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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) s- m6 W' E. x, E
to do-business
9 H2 }. I5 i6 ]- _3 A7 H rt random 360
2 _! R9 E1 P  F$ c1 N fd 1; b* C/ {- W. O5 X" Z% |4 r
ifelse(other turtles-here != nobody)[# }5 d, b2 e. Y7 V4 }
   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.+ ]  }0 B% k- o  I% J8 d
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ' d- ^4 Q- a9 {5 b  M/ b, s
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer+ i! K9 v) H' _8 y0 W
   set [trade-record-one-len] of self length [trade-record-one] of self$ U2 p: Z' {$ z
   set trade-record-current( list (timer) (random money-upper-limit)). O% W9 |  t9 a. n; |
2 ^3 n( G/ m$ g0 q4 Q& |" X" p
问题的提示如下:# f* D% F8 i6 Q

8 b" L% c5 x( k$ F1 uerror while turtle 50 running OF in procedure DO-BUSINESS( s- Y1 x' j4 h/ m* Q6 o; N/ O
  called by procedure GO& L  F  \# O$ v% s6 V
OF expected input to be a turtle agentset or turtle but got NOBODY instead.  @9 u1 z- B) s' G% `! {' Z( {
(halted running of go)
0 u0 ?# g& j& s% J* U# F( k0 J1 F8 ]2 }  I+ C8 k8 `: z
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~~
/ P% G9 x# n$ r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
( N2 g) v0 z# `; o# R- c$ _globals[
9 Y% q# d, ?/ Q+ h0 u* ~9 g  m6 g) Nxmax
4 b1 _# q+ ~! l" c& q. U3 V  B" \ymax
' ?" @- O% T1 f5 @$ `; _8 |3 ~global-reputation-list
/ [( Y: b/ t! Q" ?: v8 o& T8 V8 n3 G" U1 h* I3 V- W( V! r' H: l' S, V
;;
每一个turtle的全局声誉都存在此LIST
  k' b% h  {+ V9 c* Q3 \4 {" [credibility-list
9 y) U% E$ j+ P, X! g( C# {2 s; c5 h;;
每一个turtle的评价可信度9 ~  A$ \1 |1 l; o% `) A" s
honest-service
1 @; l" q8 }' g* ~: n3 {' G! o, wunhonest-service
) [( j" d  @* voscillation+ O( o. R' G# ^9 e$ K2 g
rand-dynamic% c2 \" P: y& O6 ^. x9 h* B
]7 q2 o- B" }" E. Z) |4 z
" U* j0 q  g2 k, ^* I' o
turtles-own[; ^6 `$ J9 x+ }' P) Z: Y9 m8 ~3 o# T
trade-record-all
0 g" B% O8 X3 G) v8 N;;a list of lists,
trade-record-one组成& X. F. o6 H; Q7 V5 _+ X
trade-record-one+ E* d! b& n: C; 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
1 y; s) \6 e5 L7 \5 u; ~. n. O
. n! L( i4 ^8 |- ^, P4 M, G;;[
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]]- G& ^& @  K3 l
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]
# q2 @+ \" {) {. mcredibility-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list6 ]6 N* n0 |+ [8 _$ H
neighbor-total
4 b+ s# n7 v) L4 G$ _  g, ~! D;;
记录该turtle的邻居节点的数目
2 M! r! x& d  r$ Ntrade-time
! o( J4 Y" J/ Q# T8 B;;
当前发生交易的turtle的交易时间, I' V1 e! k4 z! ~' j
appraise-give
; E$ L9 s2 G0 G6 [;;
当前发生交易时给出的评价
& K8 ^2 V2 |! G8 d# s; i0 k* a: Vappraise-receive" Q, N. `) j  k: L$ ]
;;
当前发生交易时收到的评价8 N- ?& }0 Z/ N" e
appraise-time
2 D1 Y0 X! f: w# ?;;
当前发生交易时的评价时间
  G' S/ `+ \/ ]9 R, i$ blocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
2 t- t$ r7 }4 t% C) X! r2 strade-times-total) _4 m' o% L- B- M) Z4 F6 A! [
;;
与当前turtle的交易总次数& u/ M1 S5 z6 @: D# k
trade-money-total  s: @3 m4 z! k) H1 g6 j
;;
与当前turtle的交易总金额
' `9 `" B  X2 k& A" L. \1 Alocal-reputation& {1 t+ T" J& e% t. j
global-reputation2 n# X( b9 }9 `' z
credibility6 f8 u7 A& {0 \
;;
评价可信度,每次交易后都需要更新
1 @' g9 b3 I% l2 S  o- X9 L; wcredibility-all
# y# c, y5 f8 C;;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
) V+ u" w' E1 ?$ ]1 a; o- {: `$ V4 c! p0 J! h; m- z, o
;;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
1 @0 f& E: I- {) Xcredibility-one9 w& }/ X$ x( S% s, T9 h+ x7 ~
;;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
+ K! W0 O* i, o5 Rglobal-proportion
" l$ w8 u$ f: u3 gcustomer
' N. i: D3 m/ }  h& w. A) ncustomer-no. U1 D4 w5 I4 b! U, \
trust-ok
9 D& V* B4 R  J2 m9 M$ ?4 {4 Ytrade-record-one-len;;trade-record-one的长度
* w* w# _2 Y& A9 C% I]
/ |: N: ]1 x; J  x' Z7 A& c! o/ Y8 |; \# J. z0 o
;;setup procedure- i6 \8 M/ ?1 d5 y& S1 A) n
3 P* H/ K1 A- \2 I8 b
to setup$ {  E' X: P: b8 Y

