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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:
0 e1 @2 L1 l/ Pto do-business - x$ `3 x$ w: N' R) x! H: H
rt random 360
5 X' {' g9 `1 w5 N) U fd 1  m& n; l4 ?2 {5 s- T8 @. w2 r6 \, H
ifelse(other turtles-here != nobody)[
% r3 Z2 w5 @: `/ t   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.; e, m. F# i9 h7 |. E0 g& a$ z
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ) ]+ T2 T7 i4 p* Z; j8 {3 }0 ?
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
1 ?0 z7 ]* s; Z+ x/ t" w   set [trade-record-one-len] of self length [trade-record-one] of self  M" `! J" u( _7 l6 q' l- H* [8 p
   set trade-record-current( list (timer) (random money-upper-limit)); Q8 i( }  r. m# W$ _
6 K8 L* {9 V) F) @8 Z, B+ w# z
问题的提示如下:
& {8 g4 W/ O9 R* q- z4 e& O
) s: W+ t, M2 H) Ierror while turtle 50 running OF in procedure DO-BUSINESS+ ~1 `( Y3 Z' j+ R/ R1 W$ m  Y
  called by procedure GO
& W! {) u/ F4 r! ~4 HOF expected input to be a turtle agentset or turtle but got NOBODY instead.; k2 `8 l( C, P! c& E% o. n
(halted running of go)
! m0 K) b0 H& g0 _
% }4 |: E& x6 O/ j% 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~~5 q9 G1 @9 ?  h' }4 K, {
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
/ Q2 Y' `; H, Mglobals[9 e: X6 ]$ S9 G3 W* h0 w, }% _0 ~
xmax! ~% Y  ~  E; a6 N
ymax
8 P: d/ S' l7 K" t3 Nglobal-reputation-list
3 ]$ R6 b( z8 j' H* x6 i
& [& R. ]+ @& @: y;;
每一个turtle的全局声誉都存在此LIST7 R- K& j6 Q. s1 m8 G
credibility-list
' v3 p% {( |% n9 a;;
每一个turtle的评价可信度% [; I+ _) r; y# |) Y: [
honest-service
6 N1 }# c2 U1 ^unhonest-service
" [5 Z9 y% U5 q  H  ~5 d/ q1 Joscillation: C. ^% l& U% Z
rand-dynamic
3 H+ m* U5 b1 X! A0 ^/ N]+ @* e7 o7 O5 ^8 W; L& B* H5 {' D+ m3 v

