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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:
) v' H) r2 T# g3 Jto do-business : o" n- ^  Y$ o, x; B& h0 _; K5 P
rt random 360% x# p7 ^3 L: i( V1 d6 t
fd 18 P, |" b5 B5 L/ p! Q
ifelse(other turtles-here != nobody)[
2 L, D# `9 G1 e# w; m' E   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.; i. e0 }( T& @; `6 T! s2 z% z
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
$ j0 {' Z! G" x   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
. i+ W. s" C2 Q   set [trade-record-one-len] of self length [trade-record-one] of self
# L) v9 R) S+ p0 O4 V9 ~9 |2 T   set trade-record-current( list (timer) (random money-upper-limit))
  C$ M4 l: b6 \  G
- U* J' x/ g$ R* _% k' y% G问题的提示如下:$ n! X( |  R4 `/ |# a% Z3 P1 {
% W) v* C/ {7 S% Y. T
error while turtle 50 running OF in procedure DO-BUSINESS: ^: Y7 ^5 C6 u7 i& @2 w
  called by procedure GO
& m' ?1 f7 o  Z5 e; H: KOF expected input to be a turtle agentset or turtle but got NOBODY instead.
, C1 d8 `$ R* L9 V" S
(halted running of go)  ~; A5 K: U5 h( N# c- A+ T

& ^! M" U5 R! E/ M# n, T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~~
( M7 k$ t* [; N5 f9 ]- |& G! 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3 a( }: @. C" A- ]7 l
globals[' a8 U+ z: R( O) ~1 f3 K) \
xmax5 h5 g9 N% k- @4 r; n2 M
ymax% [/ a& h' `4 E% y" a
global-reputation-list+ x/ s8 n& G# z' ]7 @. A' E+ t! Y, k
) h' f( F+ F% R/ @1 a
;;
每一个turtle的全局声誉都存在此LIST6 J. S) q$ C- k* V
credibility-list
5 M: z  `' m; v+ f+ O9 [;;
每一个turtle的评价可信度
- f- g% y3 o* b1 {/ ]2 Jhonest-service3 j- c. F, i8 s! Q
unhonest-service! J  {6 w/ F& N( z  z+ a
oscillation9 Z+ k1 {0 Y' ^4 ?
rand-dynamic
5 r0 Y2 t& Q+ e]# m: o7 ]1 D9 l/ W

, b0 R+ f+ Y9 [6 C5 r) [turtles-own[9 I+ L5 p0 x) a( N" L' r
trade-record-all
2 @& E4 n# O! d- _;;a list of lists,
trade-record-one组成
- W/ N1 p& m5 U% T9 t) Qtrade-record-one
4 I8 Y/ E) q/ Z;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录+ W1 `" V) U! @% |7 T0 R: p

0 l" S) b% f5 [;;[
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]]
& y( a. h  c5 t) Q' Ktrade-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]; C2 Y2 Z7 L" ]6 A) u% N* p3 f
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
9 o* O1 R% z- R1 n2 r) |( ~neighbor-total/ }) H) p; }( A7 E$ [7 ?& d
;;
记录该turtle的邻居节点的数目
7 a2 Z2 E( a- Gtrade-time
5 L8 l! g- ?0 A;;
当前发生交易的turtle的交易时间9 y/ z. Q) T) C8 p1 ?: f5 U$ f
appraise-give  V1 \. H) ^% u7 F3 L2 S8 I
;;
当前发生交易时给出的评价
8 Y1 S# r8 }  X  j/ ]appraise-receive
8 f2 \* {+ l$ T4 T- z/ e( Y;;
当前发生交易时收到的评价
9 R4 w. C9 R# D/ iappraise-time
- p! ]" F' K3 M9 s. X9 E% P) l6 O# F;;
当前发生交易时的评价时间6 b* r, N- p3 _
local-reputation-now;;此次交易后相对于对方turtle的局部声誉7 p4 Z5 D. |# w9 Q8 x; H
trade-times-total5 E& T, b$ ?7 C* h5 }0 _
;;
与当前turtle的交易总次数( p; d( b* s/ W! |) r. S
trade-money-total7 \* }4 q# E0 R) ?, i
;;
与当前turtle的交易总金额
0 ^8 p. h0 x) P9 Z# X6 c, B0 Slocal-reputation3 R, c1 W0 y+ ]# i% a8 W0 y1 `& s
global-reputation% I& Y& d5 K$ Q; I! G0 P4 G1 V
credibility2 a3 r  ~4 V; y5 s( U
;;
评价可信度,每次交易后都需要更新
# k9 z) [+ e& Qcredibility-all4 L# J0 H0 Y; J; X
;;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 ^: r9 \' ?$ h

