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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:
( B! V) S6 I/ _$ ^& o; yto do-business 6 N8 ~7 n( a' J9 I
rt random 360
# p2 f* ?  w4 I, o9 _5 T& H) ] fd 1* M6 S. i( Q# w" F
ifelse(other turtles-here != nobody)[7 b* V3 w, F" Q" z1 }! n" Y
   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.: c: V/ j& V2 b/ C, @+ v! q2 a
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    # l6 v3 e: s; P8 E
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer4 Z+ A! h; F, h
   set [trade-record-one-len] of self length [trade-record-one] of self9 h. e+ T' ~( i* \8 _  A7 X
   set trade-record-current( list (timer) (random money-upper-limit))
- L" Y' a$ c2 ]: b8 v6 U6 l& Q3 j9 g* c# o' X  Y( k; n* U
问题的提示如下:
3 k" E- T/ i5 D! r7 ?
% @; e) r, ^, {  V" Eerror while turtle 50 running OF in procedure DO-BUSINESS& V$ }& G5 C2 j
  called by procedure GO
! E7 a/ ~  h, `! v$ B  ~% \; ~2 \2 \OF expected input to be a turtle agentset or turtle but got NOBODY instead.
+ {* i$ K3 Q: h; ^
(halted running of go)0 n  |/ e/ _  V

8 e+ a! v  ^9 M  N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 U9 [! k" v0 Z0 W
另外,我用([who] of customer)来获取turtle的编号的方法对的吗?如  set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    中.

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发表于 2008-3-17 17:34:20 | 显示全部楼层

资料不全

你把你的所有程序传上来我看一下,估计不是大问题。(南京大学)
 楼主| 发表于 2008-3-18 13:10:54 | 显示全部楼层
你好,这是我现在正在写着的程序,以上问题就在其中,请多指教9 [4 f2 }) X1 H0 W. Y$ s) l" e0 @' [  C: J
globals[
4 {& D" r, Q# w* ]xmax
$ G( ^$ [) {1 D) _1 V3 H, Q; Gymax
( I. F. C+ C/ |  Iglobal-reputation-list
5 N0 X, g) c6 T! J
/ y5 |+ r- U' C5 r;;
每一个turtle的全局声誉都存在此LIST8 M7 L8 o4 n  Q0 j# X6 S! X
credibility-list+ B/ ]" F, `9 s, X
;;
每一个turtle的评价可信度
6 ^$ y1 j% e- w4 s  A4 zhonest-service
. m% }+ N& [6 n7 Bunhonest-service
6 f6 `/ A! i* J2 [( M  \oscillation+ Z: I4 c3 b  R% c  w- f* a$ Q
rand-dynamic0 C# V! D; e2 g
]$ W# D1 p4 ?2 r) _
  ^1 P, f; ?0 a; j
turtles-own[
1 V5 x! l1 _$ A: _% ~- ctrade-record-all
- E. ?) H! q& I6 W;;a list of lists,
trade-record-one组成) k0 f5 L$ _' n9 z
trade-record-one# T' h" P2 N: N* O9 R- v6 i
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
& v9 `) N; k  q7 F! |5 j! D8 N- E% a! Y; Y+ Y; J
;;[
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]]
: R( T0 M3 m7 j# ?" jtrade-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]
, z7 E3 j$ a" o- \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
0 J+ S) M$ q$ K( X8 m* J& X- xneighbor-total
8 L) Y, K2 l- x/ C- Z;;
记录该turtle的邻居节点的数目
& s5 y( o8 f% ?' L5 btrade-time$ O9 \) H4 i2 h7 i) K
;;
当前发生交易的turtle的交易时间
9 E5 o' e1 A$ i* F6 i7 G6 m  V  ?$ |appraise-give
1 S9 D) U% x' V0 L6 n;;
当前发生交易时给出的评价
3 }  Y4 Z  s8 S( e) Cappraise-receive  z3 H& ~/ k3 G3 M5 T$ n2 j
;;
当前发生交易时收到的评价* j9 f+ Z# X/ V) t
appraise-time
2 K$ L- H5 j5 ?' y# i5 Q  Y;;
当前发生交易时的评价时间4 ~9 H# B7 Y! E' o) e/ Q
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
5 I2 P* m" L4 A5 I5 X3 @0 Ltrade-times-total
# u$ s+ M* f& h9 \0 K# d;;
与当前turtle的交易总次数% `( y' T. ^) w% K. `+ X
trade-money-total
9 I( ?& U& F1 F;;
与当前turtle的交易总金额7 E* A4 X3 @  m/ F& p$ Q
local-reputation
$ A. x* W1 U# Y5 p4 n4 Yglobal-reputation0 A. T" o. W0 Z; n# A
credibility
) V4 ^: E) L* N7 f;;
评价可信度,每次交易后都需要更新# `7 k- T; z5 G1 S: s0 B. d
credibility-all
3 {% \) {1 s; R3 ~% J( C4 P3 ~# N;;a list of lists,
credibility-one组成。[[1j的评价质量的评价][2j的评价质量的评价]……[ij的评价质量的评价]……],其中一共有people项,根据
( ^  H: J* J# d. i9 |+ k2 B5 T8 D. u& o$ `- J
;;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" Y; L/ a, L1 \  c' ^5 @- s
credibility-one
9 M1 \3 t: S0 O;;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
" w4 J- i4 a/ i0 a( Kglobal-proportion
3 J# X0 S/ c2 M3 w+ _customer/ S! k6 k9 Q2 H8 P4 M0 @
customer-no
1 a" A3 S/ h# \trust-ok
( z' K# {- v- Y1 v- m5 qtrade-record-one-len;;trade-record-one的长度8 m* q( i& `/ O& @/ ^2 i* }. ~9 D
]* w0 E6 |( U/ T
" g8 W4 i" g/ r1 z4 Y  z% B$ s
;;setup procedure. S, j5 j, V& n% u( L& P" _: d4 D

