]" V6 Q3 m6 C
; D6 \9 w( x  z& ^: O; u6 A( l7 O2 ?
;;setup procedure; Z9 @% }! C- G8 \$ h; Y4 v

7 |9 n" H' |3 {) ^8 kto setup6 `% {3 |/ N# G' o) b' o* U1 j/ C2 e
$ _7 y% G& t9 F# _' H" B
ca
' l% S$ Y/ d0 u+ H
  [; {% u8 I. V, \
initialize-settings

) W$ n( N5 U$ J
7 w  P2 A% J& L  v$ D8 Jcrt people [setup-turtles]

" |, H$ r7 h) X4 X+ V+ p! o, l& }% K& b8 ~
reset-timer
+ n9 V2 d# u" @* v
! E' U1 S# R, L; ^( e, U- c
poll-class

: p) [- K+ y# B% d. n% J" t
6 ?; J% o& ]: K* b7 Asetup-plots
' H( Y* p- J: _! W% s& l

+ \, a3 G- g  {& Z8 hdo-plots

3 ]6 B  x; H& ?* |4 v$ F7 `- o0 Yend
5 Y: U" Y8 O1 f% ~+ U- i3 V9 j" `& Y8 p7 C% N
to initialize-settings
$ r% E( z' r# T  S- c, e- h9 Z7 Q4 p7 Y6 o  k6 {) W
set global-reputation-list []
! _: a5 G- X: @# l

8 F% F' x$ U) A7 U2 nset credibility-list n-values people [0.5]
! s6 c# Z+ D  C9 f; @

1 U" i7 w( ~  a& Z) ]set honest-service 0
- f8 @" g- I% ]! p- A, n/ {
: |+ }( \4 x9 V/ _# t! N& r
set unhonest-service 0
& f+ M9 R1 |6 r) f+ u0 S! z$ `* g' ?
7 Z! z( f! ^6 m* _
set oscillation 0

/ O6 G) e$ c  b& ]2 w% e
: o1 P3 p) Q5 j+ Oset rand-dynamic 0

2 ]7 [0 c/ K$ n4 z  _4 w! a+ K: e) L7 send
3 {- T% Y: b' ]6 @$ {# E8 A, i* B- r! F; R, h) T
to setup-turtles
) K6 j# i6 z, X% aset shape "person": I" b: k; d7 H% V
setxy random-xcor random-ycor
) ]: \# O! d) w, P- _4 oset trade-record-one []
7 m2 u- z; r: C: e  C0 U

1 Y9 q! E% r2 t: q1 Uset trade-record-all n-values people [(list (? + 1) 0 0)]
7 g; a, I& }7 F3 O0 u8 R+ O% W  M. n

) Z" s% \9 `5 ]3 {2 r# ]# @+ Tset trade-record-current []
# Y: U; E. X# E4 v( Xset credibility-receive []6 L+ G2 D( R$ _. b6 b% ?: V
set local-reputation 0.5+ L+ c0 I* ~7 }
set neighbor-total 0) c, a" \& a, s: n8 i
set trade-times-total 0/ l+ @5 {2 k+ A! e
set trade-money-total 01 p# a- L0 N( p" ?$ b: t: w7 m8 z3 G% H
set customer nobody9 r) B* J* j  C5 c/ M5 b7 n
set credibility-all n-values people [creat-credibility]
5 q- d  n% \4 V: Yset credibility n-values people [-1]
4 T: a) k1 S* t/ A7 ~) Kget-color
5 X; F6 ^+ n. [7 r- }( H  i" k

$ Q/ r: N$ Z9 g" c9 U) M! xend3 C5 C# E8 a/ ~3 G( U% ?
# e. u4 Z6 H$ V2 t6 A
to-report creat-credibility
& f4 y/ `4 x. P/ s4 }; z) W- Areport n-values people [0.5]/ n* [6 @- j- P( S: q& }# z
end
" A5 v3 j2 z0 b3 {* }9 w! o* o2 R* u0 c9 R' d. i
to setup-plots% b" e. s: }4 L. U) V1 D* r' e