6 Q9 g  V( g) j& a;;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& {/ q* H7 w2 Q& M
credibility-one) u( `5 V6 r0 q
;;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( _. h( |$ j- {& V; e7 g! Y6 V7 k
global-proportion, I- _1 M: V+ G& O7 T8 i. t( |
customer
2 I( n3 A  F7 i" B5 U, Kcustomer-no
5 l% V* }2 v) {trust-ok  \4 C& z5 F1 R( E; w
trade-record-one-len;;trade-record-one的长度7 u, Y- U( h' L: z/ r7 S6 x
]
/ |% \; M6 s0 s# u) F
8 i- D. [! X) v# t;;setup procedure6 _4 u" N2 K  [8 i( W7 I5 m
# z9 o- s: h1 [
to setup
; q" S! s1 V+ t2 _& C* }" U2 X* f( ^* I$ a3 Q
ca

5 P4 @- g; A' U8 C6 l1 c* Z; p3 o5 j# k  ^5 H: f
initialize-settings
/ @# u0 Z# T# o9 {: X, N( l3 ^2 j& D
) O, T, ]7 g5 ]9 Z. I2 i
crt people [setup-turtles]

; e0 ^3 N+ w3 T7 K% O# `. k7 i! E. Z, a4 F4 @% n
reset-timer
- w" a; G' V  b/ m0 r. R
6 ^8 y8 ]7 P' |* T, J' {
poll-class
: a5 \8 u9 v( R5 l& H( Z

( k# D  |% E1 ?" W8 ]; v% xsetup-plots
4 \. N9 q, j% b9 e
3 u/ m. S. T" u0 c( H
do-plots

3 N! v. q7 ?+ s2 M* Fend
  F  z  K8 n; ?
4 w5 ?% [9 c9 E$ _3 y1 H1 @to initialize-settings8 E! Q3 Z( M! t6 Y
6 I) b: l* ^0 Y5 a* ]5 P
set global-reputation-list []
* _) k9 e# C; p+ u+ `
0 V) z) r& T* j1 s; j2 D! M
set credibility-list n-values people [0.5]

% E4 O0 e  V# ~$ P& h; h
. z* P; p* f2 c3 ^+ \7 X0 Eset honest-service 0
! S( a/ Q, F# E- D5 f6 V* g

) C# L0 W5 N: U( Oset unhonest-service 0
$ T. |! r( _1 p% u/ `) A

% w* B$ h9 u1 c/ _' \& i: Nset oscillation 0
9 d- I" i; t$ S, f7 d
9 z  F. K. o% S4 e$ P# G. `# H8 ]
set rand-dynamic 0
2 m: i- u! {" g: Y! L  W
end% H5 V- A3 g0 V/ }

' Q# B3 n! E/ b3 L5 ?to setup-turtles
3 \( I3 b! S) Eset shape "person"" j8 v+ a/ v; w% b, w; m, h
setxy random-xcor random-ycor9 ~7 n5 P% v: W% B5 b; m+ k
set trade-record-one []
* {! m5 I% u( V5 \6 J

/ ^+ U% V$ s/ Y' G% Z- bset trade-record-all n-values people [(list (? + 1) 0 0)] 3 ]- X9 e- A/ u, y6 ?( B5 l  J8 @& L0 j