, v( p5 ~/ d- W& @ca

1 e6 v) y7 w$ ]  x/ [9 s  @0 Q4 z  G3 ]2 f9 k
initialize-settings

9 v; g- W" _2 ?! n6 I
6 e0 C; L$ a4 g( H  s$ Y+ E: W! Xcrt people [setup-turtles]
: R% g" h9 g' k3 t9 B& R
! K9 M9 t( P$ A
reset-timer
. B8 ^/ |6 m2 i7 [  u
2 j: C1 r* M  |0 s* E  y4 e. r
poll-class

9 C5 X: v0 q6 [. R5 |0 E* c2 m/ h& a7 G( Z) [! H
setup-plots
( q5 [% m6 k% H( r- s$ O- d9 u. d- y

% r% v* K" i% m; Xdo-plots
* h- a- [# N. R
end
4 T* E# w" D6 K( y, d$ ~; B" g' X" Y$ o. i6 K; T( ^; t, g
to initialize-settings2 o: P5 I4 P1 d" ]

: |; S) W' a1 [+ s. [set global-reputation-list []

0 G* P! F, _/ [+ e% m6 J
* v2 i9 m; `& C- `' b& Lset credibility-list n-values people [0.5]

1 Y, n: `* x# \+ A6 c0 L. N( @, _0 v' H  L' n4 P* j
set honest-service 0

' J! B) q; V4 B/ c5 B) ?3 U. w% n0 t+ o. B) Y
set unhonest-service 0
. o  E3 u8 ]8 u' l7 _: N" `
$ A9 {5 \5 ?  X
set oscillation 0