" j1 P$ w! e5 a' }set xmax 30
% ]0 \" i# k. z, }5 l

% O( I, e! B3 ~) @# n4 K0 S! l6 Uset ymax 1.0

  B" _) M) x5 T1 p; B  F
) ?* R5 F" [2 A- dclear-all-plots
* r1 ^2 c& h% ]: R

: K2 y0 Z" B# G6 Psetup-plot1
. N( B0 y  C) O9 X

+ G4 p0 H+ y: n( X/ ?3 Usetup-plot2

6 z& S6 z' B$ \6 Y) K" s% o( b  L; H9 |( I/ E
setup-plot3
: O! Y5 ]- [) F' S" H  p' L
end) H" v* O* T' `: H, R0 ]! A

. B/ c# ^) j" N+ k! n! O" C$ H;;run time procedures
! k. R, o2 a, d6 ]7 Y+ W7 a# [$ F; F* L; W6 S& q
to go
7 y9 E( e1 j8 D9 M, U  \7 ?, j3 z4 i
ask turtles [do-business]
8 V2 k7 T- B% O. _3 E% l! D  W
end' x3 Z. y  L/ i2 g$ d

6 |' E: H/ S7 K+ G4 h6 r( Dto do-business
' v' h' R8 g9 D& {8 c
5 G% a& E9 G& y. K

* j" p; V, L3 Rrt random 360
6 Y1 n$ q& o' j6 N  K8 {; n* f
: {0 u, i( ?' w8 J8 a" C: q5 u2 N
fd 1
; D& U0 x* s0 s! Z* _$ {* w  f

" m- [& d& a, H6 Cifelse(other turtles-here != nobody)[

9 K2 P8 `' |+ T5 \
: H& m* k, i8 k9 O; hset customer one-of other turtles-here
, r0 j. j/ W0 k

4 C; R0 @$ _5 c2 r% k2 }" P;; set [customer] of customer myself
/ B" t$ _7 }; }; N# @+ g

5 J8 c, ?# c' X6 T9 X4 \set [trade-record-one] of self item (([who] of customer) - 1)5 S  n- Z5 w' A/ |! N
[trade-record-all]of self3 Q7 j$ _. u8 s- L5 B
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
- q: H2 ?* [9 n
# x; s" {7 `4 U- [. h  K
set [trade-record-one] of customer item (([who] of self) - 1)" o% v# v- w6 ]) F- m( z
[trade-record-all]of customer
+ m" v% M6 S6 m& I# a, T. }
9 e1 U) W5 w+ p: Q
set [trade-record-one-len] of self length [trade-record-one] of self
9 r2 O& ^! c$ o. R  u+ j( g2 y
* ^* L( M; X* i
set trade-record-current( list (timer) (random money-upper-limit))

% R0 Z/ n+ |* P
2 ~  ]* V. J$ f9 A! x1 c5 gask self [do-trust]% S: e, Q. y6 z% M
;;
先求ij的信任度' W7 Y# {: n: [
& ?3 [$ z: |% J
if ([trust-ok] of self)
3 A: c7 t: s2 b' j4 D2 U;;
根据ij的信任度来决定是否与j进行交易[
6 L" @' p3 P2 v4 S  k  ^6 Pask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself9 R& u2 L, K  G

( B- v+ c* a4 `7 S+ ~5 S  X* c[
+ V- \8 Y& U" h+ R
/ D8 p* B  S5 ?$ V: a: z* h+ F
do-trade

" T3 c% |4 s7 W8 Y- X: r0 s7 I& l3 a/ L& Z) n! Y' y/ v) m! g
update-credibility-ijl
9 s( @2 T. v3 R- H

/ D$ z3 g) p, Y0 F+ ]. B: Oupdate-credibility-list4 z' Z: F0 N" `; }$ ~
/ ]  M8 U4 v  r$ S& m

: ~5 \9 |( X. \4 U% \; nupdate-global-reputation-list

1 \: {5 o# b' `3 c
# R+ b, ~. W. r. R! e# Vpoll-class

. m2 \6 w5 T4 ^. v  p: Z/ A8 c
8 M6 g, f) T% D/ t3 v: z# R1 xget-color
8 C9 K1 C, K/ y9 t* c7 L8 n

: h8 E" ]& d: ]. P( @, v% P]]  T' h! k# f, X2 O) K- D5 H
/ a& w3 O; O% r: R
;;
如果所得的信任度满足条件,则进行交易. ~" m* s+ ^* ~3 D: H. {

) f9 c. ?$ g! c[
& S( g% J9 K5 \; f
( j; l2 P% w; G4 ^# O# E5 [! Q
rt random 360
. G' W- V5 m9 [, N+ ]+ `
1 S* `% Y9 n& H( i( X
fd 1
/ b! ~1 L. B; \. z
' F$ E- K5 y/ b( q% ?3 v
]