( O1 j: k+ t" F6 [; l% {turtles-own[
, g5 g$ P8 S2 ?. L' l. M) }trade-record-all+ F6 l: ]- |8 W( j8 g1 j
;;a list of lists,
trade-record-one组成- h, |3 r5 {3 |: w( R; G; B0 {
trade-record-one
, y5 f0 F0 Z9 s1 T0 @;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
0 s% }1 h! {: V) Q* y
, p0 l1 I2 }. b, k: D;;[
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 u$ e+ m7 T6 M7 B# t- ytrade-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 I/ r# g" ?. G9 T
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' f7 [/ s- ]) b8 A2 B+ V
neighbor-total: L& C- V9 t& j6 Z
;;
记录该turtle的邻居节点的数目0 z: H' d6 H+ ^  K' O8 n3 N
trade-time* P) R' F& S; E3 U
;;
当前发生交易的turtle的交易时间
( k* [" s' w5 j1 rappraise-give
4 H9 C/ p0 s4 F9 Y& i2 {- C2 ^4 W;;
当前发生交易时给出的评价
6 K0 j+ \* P: X, Vappraise-receive
* y2 l0 L# j. W5 l7 e# D% J;;
当前发生交易时收到的评价. K. F, I6 r/ s
appraise-time
" z9 W: E( V, n% r& {* Q' ^. C  G6 s;;
当前发生交易时的评价时间
, f6 f5 K# H+ C0 q7 b& _local-reputation-now;;此次交易后相对于对方turtle的局部声誉7 n5 R, D* a6 l& `2 R& l5 u& ^+ A4 Y
trade-times-total% U3 m& g, I8 ]  h
;;
与当前turtle的交易总次数+ ~5 \/ U4 K# A7 l! g
trade-money-total
  ?7 s0 C/ r6 y  ^;;
与当前turtle的交易总金额
2 h2 F7 x+ W" s" y1 l/ O, t* S1 qlocal-reputation
( I  b. I( \0 {* E8 ~4 {: Z" H  oglobal-reputation5 k: F7 K- W" V
credibility. B, x! l( g" b, @: }9 C
;;
评价可信度,每次交易后都需要更新7 L, |+ S7 f+ m( I& M& y
credibility-all; H) [2 a  h: [6 N; J
;;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 J8 Z& V: _7 \2 y4 D+ `6 }: ?  {" d' k
;;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. l% S- l3 i; g% E) P' i+ |
credibility-one$ k! G& S7 g' D& 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
- o/ I8 H1 [8 f! h) I- M2 \global-proportion
4 t8 N; b4 M! z$ l; ]customer& e, h1 [4 @- o- `
customer-no0 h( |/ n1 y" K1 y2 h( ]
trust-ok' P: l. n& J& a; W  S
trade-record-one-len;;trade-record-one的长度
. X. \3 M% u* o) T]( z/ O# ?4 m/ e0 @& h
$ ~9 R' E8 u6 L+ z2 y/ {8 X5 X
;;setup procedure
4 k7 B+ Y5 k$ y- J- S
. N6 N% ^  l. l3 H. z; Nto setup
$ c  I9 o$ j+ f- x6 ~, s& q, R/ ^8 |- T' S
ca

9 ]: w0 t$ S: C! f
* ~' L" |/ A4 }2 J* iinitialize-settings
! F& I3 v% {( N0 i; y

" R7 o* o9 ]" S& `crt people [setup-turtles]
" Q" g1 U, n# x+ }; G
" l2 n- p0 K$ K% Z$ k; j& A. X
reset-timer

6 x" N# U, Q  Y! Y7 C- ~. O3 a  U0 [, {& y0 H# z* o8 R8 v' j
poll-class
# e1 Q  [9 J8 N5 X  a9 c# P7 D

6 h0 T9 z3 T* h4 ?setup-plots
$ h4 J; y; O: E, j
3 D# c- b  j% A6 v( u/ R
do-plots

9 g4 H+ o8 J8 ~) u& J: Mend4 g& R3 S7 F0 \: y8 A* x0 b
/ h- ~' _+ y9 q) }9 ]  c
to initialize-settings
! n2 y$ g4 h, {' U1 S
; E$ C: G6 q+ B3 A6 [2 wset global-reputation-list []

' |8 ^, k/ [' F- r1 k( q$ G1 n3 I9 k
set credibility-list n-values people [0.5]
- b! u5 Z" M. B% ^: O

% m) W2 O* u1 N4 b( W( Q0 dset honest-service 0
1 Y! _5 A% ?; B; s& L/ G
9 k- Q0 H6 @; E6 p; L  Q
set unhonest-service 0
4 i- p8 |% `' L$ @  N6 y, G5 a

3 o) T" w% D8 e; qset oscillation 0

3 g' I" h5 r3 r& [
' P0 G0 J# T4 F* A! w" lset rand-dynamic 0

+ t4 _: I6 L3 bend, X8 d3 o$ M9 Y5 a3 c( U
) V0 ]* d7 d7 l5 o7 ?5 q
to setup-turtles   P6 a  z" h( }* l6 i
set shape "person"
/ ]* E2 g$ y  u' o, zsetxy random-xcor random-ycor
7 L7 o. z0 L3 E1 zset trade-record-one []4 k0 Z9 a4 `( S0 e0 O  `
& R3 ^0 ?5 F, J3 _$ h; q6 d6 M
set trade-record-all n-values people [(list (? + 1) 0 0)] / B" z3 c7 m- V0 S