7 q8 F/ r% Y' v- g: _set trade-record-current []
3 y9 X+ P! k' }* g6 d8 [set credibility-receive []) l9 Z) y" w! g9 M' Z% K
set local-reputation 0.5
, W- |4 X- p) u# aset neighbor-total 0
. P3 T3 Q' z2 O: lset trade-times-total 0
( d  j1 V+ h; V. T6 X1 eset trade-money-total 0  D/ Z$ P: p! K( N* K1 \+ I$ ^4 Q
set customer nobody' D: T# A$ r3 }) B5 @, d% v
set credibility-all n-values people [creat-credibility]# ?9 l4 }) b  ?9 r# c9 j: R# H
set credibility n-values people [-1]
0 W/ d3 ]  H( r# W. @7 Q% n0 tget-color; I9 ?; \7 M. O3 Y8 j

" b  ?; j, F% E3 aend
( s1 R1 ]" b+ a$ K; y1 @3 e7 X! U' j( U
to-report creat-credibility
0 `$ z9 x  J, E# B( a' H* kreport n-values people [0.5]
' v5 \# s* n( x2 send$ L' F; ~6 b% z8 U: l
0 w7 y$ r8 c4 X! o9 F
to setup-plots
. y0 M4 v- r- G! c! h5 [
4 o7 T/ Q5 b' w: P) W; fset xmax 30
. I6 `( R1 R1 Z& O: V: d: U
3 P  i, K$ Z4 e1 T3 j8 Z. x
set ymax 1.0

$ l1 K  v" U  W9 T' u8 k! O+ Y
- d4 _& V: l# e; d; t: |+ _clear-all-plots
/ r# |( x, B, |0 U- a7 S

/ w; u1 [" P" ~' Vsetup-plot1
$ U# o" Y0 o* `  x

* r" u7 o; I4 p: ?0 a1 A# C7 l  r4 E3 ssetup-plot2

, C4 t( I, x/ {) f/ E# V7 s  V4 p; l0 o& _9 A" `/ z1 j# \
setup-plot3
1 ]2 e% Y# ^8 l* c
end
2 ]0 ~/ ~6 [% _7 `* c* p/ S: ?6 e
, M6 d' d% @+ S9 I' D4 O/ n% }5 F;;run time procedures3 Y2 S, O4 _( ^( M
. P( k  _/ X; L8 [' a1 ~( E# ?
to go/ z) f  b" g9 j

& H. ~$ M6 I# B) V+ F( ?* x( \2 Cask turtles [do-business]

& w7 s8 O( h# ]8 A% y' g3 Rend
: H2 Z: V9 C) H: M4 k8 n8 w* a) P6 e7 e2 n
to do-business   D4 Y$ u& J2 v& y

6 N, L2 B% I2 B$ q/ }
9 s, H* p* A8 J5 S* ^! a" U( Vrt random 360

& {4 T9 x" v' \! L9 `9 @% Z
' g5 }: k) u0 y, n' }; Z: u, J0 i  \fd 1

+ q5 J, z" ~: Y6 I9 A% B5 ~' y0 m/ L) f9 ?. l! d
ifelse(other turtles-here != nobody)[
* Q: X0 q' V  U, z8 g2 I& w# p
3 f/ H8 P. d# l$ N1 a1 {3 j
set customer one-of other turtles-here
% H1 v- e+ f7 I! ^4 _, t
. ?# I: J1 |& ^% ^  l" _
;; set [customer] of customer myself
% H' S% R# |, n: j* ^
2 ?0 o: q& h- \3 A+ P2 V
set [trade-record-one] of self item (([who] of customer) - 1)
+ X7 @7 v( C$ n: {6 O[trade-record-all]of self9 B6 L' e' t: y  O
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

/ w! b3 R1 i; P9 Q9 _  b* w$ l) y' k+ h! ~
set [trade-record-one] of customer item (([who] of self) - 1)- n# O- l. j- ]+ ~% y4 w) Q" \3 q
[trade-record-all]of customer

; t3 N4 T. k! D6 b5 q  r, T
- e$ J8 G; T$ r6 N) xset [trade-record-one-len] of self length [trade-record-one] of self

/ C, E9 p+ H' j3 ]
' H2 \- \, |! ^* u& [set trade-record-current( list (timer) (random money-upper-limit))
7 i, |% D2 z. Y" O

