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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" N2 r& m2 {: ato do-business
. n% T5 [4 n4 M3 H rt random 360
) J& V( \6 v* f* s' r fd 17 c9 `9 l( `0 H2 @! X4 X; m% @
ifelse(other turtles-here != nobody)[  _" B8 j0 U. A3 ~  D0 X
   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 c1 `( w# n* K) u
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    ! q6 C) H" j9 b# I
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
  f; I6 b: |- w# g1 Q   set [trade-record-one-len] of self length [trade-record-one] of self$ x2 T. ^! s/ \$ f, i* C  z0 B; s
   set trade-record-current( list (timer) (random money-upper-limit))8 ]5 z# b& `) n- D6 |7 L
. l7 _' d+ r; f5 X- v& y
问题的提示如下:4 E1 h: @3 m6 k! o5 Z
; r4 a  D$ `# H. b
error while turtle 50 running OF in procedure DO-BUSINESS
: h9 ]( H; y; y' O3 v/ c6 E  called by procedure GO
/ r: f" V9 T) @OF expected input to be a turtle agentset or turtle but got NOBODY instead.' D/ }% E" S% G1 Z
(halted running of go), N$ [  T1 ^  @& A/ Y! E. y

( q/ Z$ h3 {/ L' W: }# U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~~
  ^+ ]' q, ^; [6 S- M2 Y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
4 D& {; Y$ Q0 S* Y# x3 ~% j! t! Pglobals[4 S' R) B( z* C2 }
xmax$ n( k$ S4 e2 J- W5 Y
ymax, O2 Z/ u* I6 a0 h, m; v
global-reputation-list
, E6 Z+ X& [2 o4 M# ]3 z6 r/ X) ~/ ~! i1 o2 f; J
;;
每一个turtle的全局声誉都存在此LIST* R) h% e/ U' m; Q
credibility-list% E' M9 T8 L+ H# J5 k% r
;;
每一个turtle的评价可信度
/ k3 F" o: `$ F/ h9 p' n: fhonest-service7 H; H: }# Q8 [$ ]% Y+ \
unhonest-service( j" T1 K9 A3 c
oscillation
# g/ v8 N8 a+ c) @rand-dynamic# W; e0 `. P! L* ]/ |* F3 @
]: B" K+ \# I2 M; n
% r2 |9 G; \& n( f; f8 n( ?
turtles-own[8 r# R1 P; {( R
trade-record-all' s1 L& L* E. Z' m% _; r
;;a list of lists,
trade-record-one组成/ q8 n' _$ `( J
trade-record-one' e% J) p' J! A9 ?: `2 y
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
( F! m8 j: n* m  }) u6 N" {2 [$ ^& J, 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]]2 V) M, ^; Y; w$ m1 P8 h: g- y
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]& v1 @1 {! S% h4 d/ `9 v) N% ?0 D
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
- i* a5 V3 l7 b8 D! z- c! R: {neighbor-total& @' G% w* S$ F  E
;;
记录该turtle的邻居节点的数目' W- v5 {/ O1 E! }1 h. g0 u. y0 W( h
trade-time
8 l% {. s: k  q, F/ \+ t;;
当前发生交易的turtle的交易时间
$ Y2 m7 C& X* [6 F/ Lappraise-give7 a  v! P1 q  ]' j
;;
当前发生交易时给出的评价
9 [8 r/ g* p1 w. S, v8 cappraise-receive' k$ K( n* m6 O0 ~; B0 \4 N
;;
当前发生交易时收到的评价" w$ s" C2 j- o* h0 h
appraise-time
( n4 j' V: H7 O( _0 l  F7 b2 [;;
当前发生交易时的评价时间  N; O0 o# e: _! @4 Q# O9 u
local-reputation-now;;此次交易后相对于对方turtle的局部声誉$ i' A2 C" g! `5 a* U( F! H
trade-times-total, `+ e% d( h. s( M' Q7 _
;;
与当前turtle的交易总次数1 e! f- u) @7 J8 a9 \/ [
trade-money-total
/ m4 D5 g$ S! A! p' i;;
与当前turtle的交易总金额
; b3 T+ Y6 K1 p' Flocal-reputation
  Y2 p* t/ o: G2 \global-reputation
$ h! Y1 n( ]1 u- H4 a6 e* ocredibility
9 [! g: {; H9 }- _;;
评价可信度,每次交易后都需要更新
7 N6 q& z; A* S2 y( v2 p4 Dcredibility-all) z* K9 t1 Z0 E" M( z" [" g
;;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 n5 r; R! h* C
# {/ l) F6 |/ `% t! 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
5 K2 Y( o& N2 r, ?1 V' e: ccredibility-one
8 {' @, A; O# d8 e( G0 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people+ M. C  d% E6 s/ S6 G$ ?
global-proportion
2 O& h3 e% H( p0 scustomer1 t3 P! l4 k7 s* q2 y' }
customer-no% Z$ ^+ O3 K9 {" J
trust-ok
# E- c( H( F6 i2 `- ^1 ftrade-record-one-len;;trade-record-one的长度; o1 X: P" S8 S" m- R5 N$ S$ ]
]
+ F- B$ q7 i0 y5 S9 w' [" q5 z3 _6 s9 U, O2 H2 s* B+ ^
;;setup procedure* V% D; j: d" r- P