" r8 V( }6 g) g, ?% ?5 Xto setup
# J/ _" t& d" Z. a
: z7 D$ z& h9 q7 g4 L/ Nca
: J  I# C( O" }7 @) F
' _$ k$ N0 Z9 h
initialize-settings

1 ~" r6 b) s1 ], k) O! c1 v' l, Q9 U- a9 }  i+ X; K9 k, @
crt people [setup-turtles]
/ R: ]0 f: P0 g9 G  A
1 }# u+ g2 `( B; B( I! `) M) \
reset-timer
& E! L/ l$ A" m

. ?4 K1 K  T3 ppoll-class
6 \" _( {: a, G7 o; J
6 Z6 P& g" B8 T  I, C! x
setup-plots

! K8 y5 u" F* j/ X
  M( w  p+ n( `$ B, a) p. a$ zdo-plots

% }( X( r, x4 q+ N$ _6 Vend
2 X$ Y9 e9 C; A$ j% @3 k6 Y" y2 \4 y1 k( P1 `
to initialize-settings# q* k4 _1 Y2 n' ~; e7 V2 O

" S: D; A! a* rset global-reputation-list []
' N0 e3 e3 }5 M$ a9 J9 m5 R* {9 C  T
8 @. X: r1 }4 S4 C3 @4 c
set credibility-list n-values people [0.5]

1 r/ x0 z( i+ X
; A2 M/ j3 y3 I9 Z4 M; ~$ [set honest-service 0

" p7 B; p2 z  M! @3 v9 e4 `; @2 l: R) j, X) w$ O9 e
set unhonest-service 0

7 O$ \+ d3 n& |1 t, S3 z, e9 R/ C7 Q4 [- V
set oscillation 0

  T) I3 J" ^$ r! t9 U  y2 V# ]# G" J; ?" N
set rand-dynamic 0

$ S& U; c. |8 y" j% e" i( e$ Nend7 }% S& U! j: k! A# N

6 `+ j2 v1 g2 s& F! r# ]+ E; dto setup-turtles
; E  w* I* L  M" F4 tset shape "person"
$ _7 X% }1 ?# h  z& M1 J! \7 |/ [) isetxy random-xcor random-ycor5 J9 E0 ?* ^) I& g
set trade-record-one []( ~0 x* G/ y: @9 x. f/ ^8 }# @' `