9 H7 i2 Y/ g) y8 g5 @. Task self [do-trust]6 ~8 D" z: G6 C2 ]5 Y; Q
;;
先求ij的信任度
, o$ g8 i( D+ }  _
1 R/ W3 X- D2 c  f8 Lif ([trust-ok] of self)
6 H; e1 \9 S7 w5 _- J;;
根据ij的信任度来决定是否与j进行交易[* F9 ]" x3 `/ z8 J/ \) a+ u! y# `
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself# A! g+ Z8 D2 B% F" _3 v) Q

/ ?" G% q; c  E- {! k3 s[

6 z( P8 P; X& U' g; A' r
) a( m7 J5 W9 s4 g& i5 udo-trade

9 B; D! s6 \  P1 p4 z6 A$ z
2 \+ |8 v# p1 R; z+ R6 X3 |9 Wupdate-credibility-ijl
6 n% y- B2 W. c9 O

+ E! x1 Z: S- g  R4 [0 A: Z! oupdate-credibility-list' R# E  u- s2 r7 B

+ Q2 e- ?8 q- x! }
# T8 Y5 I, I5 b  @# }# ?# @* K; ^update-global-reputation-list
0 k. T( ~& K. P, `4 k& P

3 v2 k7 i8 J+ K( [: F  ypoll-class

% J& c( B9 y. f/ _/ b# b- h- z' Q  S+ D0 n
get-color

0 h0 p8 ?. Y! i# t" u' p; }  t4 k0 K5 z
]]
' K2 M! ]) f" [, ]  |+ X
) G$ X" D$ M, {% s% S;;
如果所得的信任度满足条件,则进行交易
' h5 `. N  S% n! z% R! i
) X# E7 Y- C9 Z$ z$ i[
2 l. p5 A# B/ F5 a3 x9 d
' Q3 \: J+ C, z5 o! w: g
rt random 360
/ a2 f8 R' P9 t( F( H/ q& U8 R- s& s' n

+ n$ o; \8 T( `# V& J# sfd 1
: Q1 P: c5 U4 ~! T; B: Q/ @2 l, P
- l) b% e4 W3 v
]
/ D' _9 f8 s' A

& a# j. R% A1 V" d* oend
7 W4 `8 u3 z- Z  w
- `9 t6 a) ^& {; @
to do-trust ( J4 }6 Y8 i  P# ~+ W- ~
set trust-ok False
- Z% s3 J0 ~9 c, X) {  C7 I6 p3 U' e" a8 _$ L

5 a; m/ y/ _0 O& R7 T) X/ Slet max-trade-times 0! f' O: {  `4 r  G
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
  y1 X0 y5 f6 k+ \* \let max-trade-money 0* p# v# h, j* w$ W+ r
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]% J* a6 ]' V2 |1 l/ W
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))$ r% w0 u; N0 R) ^" I  [  T) s8 P7 n

- m6 n  r! d  U: z- [1 w
/ ]. ?% ?$ ^+ y2 ]6 J0 F) H
get-global-proportion
" l0 m3 @  Z# A. t/ }2 T) U1 [; ~let trust-value
6 w) {" _2 z/ X6 `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)
+ n# b, L- w- u' F" b9 G8 x
if(trust-value > trade-trust-value)' T, v( `+ I0 ?2 h
[set trust-ok true]  Y7 R# D! @$ e  U1 `
end0 o' \. e5 v  e, h$ s" R