; U' o0 s6 P4 A9 J" Ato setup
+ }1 v$ V. C) W* v7 H" A0 A' B0 {* A- p3 B
ca

% ^) I1 u0 N2 m% Q8 C( {/ K( C1 {3 K- t- G; ?! Y. r" l$ s# P
initialize-settings
$ l4 a9 T% C2 P3 w; C9 H
  x1 ]% L" S* S  R! H
crt people [setup-turtles]
! o+ K: v3 H) q

# o7 g' t( `3 n! dreset-timer
; n6 M1 |6 b9 J0 G4 h: h) C) p

* c  `2 E5 e  H5 s2 ]poll-class

! G+ ?+ |" C( K. ^+ w, w& O
4 h" e, N2 ~2 e6 m% {setup-plots
" N6 H& c: t1 n  C( t

8 [" y2 {3 T& v; _9 Hdo-plots

/ }  x/ N  v0 w" ^% Pend
, A* m) U* O+ h) W' c: |3 A. z! L9 B& h. l( }. C, p
to initialize-settings: A3 N& L8 p7 y: n: S

% ?' V, F' i1 y+ M# e5 ]4 Jset global-reputation-list []

1 O" X5 a# t/ i" h6 ]! L- v2 G
* O* K( E* r" {# H: d- c- Cset credibility-list n-values people [0.5]
9 U- L, z; F( R0 T  U9 L, G6 K
" k* i/ v% X5 k0 N+ J7 p8 X
set honest-service 0
; B7 @/ O# A5 E2 v% {
- Q6 N+ x. s( ~0 b  O- {9 Y
set unhonest-service 0

( U! D& v, m3 c+ P+ T
" J2 N8 s/ r4 g  U: vset oscillation 0
9 _2 K' X4 M4 D  ~

& Q/ n! `0 R: e$ W, Sset rand-dynamic 0
$ A2 |  \1 G6 t5 A5 u/ R
end- d- E) i3 z" }9 o7 y; ?3 @
# {5 J! t7 ?7 v9 B7 {) X9 `
to setup-turtles
5 w* d1 y# A$ j5 Fset shape "person"- c& S' L4 W; N2 _
setxy random-xcor random-ycor  Y' X% O% T: }) q. i; n8 }! t
set trade-record-one []
8 f3 R: R2 r4 ]; q: ?% A
' j; E4 p5 B' B- n+ F6 k9 ~$ u7 |/ f
set trade-record-all n-values people [(list (? + 1) 0 0)] : o9 N) O; c) X) ~% b1 x6 r