/ k- `0 Z$ H; w% ^- J
1 c' ]; @9 d, gset rand-dynamic 0

/ _5 e: Z& A9 Y6 {. `* Iend
5 ?- v8 L; I7 ?+ `& _- {; C3 X# D: N) m2 ?' I
to setup-turtles 8 M" u1 s) w' y7 ]! D- g7 j
set shape "person"
7 i4 _1 m6 ?' i( ^% ysetxy random-xcor random-ycor
, Q7 v9 h, d" p( D" Iset trade-record-one []$ L: V- F$ \, A  S+ @
' }& p9 v8 w2 \, j
set trade-record-all n-values people [(list (? + 1) 0 0)] $ H0 [, b5 {# G2 M
3 ?. o& P. U' T
set trade-record-current []4 _% s: b/ \' p$ P
set credibility-receive []
) J: K! U9 N7 q4 A/ o7 gset local-reputation 0.5( L! l) }3 J$ J8 C: v' g) w/ @' v
set neighbor-total 0
, R( c0 j2 U1 p) x7 E+ ^set trade-times-total 01 a9 e5 g/ x: t" G7 u& s. R
set trade-money-total 0* w# x" b1 `6 W% J' k. C
set customer nobody) u0 H& H2 r! b/ R0 b2 m+ }. F
set credibility-all n-values people [creat-credibility]9 H. Y. z6 t  i8 I* }7 }
set credibility n-values people [-1]
+ y& V3 |" ?: Kget-color* \# U" B/ X/ e+ N! e/ ^5 v
1 ^6 N+ [$ R' H, P" P- ^# t
end. r* A5 Z! r+ p$ f
/ D/ I# X+ y% m% [1 g/ c; K- e+ K
to-report creat-credibility
* R% f- w* b, j. Z: o- Lreport n-values people [0.5]" I# Q/ X" v3 @9 s! w1 \: R
end( v& s4 }9 C- `) l& m

9 x! v) e% ?3 W& o) Zto setup-plots
* g6 t1 m5 x  B0 r- M/ x, w2 |( u8 L
2 H1 o% a& |7 r1 W. Iset xmax 30

5 a( f# M( b$ B" b
3 [6 r; m3 O( k. s# a* V. Eset ymax 1.0

; M+ t; C! |* X1 {+ L- L/ A: f# ]* O+ p
clear-all-plots

/ s- k8 {6 s) _' Q2 V$ q7 R8 a
1 l% K4 b0 _: z, u, w1 k* Asetup-plot1

9 p* y7 r3 T, d% O' X
; p/ E. `8 _' f4 b* D" s. psetup-plot2

: S( D$ m1 w) F9 P$ N
0 j- }$ h" P0 Psetup-plot3
. ?# f( K2 {& F+ q9 g
end7 v5 j8 z1 C- K  x5 f9 R1 D9 ^

" T: g! j9 D) X+ S6 u0 E5 a5 D6 r;;run time procedures
# K0 x: Q& M& D9 [: d! V
! J6 q3 o& T/ U  ?to go
- T+ x. {  m6 ^# @, W1 ]& x0 O" _- h6 t- ]' J( ~
ask turtles [do-business]

+ C0 F0 _; A; U) H" ^end
4 J# s  [* L* |$ l
+ K) }& ~# P2 h) B6 b6 p* B* sto do-business + R* F" K. b0 H6 `/ E4 V: j
! _7 ^/ [  g9 P/ {, f' h  w
7 i: w3 H) @& `7 ~
rt random 360

2 Y. {1 F/ S: ^: V0 h; S6 N: h. ?# X, a/ l; L5 p/ R7 @' w- `
fd 1

" [; ]- `6 i. u# ?  b* i) @9 j, g) I" W
ifelse(other turtles-here != nobody)[
  b, p) K5 v( H6 Y2 p6 H+ R$ B5 Z
7 W3 \! _) K6 M7 ^2 h
set customer one-of other turtles-here

2 S+ M  c/ y9 j. n" g! I0 ?( |, J/ |+ O2 O
;; set [customer] of customer myself

8 G+ S, Y; j, Q/ Y& O% [! g
& [2 _1 \  _* gset [trade-record-one] of self item (([who] of customer) - 1)
* g5 \6 G8 U; S' A3 \7 u  u[trade-record-all]of self
1 Y7 a' G5 M2 U* l;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
/ l) K+ f% ?$ a0 x

7 Q( A* g0 h0 h/ W/ z0 C% X% Vset [trade-record-one] of customer item (([who] of self) - 1)
$ F+ i8 C" z7 q/ l4 b: K[trade-record-all]of customer
. Q' l  z3 a) ?- s$ q

