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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:4 W9 v" K) Q. ?3 s
to do-business
+ Q2 e1 V0 Z) a# M, r% y rt random 3605 W2 e& X% y- O0 j
fd 1! I4 M7 u/ [+ E, W
ifelse(other turtles-here != nobody)[% v5 C& E* k% F. L/ |
   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.% H8 Q% c% X$ l" F$ c* l/ v2 _
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
- [$ S- B  `4 z1 G) h   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
+ G% C) g) b! [  W5 h& {   set [trade-record-one-len] of self length [trade-record-one] of self
; k0 q1 {8 }, g4 h8 X& w2 J  N: `- O   set trade-record-current( list (timer) (random money-upper-limit))6 J1 |" z8 g& c. ?, C( ]2 f$ m

* w" c8 W0 N4 }问题的提示如下:
' o1 K+ s1 |' N2 T- x9 P8 W( _
* P) _, O! o- `# M5 ^* o) s9 Nerror while turtle 50 running OF in procedure DO-BUSINESS7 b( C% \& E- u8 o( E& C0 L
  called by procedure GO; K- N% O; N2 c# f! n" \
OF expected input to be a turtle agentset or turtle but got NOBODY instead.) a( V  [, ?* S7 E* q, F; q
(halted running of go), w3 i; f/ U- B. ?

" A5 _5 }3 R& p8 T# N" ~7 \' f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~~, u( g8 i9 m1 T* k
另外,我用([who] of customer)来获取turtle的编号的方法对的吗?如  set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    中.

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发表于 2008-3-17 17:34:20 | 显示全部楼层

资料不全

你把你的所有程序传上来我看一下,估计不是大问题。(南京大学)
 楼主| 发表于 2008-3-18 13:10:54 | 显示全部楼层
你好,这是我现在正在写着的程序,以上问题就在其中,请多指教) q- u8 y* }0 `; V4 m
globals[- ?" t0 R' v* o4 }
xmax3 {0 }: ]7 {9 S6 H2 t
ymax
+ ^+ F. B) K1 n2 y; iglobal-reputation-list7 a! a' e0 Q$ O' y. v! K

9 v5 b* U3 j) c" a# B  t6 s( R% ?;;
每一个turtle的全局声誉都存在此LIST. M0 c3 ~" F4 y4 v! b7 Y6 i
credibility-list
% R0 |- t( Q) n+ B$ Q% H8 q' W;;
每一个turtle的评价可信度6 d2 k' V9 x. C- A# C
honest-service
3 z, n5 ~+ e& x, e. J& L, p, Bunhonest-service
7 f7 o7 K6 z: `8 loscillation& V/ R- p& \' l( M! Z$ W2 h" }
rand-dynamic: Y3 K' P! W# l3 F
]! O. n: y5 M2 Z& K5 \1 d1 r- F4 i

/ X4 M( m$ f- [) G& mturtles-own[! o9 Z/ R5 h, J2 o( S
trade-record-all
& s4 }; `1 E, _, w;;a list of lists,
trade-record-one组成
3 p6 N, O& [) ?- q9 E% atrade-record-one
$ u; `- H" k' [+ q9 z+ X;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
9 h0 A- U2 c  H& e+ |; J' c" z# Y3 P! H- P% n/ h3 ~0 ~
;;[
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]]5 c0 `: Q( S8 _/ L4 {/ a
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]3 O7 M# ^* c) M6 W7 q
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
5 W6 C( |' X/ C9 ?- f" Jneighbor-total
% @) a( H& b( g/ B3 W* v$ J4 D+ t;;
记录该turtle的邻居节点的数目
4 T8 m) O- r8 V# Q1 Z  [trade-time
( Z$ r! Y  ?, j8 |$ Z;;
当前发生交易的turtle的交易时间9 M1 K* U% Y6 {+ C; y
appraise-give
$ r5 h0 j: A" n/ |;;
当前发生交易时给出的评价7 V3 R; L% s% w: V5 P. T. k
appraise-receive
7 r1 @# b# V$ t& ^. w3 w) ?; E, V;;
当前发生交易时收到的评价
# Q* q! r" l; g9 Y$ }' ]appraise-time7 t7 _2 X  u- c$ D/ |4 I0 C
;;
当前发生交易时的评价时间* i, Y! L9 t) U9 h: P
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
! p' E9 G, O3 ~% ?trade-times-total
& e" D" o7 n# w+ }% E;;
与当前turtle的交易总次数
2 t0 `) n& i4 d$ f' [8 itrade-money-total( m! z! A: |4 e  G5 X" q
;;
与当前turtle的交易总金额
: I5 s% W! S4 tlocal-reputation" e) C7 t" B4 K, l2 |; W* N" R( R
global-reputation: ]7 d; ?9 F1 z6 D- H7 v
credibility. e% Z; w4 i/ u: {- n
;;
评价可信度,每次交易后都需要更新
/ F8 H6 T; y- {8 ~3 t' K. i1 A* Hcredibility-all
' z) k6 c, C' {4 e;;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/ l0 g  U1 s2 @/ X7 f
1 ], N+ h( a9 F: ~4 P" z
;;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
0 I  t9 T- }, E( f9 ycredibility-one) F3 j* h0 h; B1 w: o9 o$ p
;;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. s, I# [- G3 B: b6 D8 B7 b
global-proportion4 c  A8 S! f: y+ p# M  a
customer* ]: \8 {: h! x  W. B
customer-no$ b8 o- P8 D. h/ n8 B. R2 N
trust-ok
9 x' T* @* M( U6 N4 Ptrade-record-one-len;;trade-record-one的长度
% U4 l. I& T$ ~" g( \$ ?" o1 w]  V8 ^% A0 J$ @! V4 V/ L
" E9 j' c& A  O+ t( y) k
;;setup procedure
* g) ^9 \, r# x4 \: H
) Q! z7 v2 ]% j7 G. W& ]to setup
; m) O+ u' R5 q& {6 P# d) K' h' q: F7 X& f5 e! p* ~4 S/ i! L
ca
. e" K1 N8 ]' M
) q& g: J$ G, e5 [! ^
initialize-settings