/ O$ N! W2 W# d$ a) ?2 h+ [, kset trade-record-current []0 ^1 n5 A2 i2 t7 A  q1 A% b
set credibility-receive []0 _+ y! I0 s- z. ^' h7 A' y8 ~2 C
set local-reputation 0.5  w! w; m* @" j0 d" G
set neighbor-total 0
' S$ T0 I; {; O4 }set trade-times-total 0) W8 N! R# s8 S9 ?
set trade-money-total 0
# a  ]: g+ {7 @/ }$ A4 bset customer nobody) T! r$ [% c. N' M2 Z- ]4 \
set credibility-all n-values people [creat-credibility]
9 ]  k" d& j2 xset credibility n-values people [-1]5 l) z$ ~6 j' L8 h
get-color. Z- N. i: n1 k- U
+ ~$ q, [4 D4 S( W/ N5 c
end
8 G0 B* `/ n- r5 M' N; m, D( E1 T- F9 |
to-report creat-credibility
  d* t* b) Q$ [) u. L7 V. i! |report n-values people [0.5]/ o1 U- L, \$ I' |$ O8 E3 a: j
end' l* w) W+ V" s

/ H. z4 f, ?- Y0 K7 Jto setup-plots
( i9 Q. c3 r0 v8 E1 R. f1 [& i5 n9 m8 K/ C( j. a( m
set xmax 30

( G: F' z& G/ p* m# `% @4 X: D1 R$ p& ^
set ymax 1.0
, y1 @  P6 D! F

$ E3 c1 }/ L+ c! l; w6 {: Wclear-all-plots

8 L2 p+ L9 g8 E' p( C( D) Y+ |; [7 o. \+ Y/ a
setup-plot1

$ N2 O* C; |* a" l7 G* R( p8 B, O' s& D
setup-plot2
' U3 z0 e0 ]7 c, A% R
$ G. R9 S+ E7 `' H8 ?. ^
setup-plot3

  L: ^5 x5 C! ^) n; d! V' g" mend( U3 ?1 a; s4 s* g0 w/ T) G4 a) |
8 K' K0 ~. R( e7 o
;;run time procedures- [( ~0 q6 }: U8 D, R
2 u. m( S, b9 n' ^- V7 l4 n! j( E
to go
9 [; y! R* F- [
" j8 T- N. s+ o3 m& |, b1 }ask turtles [do-business]
' t1 Z& m. {9 ~
end) ]  m7 T6 o6 b0 E; e$ D
3 J4 D. i+ n. C& k% G
to do-business * I" }' j" Q5 H3 X& f' D
# Z7 M) A" G" t& m+ n3 {
+ Z3 c) H" ?/ s. b, j! O4 \  F
rt random 360
, R  D/ n8 Q* i! d- S
* ?" s% a; q  ?& m" I- A% r3 S
fd 1
) }  o$ X  Z& Q; n0 Y
% Z6 M; g# O0 U
ifelse(other turtles-here != nobody)[
" S) |  _/ o8 a3 I% c
" {  E. @, O& P$ D/ d
set customer one-of other turtles-here

5 @6 [( H' }$ U4 n/ m. l* E- r$ x$ |
;; set [customer] of customer myself
. s/ O0 I3 G, w. `( r: b
5 \# b7 L4 ]0 ]7 e
set [trade-record-one] of self item (([who] of customer) - 1)9 P/ _  v" q& [$ N; h
[trade-record-all]of self
$ x' M2 g! I* |;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
4 @/ R+ A# Z# Z$ S" e- R0 w! v
* H& b% q# Z! \8 \* W' k9 C8 v! a
set [trade-record-one] of customer item (([who] of self) - 1)
7 @$ O" l& T& ^) L9 k1 S# V6 e[trade-record-all]of customer
/ `3 J" A* A; R# h/ J

* v! S3 u1 f& \, ^- }set [trade-record-one-len] of self length [trade-record-one] of self

' k4 I8 k' V0 _9 }' u6 T9 v% X  B9 G8 ^0 I. r9 D
set trade-record-current( list (timer) (random money-upper-limit))