) W) n: N7 {$ a, Eto get-global-proportion/ Z* L. F5 o& I- O8 u$ ~4 N) b
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
' D7 X. D0 V3 |5 d, p7 T7 l[set global-proportion 0]
$ ~8 M% G3 x: n+ M6 l[let i 0
& E7 o0 q2 s( ~* tlet sum-money 0: j% I4 b4 Q8 T% Q" Q
while[ i < people]
' |" X0 U2 C% j( i( t+ |0 P[
- K& [; X9 v; d) W1 ^6 t* Y. Lif( length (item i/ [3 U, j6 t+ q6 _4 x
[trade-record-all] of customer) > 3 )
, x' r6 E6 O$ M$ m
[% X3 y* [! O9 f9 Z; ^
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
6 h# J; k0 v* L1 y]
8 ^0 ]7 V$ ?9 y, e. I/ @4 c]
! f3 Z1 @# Y" o, m- Vlet j 0" X) b. d% E' n* ^( u% \' {6 X' l
let note 0( q& e! ]5 y) |5 Q. K
while[ j < people]7 c6 f% i% d( E! s- l- y
[) E- y( Y9 r" ~' o
if( length (item i. _/ ]5 F0 I7 K
[trade-record-all] of customer) > 3 )
/ S8 b0 }" f  W, w
[
7 E$ q7 k# p2 h0 t5 [- D# f( difelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
5 E, Z  ?* ~( E0 _[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]* s' j9 P* E7 @, I7 ^# x* A
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]* |$ {( o1 m0 o: [- f. a% O
]
1 i. v) i3 e7 u7 z8 u% }7 i]" |. e/ {$ }- G
set global-proportion note
! `' a1 n5 k' ]( J/ K6 `/ c3 g; n]& G  `  r/ w0 z! G. |* Y
end
- }8 B  F' C# f& D* x
$ X7 s; d7 ^# c9 G5 B2 |4 P/ o. Bto do-trade4 o$ D9 J: N$ k! D+ ]$ o: |
;;
这个过程实际上是给双方作出评价的过程
& K0 W5 z% \! y" X2 W& H" lset trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
* \2 O2 L0 o4 U0 u! v' V  d9 [2 B4 {& dset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
5 c6 J7 S: ^1 g$ i4 N  Pset trade-record-current lput(timer) trade-record-current% g; d3 M% A( X/ n6 y' R& z
;;
评价时间
  ]1 V- C) z  D& [" ~7 Cask myself [
) ~6 Z, n, y1 [4 oupdate-local-reputation$ u+ y9 f$ q: H# m$ g# p
set trade-record-current lput([local-reputation] of myself) trade-record-current6 p9 d$ o. h: g; C& Q
]% M7 r' R, Y! |$ c% e
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
$ Q" u: K+ D8 Q  X/ d) ^;;
将此次交易的记录加入到trade-record-one
8 g  H; I7 q% O$ jset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
0 _# L  ]  [8 x' Klet note (item 2 trade-record-current ): S, Q" ^5 k! v; y2 v# P/ u$ A+ `
set trade-record-current8 d5 g0 G: M% j1 c; B
(replace-item 2 trade-record-current (item 3 trade-record-current))
) B9 |' m- t. \* o
set trade-record-current
! [. b" `0 m1 U0 y(replace-item 3 trade-record-current note)
2 \. r. k$ p1 R7 ?- Q
6 L: W" [7 C  R3 X9 a1 e8 u- x( F
: W) B! I3 W- }4 v: K8 C8 l
ask customer [" `( B' T9 v8 z. u0 j9 ~
update-local-reputation
' m& a4 V2 K) C% w  ?6 A$ ^7 Wset trade-record-current' {4 B% C4 x& d% Z* `1 P' R
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
6 y8 o9 a; I4 {' _7 V
]/ ?- H/ z/ I+ ^" E' y! A7 N% s1 v6 F
% i9 Y  t3 v: V: h* q- a, d" w# R# }
  z; u4 s$ \0 }2 G5 A
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
" K8 W2 V8 ?/ Y% }

8 l3 x) b9 k: M& Kset [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
1 L$ V+ r% A. {;;
将此次交易的记录加入到customertrade-record-all& |8 c$ e5 [/ Z7 M/ B$ F
end1 R5 N% T$ o+ U  V# x- `8 U  U

$ @4 Y' K$ }3 m3 C0 X1 a6 W+ Yto update-local-reputation0 T+ ]% o4 Q& d& X# |3 |
set [trade-record-one-len] of myself length [trade-record-one] of myself
3 C$ {3 r; h9 q% l$ X. m" Q8 B- b
  `0 r# o( E4 k/ z9 }% u3 @0 l
;;if [trade-record-one-len] of myself > 3