! p8 ~- u+ a. c! v" a  ?set trade-record-current []1 z  T2 ]0 }: s. A, u
set credibility-receive []. x" {' l0 M  d: S0 z3 c) W
set local-reputation 0.5
& f' Z9 B$ g8 B& L, Oset neighbor-total 0
0 x( O, z6 q' L: Wset trade-times-total 0& |& i+ \1 Q1 `- q6 G
set trade-money-total 0: m* I: @/ s# ~* X( }
set customer nobody. N' I4 H7 U$ V+ B, S
set credibility-all n-values people [creat-credibility]8 \) S: y5 o5 S: c0 f# c4 B! A4 }/ F
set credibility n-values people [-1]
/ t4 V, \7 w3 z- ^get-color
# Z1 m3 F+ E( @. u+ }7 r

, M$ S) j" `9 n6 z1 Hend+ l/ E5 `) z8 q
5 ~  |, E6 c: s% f4 u
to-report creat-credibility
4 U: A1 {- r) mreport n-values people [0.5]
* ?( B0 x7 z3 [  |% gend/ D* x1 q4 [; I* R
, @% r$ Q, C, Q7 z" V$ e+ x& M
to setup-plots; j+ ^+ L" Y3 U- u; E# r

* A$ y" q/ ~# j+ d* E* ~) aset xmax 30
; [2 l0 ]; \: F

4 G" m" C: v) C5 c) l8 M+ hset ymax 1.0
$ S1 y0 }9 \8 E( A( R/ C0 l8 y3 P
. T/ O8 q+ ?& D6 L# j8 `9 q% D
clear-all-plots
/ C/ ^) j4 t7 \+ j! X- Q
" @4 M! T2 f7 P8 a
setup-plot1

+ M! g; H" I. W
- V1 u5 u0 b% {4 N) V, Isetup-plot2

1 M$ Q0 ?$ x- E4 Q& t; E  ~1 `
. S1 U  }! r2 ~+ hsetup-plot3

" B% H1 A* }/ F1 ?+ mend  M+ Y* M1 i  R, ^8 R
2 w6 K5 X& D3 E8 f
;;run time procedures+ v* B! r) T5 ?3 S2 T6 h3 n
) w/ E$ T( D4 [3 y2 ?0 P9 W9 V( ^
to go
# ^1 f! `2 ^5 Z2 X1 f. w
, `8 \1 x6 O8 T0 S5 h6 w! B+ aask turtles [do-business]

: ~; q. P* v! q. T1 `end9 u3 C: n! q6 i
$ W+ W' E0 R5 q2 m# K# s/ n, _8 B
to do-business
; X. k' H! Z( p$ K' b

6 X( r+ O7 L" Y8 K; N1 X9 D0 c# Y$ O+ C
rt random 360

3 O  r0 m# T% U
8 g5 M& X) h4 f6 }, |fd 1

' O$ B  o- {; g
! Y# ~1 j- q7 r) o+ s( Pifelse(other turtles-here != nobody)[
* S8 _9 h: c. Y

# c; }5 O6 ^# |& s  bset customer one-of other turtles-here
3 k+ {9 X  i6 z6 `7 ?; U3 V" x
/ I, W# O  W/ J3 @( }0 B9 r: d  A
;; set [customer] of customer myself
1 z& W! D8 O' O) F& U( S
# x  m! J* g& o, P3 n8 y# ]9 m
set [trade-record-one] of self item (([who] of customer) - 1)
0 O( m8 g3 f$ H3 ?6 s. O6 v/ X[trade-record-all]of self
* o2 l( l6 Y* b;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

: V4 q# }$ K: x+ `2 H  k" b, a6 e3 z( [5 m. ]) J0 |
set [trade-record-one] of customer item (([who] of self) - 1)5 }7 B' H# s9 A7 i5 S
[trade-record-all]of customer