1 S2 E' v1 h0 ~1 qset [trade-record-one-len] of self length [trade-record-one] of self
; a; z/ v. m7 c! ?9 C
& f, x9 q! F$ V, E: U
set trade-record-current( list (timer) (random money-upper-limit))
8 v  g; n! B1 G2 I0 G1 s5 |
; H% Q9 G1 s8 d. F& j9 i( V
ask self [do-trust]
+ b5 `+ u0 _' g7 Y5 i/ w;;
先求ij的信任度
0 M3 O8 P; \: F& Y0 R" }! j; e- S" S4 |' U/ g# f* ~; I: h
if ([trust-ok] of self)
" n1 d) p; |1 H* c;;
根据ij的信任度来决定是否与j进行交易[
) [9 d8 v( S0 L! }# v9 N% [4 y( h4 Fask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
) S0 N, C4 g' ]/ c! J; k) I# d+ V, ~/ Y( v) j; n' y* D$ C8 U) s0 Q
[

0 @9 E. b! v# ]8 b& c& W/ N2 L# x% M
& k. @7 M% y( ]% j, H  Odo-trade

# Y2 u+ J- }& t1 e% d% U6 w, T1 }1 ?2 ]6 C: g, P9 ]  z' j
update-credibility-ijl
8 ~$ O+ Y& L! K6 \; i$ O
- z" R! I/ _5 E0 r, R2 B
update-credibility-list
, h$ q. }5 n. r0 e9 o

- b0 U+ l% ]1 @  c6 v9 R8 y2 c0 D* c8 r  ^
update-global-reputation-list

; U5 w: \4 ~' H, W  _; t, h, E& y. P3 x8 R) V: v8 V* Z
poll-class
9 D7 L4 U9 f- X9 v' Q- N  f

9 c! [* ]% Z5 ]& p+ v8 y) O1 Xget-color
( r7 f- P$ R9 V( E/ a$ u8 |

6 s- u- B! q1 F- S]]
  ]7 W7 M0 i3 A. ^3 [
  _; G! |) ^1 X0 P  M;;
如果所得的信任度满足条件,则进行交易# O3 w  w) Y: ]# Q7 X
5 h# \0 ?' v! V7 y
[

8 _2 o5 q' y( }% ~' a# u) S8 P
rt random 360
, q/ i4 G, j( {
# z6 M; [+ ~4 @, P* A0 ^
fd 1

+ J; d+ j5 }- [+ K" p# n; f
. M7 @" b1 c' p" p]

) m# b9 w8 q- _3 k( P3 p5 m8 D
$ M) d( @4 M! V* X' d. Mend

6 X8 C5 H; v, d5 r& O# d( p- w# @: @: V, ^8 f/ h  v4 g( \7 Y
to do-trust
, m" q2 X! b6 v1 @" ^# z0 ~$ w8 h9 U4 |set trust-ok False
" z+ m$ H* M4 Z; B! z
4 N& o& y$ l$ P* j; x( S5 ~1 J: ~

0 C" x% [/ N3 Qlet max-trade-times 0
( f( g  B/ _2 \, B1 aforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
7 v# v0 z7 G8 o7 Ylet max-trade-money 0
1 ?2 J. f8 ?- {) T* l- Oforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
: F' A6 Q( T0 |+ `let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))9 y  b$ l3 i" T" K5 W- l& z9 x7 g/ L
" X! }/ \& J% c
4 w1 O* p% z$ X( \/ a
get-global-proportion8 _* V5 v1 C+ _4 }6 Y; c. u
let trust-value% ]- |: Z% i$ M
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)

$ E: m& l' y7 B/ l# fif(trust-value > trade-trust-value)
0 _' N; h/ |$ E. y& H1 W3 L[set trust-ok true]
. H2 O8 p! F( v2 }1 U/ o6 h; Gend. V' r9 T- Q/ J0 p8 d% \

9 \- R9 L# d9 X) x9 h5 o# ~$ gto get-global-proportion# R4 K# S, R9 i% @) @2 p4 x/ T6 l# j
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)" m6 y5 ?3 I  _- R3 [/ N
[set global-proportion 0]
7 m! G: O/ M0 i[let i 06 x% k3 e/ `* ~" o, p
let sum-money 0
$ c: K4 C7 \: p0 m- r/ ^- h' c+ R& Vwhile[ i < people]
9 \+ E) m: M) Y, k/ E' d( I[
) j2 E* ^8 g  o  r  Wif( length (item i5 p* `- @/ \4 g
[trade-record-all] of customer) > 3 )