- w  T9 K* E! z9 H0 T
8 H- x3 Z5 z; z* k5 E% W! hcrt people [setup-turtles]

+ y7 k8 h  S6 k! i/ [, O1 p6 @5 B( B9 ^8 W9 M* j% s5 ]  i
reset-timer

7 g. D! U3 G3 f, K6 Y4 @" p3 T( J- c1 e
poll-class

9 X) D$ |4 o( _* p( R  ^
" Q3 ]" h/ ^: J: Q9 G: Vsetup-plots

* ^# ^* ]6 @- t8 \' W5 K( h3 ^6 ^; D4 q2 i8 q/ I, B
do-plots
) s' s6 i; ~  n3 Q6 h9 O9 N6 ?4 P
end8 \$ G. r3 J. p

9 G  [7 f; c! U# p) vto initialize-settings& Z' t( j" e7 }7 U- q( i

1 K1 @) a! {0 c  Lset global-reputation-list []
1 ~* P& J4 O' w6 C$ v

0 v# @  A( t+ h# e4 J# Fset credibility-list n-values people [0.5]
0 ~6 l. Y* ^. m! u9 j
( N  r: h; |+ t# ^3 L2 X
set honest-service 0

+ |, E, n# Q/ S+ P/ b) ~# V6 d+ E5 h# f/ Y- c) a  O% _5 ^9 x
set unhonest-service 0

$ D* T8 y) a. F8 `4 r" R0 H# A2 W8 F
1 w: a8 i  @5 s! h  l7 Aset oscillation 0

5 y) l3 t3 r' q% ~7 }# \: \
2 \# d! I: o+ s! `3 hset rand-dynamic 0

( |5 I) h$ a. Q+ b2 B  [  o3 G! nend
- h& C7 A2 c! B5 X, }0 y
* \( e2 b# c3 x9 B  ~+ U: Wto setup-turtles
7 i% i% Q1 l  k/ Aset shape "person"
, e, u% ^8 N5 fsetxy random-xcor random-ycor
$ v) j. Q! G% i- _set trade-record-one []( A& p2 U( P1 p( I
# N3 P9 c: z3 g, @7 P- t, I: c
set trade-record-all n-values people [(list (? + 1) 0 0)]
" S3 m2 o8 N: H& ^* \" |/ n

# R* X9 U1 `; B  r; Hset trade-record-current []
/ K. i, }, n9 D" w4 Oset credibility-receive []& i5 _) N9 Z- t
set local-reputation 0.5( a, m+ l7 C0 U. a4 Z5 J
set neighbor-total 02 J  Y4 ?0 v1 F8 i
set trade-times-total 0+ |  [4 @+ u  B! n3 V  O9 B& |
set trade-money-total 0
: z% |1 i# d7 o9 v' m$ O; uset customer nobody" v. E3 K4 ~" g- ^8 T
set credibility-all n-values people [creat-credibility]
; L6 U2 P  b: I5 n( Cset credibility n-values people [-1]
% U# H3 l1 Y' `& Nget-color
7 [: G( N& F4 o& l+ Q  U/ p
0 a0 o/ ^! C) t- l- G
end
/ v* u- {/ Q) E8 w
' W3 o* H  u& p5 E* g. bto-report creat-credibility6 N6 h  Y4 g( C* Q# t
report n-values people [0.5]& ?. Y) g& G) o5 C
end4 B' m3 p! A' ~0 Z
9 C" M% c" _7 U$ E# h- P! }1 v+ c* K
to setup-plots7 B$ e# u8 y& u& w( ]