' I# p0 L- ?; C" Q/ @2 b& {# U1 g4 \$ E8 _2 x& Z) m
set [trade-record-one-len] of self length [trade-record-one] of self
# o; {5 e+ z2 {+ A
" F/ m3 h0 x( |
set trade-record-current( list (timer) (random money-upper-limit))
& V' T1 Z' @: Q+ Q+ Q7 U, n
% b) g, |" Y; Y  h& ?* N
ask self [do-trust]
* ~, L; W+ ]- k/ S/ R( ~! E% R. V;;
先求ij的信任度
& `; }, W- j2 ?) Z: x$ a8 T1 Q( K7 [( g* i: W
if ([trust-ok] of self)
4 A$ m) S) a9 i5 E+ K- T% {* ?6 G;;
根据ij的信任度来决定是否与j进行交易[% I4 S) c; n- l: ^2 Y
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
1 t' H; k, {/ I6 E- v! M# i. {6 O, i/ n7 F0 ]+ `- C
[

( Q: v, G: B8 _  E' J% X! }1 K! p9 `
do-trade
0 N( j  E# k& ?- r" I0 N$ f
) W, U% R1 s& Z  O1 q
update-credibility-ijl

) X! N" r2 ^. o1 N" x! ]5 {. Q
2 L$ J0 K3 t0 cupdate-credibility-list
1 U7 |8 U5 c8 x' }
* s: H; V1 \, [+ D
3 B3 c0 y. Y$ h" _
update-global-reputation-list

. Z; C, D, T/ F+ ?3 Z6 ^0 u0 f( t# k2 L" [- q
poll-class

6 ]# X) n' h0 G5 t9 r0 ]% x' C5 t& [* [9 d7 m
get-color
; ]: n# x7 G. E: p

% m9 y3 b8 h- m  B]]( x+ p: E7 ]7 d; d% l+ C  v

) s' J% w% D% H;;
如果所得的信任度满足条件,则进行交易" r0 x4 t; R2 A" U+ p* G

9 w: P  a% n* p9 `$ O/ }9 l[

8 d! a* ~0 F' D2 M5 S, {- Q. \' j) u) }8 V; N6 x
rt random 360
- x; A, z+ j: G8 V" x  M
$ q, T  }( ^. X: L- t
fd 1

. `, f% |- |2 ~( L; x3 J; B$ I( z: y; K: p5 }0 C" n7 ^
]

$ {  {7 @. D' }, p, o) `$ J/ C0 {, E8 Z  p- W7 ~5 u$ y& R
end
7 e5 O$ H, c" a

  N2 v* i  y$ }3 v* s8 @7 mto do-trust
. B; ^$ |: C: b, w" eset trust-ok False" Y- k* ?4 `2 g3 @6 P4 Y

! n$ H# [  _: V. I( [! @

6 A' v" I8 P) O- R% U5 A' v# Blet max-trade-times 0
+ e; e/ V% ~4 Y/ v  H! Fforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]; i: g3 B6 i0 b! ^
let max-trade-money 0" V7 e0 x0 l" w
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]" z  K# U/ N; W. f' X6 H1 e
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))+ F' ~+ p# V4 g) ?3 l, q* u

3 y* U+ w2 s# `8 t$ Q7 z

5 O/ h0 E2 i8 L" @get-global-proportion7 _; r6 M7 {" @( x% j% q" o
let trust-value% w  ]* I! ^% b- k' J
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)