3 z& g* i! S  K- p# Y: q4 s6 W[
, T* H' J0 |  u* L7 n) q( v4 ]& wset sum-money (sum-money + item 2(item i [trade-record-all] of myself)), |3 Y, r( u' }  B( K9 h0 M; B
]
% c1 o2 P. |2 ~]
9 O8 n2 q( ]3 }, r# @let j 0( e" Q* v8 u7 Y, {0 O
let note 0, C2 U  x$ w: q7 d
while[ j < people], v0 \! q" ~5 s0 n8 K
[) L# o$ E, M$ `( H# \) a% B
if( length (item i: a7 g7 H4 g6 T+ T
[trade-record-all] of customer) > 3 )
0 \, {$ }$ |% I
[+ @3 Q7 ]( n4 Y) a8 Q
ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1), Q; K& G1 _+ b1 s
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]& t. m" }) A, f. p# p2 q- s
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]  v0 s1 ]* r7 u8 y. L% L& z5 X
]
% t4 ]6 Y9 |# E- p2 G]
5 |6 m. p1 {( Q' j; E- J2 \set global-proportion note. f; r9 X! k4 k2 q
]6 }$ }* R* @6 T3 u9 G- B7 b/ X
end
& C* b2 T& P1 u! r7 P' i
4 J" U8 s$ s; Y8 _2 M0 `to do-trade
; o$ ?! l* p& G; Q' }' h0 o;;
这个过程实际上是给双方作出评价的过程( q. a9 N9 L1 a
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
. |+ P+ f3 e2 Eset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价2 G, v$ p) s- ^' a
set trade-record-current lput(timer) trade-record-current  E4 Y+ ~1 P6 ~9 t9 T
;;
评价时间5 D. q+ l6 C, {5 O+ O2 N: A
ask myself [( C. l! P( M/ ~2 l
update-local-reputation
5 ?/ w/ B5 C5 X7 v1 V! @+ ^3 Bset trade-record-current lput([local-reputation] of myself) trade-record-current
7 w& \, O& ]! ]( M5 `1 h$ q]- j7 H3 o/ l1 |) O! ~. Z
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself# b: L+ Q3 o- ]% L  G
;;
将此次交易的记录加入到trade-record-one5 W8 u- u2 d, H; w+ ?4 C% ]( l
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself). I6 f5 ?# z0 g0 h) o. H! _
let note (item 2 trade-record-current )' N' G  L, S) b
set trade-record-current7 ?. [0 v6 M5 Y+ w% [0 E2 S
(replace-item 2 trade-record-current (item 3 trade-record-current))
# g% X- R% m' ?, M4 u. A& s
set trade-record-current
: y8 [0 v' N- z2 [% I1 f+ E(replace-item 3 trade-record-current note)  ]  F$ C: t+ h* q
, s$ r; H% f, `! ~, E/ V! ^" I

) [; O  t6 u# [$ Nask customer [
" [. r1 a# Q9 H  Y0 i# qupdate-local-reputation
- t9 V6 Q5 @7 @( p, k1 u' rset trade-record-current
; a* H, l( t0 E" L2 n# E(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

, r+ x9 O- u8 J" Q6 w2 b( ]2 K], G' P* N1 A% o1 r2 y% K* w
8 F3 D& v1 |8 e

! ]3 c7 e; u9 P) I: Xset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer* e# n" g7 ~  z4 j0 T- ~+ W5 K
- R; ?. s8 Z# n/ q
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))0 ^8 ?1 B' ?8 y. y, Y
;;
将此次交易的记录加入到customertrade-record-all
4 L( [8 w/ a4 O/ yend
5 k4 [8 \; C' I  _/ H! U& L
* ]* G( f+ G6 b3 j* ~5 S1 ]to update-local-reputation
' e' h7 y" s. c' D/ Z. A! l( {: Oset [trade-record-one-len] of myself length [trade-record-one] of myself2 o) v  f; |2 f0 U# u