/ n/ R5 M+ Q# m  ~7 T, Y
9 o* @$ e5 [9 D, _ask self [do-trust]& \1 u2 Z0 C" h3 E6 o2 Z& D
;;
先求ij的信任度
" P0 r0 }: a! z3 W$ W" `3 |, n+ N8 S; F
if ([trust-ok] of self). o- l+ j( H$ r- @9 O/ s
;;
根据ij的信任度来决定是否与j进行交易[
0 _: \7 x0 h! d0 k# Hask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
* i. X( A) _2 d9 N1 g9 y# I# i. j6 ?& M) o
[

5 S$ y6 {! [' Z  @# ~; f6 E! D. I9 f/ f* Z$ K
do-trade
, u+ d0 O8 W; G& G( q

* K: v$ L% a  I& m' Zupdate-credibility-ijl
! H& f: ]. W3 \. l+ M" n# I
& s0 L7 o3 k7 G  \3 r0 a' ~
update-credibility-list
% H' H0 f0 B! s% V

3 Z4 d* Y/ k; x% M5 X0 b. N) F6 Q( j3 A6 d- b4 Y
update-global-reputation-list
/ X4 r4 X( r# M, S
; K) f$ }" P, A/ r) \2 v" {
poll-class

) P1 T( {4 N$ t! f- Z4 |& M( U% ]: B6 N$ K' ?
get-color

$ [. [6 g5 P9 T2 W6 Z
) z9 X% ~  A9 N- f]]! F. G5 n3 ^" x4 Q4 V$ Z$ T
3 t+ p6 D+ G9 z' C; X: a  ?4 f$ P
;;
如果所得的信任度满足条件,则进行交易
( z0 I/ W) d& f
' n. {3 X* S; k[
" d3 }- ~5 X; E% F8 X9 Z

6 o8 g, `5 P( V0 Y6 |( K6 brt random 360

1 h0 i7 s, L# I* ^$ m0 g+ Y2 a' ]. S  ^, c/ U, O; L3 N# D
fd 1

/ T3 F2 W  v- \- m6 y( Y* p7 W6 c5 m% V. V5 M5 ^" |" w: {
]
2 o0 }% c, s8 ~  Y. g5 `$ I3 k5 i
" P' h( L! B0 b
end

0 f5 t8 N5 p' z% T$ c1 I
3 Y6 j  a3 l8 A  ?to do-trust " }  Y- K+ \/ f9 A
set trust-ok False+ v4 Q& F9 _% s1 s" u

% h3 Z6 p7 Y6 X

, Z' b8 i( _: Q2 |9 Z. S+ |4 Y8 S8 Wlet max-trade-times 0
' Y- V9 ^9 `( N4 B3 s! h1 hforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]& J2 Q/ V. N+ l2 |7 w# J- ^3 S" l: B
let max-trade-money 0
# Y- Y3 }6 Q! d/ m8 F3 h4 j7 eforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]8 @; J/ f% {) Y6 }  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))
( |- h3 K' G! J8 e
  y7 k( y- _% `5 B5 O3 a
' P9 T. r' @9 X" m5 P
get-global-proportion
( \/ |" v1 a! K! R  flet trust-value
  m% c9 ?/ g. N+ o5 V: Nlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)

9 i* G$ i6 o1 n7 Kif(trust-value > trade-trust-value)/ H$ F! i$ T0 W- f% r$ ]; t. E
[set trust-ok true]) }9 ]) L6 [, J+ ^& B! Q% U' N
end. C. b$ }5 D, \- m6 I4 F! I