7 e5 L1 q) Y; B; X" p% y! Kset trade-record-all n-values people [(list (? + 1) 0 0)] 0 A5 l" }5 d6 ~* i' C0 W
- B) Z% C0 I' Q
set trade-record-current []( P4 o7 |& D2 q' T: P2 t8 V
set credibility-receive []" ?0 E. ]2 p! F. ~
set local-reputation 0.5
( [6 O  ]+ m5 B! oset neighbor-total 0
5 V9 Y9 v+ c& Fset trade-times-total 0
" T* t# d( r3 b8 iset trade-money-total 0
! T3 \( f- Q$ b8 V8 v/ {set customer nobody/ ?4 p' U/ |/ o, q: O+ t
set credibility-all n-values people [creat-credibility]
1 k, R5 Y( K8 \1 |8 j2 zset credibility n-values people [-1]
( @$ A. s2 w1 iget-color
+ ?. h. y  T7 n' p- S1 T. D

0 V( W4 J/ E2 ~+ w! Wend$ h& F* M/ Y1 a* D" p0 I
5 i0 D% N+ q% f: w: |! N
to-report creat-credibility
, W5 [; s' z9 b! z, Kreport n-values people [0.5]  F' K, A# m! p, c
end
3 e& W4 ]2 n- O7 X+ q0 g$ f( J
; D  {) W8 X$ j  ^4 t1 s  S$ lto setup-plots7 e) |; w& Y, |' @

0 @+ q' S4 P8 |& x9 n0 t, p: Cset xmax 30
( s  M7 ~) O  o1 m  V

& z8 |6 H& t7 E' \/ @4 xset ymax 1.0

: n: B/ {4 V  y% c4 F3 {* c4 {" `4 \: a' A
clear-all-plots
* R' x3 b/ W& t
6 d- Z8 H0 V7 Y, R7 l
setup-plot1

" g/ j2 y3 V' R' `5 _
: E0 \* ?3 z/ h% s5 c. {6 C. V) qsetup-plot2
/ ^9 Y$ I5 q0 R- i$ S2 h1 m
0 Z4 O7 z+ Z$ ]* j$ i: x
setup-plot3

7 Q% g) T4 o! F  mend
5 N) H! s; }; J1 t2 e: T' ?! j+ u/ q) ^9 J
;;run time procedures
! m7 |; e6 X. c& r
# `* |2 k0 w& F) h  Mto go
6 u3 D# e. x2 u! @. R, i2 U' P8 _; f6 q- M% @) x
ask turtles [do-business]

8 u# A7 O* C6 |  `/ E1 gend
7 p, ~. p" }% X; y# }; I/ l4 X
$ t/ b8 q4 `% J; P" ~to do-business
8 X  p$ T# s- W, E

/ ~! X8 z/ G" ]0 P$ g) h! B! f* g& k0 b
rt random 360
8 t" i6 M8 N+ c5 y$ m8 F

$ [1 B6 s; b0 S$ Y# z0 B) Ffd 1

% j7 e  s4 ~# L% {
3 t- a) D% o2 L$ aifelse(other turtles-here != nobody)[
, f: g2 T( B9 {6 N
9 z6 T) n% M# L
set customer one-of other turtles-here
' n+ z4 X# D9 M7 @  k4 K- t- [

5 b3 V; v, ~6 W. }6 z) p# U- z# C) |;; set [customer] of customer myself
% h9 p/ M, W) p5 N9 m0 z$ w9 v8 @

3 M! N) v+ B+ p7 S3 q, K" Iset [trade-record-one] of self item (([who] of customer) - 1)+ F( v3 a# r8 i" P4 q, i+ k$ c. }
[trade-record-all]of self( C9 O+ e* u2 d- Q3 H
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
5 D2 \8 t2 w2 K7 z1 s. l

) w; ~) L* K7 @: y! O, C; H- z' Sset [trade-record-one] of customer item (([who] of self) - 1)- j, ]& L1 B4 a* t& j
[trade-record-all]of customer
! z7 N+ {. F% K) y/ I
- _" ?; S: t- r
set [trade-record-one-len] of self length [trade-record-one] of self