+ U. q& d" A$ r+ ~  k1 T6 Z; J1 H' l6 p/ q) l! l2 h# k* b
;;if [trade-record-one-len] of myself > 3
6 U/ l% y* _3 J9 n
update-neighbor-total1 b! C$ T/ f0 L! Z4 l4 f: J
;;
更新邻居节点的数目,在此进行+ U; @: _* T7 u& ~4 @7 S" W8 Y7 f, ]
let i 36 O/ o7 @% S1 t, G4 J1 B
let sum-time 0. k8 ]# L6 R4 P
while[i < [trade-record-one-len] of myself]
+ n. I; p7 u9 Y/ m8 m[
1 V7 q- T2 }5 s6 q2 H& Sset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
; w2 @* }# s6 U$ M3 E3 m! Eset i; l2 l# s$ T8 q( M& S- \* H! m& h
( i + 1)
8 k8 u  c/ }4 u; z0 [/ L
]
1 T+ L% `0 T8 E( M0 Qlet j 38 r0 ?' z- G" e, z
let sum-money 0
% {+ S( l0 ~$ b& vwhile[j < [trade-record-one-len] of myself]
" B/ Z' D, L' P[0 i& _4 `* N7 k: W
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)/ `6 X" s% i! V: x+ U
set j
; {. Q: {. j% Z1 \- v# V* u  I' C8 {( j + 1)
0 }& P' V/ R7 j6 M% E1 {
]  x; j( n1 \% w" M2 ?8 X& C0 n
let k 3
, P1 j) E1 O2 R4 flet power 0! H8 i8 D7 U$ k; s
let local 0
- N! z  x# C; ~4 awhile [k <[trade-record-one-len] of myself]
3 i8 D' C/ Q' j% G[  y) X8 [. k# Y$ ]3 }
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)
' S. I1 I9 B: ^+ |set k (k + 1)
' l. ^  ]% W. u$ k]) E. f2 z( O* a& K# Q
set [local-reputation] of myself (local)
( J- o) Z1 I' aend
) O+ |" G! n- L. s- I+ Y* s4 z* H. Z- \* i: M- ^
to update-neighbor-total
* C- [( S4 m: R9 e9 Z1 W$ R/ [3 ^
2 c0 Q) C- H) y: ]9 {# r: }if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
( n- P; }9 E2 y- O5 s9 ~1 n& Q. ~% P: B. I, f/ H

6 I" t/ d! B* c: Xend
: Y" |: U3 K1 `& v2 B$ L+ `6 L, M/ y( M. N( L8 b% @& I& ]
to update-credibility-ijl
- p; R3 o" a1 V1 E8 @* J1 h; G$ Q0 c5 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。3 J4 u6 b7 F7 m: E8 c' Q2 h
let l 0# y) ~$ D8 q6 W( m7 @
while[ l < people ]4 g5 S7 Q+ N% x) b) V) F! N
;;
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; O. [8 T, E& r+ K
[
, W  |$ W5 D3 O  U1 W( L7 Glet trade-record-one-j-l-len length item l ([trade-record-all] of customer)2 R; }+ B: ~; L6 C
if (trade-record-one-j-l-len > 3)# B0 L8 A" |& E6 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
1 P% q1 _& }+ l. b" Z9 olet i 3
% Q2 x7 c6 x6 l! c9 Y1 wlet sum-time 0
$ R" x; y# V/ V: x# o: V# Q. Cwhile[i < trade-record-one-len]' Q. ~1 `) v: e- d8 B
[( F( y! x" R+ b' \5 P6 K* V
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
# ^- d5 O6 ]" \* e3 ?, b! sset i
5 F4 G. W* j' l4 J. E4 x1 M( i + 1)