% P7 h( @7 i, I/ @! ?5 Uupdate-neighbor-total
6 _# }- E. R, E' O- E9 h  t1 T* f;;
更新邻居节点的数目,在此进行
. k0 ?' `* E+ ?6 }7 flet i 3
8 ^- C' l! I, C; s* wlet sum-time 0' y& n5 X" V( ]1 S: i
while[i < [trade-record-one-len] of myself]
% Q5 b0 H9 n1 ~" K9 y; Y$ D9 A) B[
% i  b& B3 r1 I2 @) I4 @  jset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )1 T  {& I( P! ]( T+ b! {1 W& U
set i( h0 X% [! Q2 t0 F
( i + 1)

( Y/ ], q" A1 H+ L" r* Q* f]
8 `9 o1 U0 |" w6 t. Q( `5 M1 hlet j 3. {! n' x0 C( m9 F. p" u6 }
let sum-money 0$ s! P* s0 `  O# ]
while[j < [trade-record-one-len] of myself]
' n+ J) m% e% d# E[
* K. t! `, d. B0 B/ r( V% w4 Cset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
1 E) A4 S% h% g6 x3 @- eset j
5 B  N* x+ I5 z$ m- |2 G( j + 1)
$ f* f9 i1 S+ z) U0 T  v! V2 X
]
2 [. H/ ^* _/ w& Q. O- u& R6 F7 hlet k 3. V, M3 F9 P& Z: c5 O/ X
let power 0
! X/ U7 v1 r0 j- Plet local 0
& e  o/ U2 s7 c5 w, q% v$ Iwhile [k <[trade-record-one-len] of myself]( V; O# `$ d. ~2 p, n
[  Z9 W& \8 V, N+ A
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)
& |2 Z/ r. _9 P/ Qset k (k + 1)  w6 Z! m3 q# E+ _
]
/ y" M8 A- V' {) U% Lset [local-reputation] of myself (local)
& I$ K* }2 d9 F9 C8 h! q& zend; ]9 Z5 G/ r8 v1 g7 }7 T) |# z

$ }, \: c6 w! I. V' {. j/ ito update-neighbor-total
4 ?' s  e9 s$ J, r. ]$ [0 x$ q
! A. ~! j- v% h4 |if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
' L5 b: c) o7 N9 x9 P6 J" l2 k% J) z7 s% m4 |

* O& r8 s6 B9 i  u0 \end
, N# b" b. N. z6 Y+ z1 h
# `# [. M! N, h+ L( Nto update-credibility-ijl - W3 S& ~! f$ T- T. }8 v) Y/ b
1 b, c+ W- ~5 B  I. p) L3 E
;;
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。
0 a' Z7 z3 u0 c/ J6 _let l 0; K1 A& o. y3 y/ P/ j
while[ l < people ]
$ y  j- a6 v- U# g;;
j的邻居节点的trade-record进行扫描,以对j的邻居节点的评价质量进行评价
+ b" C5 e; Y* `  j9 a3 G1 \0 b7 D[2 \% n7 W! S4 d* j8 i- r. m
let trade-record-one-j-l-len length item l ([trade-record-all] of customer)6 }2 D- F6 K, X) H
if (trade-record-one-j-l-len > 3). u2 ~4 i. n8 n  R# ~0 b; d9 E7 b+ G
[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
% u  [, ~- J  J9 [let i 35 q* i# h  B3 O( g% S
let sum-time 06 E, k- p( k% u- A+ U
while[i < trade-record-one-len]
2 V, L% }3 r3 M[
6 ?6 Z6 q& Z& \5 L8 V6 y9 bset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
4 ]$ h& U6 q/ `. Yset i$ t! e0 p9 J  n! W0 G
( i + 1)
+ x$ l; b- A8 U$ D" C# f
]
2 G. E% G6 j2 Y0 glet credibility-i-j-l 0- Z0 f" `3 f3 e$ _
;;i
评价(jjl的评价)0 @* L  V5 @* ?0 \
let j 3/ ]5 U+ }3 S, j/ G, E
let k 4' H8 z& W  g% Y$ N8 @+ O
while[j < trade-record-one-len]
: z$ s3 [1 H0 t3 Z, e' `2 a; X[
- G- W8 U: c) J1 a0 M- Uwhile [((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
  K2 ~6 c  ]! a! M- @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)/ P: Q: L8 Y$ s' G4 U" L
set j! ]1 ?" V+ f4 x
( j + 1)