  T8 m& [. }3 o2 }! gto get-global-proportion
' h. e1 C' B. [; |9 e% Mifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
" V/ I$ @, }. k  K$ V! s- V[set global-proportion 0]
0 q5 k" q+ @& V, R, u4 \4 @[let i 0; {# Z' l; T, N. p% c
let sum-money 0
& Y. G5 ~) g; H$ N' }while[ i < people]
$ f7 N% g. i" E+ `5 P; c1 K& ?# D8 s[4 j2 `! n8 @) v+ a7 p3 e/ I! ]1 e
if( length (item i. c3 b, s! J4 |9 |6 [0 z
[trade-record-all] of customer) > 3 )
1 r  q4 H$ a- @$ g
[1 j/ T# L# l, e4 ^+ N4 k
set sum-money (sum-money + item 2(item i [trade-record-all] of myself)). O9 H( x) p- N4 \& g8 J/ a4 G+ f
]1 @3 o) I) k* S4 v2 C& t
]
% M4 B/ W$ L& O. e1 T4 m3 M# qlet j 0
( ?/ z$ X- @$ E( l" G; i1 ~let note 01 R4 {( T- u7 h6 w: [" L
while[ j < people], d# y+ a% R1 h" |& c! R
[
( T: f) ?' T4 Y' `% m; a) Z) \! cif( length (item i
" r2 a, G/ o! ~. Z5 }7 _[trade-record-all] of customer) > 3 )
2 m* M6 ]: K/ \2 k. A7 `
[
" V% x+ I  J9 e2 _ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
; T$ }: J) U8 ?; A; b  `[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]) I9 a; U8 g& [
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]/ z0 p- ?2 b! R5 W
]
7 V1 C( n. w/ A: K. E, B5 o! f0 `]7 ^- Z! K1 t7 n" }
set global-proportion note$ o7 ~+ Q1 u+ g4 |3 \
]
0 U2 M8 z* K( F2 q/ iend7 G  y5 \; Q" B! s1 s6 E2 E

: _' A" O% n& r1 l( n, Uto do-trade4 Q/ j& |- }1 e3 ^/ d: J' k
;;
这个过程实际上是给双方作出评价的过程
3 ?0 u) Z6 K. b3 P4 t( o  rset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价3 Z5 Q+ y! s7 ~4 m: \5 ^5 s9 M
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
' N5 w# z. F- |+ m# D. Fset trade-record-current lput(timer) trade-record-current
9 d% T' |9 A7 V6 H! l$ ]# T;;
评价时间
% g  f8 Z$ g2 N# eask myself [
% P- l; X% B, D0 g; r6 m: Fupdate-local-reputation# V' P7 S/ |- w5 `( B/ e+ [+ V
set trade-record-current lput([local-reputation] of myself) trade-record-current
, z. }+ D7 _) y5 y5 `]! c: I; G1 h  E0 v$ P
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
# q6 p! D3 O# h;;
将此次交易的记录加入到trade-record-one
* I& J' _, K% F. ]! R4 b* q* Wset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
1 T7 D, X. M2 u  O" vlet note (item 2 trade-record-current )
6 B6 X+ D: b3 l2 lset trade-record-current
6 A# L. q& t9 p; ^" k, }(replace-item 2 trade-record-current (item 3 trade-record-current))

+ S+ D' C2 `* R  R/ }set trade-record-current
1 J. c' N2 N, m: Y2 N(replace-item 3 trade-record-current note)9 x$ P& Q; {# w; u( y( I

( _' p$ v* h. z

+ S* M# Y; R% w6 W; qask customer [  L8 n4 z4 P# j- l. P
update-local-reputation2 C5 v* X# n( [( }
set trade-record-current
$ {- j5 i  }5 b5 k% s0 f4 z" y! s(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
. i# [9 R6 M; g9 H
]
( @( Y! x& g0 j# {, G5 S8 H3 r7 b5 H4 Z+ U$ Q, x

  V7 Z; G  [: d4 \4 m, C! g/ |set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
' I2 O7 v2 I5 r

7 Z, b4 W; H' o* y9 K, j6 b, Kset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
/ F, k3 o* M$ D! ^& s2 h& Z2 [;;
将此次交易的记录加入到customertrade-record-all4 w6 W5 i  u: _: ]) Y+ R
end+ e1 b/ Q$ |( K% P