9 T2 s% t3 N$ J* y
7 @! [3 F$ T+ bset trade-record-current( list (timer) (random money-upper-limit))

% |7 w. r8 B9 _) ~5 y; K' y/ |5 L# L0 G
ask self [do-trust]
" ]- ]9 r: g1 {. h% N/ d8 L;;
先求ij的信任度
# F0 B( l! b) H6 r0 L7 c
2 X& E6 Y1 h; v  lif ([trust-ok] of self)
" w) I! X, s" s5 X) u/ N;;
根据ij的信任度来决定是否与j进行交易[& R) H* y' m$ a% f/ @& x6 X
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
+ j" w& q0 H  l1 k5 G; }3 ~) W( K" X& r0 |
[

0 e: d3 q7 E7 x  m/ z/ h' I4 G4 K% R3 V. p& d4 w
do-trade

  v7 K/ U3 }/ f2 e3 v, M) K* e+ m0 a: k. n% ~; c, W6 {
update-credibility-ijl
9 f. K3 I* }) u  p: L
+ i" E/ N" g  Q( _! Q" X
update-credibility-list
7 n, [# a; Q* P. Y

( e# h- o5 @! k. H
5 s# m: X- |# o( H9 [6 ^update-global-reputation-list

- {5 e% ~2 I! l/ i1 t! Z' R4 l2 u! N- i
poll-class

% R7 h8 k. P! g/ Q5 ~9 P+ g7 L  v) W. L+ |4 D' \7 h
get-color

# m- R3 v; B- t0 U6 m) y
8 x, A  I/ R: w- l6 C]]
0 R. u6 L$ M* x( X; F
, c' [) \, p+ J. f;;
如果所得的信任度满足条件,则进行交易8 N3 ?. G& P! b2 M

; Y# k8 n! |" T- C6 Q* x5 ^[
) g& q2 o7 U3 m: f
5 I' N# x6 ]% _8 m
rt random 360
# D$ R+ s; v! V8 `0 z
- M! Z9 [* c6 X4 T/ o- ]6 j
fd 1

( N1 D4 D4 M3 l3 b8 c
. x9 P3 N& m: E3 S0 w  |+ i]
$ D. s0 {) r6 V0 h) D

' e( j% g" m: z) V# Wend
, g# w( M: Y! g4 t! g1 }: x5 A

6 u+ Q; y: a; J7 ]3 f* |to do-trust
: E$ W# S7 |' j( m: r( R( a, [set trust-ok False
% `% @* _+ g# k. U( z9 G! s' H) O8 C9 f7 M
- R! ]9 P2 E) m! G
let max-trade-times 0
9 w5 J$ W( h% a% ^6 w6 pforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
/ P* Y. P2 i( ~6 glet max-trade-money 0* w6 U2 N0 x! e, a
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]! b- C9 }; E+ i5 O/ m! }4 ?& P5 m
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
- T) P; L8 E& p" G
' [5 P3 O; O' u: L3 p  z0 |" N
. `# V6 l, M1 r1 {% q
get-global-proportion  x- a( T9 ^0 X2 a8 W
let trust-value! }$ L1 m1 g# [3 q9 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)
8 H; ^% Z. t1 N1 t( }7 l
if(trust-value > trade-trust-value)
9 R2 z2 y3 `- }" U9 n' i- U' S$ G[set trust-ok true]
" P6 n: P4 v7 z4 V# W* S4 K6 Aend( @1 D/ Y- r) l# d" R

; U- v+ T1 Z1 `, e( [- O9 g* q! Kto get-global-proportion
& z* G: K# F! l3 w0 W$ `$ iifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)2 A; J( k( }* ]( B( I" X. O4 m$ P
[set global-proportion 0]& t3 S  R, f* ]( j' O0 p
[let i 0  K" \( m' d2 w
let sum-money 0
" `9 s2 |; ^- t* V5 t: w9 w2 F: H  _while[ i < people]) c. `* c& p: q7 @$ h
[  p+ ]% D- F  f) }% F, m0 X; Z
if( length (item i/ O  P7 K! W4 ~# e5 z
[trade-record-all] of customer) > 3 )
3 N- D" K2 j9 h( s+ j
[& ?" D. D0 w3 q
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))4 s$ R; m  H  @7 p
]4 F: P4 g- A5 t2 k- h
]
# i/ e% i1 A% S* s. m- plet j 0$ k5 E; q9 w7 h1 ~
let note 0/ w* H- _/ C; w+ `& L+ y: @5 l
while[ j < people]. J* L0 j/ `6 x
[" N/ i9 {$ O' i8 k9 v5 N% Z
if( length (item i0 L8 ]2 ^( C2 H' F' U* y9 [
[trade-record-all] of customer) > 3 )