% G: i! r2 h& A. d% \# _8 K' l]
; A/ e+ n- Z+ _; @) E4 T4 [2 Gset [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 )): D3 E( @( e% [

3 W1 D% I' ~- m/ n! B5 Y# J1 Y

2 o0 ?& Q0 |% L' B% }, F7 nlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))/ `4 T4 I5 w! U, Q0 p% s7 z
;;
及时更新il的评价质量的评价) f9 P/ A; C" n
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]
4 y7 _( O" N8 ~6 S6 U* q4 i7 }5 Oset l (l + 1)
$ N" D) @# `2 B* q& Y]0 t6 e. |! C% V
end* ~2 q8 r1 L) H. n( E; G
% @4 Y' x0 ?+ R7 n/ I
to update-credibility-list. d2 m" g7 C* B
let i 0
9 {2 L) X- h6 M  T. z( @$ nwhile[i < people]
) |# y" ]6 _- _0 c; r[8 s+ l6 y+ ]* b, S# l% Z
let j 0
: [5 u) e' ?6 ~& q# }" A( f' ^let note 0& s# a# [9 g8 X  }
let k 0
8 E8 S+ v9 [, v;;
计作出过评价的邻居节点的数目
2 L* d7 \) W0 Q! F7 Hwhile[j < people]" g( L3 K/ z, Q8 X6 M! @8 ]) e' _
[/ f3 i5 K5 X: S
if (item j( [credibility] of turtle (i + 1)) != -1)) }- |# S- h8 p2 W& Q! j6 E
;;
判断是否给本turtle的评价质量做出过评价的节点
6 ?/ i0 b) C- d. u! S% E: p[set note (note + item j ([credibility]of turtle (i + 1)))+ [! N! g# B( ~8 n
;;*(exp (-(people - 2)))/(people - 2))]

3 V' l0 B* \# B3 s/ h+ wset k (k + 1)6 U; f7 g+ x' X! O, q1 q
]
8 Z" v7 x% r5 Mset j (j + 1)* p' |* `( g3 S: L$ `
]0 y1 [, N+ K7 s( k( i( E
set note (note *(exp (- (1 / k)))/ k)* Z2 g7 l. V" |, }& r
set credibility-list (replace-item i credibility-list note)* W# M- f' R' h$ Z) Z
set i (i + 1), @# V; z4 ~, W* j9 [
]( T5 d$ {2 q1 Z7 c
end: D+ S4 ~- G# {7 e1 q# i( {: w
9 n$ t+ x1 y: `& H" f
to update-global-reputation-list
0 p4 s* j' T$ Z* j% s, {let j 04 V2 |2 Y! `; `; S
while[j < people]) n2 ^7 W0 B! O$ i( o/ B# M
[9 Q  h+ }8 e- e/ y
let new 09 l1 |$ K2 x1 L& K9 ?* F" ?
;;
暂存新的一个全局声誉
7 r1 z6 B$ d) @1 _let i 0
7 U4 m; g7 s: @0 `/ _2 p3 {: Klet sum-money 0
( @. r# Z, N6 G' x" Dlet credibility-money 0
9 X0 L( O5 F) L- K3 iwhile [i < people]
) s& p0 u5 a6 F: L8 @# M[, S: C/ j* N9 L4 h. k! Z0 |; e
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))6 M5 r6 v8 c/ a7 W/ j
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
% q* S  p8 k- Y3 L) Uset i (i + 1)
& i6 r! [. o5 K6 n$ v0 f# k]5 m9 A2 Y5 P( B
let k 0. I" c- u  Q' q0 R
let new1 0! C( R! K  f1 `& D. I: F8 \4 \
while [k < people]
. ~! w7 M, D* D5 i5 j[
! [* T! a# e1 B5 \( o2 iset new1 (new1 + (item k credibility-list)* item 2(item k [trade-record-all] of turtle (j + 1))* (item 5 (last (item k [trade-record-all] of turtle(j + 1)))) / credibility-money): {( J; _% }1 y9 N1 p$ B+ l2 ^" E
set k (k + 1)
/ j2 o* A, R! x0 B% x) [2 b; L# b7 g5 h]+ A6 H& a* m1 p& T% [9 P1 u3 D* h
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1) $ c' V9 k. C8 h
set global-reputation-list (replace-item j global-reputation-list new)% Y  ]* d" d! n. }
set j (j + 1)
3 {+ \) i! B1 P* u& O& @]
+ D* G+ V. K9 d, I8 l7 E- ~end
2 e2 Z# O$ @& A$ @: k4 O( O! ]2 Q& R/ ?, ?9 z. M' `8 k
8 x3 L; e3 P) \! S' d