! _& p, c! g+ \; h* g" Pto update-local-reputation
+ W9 R7 c/ b. E, E0 Rset [trade-record-one-len] of myself length [trade-record-one] of myself# m8 B: n+ o0 N1 l' `
4 F  n' }8 m/ b" y" z" `

; k7 T! H3 i0 G0 l;;if [trade-record-one-len] of myself > 3

- _( Y4 o5 ?4 j' e& iupdate-neighbor-total
+ @0 {& T3 ~- x6 U8 Y;;
更新邻居节点的数目,在此进行8 b, }- N2 x7 i9 L& ^
let i 32 e  u' D8 O# g, v
let sum-time 0( I8 h8 Z. W8 T/ i1 ?0 |7 W
while[i < [trade-record-one-len] of myself]
2 @7 o  \% G) Y" n( V( B" y1 a[5 V6 y( j/ ?4 h( \
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )! Y) n, T$ `2 N
set i3 f8 J! H4 ~# s- W# X- z8 y- l2 Y
( i + 1)
- x* C, [) t2 m1 t: f: U
]
! c0 w! U: u' N9 |' |' R( r- qlet j 3, v% p6 `% j- R
let sum-money 0& E( w3 Y9 W* s+ C
while[j < [trade-record-one-len] of myself]! q! l, ^, g' J) S
[
, h$ P- ~8 {, V, A$ qset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)! C' ?0 b" j, X6 e% Y0 c+ I; D
set j3 W, s, w4 L3 a. i  A* f& f
( j + 1)

, @; Y; V% \' i4 x5 \6 S]- S! Q( F: s% ^" k. {: N
let k 34 {+ A- q1 t0 y
let power 0
" M! `4 W" b7 B& ~/ O$ Klet local 0' _8 C/ y1 l+ i0 A6 ?$ d! n1 q  W
while [k <[trade-record-one-len] of myself]9 }. [2 g5 o6 ?& j4 x5 I
[8 q, y# y1 O/ w  I; 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) 1 L) H# B/ l* n" c
set k (k + 1)' h4 V" j, e2 O
]* f& V# N: F- W, s( Y9 I! v; A1 b& q4 p
set [local-reputation] of myself (local)9 ]% N' T0 D& {: J, j+ O
end
2 A+ P0 k( }+ Y
* _4 g* U( g8 a# Eto update-neighbor-total) M  k& A) I- i9 R# }# }
3 O1 {1 J1 M& `
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
$ u1 n& I+ _5 d; S+ m/ _6 M3 X( m3 s$ D

# E6 b$ ^: b" {# `end/ ~2 U9 W- A/ e* q! g1 i& @7 z, ]

. N) y! L0 p' ?2 V8 \# E- B* y9 gto update-credibility-ijl . z2 y+ L5 h. C+ G2 I( w

& \9 t' B+ t. v7 T2 h;;
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。
' w( n2 R6 B% E/ S8 O  Qlet l 0# r* x2 m! b  X7 i9 e7 }6 ~* L
while[ l < people ]/ \) l: R0 j7 W; z4 B( M
;;
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' k7 T) C* i: t
[' k+ T. n2 Y8 O( o$ _' s. p
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)3 O4 i2 r4 B9 u) `
if (trade-record-one-j-l-len > 3)3 {+ A$ z' B- f  Z
[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. q0 G0 F- e; D2 u% P! A7 i& l% T
let i 3
. M. ^& z  M1 e4 }; Z1 Llet sum-time 0: Q& U6 Y/ C0 i7 E
while[i < trade-record-one-len]
/ L2 q) ~) t, @% @- e# r0 I[
/ M1 C, S6 w4 X, g. e1 F5 G  ?set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )4 h! r6 ?: b9 a) o* a1 E2 ?: L% [
set i  Y) \( \" L6 V2 Y6 a3 D" [: o
( i + 1)
  Z+ v$ A+ S! N) S- M, l& R2 c
]5 {1 t, R: h( x3 b( H; q
let credibility-i-j-l 0
- \3 t( ^7 j$ A; |4 U' {  @. H;;i
评价(jjl的评价)
" h8 T: o+ z# G1 M5 b% I: }  \( x* n9 Nlet j 3' U) \- k  G( S) h; n) v+ w
let k 4& u1 W  ^4 w9 H6 c1 H! _7 m
while[j < trade-record-one-len]! b" C; ]) Q- c: _8 o9 r
[
! u. G$ `8 I) Cwhile [((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
/ W, ^! P, E# z% `+ @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). W, X# s* X" P2 y! L$ c6 W
set j
: F+ N: e, K) \$ F( j + 1)