: P5 m- S8 |1 Q: E  B; C- l1 c
% {% \# l( v$ ?' S7 yend

  K; ]" P' w# P6 t( c8 Y+ M0 [, O' c9 F; M, G$ U
to do-trust $ K" _9 v8 d: G# l! r
set trust-ok False
+ m* F4 E8 H% U6 N; S6 l# d
* e; M) ~. h; _! S" v0 O* w7 F' W( C

$ h0 C+ g; y, ?# g* x; alet max-trade-times 0) v" u1 S4 M" a/ d5 d9 F. y
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
1 \* e  W9 N$ V! |( A4 dlet max-trade-money 0
5 a& X8 C- L; A& m( _foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
, y1 P9 V6 q" plet local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))- p4 K+ j, T4 Q, |; A

1 o- A7 N" h0 I8 m+ s  m' |9 V
; p3 V3 g1 v" |% |- \
get-global-proportion
4 ]* y  q3 M: Z, Nlet trust-value6 C( l+ [+ g5 m2 `
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)

# Q9 `8 M; r7 ?2 V* k) c1 nif(trust-value > trade-trust-value)
/ _/ V4 q! B4 g9 }# C[set trust-ok true]
& q5 {! e) ]( i) ]4 K' `end8 t/ b* r* }+ o: u
0 Y. C1 J" m2 |0 s$ W+ V
to get-global-proportion) a, w7 S2 @/ v
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
- y& o3 {; o0 M% C3 V. x9 ~" b, u[set global-proportion 0]
+ x) R& F2 ^7 O[let i 0
: q  [" W; S# U- @  N) [0 m4 Plet sum-money 0
6 F7 }' @, s4 Q5 I; _, jwhile[ i < people]  ?1 m, J! Q6 l# [
[
, d( f3 ]: `( U- r* U8 G, N% C0 wif( length (item i
' w* B5 V6 ~- j6 |+ W; s) T4 [[trade-record-all] of customer) > 3 )
! W. M; Q0 P  a# Y+ z! l" }
[+ S! E* N9 X% q3 g
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
, t6 u- G" v+ A# V' Q% D  h. ]]
% M: N& L6 ?  b]7 O+ k% D7 a6 I* T, M5 K' ~" i
let j 04 K9 ~1 I& y- j! S9 b! o
let note 0
5 K6 i. {7 c9 Xwhile[ j < people]
" C! Y) _0 Z; f[( i# o2 i/ g# q0 |* o
if( length (item i
9 W# b- t# x& s% I6 v[trade-record-all] of customer) > 3 )

$ m% K. N* d6 g- o' \[7 q; F7 ~! _6 y/ q2 |$ _2 E
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
! H) q  ]4 h+ b. r, f[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]8 I# S4 `+ H% G# n* Y! a6 @( Y3 [9 D
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
. Y  Q/ ]5 B3 X* k]
" u6 m" L1 P( R, o, @+ K]
5 o4 _9 R2 ]: Tset global-proportion note
4 R7 s1 c2 y0 t6 M( c+ h/ M. x]
: T  Y! U- y: U9 {6 K- i, X* ]end
, W$ q" \# A6 H! V6 O0 Q2 f5 `% f+ V  x
to do-trade; Z. H! i5 W; i; i% N
;;
这个过程实际上是给双方作出评价的过程* i! V; f/ Z. V& w- l
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
! x% u2 x" L% b/ }0 r# H% eset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价/ O" x. ~9 f# W5 n
set trade-record-current lput(timer) trade-record-current
/ i3 m7 @, X, e# e;;
评价时间8 b! \3 Z  `, R2 M3 s. O4 B
ask myself [, z8 c0 f4 _$ N+ F* l
update-local-reputation) d/ h/ g0 B/ T, p2 I8 x/ j
set trade-record-current lput([local-reputation] of myself) trade-record-current7 I# x; y" N8 Q
]' m- ]2 L$ R+ [1 U
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
4 L: ?- h6 v5 P7 |: X* e6 v" E;;
将此次交易的记录加入到trade-record-one
$ w) f9 X4 I7 v4 r. hset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself); ~% k$ w, o5 y: |4 [1 G  f& l: q
let note (item 2 trade-record-current )$ L( m( Z2 P0 r, G7 T' A
set trade-record-current
/ t' d7 u& V" ], A2 P(replace-item 2 trade-record-current (item 3 trade-record-current))