' S. _/ H! E4 v! ~% kto get-color
' ^% V; J1 ?' a9 V) e' m
( l$ e+ x1 r+ ^2 V2 iset color blue

4 p  `6 q* q- N$ L8 W# o+ Z" I8 x- ]end% U; K) a' }/ S/ V+ u( g( H/ E& m

7 r& ?: M4 u8 @3 s/ j' O& z: `/ a" }to poll-class
2 o- |; t9 y# V$ eend
1 p1 f& V- T$ W6 |! @" L
* L  A  [* J+ n% yto setup-plot11 X6 v7 E8 `+ D: e3 ~7 b

9 m' \& |5 H2 Zset-current-plot "Trends-of-Local-reputation"

8 e2 T) d/ |& V( v( q2 \- _8 V$ L4 n+ t" M9 f2 o0 @+ h1 i
set-plot-x-range 0 xmax

/ V( x/ U/ Q# n* P; z; C
) T' D! a% [8 X3 fset-plot-y-range 0.0 ymax
$ S! M' N7 k/ [2 Y3 J
end
7 p2 K) Z" y* G  h6 s
& d+ r& n! I1 |  F; rto setup-plot2
& l3 A( j. K9 i/ @: s1 L1 Y
- s  V1 G# A6 }5 x/ l9 M8 b; {set-current-plot "Trends-of-global-reputation"
; X& k/ S5 N( M; K2 s4 Z6 I% d

6 M# v1 k* T  ?! t: a/ kset-plot-x-range 0 xmax
2 X. X; W# X# f) h7 k" P
5 [5 C& H3 G8 r
set-plot-y-range 0.0 ymax
) B% q/ h6 {9 }* i% a4 [  V5 C
end
( w3 I: l( Q3 y6 H. @. p% i: D0 [4 ?$ J+ `( E/ `7 o2 i/ M/ F/ z
to setup-plot3
0 k  e, F. I) _- Y8 S1 }5 S- q% r$ Y
set-current-plot "Trends-of-credibility"

# [- ~* A6 }. M. |+ }1 G# |
& a" p6 a$ @% ]: H2 X6 h0 Rset-plot-x-range 0 xmax
) h; ]/ T! h! A  ]  {
5 m3 @# w9 \/ D) R5 t
set-plot-y-range 0.0 ymax

$ A+ g! f( S% w3 [! ?9 H5 send
% s. b5 L1 `/ K5 h# S$ G  ^; w
0 o/ H0 ]+ g$ z! e8 U7 ^! Ato do-plots
! R6 D! Z1 {2 E$ U  K# K4 [2 mset-current-plot "Trends-of-Local-reputation"
5 o8 |1 G5 [. m7 p3 jset-current-plot-pen "Honest service"
. {% y2 X; z% ~1 ]; g1 t6 Lend
, }& u) y" e" |$ W/ t( J/ `6 i9 }. f4 o( }* ~
[ 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.( G7 D* Y' v$ B& `0 F) D
; t, I/ x; Z+ s
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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