' _% R' O% Q( ?]
. {1 ^; G6 r3 E, e9 N1 J8 }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 ))
1 V2 z( f' q5 M
# G, S) c2 z- o

) Q3 R$ y7 {6 e5 b( G2 y5 ~9 c3 @- Clet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))" C$ G$ H& O0 [5 b8 F
;;
及时更新il的评价质量的评价$ H0 _) X$ y( g( i! X( K
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
% b! f" _% S5 G% c8 f5 G+ Jset l (l + 1)
$ a" k+ W4 k# R% s]
! F6 ^- N/ q( N  |end
- p& p- o3 p0 f) Z' q
- h0 Y3 Z2 C6 j) f8 e2 Kto update-credibility-list
+ ?/ n7 i9 ^- d4 {let i 0' W! Y$ u# g: `" U" Q
while[i < people]' Z/ A3 [2 _' V: c- k2 k
[
; C8 C! K5 ], M! Ulet j 0. A5 J) H3 w# u8 Q" L# C
let note 0# Z9 [0 R( F2 F1 P" H$ o8 Q
let k 07 y7 S3 Q9 U; _# m3 s# r
;;
计作出过评价的邻居节点的数目
: S* T! k( x0 S6 o) wwhile[j < people]
* w' R9 k& y" G6 l- j/ C6 U! i9 b4 O[' y7 f; [; L9 G* j! h* i
if (item j( [credibility] of turtle (i + 1)) != -1)5 u3 v4 G" p# H4 X; E
;;
判断是否给本turtle的评价质量做出过评价的节点
3 c3 {: c; S& b[set note (note + item j ([credibility]of turtle (i + 1)))  q1 H8 S+ c7 h+ s+ ?4 |8 ?
;;*(exp (-(people - 2)))/(people - 2))]
1 \0 b# g( P% k9 c+ S) [+ a
set k (k + 1)7 s' ^& y( W0 t7 l# {( A
]
6 f! D2 c5 X& `! s4 [set j (j + 1)! n+ M0 h- j/ ^( a
]
! c/ k' i& `6 w2 r5 Jset note (note *(exp (- (1 / k)))/ k)
& I, U! N$ r0 |; ]# Pset credibility-list (replace-item i credibility-list note)6 v7 \( M& i5 ^2 ?$ [/ O. d! }* D
set i (i + 1)
% Q! i) B5 f) p3 w5 D* X]1 C( I0 s; ]& J+ u& }4 g5 E8 y
end. t$ o2 M# ]' [2 @