6 C9 w0 T% t! ]. t" g, p6 hset trade-record-current
, E) q0 w# C3 N9 D6 N9 j. H3 Z) ^(replace-item 3 trade-record-current note)2 V7 O5 }0 ]& _2 ^! u

, m  X/ P, F! T9 o* @0 U
+ E& A+ {" ^, o( B, x; s: l. }* z
ask customer [
0 r) ^( O0 |3 O* ~" n& {8 T" gupdate-local-reputation
4 x# t* L) n+ H% M: L3 b  i3 y, Bset trade-record-current
4 N+ i, }2 z, s3 o(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
9 W: k- I+ g+ F9 b& G9 N
]5 S: @! H6 |0 G$ `- @; F8 |
% \7 ^7 {) \% R6 l
3 M6 K2 H4 k% D+ p5 [
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer* H% C0 [; I! ]
  K- c  [' v0 J5 o
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
  m# m- [7 [: I  H;;
将此次交易的记录加入到customertrade-record-all5 H% E+ x8 [& S8 ^1 K  V
end" M, V  k  y( l3 |0 Y
+ K0 ^, R+ U9 h4 @* u* Q
to update-local-reputation+ K2 q' b% j; j! z! X9 V
set [trade-record-one-len] of myself length [trade-record-one] of myself+ p; M- |9 O. e

8 m( G* k% L8 B' C/ ~, w/ w8 P4 Z0 @9 V+ M2 d
;;if [trade-record-one-len] of myself > 3

7 l$ M# }, _/ q8 gupdate-neighbor-total
8 M) w- Z% }& @3 G8 a;;
更新邻居节点的数目,在此进行- I1 R$ o2 ]* C* D; _
let i 3+ O1 I1 n$ X: L  |- g: M( }
let sum-time 0) P- w( J, k5 b3 d: \& ?6 Y
while[i < [trade-record-one-len] of myself]4 _8 H9 d! B2 n" s" O6 C. L
[
3 d2 q0 n7 l0 H$ {; g) P9 ~set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )3 s! t2 I3 H/ P8 T2 N
set i* i+ f; E$ r/ s9 U! ?$ J1 ^
( i + 1)
8 b7 x; B4 A! L- t' ?, }; M, o
]1 h7 Q. \7 Y& a2 c0 `& ]1 |
let j 3
3 A) ^( ~; G0 p* J. Vlet sum-money 00 K- a, v+ P; S( f
while[j < [trade-record-one-len] of myself]0 o2 E* R3 \  q8 M- s
[
2 J8 M) B) b7 x3 J9 H3 b* O# O1 a  L8 Pset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)6 P0 q- L+ @) e: V3 [
set j
' N" i  a; O5 J$ y. Q( j + 1)
% \) ?' C& N2 A' H0 s$ m
]: S6 z! f3 @+ l0 x" W
let k 3
0 o# t3 i# Q" Wlet power 06 M! K/ l  H/ B- L: J
let local 0+ @2 j4 g) C! e) K; U9 M
while [k <[trade-record-one-len] of myself]
2 m' ]! @  l* j* e7 r[
4 V9 G& O1 }7 \. o8 E: m' W, Cset 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) * E* J, j4 b7 R6 ?6 d' K# Z3 i
set k (k + 1)# U" c9 x9 q/ q; |% n* t1 ?
]
! T- O: r( w! r9 q& Uset [local-reputation] of myself (local)
# H/ s' l& A. l& S$ uend2 Y5 F% m! G" q2 @
9 E0 j* y4 N! |; e: ~
to update-neighbor-total: Y, O; `% Q4 G