/ h( _# v6 b, {2 s' [+ ?]  g6 ~) O' S# S; Y& c
let credibility-i-j-l 0
' H; S: T8 g, U1 C;;i
评价(jjl的评价)8 E% L$ E7 A* Q' A5 F) P6 N
let j 3: D) n/ S) s$ P5 b8 F. j! @: ]
let k 4, a5 ]0 M2 G- g+ W% w% q7 m& [
while[j < trade-record-one-len]
% s# n* [7 Q! U/ g. D[
$ j, v  f0 ^; V( Swhile [((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
4 F4 D: q2 M0 x) ?& `set credibility-i-j-l ( credibility-i-j-l + (item 4(item j [trade-record-one] of myself)) * (1 - abs ((item 3(item j [trade-record-one] of myself)) - item 5 (item k trade-record-one-j-l) ) )/ sum-time)* u9 W. M' d! I* G1 c
set j( a4 ~# _' j/ r; T- {6 O$ Z, G
( j + 1)

/ {: `0 K% y% ]1 |) ]2 {# D6 h]
4 B' h( h/ o) y/ W6 E$ 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 ))4 `& Y2 {* L5 b& k

, W% ^- N/ Y0 d& o. `& j$ R6 B
5 o: N  c! O: T
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))4 w9 ~, ]- @! Z6 G) c6 Z! E
;;
及时更新il的评价质量的评价
3 S  S" T" _& X7 |. o+ `set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
! I$ m4 v- C4 e. X( q2 Cset l (l + 1)' e2 I# {# i7 H! ~
]- L- i# @  `9 L1 S
end
' u- y# Y2 B% x( N/ @. Y0 C2 i7 O! n* H. ]4 s- A3 c5 @
to update-credibility-list
- {4 f& \2 }5 f* c9 |3 o. P* Klet i 0
: ?, ?0 t( B9 a5 e2 }, Pwhile[i < people]$ u+ ^9 J, R, u) J" e
[
/ d3 w7 D8 C. |# H) D: Y. q& \let j 0
+ a7 o% B+ B5 e/ o% J. p. Clet note 00 H9 `/ Z# T7 G* v: f
let k 00 s. d% ~. j: A; r: U
;;
计作出过评价的邻居节点的数目, b5 [( f$ h" o) p
while[j < people]0 W. P( ?+ K# ^7 g* v8 M
[
- j2 t, f6 Q2 oif (item j( [credibility] of turtle (i + 1)) != -1)7 A: |+ }+ t) }& J' _" c# l
;;
判断是否给本turtle的评价质量做出过评价的节点
5 I" @+ W( T7 E6 H  A( I[set note (note + item j ([credibility]of turtle (i + 1)))
- ?, y* B& e6 O- Z3 M# H;;*(exp (-(people - 2)))/(people - 2))]
$ f* {! D2 ]5 X/ y+ _' H3 v
set k (k + 1)
' p" v) b/ Z% ?( a]5 \3 ^' n4 }! R# T/ P
set j (j + 1)
* D2 P8 K  Y9 U( Z]
1 z- v) e3 Y3 x' ]set note (note *(exp (- (1 / k)))/ k)
0 n0 q; _2 o& B4 B) jset credibility-list (replace-item i credibility-list note)
* C4 d2 l1 W: n" Lset i (i + 1)
& C2 O9 M7 o- K]7 |6 p" }( x, d( J# M. \- U# u
end
' q0 s) W3 J4 y+ ]: }
# ^  O1 p( S+ i* ~' L4 w$ ito update-global-reputation-list
' j9 z+ t: x( g+ zlet j 0) h. Y$ s1 {- T& c/ p2 R3 U
while[j < people]. q$ q1 W: x" v8 h% p; p
[: G/ t9 ?. l! X- I4 a+ ]/ m
let new 0
/ o" ?& M" @7 r: i2 H) ^4 T' L5 X;;
暂存新的一个全局声誉' D' V1 u- z8 m, D4 u
let i 0
4 U* b, \2 z3 X! mlet sum-money 0
' X( C/ B+ |; e: h& G% E- j: Glet credibility-money 0
# O" G) @, _8 |5 x. y* u; Cwhile [i < people]
2 L$ J- d% r0 ~; Z4 m% g[8 y& Q0 D& G, V. k6 r
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
; r4 }5 I6 o' u0 r" A9 \1 V9 lset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))5 Y6 r2 K3 |; v
set i (i + 1)  V$ X3 c; {2 s9 N$ m
]* m+ g2 u6 R9 }3 z" o9 F
let k 00 c1 r3 R, c8 h1 q! i1 @7 `* Z& {
let new1 0
9 L/ _4 T) j6 f/ _3 @1 i% _4 _6 e6 d" {while [k < people]
2 t6 M& s% u+ k8 a* D[# Z4 C; b" p" c4 b; f
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)4 b6 F6 y3 R/ Y6 ^+ ~2 P
set k (k + 1)
$ r+ q6 L. q: `]
( @% E& q& [0 W# Z/ }! d5 c6 oset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) $ p, ?# J0 S2 q- s
set global-reputation-list (replace-item j global-reputation-list new)( j) ^6 f+ e2 |) U
set j (j + 1)
3 L9 J: d& d5 a' L3 h' x]: Z7 Z- r$ g" j3 W: m0 ]5 m
end( t9 U" ?8 }' N( @' P
7 K7 ~% p. V' P" u
. [/ {3 X' t6 d- q1 V# }8 h  O