, {/ j3 ?8 ^; w/ ]' I# n6 j( Z7 s9 Pif(trust-value > trade-trust-value)1 i; U  q2 j6 V. s& @
[set trust-ok true]; v+ l' Z. y6 I- a
end
  ?* L% h5 w3 N% W
1 t  ?( ~+ l$ Z. \+ Eto get-global-proportion4 n, [9 v6 i+ z( }4 b8 K, F
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
8 N/ H9 _4 M6 }4 t! H[set global-proportion 0]( H! z7 y: z6 w/ F
[let i 09 D' {$ ]' n( r' n8 Z
let sum-money 0
& l% |) q9 d! z: |. H+ pwhile[ i < people]- s0 f- @  ~$ M9 o
[
: S9 b, H( Q  pif( length (item i
: D9 Q, \# L& j& `- _" P. [[trade-record-all] of customer) > 3 )
0 z$ D/ |7 z5 O' v# y
[* @8 R0 M0 G# H, _/ Q# _
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
) v  n0 O3 y9 z) o6 m3 r]7 T4 c6 h9 P1 z' b0 z& t
]. I: }/ Y" {: F% L7 t  W
let j 0
7 }# ]% t% i5 s# X0 O: klet note 0: N4 c. W; `$ c, k
while[ j < people]
  Q, l: I, S) c/ C: y# T[& X( w& Q. U% Z+ c! }4 E' t0 w
if( length (item i
9 {9 H7 V: u: {6 @4 W' Z! Y$ v, j, e[trade-record-all] of customer) > 3 )
+ b4 c1 }5 z  E3 G
[
7 m+ S6 e  g$ W$ z% I( u/ Hifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
2 ^$ E/ M. F! z# i! W; C1 A[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
$ g5 }9 X9 K- E5 j% A[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
' F( p8 X( R' [% W& }1 x  o5 `]' `. v# `0 S5 U
]" t3 ?) S' ]$ p5 Z9 V1 S
set global-proportion note; N# h2 N. }0 R
]. g" {  [  ^: A! z% r: h1 [
end
* e1 z1 X) I4 z# X& ]) h' U# x/ O, A3 M9 @* \. p7 g$ c2 u+ ~6 X
to do-trade
. i8 A3 l( p# ?8 K;;
这个过程实际上是给双方作出评价的过程5 z! u: K) a* ?. y# }  |  s$ r
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价- _( t% |' d0 p. L5 }
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价) s. Z8 f) r6 G
set trade-record-current lput(timer) trade-record-current; z8 W9 u" G' c2 |
;;
评价时间
" x. `" U5 f2 q1 H  j: M8 s) |ask myself [! Y# _! ^( I' _' C$ R) D
update-local-reputation
& V: l1 |2 p1 H) c; \set trade-record-current lput([local-reputation] of myself) trade-record-current
% G/ S# I! e9 N: J2 t]* r9 f4 R1 K* b9 B: f! s* T
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
. i0 U! p+ J3 b;;
将此次交易的记录加入到trade-record-one7 ^7 H- t2 s0 k( R
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
8 x1 B  V3 D1 ?! V* A  v4 X3 Plet note (item 2 trade-record-current )
7 R# v: p1 T  Z# y& Y/ ?set trade-record-current- p% {5 Y0 @6 e, D4 {
(replace-item 2 trade-record-current (item 3 trade-record-current))
# b$ a1 U, z, U; c- }( T& j
set trade-record-current$ O1 c# j- V$ Z$ e) ^5 |) ^
(replace-item 3 trade-record-current note)+ `7 l* Q0 Z0 _  p% r+ h
$ M! p0 F4 r6 N. u8 `/ T; l
; N0 n& B3 a( ?- c* K
ask customer [
/ K- E/ p  i) h! j+ z8 ]) O9 D2 X2 nupdate-local-reputation: M+ {7 o2 o5 i7 p# P: n' G
set trade-record-current
9 M5 ^& V8 O; W% W$ Y(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