# e4 p& u1 J( y3 Zto update-global-reputation-list# Q; D6 n9 D5 E( w6 O
let j 0
: R) G( Y# M3 U  ~/ {9 q6 y7 pwhile[j < people]
: b. O' g1 U6 x8 [2 A4 h[; t0 b$ ~5 s& E0 x$ N. {/ ]5 q3 G
let new 0
3 I" C0 t0 U6 e7 x* X;;
暂存新的一个全局声誉/ @6 C( Z9 B$ }( N- X$ x! S
let i 0
! l6 Y2 P, C: o. |1 t3 Olet sum-money 0+ \$ b1 S# P+ m7 Z1 J
let credibility-money 00 ]5 }: p% V8 p
while [i < people]
' C) q& u9 ]- D  w  Z[9 N1 ]1 t2 Q2 c$ A0 G+ S
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))1 U+ x* w; S8 B, t- v( b
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
" S0 K/ r' A2 W* X1 F9 Uset i (i + 1)" r" R3 m  T, \" N" _$ Y
]; O8 J& m; u& n
let k 04 e8 K9 |  p3 k# l1 N  B2 M# e
let new1 0
6 l& x7 y. R0 H) f9 ^while [k < people]
' z) P( h# C7 }* g. ]3 f& ?1 _( \[
5 H# a/ u; K1 Y( S9 ~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)
- }2 F3 s: \+ R) |set k (k + 1), V2 {6 }/ \0 A8 D
]/ f6 v! L, X3 @0 e& T9 W
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) 0 K( E7 Q" X- I' q# i" n' `
set global-reputation-list (replace-item j global-reputation-list new)
* [  A8 P( W4 Z8 Y8 }/ m; Iset j (j + 1)
& l& t# Z" ~) B1 Z( T3 Z]
& H7 W) v9 N9 A& Kend* n7 D+ o5 r$ k

+ o3 r- H# Z! [9 ]6 E2 L$ o( F
8 M# T8 D4 M2 }5 i( }( ~- b3 A. t) d5 v( _8 E' `
to get-color
3 c7 f0 ?& ~! T1 D, C8 }+ [- ^1 r2 e, `. @5 C8 m
set color blue
" |( V: B  {# {8 l1 f0 O
end
1 j% i4 R% ]$ @
" s, o$ U8 f' v7 ~9 j3 n# B& Ato poll-class- Z( q8 }. E" r# b. u
end
4 ?6 y( J* n' s4 }: A/ Y( O6 y0 [  S( }7 x3 o
to setup-plot1& t! n  n# r* C$ Z/ S

" y" n; l# z0 x7 Y/ Wset-current-plot "Trends-of-Local-reputation"
. ^" v  a* ?8 t: x, i4 L$ j- c
; s" [" ~8 M, ~/ x
set-plot-x-range 0 xmax

* w; {! P3 G2 P) E; R% ]
9 K$ Z1 l) c; Z9 L) b. mset-plot-y-range 0.0 ymax
. X( h! o$ p! w# H( \8 ?
end& v5 s$ m! [& |' p* _1 i
" G9 k# a, R' G8 Q/ P  \+ Q
to setup-plot23 {4 h3 p% c, C( ~4 z8 }  h
: i# A4 l; m; g& M9 ?( G! t# }
set-current-plot "Trends-of-global-reputation"
, g* c& [8 q0 S6 Z2 E+ ]

3 O8 |, p6 N. z1 n4 K/ G  Xset-plot-x-range 0 xmax
( n& i: X3 f0 v( `1 o2 g! H
: n2 I, D" U- U# `1 |0 K, Q
set-plot-y-range 0.0 ymax
1 [( d: t9 y" ^. D/ @
end" D- s3 O* |' T/ }$ O" j7 g" g
) E7 J$ ~0 j6 y
to setup-plot3
  t; d, y* c3 o/ j" `: ?! d
; e" g& r( k0 Aset-current-plot "Trends-of-credibility"

" p" v0 N' |: A+ {/ q' H+ u5 t3 s# z( n+ k
set-plot-x-range 0 xmax
! |  C) |) x6 Y9 O% q
( z4 x3 c3 y3 i/ O' S2 d5 x: Y8 t% N
set-plot-y-range 0.0 ymax
& ^. A. p: U6 c
end
2 k) h) e6 a6 {' j# ?6 X; m( N6 ]) a3 M& j
to do-plots
$ B  E! I  {3 S5 aset-current-plot "Trends-of-Local-reputation"
) s5 D# U+ y5 K, v( E6 {$ G9 sset-current-plot-pen "Honest service". Q% L8 U% f( X& A
end
5 r# ^' M1 i" w' G5 t
5 g) x4 g* v' d: O& I[ 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.
7 ?8 v! F8 A6 t, `* I' A0 n: W3 p$ M2 v4 \; v6 ]) I
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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