% E/ L0 c* ~' C5 L- Ito get-color
7 q: P* n% `  ^6 O' h: @
+ B' K4 w  L) {; p6 tset color blue

0 t) E/ D% i1 q+ a2 [# r; F* G. Nend6 z9 V7 v, w3 ]9 h
7 Z$ P8 `0 {/ }2 l% s( H
to poll-class
' J1 u  z2 F: ?' K4 O: dend
+ ]$ X& l' T. d9 e+ Q7 D$ F3 l; c. x7 @1 J8 H
to setup-plot17 [7 H  n( k3 z, C+ e
( }7 [& C! ^" T$ ?; h
set-current-plot "Trends-of-Local-reputation"

4 J8 C! q- R) L3 f! C3 u9 ~7 L9 B
2 m2 b, `2 V" y/ f4 f! B& M( Hset-plot-x-range 0 xmax

& J' x4 Z3 D: K" ~3 W
, B) r, k9 _# W5 I4 C: [6 eset-plot-y-range 0.0 ymax

6 ]: g. E$ H6 u9 A; S2 p7 fend& [" c6 z; L2 Z: z

: @! y' W/ O. ^' n# Eto setup-plot2' i0 Z+ B3 _* k2 m

$ C. x4 }2 D6 V3 [# yset-current-plot "Trends-of-global-reputation"

, S' v4 e8 T8 Q9 J# _; F! T. P) O. A" R- a# j2 P" x- s
set-plot-x-range 0 xmax

4 g8 @3 m2 [) H! O6 y
) P5 Q1 _& T( l3 ?' Yset-plot-y-range 0.0 ymax

1 G1 ?$ S0 _1 U# n& w4 y# z( r, I' z2 kend
% g, J. V& X" t) t4 {
2 q9 b% L2 \3 |1 s% s! R+ f0 L2 lto setup-plot3, V- [. z3 Z1 D7 ^& C
' x" F) Q' g* }) {# Y& j9 r
set-current-plot "Trends-of-credibility"
7 f5 h: p7 _! P1 y

( X7 {2 u6 s$ X" b0 M' Uset-plot-x-range 0 xmax

/ `9 b! p  X( g* D# M; \+ ^( K0 c9 c; u3 P" d, s
set-plot-y-range 0.0 ymax

/ O9 G: w% a2 q. j9 d2 Send3 K; I. z: W2 o2 Q' ?3 r5 S
! P6 N4 e! |/ u/ [, E2 V1 Y
to do-plots% Q- x! m/ c7 o4 S0 Z! K$ g
set-current-plot "Trends-of-Local-reputation"2 F) i- E  [& n2 s
set-current-plot-pen "Honest service"
: u( ^- [/ r5 s/ V) R: T* t$ iend
8 s. }2 |+ D  ^/ R5 ?; x; k
/ l( j5 _$ [4 I; g7 O' F3 F8 X[ 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.
; L% ^" x* X/ N2 v6 m2 O9 P; ^# o1 \  ?6 x: b0 ?
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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