6 ?1 L9 Y9 T! r# x0 }* |2 i], r- q% t7 l" K; `2 Z/ K. w, c9 O$ L5 w

: X5 i8 S3 M- G, J
( x  Q# H# U% ]' e- C$ q- i: p
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
& c3 ^7 a6 |) F3 }2 H( b% m
8 a, }8 B& N- K
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
2 L6 {1 u) E5 t/ n2 J: ^$ O;;
将此次交易的记录加入到customertrade-record-all
! j; _. T* H: C/ U1 zend
; T! H" K4 S1 J/ K1 x; W2 w
8 i- F# L- z' F4 o- k$ k: \) Ato update-local-reputation
2 o8 V: p0 b5 S7 L) X& kset [trade-record-one-len] of myself length [trade-record-one] of myself- G4 H! g1 ]% }9 x: \) f; T
) b& _- ~4 e7 G
# o' Y5 E. u1 ^% O0 ]+ ]
;;if [trade-record-one-len] of myself > 3
/ t' w" n4 m1 U9 P8 ?2 O- q
update-neighbor-total8 x7 G& J/ b5 w: _' l# @0 G
;;
更新邻居节点的数目,在此进行) z) |4 u' W4 E
let i 3" e0 ~' [; q( e. ?( `2 ]
let sum-time 0; A0 s. ^2 d2 {; G1 ]' ^; l
while[i < [trade-record-one-len] of myself]+ d8 ?( X2 K! _2 I6 v! j
[: ]0 M/ S) N3 |9 m& r/ e
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) ), K6 ^6 D0 w+ }) K
set i" ?9 s) `8 i" W3 |9 Z
( i + 1)
9 S3 {( W: ?0 W# n% b8 i* W
]
4 T* _/ @6 ^2 g- p3 \let j 3+ n2 z' \  a% v1 f5 j7 n; K
let sum-money 0( }. y1 u3 A/ H) i5 t
while[j < [trade-record-one-len] of myself]) C' W* D( S2 q7 |& K, Q! R4 m
[
8 G0 Q, |4 i: ?5 C: `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)/ ~0 m; a+ u( V9 [6 I" T) ~" Q
set j
$ |" L- z7 x6 f- ?( j + 1)

  y; J. g( y$ I$ G6 M6 c: y: @]8 B- K6 X' w0 G* O* g
let k 3
" n9 I6 v6 F. |; ?: _- Plet power 0
( @# b  r. H) B+ D4 R0 x4 x% V8 ulet local 08 {+ R1 V) X0 Q$ @; U6 V& G. |
while [k <[trade-record-one-len] of myself]* P9 ]1 V) U$ J
[# J- |% F' r! u! Q6 A% t4 Z
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)
" Y8 W* v- T8 Yset k (k + 1)
! ~* D$ |( A1 L& n/ z]
4 Q# w2 j. s& ?" J7 X: l8 B; Dset [local-reputation] of myself (local)
" r8 }' ]0 b' [( ?9 d9 {% M9 Lend9 h+ q. D4 ~8 v" h5 }
) V6 X: z. a6 J: g5 R' d8 }
to update-neighbor-total
5 X6 M. {7 b" g. t7 e0 {$ v9 X* s2 N5 c2 G+ H. y
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
) C( l& V2 C/ w1 F5 v) i" @; d& X# J  ?0 B0 \% E/ q
/ c) e- q- Q2 P8 f, a! u! z
end5 v9 S' n  o  k9 q# Y
4 q( i% M0 }* f4 S
to update-credibility-ijl
& i: K: d( r8 o+ K" l' T& F# \; k9 h$ C
;;
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。
, o. V2 N' w- h' t  }0 elet l 0& }5 N( t$ U# p( t/ K
while[ l < people ]
  A- z" w7 c$ Y: c+ 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
! b' d  l+ X/ R: P) o! w[
! t) S! o. _1 O& w. p7 V3 z: ulet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
. U# t! q. Y7 Z, t' K5 e+ g) jif (trade-record-one-j-l-len > 3)$ I' b* v- g  B% \# \
[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$ N% P6 Z. n0 |% _4 d, U8 k8 E0 ]
let i 3. h4 `' y! ?) t$ t5 G: v' K
let sum-time 0
  I- K  V: f9 R# t7 G: b* ^/ G2 ]while[i < trade-record-one-len]
* w0 q  E+ a2 x+ n, z, u5 G3 L, S* t5 ^[
6 j0 u; ^" v0 Y5 q/ h0 _5 l$ ?set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
, C" B9 a8 M! nset i8 t( _* y8 l4 T9 Y! }" `
( i + 1)