! i) ~# ]3 A$ V  Iif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]4 f8 d  B6 h4 f- Y8 ]
; |, l- D, P6 D' Y* e/ h( D" A
. ]# b( F! p$ V$ x+ l# K4 H# Q1 R0 C
end
" h2 e2 l( ?5 h3 g$ _) ^5 [. s% d/ \; A
to update-credibility-ijl
, @- i3 `; u1 T4 y4 U
( |0 C8 `, Q0 ?6 [8 [( K: o( i;;
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。, K' w: |( V$ M& S; Y) C
let l 0
4 {( A6 r" c' H! [7 cwhile[ l < people ]
* c* Z# ~) i6 q; ~# \! D# i5 g;;
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
, W" U$ m4 F: w# U+ b; m[
& K3 {# P$ n2 hlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)- b/ x2 a8 {( Q3 y
if (trade-record-one-j-l-len > 3)
6 z" O# c8 x( y* g, q' C[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' I2 C0 F  e1 d
let i 3+ ^1 m# C, y( d1 F. A& a
let sum-time 0
6 ?% l; `; U/ C" v& Ywhile[i < trade-record-one-len]
3 G' f/ B7 \/ G9 P* l: z[
+ \/ p: W; b& D+ r" r# ~set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
' n- i+ b$ n, e: qset i
  y% v) ?* z$ {+ l: w& N7 }( i + 1)
- Z' ?# C: Q( k( P
]
/ h- m) \- D% Z4 p+ U" J% k  Slet credibility-i-j-l 0
7 r, K! L- ^7 _. ~' H% {;;i
评价(jjl的评价)
. Z( V4 N: L8 K9 f0 I9 elet j 3
1 F" k" r$ L7 q. ^+ S3 |' Elet k 4
* B$ L1 i- Y6 R! r- D: swhile[j < trade-record-one-len]5 K8 j5 K7 A/ B+ f/ X+ [1 [* b0 M
[3 g* ], s2 {0 c5 t# l+ y7 c
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
& C3 z6 A$ l/ R3 D  r9 g7 |' Uset 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): s- [/ |' z- r2 W. D; X- T' t
set j
% s- z( }( Q& K7 o8 |( j + 1)
) n8 C3 A, j3 ?' w0 G4 h  P8 I; O
]! v' i- W) e2 o8 J8 J) D+ |# i
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 ))
2 h9 z& J' t. K* H$ z: {% X4 m, Q0 L0 ^
, ?; H) Q- w, S* I
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2)). y; y+ t( ]: H8 ~$ q$ [+ D
;;
及时更新il的评价质量的评价
2 b9 u; \8 K6 A! d, V- Jset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ], P4 k0 C1 P6 y2 J. d
set l (l + 1)7 k7 @( p4 M  e! N
]1 r" z/ j9 C& {/ V% Z
end
- S# ]4 F1 p: ~+ X, j7 G( K9 q6 k7 U3 V
to update-credibility-list# G' ^; w* Z1 ?( C, z0 `( L$ H
let i 0/ O0 k* i2 n5 C0 y% p1 `; ~
while[i < people]* C; t2 v  ~& Z" B5 @* [
[: Q& M2 U, I# k. S; u9 @
let j 0
$ |& s+ i3 d/ E& Z7 u* o# |  Wlet note 00 p, @) I' v0 j+ j% j; P
let k 07 V1 X+ c1 ?1 C9 y. C  e
;;
计作出过评价的邻居节点的数目
! e$ S9 M6 c# u. L+ U% Qwhile[j < people]/ F% ~4 G: {" s% T: ~
[
' Y3 z7 m1 B: }* v. A( A# E" S2 I. |if (item j( [credibility] of turtle (i + 1)) != -1)
# o9 t/ H! n; b. W  q: J;;
判断是否给本turtle的评价质量做出过评价的节点; k) `3 N0 j# p/ ?- P' Z
[set note (note + item j ([credibility]of turtle (i + 1)))
1 Y) B! e$ p! u* X1 e/ x! v;;*(exp (-(people - 2)))/(people - 2))]