& s) k7 Y4 o' m# z[
6 q/ J! a$ X7 g/ s! E  `, nifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
, w# y0 `" |- ]$ m* _, Z' o[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
# ~- E) @3 b4 v4 p- f) g0 |[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
% h" A+ t  K# t0 I3 l+ ~]2 Q- N! V- i2 V; }' ^, a  u$ i3 S
]
0 _1 m9 J' P% F0 V5 l4 S( W6 G4 kset global-proportion note
4 t2 M" z  q5 }* D0 ]  K! z- B6 ?]
- t" ^2 V. s8 ~3 x" Gend
% y7 W6 v2 j& ]/ f9 H1 g9 y* [* T" H, l& k% w# w
to do-trade4 \) A- o1 x/ t" G1 q: P
;;
这个过程实际上是给双方作出评价的过程
. B, _2 x) z$ `! C9 K! ^2 vset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价5 t# k$ t( I8 Y0 ]5 n
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
  \( _% x' A. j/ G1 K5 G/ C; Pset trade-record-current lput(timer) trade-record-current; ~' ~2 N- a/ V3 Y- I
;;
评价时间
+ z2 Z1 q5 Z. I' \' S/ Wask myself [4 \4 {- ~* y" W! \/ C0 ~, \
update-local-reputation7 l) c4 k* a7 Y8 f& ^% J9 T# @  ]
set trade-record-current lput([local-reputation] of myself) trade-record-current+ ?  M& C- {3 N+ h' x) K- }
]7 B% b( ~1 j5 m7 \& i2 u
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself2 y" X( q7 S% E0 ^
;;
将此次交易的记录加入到trade-record-one
- }- g$ K- x9 c# Nset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
9 I% n( k9 B- h' e, Olet note (item 2 trade-record-current )
2 S  f; ^3 y( s6 |set trade-record-current& j- V! d! j8 s% |
(replace-item 2 trade-record-current (item 3 trade-record-current))
2 {: R, i, E  _: x
set trade-record-current
0 R  V, T& m/ }9 T(replace-item 3 trade-record-current note)
* M6 z& k" d3 d+ u% C$ k" W( ?0 y8 O
7 A. g* t9 J9 O0 Q5 f+ S- b& R

* ~' Y- [. I6 L' ~1 w4 @5 [ask customer [
  n$ T( F7 b9 O: xupdate-local-reputation5 x( U$ ?7 m  |+ |+ l' v, s$ t
set trade-record-current
$ I8 f5 K3 q. n) _8 r; X(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))

% x: ~9 T1 I- |- @2 O2 H]
- T2 v2 c+ A  Q
6 d3 W. X9 X' V6 y

/ l5 L& h( E4 G' H* l: Y0 \' Wset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer. h6 x- p5 k* d8 y4 P9 l
, p6 R6 E/ [3 C8 f9 Z
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))$ D* r; \' ~  B
;;
将此次交易的记录加入到customertrade-record-all) r2 M3 ?' [! w. T( s9 t
end
) g) ^% C2 O# O% {9 K! u
' o6 L  w  U8 n7 s8 L% ito update-local-reputation0 j, I: Y- y6 X- q1 Q: l
set [trade-record-one-len] of myself length [trade-record-one] of myself" X! V6 I# V" J8 ~  o8 }