0 _  L! K# [+ ?3 e) y: p% S$ q5 ?]* u$ t* a3 l7 ~9 J: ], z! S
let credibility-i-j-l 0
& X, E0 ]# a0 j0 v;;i
评价(jjl的评价)
2 J+ }' ~6 w2 Z, u3 z/ |let j 3
- G+ ]- ^, v" U& v  Blet k 4
, W- z. V' p. I% Cwhile[j < trade-record-one-len]9 q7 j7 p; @3 a/ S% i% J! r% B
[9 g+ B& Q7 i0 L3 \1 [1 Q- Y
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/ ^. J6 |1 R9 L3 B: E+ J
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)' I7 e: P0 O9 s% Z; y$ \
set j
; L) b* U) m6 L2 b  s9 z+ O' z: i( j + 1)

, K, h! O, O: ~]
9 ^) r; u6 e+ V" |( G& ^: aset [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 ))  o) n, g5 Y, v# t/ L
+ M- U  x0 y+ C- k" o0 n$ }

) J6 S( T( N. e* K1 ~let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
+ m" R2 b" H% z" B, n8 b;;
及时更新il的评价质量的评价- B" T: W+ `. m5 z/ K3 _% f
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
- @/ q; ~$ r2 W! ?7 ^  R: o! Vset l (l + 1)* e- c: h' t- m7 u3 f  z
]
) F2 S- b6 I" w1 A5 ^) mend
( p5 |1 S  Z0 B6 |! u0 `0 b; M8 S2 [
to update-credibility-list
0 `* H4 F( D! {; j1 N# q% s' _let i 00 v+ P: ~( q  M3 L. `& C7 r
while[i < people]  T# U* u  V  p& i7 O" ^
[
: ?" s, j! Q9 \* b. \let j 0) m' E* u, C/ Y' I! M
let note 01 W: L8 W- K: b  q
let k 0# t) s( a+ D# Y* ]# a% }$ V
;;
计作出过评价的邻居节点的数目, I; j7 _( v7 P  l3 p
while[j < people]3 V7 |7 J- J2 ?, g
[' Z0 m: E# {( H7 j& Y% S9 N9 j
if (item j( [credibility] of turtle (i + 1)) != -1)- e0 }: Y( {% u. V! _4 Q* A
;;
判断是否给本turtle的评价质量做出过评价的节点; y: E( @) A1 v+ l: c; `; U0 J
[set note (note + item j ([credibility]of turtle (i + 1)))7 H& ]9 j' e$ Z& F
;;*(exp (-(people - 2)))/(people - 2))]

+ S, u/ M$ F+ c; K3 eset k (k + 1)
! {. p2 l& _! x, b; B; f$ \]4 I  p5 o* x. [$ E( \7 f) x9 E
set j (j + 1)+ t( R- ^' B3 n
]
, ]$ R& n. w9 R; C6 Eset note (note *(exp (- (1 / k)))/ k)/ y& ?) w4 F' L! s: r- Z
set credibility-list (replace-item i credibility-list note)
# A. }; N$ u$ \0 s! Pset i (i + 1)
- r; a8 a! k8 [1 b+ A  G1 X, e]
4 z; q5 z+ A5 D# Send/ |; k. w! J" v: [