/ v% o0 Q6 b5 |& q$ u6 x4 Jset k (k + 1)! K4 C& o  Q- ?$ ?" k8 R
]
6 H0 U' V* a: z& b; eset j (j + 1)
+ D! Z3 Y; A# d5 a1 B; C]* E! H! H' C/ s. M
set note (note *(exp (- (1 / k)))/ k)/ L. L5 |5 ]5 H3 I/ ~% {
set credibility-list (replace-item i credibility-list note)% g% P2 k) C, z9 v1 `' ^
set i (i + 1)
" n" i; A) R, Q: x]4 p/ U% n* w2 w+ t" H
end7 T; _& E  v" G* o5 f! }, }
8 G0 M! l2 K0 p! P# j! \) B0 e
to update-global-reputation-list+ w0 [6 n3 l) X) o+ J
let j 0
9 L; x5 j2 e3 X2 w* Owhile[j < people]4 n% U8 z) }6 |' J: r+ J' N
[
4 L) `+ ?5 @: Alet new 0
% Z% R7 C) g, q) b  O;;
暂存新的一个全局声誉; @" x2 x) n: H" w" _$ E
let i 09 b" q# R; }9 q8 i8 \4 g
let sum-money 0
& @) O# s& |2 l) i0 ?let credibility-money 0
  ]0 D& ]. P! u: `0 ~3 D% E( zwhile [i < people]
# R# w9 x0 F( e" U# M8 x[
3 o( V  @3 S; }$ F3 z7 Z+ Vset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
3 q% Q6 E8 v$ I  x' ?set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
8 {5 C( }; e# ^3 Uset i (i + 1)
$ a- F7 s$ h2 E# |; ^]
+ d; F# x+ b& T; Zlet k 0
: |* E# R% a8 X- G- M; @let new1 05 ^3 Q$ M9 ^* r5 y7 N' {$ c
while [k < people]" J1 Z( z2 a" w
[
, P/ h: \3 j+ g! z& g0 {; 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)
! {6 K4 [& c) w5 d4 oset k (k + 1)
) u1 _( {9 U) v+ x( @) J  G4 z]
# ]0 _* J9 g% h; U- `$ w; z' a8 Cset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 7 _, c; B/ D1 @% c) O
set global-reputation-list (replace-item j global-reputation-list new)
) I# i, t$ |( @' Y& p7 {* |set j (j + 1)* S0 p7 w: g5 r& u. f3 R, K
]
; \5 k+ X4 C6 v6 Xend
5 y+ f3 ?2 v( B% C3 n: o3 x* Q- O8 O5 O. e0 y- q5 A9 L7 d

$ F! O. _; }3 ^8 Y0 ?, z- L- z  c  _) h6 V' u: T% f& K
to get-color
+ v) o, |; W4 T9 f' T2 N. e# r$ ]( V. J, b& U/ J
set color blue
" c: Y9 r& K  p' |0 N6 `" A# R4 I
end- s, @, _3 F& m6 V, k/ t( T

& l) a6 a" f: V/ H) Xto poll-class
7 U) Q. i- _3 X* T- m& iend
' W2 F' E0 t( l
3 _! S7 Y! ]  e) |& o) J. X8 j8 \to setup-plot1
0 Q3 J! {; C- }9 w' r. q
, ?/ O) K# ?; K6 }: qset-current-plot "Trends-of-Local-reputation"

: ]7 M" h7 i% x4 w: h  E
& ^( G4 I/ v4 \1 P1 ^$ pset-plot-x-range 0 xmax
! l- d0 F, n8 i9 t) x3 U% \

( q- y+ }1 `* Vset-plot-y-range 0.0 ymax
0 V5 l  s/ b" F2 T
end6 [; w% M( a$ G+ h' A

& _2 i' Q6 z* z! K! [to setup-plot2
4 t' r6 n2 B* G& f5 q$ e: T4 V* G% ^
set-current-plot "Trends-of-global-reputation"
# [% ]1 P& L0 a0 @* N" x8 ~) a

8 S# B6 J& D* f1 I3 E5 sset-plot-x-range 0 xmax
- g3 i8 E9 ^8 \+ |+ a
4 t. P0 x- i+ z! g
set-plot-y-range 0.0 ymax
" t) P& T/ r. O* s; w" z/ Z
end9 m' n! U8 w" @* M
. W% b, o( F1 A6 L
to setup-plot3
& d4 B( S" O( h1 E( F* j3 n0 H: F
- f" ]$ n0 n7 v6 e7 Cset-current-plot "Trends-of-credibility"

9 p; P8 y1 a  Y5 F, ~' M2 H& Y, y  T, c6 t( _  c: V8 ?, J
set-plot-x-range 0 xmax
- `. t4 r/ c; H/ a# ?7 }4 I

3 y* h5 t, b7 r; D  @: P2 [- o' \: Oset-plot-y-range 0.0 ymax

7 [2 m; L. u5 Fend
' ]0 D5 h7 P- N+ V4 {. D8 a: Q$ H0 M+ q+ Y" @
to do-plots
' d7 F/ r  {0 Q" d( sset-current-plot "Trends-of-Local-reputation"$ \4 h3 d& @! [5 N
set-current-plot-pen "Honest service"
& g1 x3 S: q, cend3 L9 U. W0 ^! F* k) {5 x
( f/ H4 F: {0 C6 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.
0 D8 D# d5 z1 f5 K6 F" h* l
& X+ l2 w. j3 [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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