! n5 c6 U3 h" ]4 p+ J/ |# m7 A* x- D7 j+ q
;;if [trade-record-one-len] of myself > 3
; W6 l" [5 `6 Z$ E7 Y" q' q
update-neighbor-total
, W# ]+ |( E: w" R: u% e1 I;;
更新邻居节点的数目,在此进行
9 `9 d# t$ _( F) I) ^let i 36 c7 G" u* v7 R1 h; |- b  E6 }1 Z
let sum-time 0
/ n/ P" q# n9 }! {" Owhile[i < [trade-record-one-len] of myself]
7 g! s4 f( e' S6 I, w% V) ]1 e[% w6 K) g: m  C- x- U7 X
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )1 s+ W7 s7 |: I5 a
set i: K7 ~* Z" A' }; Y3 D! n
( i + 1)

3 b; l' l! d& M. j]: _# `& ]* x: d! O- ?( N3 Z5 t
let j 3
" T" a- X4 _% `4 [3 Clet sum-money 0: N. d* [: s+ i  ^( A1 {
while[j < [trade-record-one-len] of myself]
3 p* k+ q& p7 D. _* d1 B. ~3 ^8 k[; u/ H- U1 c( n' y) W( J# r
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)! Y3 t' J: g, {, f7 z: s* ~- i9 N/ `
set j3 Q' w. I& L% @; @/ g2 b
( j + 1)
! }" C. K0 q1 ]+ `4 W" v4 u5 c3 p1 Q  f
]
6 |+ L, d. Q+ h  o3 A: v2 \let k 3! l2 ~" N( N( ~9 E# `
let power 0* ~) ]; e. [1 J' P4 w
let local 0
5 O: ^5 e+ A! Y5 ywhile [k <[trade-record-one-len] of myself]
3 S8 `" s. P( ?2 ~/ R2 ?9 a: A[
* G& |3 n( h. Uset 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) 5 m& J; C0 |$ r* k3 b  \6 [
set k (k + 1); c% x% B0 V" g* f+ F- i) a' c
]
% e& v, E" n1 F1 p6 x$ dset [local-reputation] of myself (local)' G# R- B% R; d# e, k
end
; F2 z; b& F6 @/ y9 D2 t; q
$ s* u% F, |, L+ rto update-neighbor-total! T- f8 M, z, R; i6 w; W3 A( O

6 L1 a8 B& c/ Lif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
& j* S9 O! V% i! h& d: u2 d, A4 c- Z% J" \. T2 \( o- ~
; f5 g# |& Z+ }$ {6 A
end8 u/ k* P: ?6 k  _8 {
4 x- I1 Q9 ^( q( F  ^( t
to update-credibility-ijl 8 t; @3 t$ m9 r  x; p

2 G& \. ?) X  U/ _, m  f8 I8 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。
- \: z2 J8 o6 Q) M: Elet l 0
( Z- \$ z4 c& o  t. {while[ l < people ]
$ o% J; e3 i1 }3 p+ N7 m& K9 ?: A, r;;
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
! D+ W* e' ^4 p  [9 m[
6 x$ \+ q& I' K  L" k0 G" h- Alet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
+ u3 J8 `. U* a$ `! z# k# Zif (trade-record-one-j-l-len > 3)0 j/ m: Y' |" A" s, I, 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
/ m0 n1 P" P- {6 d/ F: M: c* W0 O/ nlet i 3, n4 |: n8 J. Q% C0 @1 t6 w3 t! o
let sum-time 0
" x! D2 O+ A; @3 m5 g" kwhile[i < trade-record-one-len]
6 r) h& `, x$ n1 N; Q$ N! g* M[
& s  P& m2 b. H- O+ D7 A, jset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
3 o& _1 R! J4 Z- w  B$ Kset i( ]' j$ O, E7 t, _
( i + 1)

9 k; f7 a/ H/ e$ M8 b]
  G1 ?& V9 ~! i( L3 e( T$ R7 vlet credibility-i-j-l 0
2 H! ]$ ~$ r7 N0 t: Q9 {* }5 B! N;;i
评价(jjl的评价)
: d; Z: x4 l$ u( u6 Rlet j 3- o+ @, n8 F& ~5 m4 L# L3 F
let k 4
0 G5 a* ]3 r; S1 h/ U2 e( b- l* J. Swhile[j < trade-record-one-len]- h/ K; `1 B7 q5 u! m9 C+ {
[$ T1 o8 t1 ^3 c2 J
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# R* T* {8 C+ ?7 ~' ~3 K$ a8 k
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)
2 V% _& O- Z! |  L% A4 O0 D9 kset j
$ y1 B/ g9 L) Z+ q( j + 1)