5 |. l2 M. X. K# s1 P5 b* j- \to update-global-reputation-list3 F) n; L, A+ v7 s( A) M3 c  ?6 t
let j 0: f8 [& s, C, C; G1 {/ z
while[j < people]
: M* b% D1 w5 ~6 ?[
$ q9 P# I- u- {: [8 Z( x+ Vlet new 0$ F3 p' B9 j- z. C9 i6 |
;;
暂存新的一个全局声誉8 P# a1 A( I- B2 N( @" F& s8 @6 z
let i 0
1 {! `- f8 |2 ~% Y& Q8 ]let sum-money 08 T/ [+ h6 g, s' M# W
let credibility-money 0' c4 _* G9 ^" A. ^0 A8 f% L
while [i < people]+ v( }* Y# f* r2 e  F/ r
[2 }7 B  A4 W0 `4 Z" T+ I
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
1 u6 T7 G" [- jset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list)). [# @" |9 L! t* H
set i (i + 1)+ c. X1 {# l' t- p; z
]
/ e- {. L* Q8 o# H  Dlet k 0* j4 z6 d& u0 N( E3 b
let new1 0$ N* m; ~+ d3 g" M# E1 q5 `
while [k < people]
& y3 G( c) g' W" }1 c# h[0 F% @! ^9 m( r% U- s# r
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)
* X1 v1 A: T# W/ Y4 t: T4 S+ f1 Wset k (k + 1)
  _8 m7 w- L6 P# }! z2 a9 N]$ l  B0 e) Q  I( v
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) ; \3 A0 w( P2 T  `: f# ^
set global-reputation-list (replace-item j global-reputation-list new)- j' I9 n& `$ z9 h5 h  W
set j (j + 1). l* a' V3 t8 t) S3 z4 ~
]0 k* E' O) P, n0 a( V. G
end
' ^! ^$ ^- G8 G4 {' I$ @' F
/ c. l! V! Z. x1 [% a' s7 M
0 W* @+ j% l* K$ O& _
1 l) \: I# L" z& jto get-color4 `/ r8 O5 c1 l& z! x
6 P' j6 j- U8 H  r0 ]6 S9 X
set color blue
& H8 S* w2 l$ X1 L+ j) U! L4 a9 m
end( ^$ m5 e8 E& ~# ~* i. _0 Q7 o, t
. p; ?/ Z0 i/ l" n  {
to poll-class
3 ^* k7 D: j. r5 {5 z( e9 Dend% Z" r1 F% o9 @9 g# t

$ O, l0 C. n; ^+ y: l7 a7 ^to setup-plot1
$ ~/ d& Q1 T! e) N5 |  z) h* r& M7 L8 T1 r/ d5 k. Q8 z4 K
set-current-plot "Trends-of-Local-reputation"
" F1 o+ m7 x, x/ G( M; E
9 }2 A6 H6 g4 N# L
set-plot-x-range 0 xmax

" W5 {, y' ]! f, G
2 p  j$ ]4 L# e5 R4 ~set-plot-y-range 0.0 ymax

3 K4 V7 b2 g; c3 n4 Z' Yend
8 Q9 a( x1 H& w( f  I% P
) G2 f* e! z; q) ~4 {to setup-plot2* x' N( o' x: ]1 k

: X& q+ K$ V" s/ U( Cset-current-plot "Trends-of-global-reputation"
( W) W5 Q% ]1 B  r

; ^5 Z5 e, G1 [  Eset-plot-x-range 0 xmax

" O& t% \2 z) w/ D
7 Q" i4 u7 D0 Q. aset-plot-y-range 0.0 ymax
7 ^+ Z' T0 x1 ^6 m2 U
end
1 D( i1 y1 c$ r) C; I) F
  n# T+ ^2 Q$ z, Z* y: `( p: [to setup-plot3
# K3 Z  Q/ I( Y! e$ H
, w. N% [1 T8 i/ X2 R* bset-current-plot "Trends-of-credibility"
/ }3 q; i* G! S3 r" n
6 j4 I$ @/ `, ]4 r- W; I# q8 o/ Z
set-plot-x-range 0 xmax

8 [% F2 b$ P4 G1 k* `; z# f+ e6 {# Y7 G2 H3 D1 ~/ `
set-plot-y-range 0.0 ymax
0 M3 i" d4 }! s+ p. p" B$ f
end
" g& ^* V- A$ }# Y% q0 s" C9 T* w3 E1 x  I% W
to do-plots6 O) ~) D, y: `
set-current-plot "Trends-of-Local-reputation"
' m* \2 n. e' Y7 ^/ V1 F0 i2 xset-current-plot-pen "Honest service"6 @7 p5 X5 s( I/ Y. V
end
7 _- {+ \. E/ L8 q9 t7 {3 S3 ^" F  X/ q% ?
[ 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 U3 x% {6 w  [/ k- [6 p

& T" s! P- F/ v* g( ^* h. x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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