- w. B: r  x( s2 p( n' E& D]( V) p) e, F5 f' [2 E7 b& [# N8 \- ~
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 ))" s$ k4 i6 p* T! D

$ M3 V. G, V: C7 ?/ `: D, `7 P0 P
3 g; H# a. b: N8 S2 r5 m5 \
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
6 t) x, Q3 k( c. e% W4 y2 {' q;;
及时更新il的评价质量的评价" J, O  e. x, f0 W9 b3 |- Q
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]$ b4 P; f1 I' d, D4 F
set l (l + 1)* M$ g: c- e2 ~
], d# b3 i8 O# W9 g0 l( u
end
+ ~8 B( Y+ W: M( S& q3 w
8 Y( {0 d& F8 [to update-credibility-list
$ m5 c3 t; N; I3 S; H& plet i 0
6 N9 M/ K4 D; b% k/ \while[i < people]; |3 F7 C, s( Q0 H9 A
[+ |5 o( o3 m7 P! y
let j 0+ D8 g( F/ {# X4 T8 n; p
let note 0
6 u: B2 L; C' w4 ]let k 0, T7 I3 ]! N% p& Y- @! R
;;
计作出过评价的邻居节点的数目6 W' n* q& v7 n% e. ~9 c
while[j < people]
4 }' ]. R; L! r: B# J[
: |4 r9 `0 s0 ]1 c( a/ I/ i' [- [if (item j( [credibility] of turtle (i + 1)) != -1)7 ]2 J, c6 A7 ^
;;
判断是否给本turtle的评价质量做出过评价的节点
0 D1 J- X1 {8 N* d6 n[set note (note + item j ([credibility]of turtle (i + 1))). J* ?4 s. I9 I2 q* B
;;*(exp (-(people - 2)))/(people - 2))]

+ e$ W& y9 b7 b9 M, G: m4 T  U6 Jset k (k + 1)* Y* f1 y1 w2 B) o. J! ~. l' Q
]  ]; {3 K0 O! r0 }2 m4 n; K
set j (j + 1)+ ^3 a" [1 I- E
]& _* ?  W; ?' s, ]. C
set note (note *(exp (- (1 / k)))/ k)3 u9 d- g2 a: N7 ?4 Q
set credibility-list (replace-item i credibility-list note)0 h# @% P4 Q: v
set i (i + 1)' w$ j# @! U% O) d5 I$ ~. x( O7 U4 `
]
/ i+ V6 L) a9 E+ qend
. ^% M( c9 w0 u- C( h5 n0 j, v/ m8 v6 s! n% g+ B) _: H
to update-global-reputation-list
* y3 f5 V0 p# z& Q! ]' ]- p1 jlet j 02 n4 }/ _( A/ R
while[j < people]
3 K- b/ r4 c: K0 Y[/ b3 S0 Y- n3 l. x) j
let new 08 x4 w. q7 ^# `3 D/ l
;;
暂存新的一个全局声誉
7 f- S  o  d& Blet i 0
! X7 r1 Z- s8 c8 Plet sum-money 0
8 B- B+ ^. `( G& ]0 j% u' rlet credibility-money 0
3 [" P$ q; N. w$ L: dwhile [i < people]9 D4 ?5 m6 s& y1 @1 O# G3 r7 e
[4 W# K' B1 @$ _
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
, m% m: d6 b, v" P7 ?set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))' |) @7 i- q6 F1 [
set i (i + 1)+ h) J1 j) D8 F9 d6 W) T
]& m4 \; E2 b0 X, c# z7 W
let k 0
" d) z$ L: z8 {8 n. Alet new1 06 U! H6 E8 i1 r) Y
while [k < people]# d6 f2 _1 B: M( F3 E, \1 a0 b
[
, g8 G6 v% A! C, k9 }( d& Gset 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)
* k5 {& {$ d# W% w( ~5 Z' ^: F( H$ aset k (k + 1)2 u, z2 l3 I" l- k: E% x4 E
]
8 r* C. K9 d7 G$ U8 A1 Hset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) , }" S! L4 j6 O" C6 t
set global-reputation-list (replace-item j global-reputation-list new)( |+ l) Q- }* B2 i" h) B/ K
set j (j + 1)
) e& r# {: l5 P- {0 n]: O5 l+ a$ s$ t" e
end6 [3 Y( g. J4 O

# m/ ?% K& a+ a. s) h8 m* T/ H0 m# Q6 {5 S- u
7 H+ `4 a# e$ R4 C: O7 _
to get-color
0 @! P& v" \2 U0 s$ r5 b- L& J0 B6 x6 }1 A" x; q4 q$ i
set color blue

* {3 A3 m# T  A* eend1 ], |$ o( l/ ~
) \. m5 G6 p0 u8 E- |- L# v2 z' e
to poll-class# C. s2 X$ M8 x; T7 s
end
0 ?- f- d8 L2 j# A+ j2 J( T' d" M9 V' b4 V
to setup-plot11 T9 u2 U* C" {6 k

& C, ]/ b. j% C2 Cset-current-plot "Trends-of-Local-reputation"
, A  w5 h8 U) J4 n

" P' Y% F, a6 a" K' f, _9 Gset-plot-x-range 0 xmax

. |* S: D- W. x/ `" r9 O% b6 o
; r5 R  C7 Y& ?1 j! u. u: L9 Kset-plot-y-range 0.0 ymax
- p2 Z) ]. l9 e4 k3 F
end
/ M0 ~& J% k' p& s* y1 R
6 e" S1 b5 r" Z$ Z8 n' qto setup-plot2
7 [$ Z9 d) Z  N' P  f' f8 s, _5 u. l
set-current-plot "Trends-of-global-reputation"
' j9 E" w7 d7 Y
/ U, q4 y$ i* R: {$ Y" g0 D
set-plot-x-range 0 xmax
. o2 D# L, R# @- t7 z
+ A3 N5 h( Q. ~4 D- T# v$ t9 X/ q( L- a
set-plot-y-range 0.0 ymax

* w- m! n; `+ X' s3 p5 |: {8 @% \end
0 P2 h4 X8 c6 s- x' A! n$ ?! z4 p4 l, J! \% A
to setup-plot34 g7 m/ h3 V& _2 S& U

9 t* G$ A# `# o" [5 [( mset-current-plot "Trends-of-credibility"
# Y+ B3 h# H" L+ Y9 J0 i, L: Z
& F6 ^* r' [1 a0 u  W
set-plot-x-range 0 xmax

4 d) [" D0 `. h: D0 G2 q; a. S9 E: Q2 s
set-plot-y-range 0.0 ymax
  x8 B  _1 `0 t, l0 o' e) e
end
8 J& X1 ?& J1 S( G2 y' U- X' l) u/ M- l
to do-plots
$ h0 ]/ |/ D7 H# i$ ^; z$ T0 _set-current-plot "Trends-of-Local-reputation"
# [* k8 J3 \; M' Q& iset-current-plot-pen "Honest service"( V& n: \- p5 M5 T6 {
end, `3 |  e6 k& G" g5 K4 J

' ^5 F3 G- S) w- L! g, {[ 本帖最后由 Taliesin 于 2008-3-19 12:45 编辑 ]

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发表于 2008-3-19 11:33:07 | 显示全部楼层

有点困难

没想到挺复杂的,我去问问师兄们,不知道你是自己建构的模型还是其它模型的改进,我试了一下好像setup都有问题,别着急啊,呵呵 。
发表于 2008-3-19 11:34:29 | 显示全部楼层

还有啊

发表于 2008-3-19 11:35:59 | 显示全部楼层

还有啊

能不能传nlogo附件上来,一个一个敲太累了,好长的程序啊。
 楼主| 发表于 2008-3-19 12:47:57 | 显示全部楼层
嘻嘻,不好意思啊,现在把附件加上了.
, e4 m, x/ r2 x$ `2 i8 K4 j! H9 K/ M5 j% `, n
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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