7 [+ L* Z/ y' u% V  g2 y( ~set xmax 30
8 ^+ H3 \/ e& b. q

- t) n6 \+ W( l) \4 S( p8 e3 }set ymax 1.0
2 C* B9 D1 I2 F6 {$ I( K, R
8 |: d" }  K! G  Z
clear-all-plots
9 i7 c* A# r, ~) l7 ]0 ~8 S' C

  c) N& H$ |  P8 z8 Lsetup-plot1
5 C2 \: e7 E" l6 O/ K. y6 g7 d5 b
6 a6 M, B! q# E: _0 }
setup-plot2

% q9 h; e8 Z+ m3 w
  }, n0 r; @$ H* v" A3 Gsetup-plot3

3 g7 u& Z9 H4 Xend
% |9 E9 B% {0 k9 d! a! S- X& {* `9 x( `- P2 ]- m# e
;;run time procedures: M# b0 X& u5 {+ U- D9 z3 _

! G% E1 l! D9 hto go
# r5 |" o5 Z' K. a3 v9 |
4 b3 z7 T7 L/ q) B, |9 m$ [" m1 n3 iask turtles [do-business]

2 P" q7 a; e) m# b  P( `2 ~end) ^" b! s2 x: D% \) b6 g5 C4 E
1 b$ [9 C' ^' F" |. R$ y! s. F
to do-business * ?0 C, S3 W; [& Y  p. f
2 U9 b5 Z. q  [/ l0 ^% [- B

. A7 c7 e/ Q! h; v) `rt random 360
) {6 u& d0 Y4 c* P1 M$ [
, }: p: u& i$ _
fd 1

8 T2 \- T% H8 Z& [: Q* |6 ?4 [# L. h- A
ifelse(other turtles-here != nobody)[
# a$ t8 E& c/ B3 R6 V$ s, B) O, x) x

7 b9 E" c6 }- a' A1 ]. A& Z# uset customer one-of other turtles-here

; ]! w* n/ H+ j% F% O# @
6 m, k' M! m6 S3 B% i9 B- b;; set [customer] of customer myself
! X, t7 `! a& K! r8 o) M$ b* v+ E) _

, q: D' ^  |% Mset [trade-record-one] of self item (([who] of customer) - 1)4 s2 p" H( z8 p
[trade-record-all]of self$ ^! I2 Z/ {4 K6 b
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
+ P6 Z* {# {, X, R0 z; K; V

2 d" K  h+ m4 t7 G* u* Tset [trade-record-one] of customer item (([who] of self) - 1)
3 }1 f: y2 U( x9 K% y# p[trade-record-all]of customer
* U4 U/ y: q4 H+ r0 g$ F6 h2 u
. s- r. ^; F8 D1 [  W4 [' L, N8 n
set [trade-record-one-len] of self length [trade-record-one] of self

( C' M2 r  @# U( P" o7 L) `4 @: p
set trade-record-current( list (timer) (random money-upper-limit))

9 t7 T) U- Q! {7 w! Q6 u$ T" b* E
! M; ]" u- Z, w' Dask self [do-trust]4 z, u) w" ?9 g2 P
;;
先求ij的信任度
* E4 H3 |; ?0 e: Y% m8 ~6 L4 A2 x' V' u$ X& P( [( T
if ([trust-ok] of self)
* s& C6 W& P3 W, u" y0 \9 f;;
根据ij的信任度来决定是否与j进行交易[# V# g6 S2 ~* r; e8 s. e  k5 f
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself1 j0 i. t$ U2 o% U* U( O

6 D7 y7 H  V5 @& P$ |[

9 U1 O$ M- @+ V0 Z
  S1 Q+ M( ^- M8 ~5 h. m: h) m- sdo-trade

& V5 K3 F9 g8 n
6 B" m& f* D! A* R7 g. p$ H/ J2 rupdate-credibility-ijl
1 }6 A! g2 n' y+ u' ^( l, Q

) u0 ~- v6 {; s( a3 }/ C8 qupdate-credibility-list
- P4 s3 f, R) R/ _: d; N
- J# a, x: L  W# r
) Z& m* Z/ p$ ~) d( o
update-global-reputation-list
" x5 I8 Z4 [! U' Y7 ]$ c4 ?9 s2 B
0 B4 I8 s6 E( }: T2 {
poll-class
& w  q/ f3 D* E1 e
& {, `1 D: e4 W# M" S; o! d
get-color

- j; z' H3 D0 [" k
$ s* V6 M+ f6 H]]9 R' e0 G4 ?9 [/ G6 F$ @

8 N' `- s& y8 P7 m. W/ L4 r;;
如果所得的信任度满足条件,则进行交易$ ?) s( H) N6 e: w0 h; N6 h

  R4 ]7 k6 P- ?[

; g' K( a: Q3 Y% a( g5 ~- O$ j2 K) _3 J4 @7 B; x
rt random 360

4 L  N5 @6 ]6 Y; k4 Z  r6 `2 G
8 T9 K$ S3 ~/ F) e3 Ufd 1

5 Z3 x6 O7 d: S# j9 q) D* _& x* B' @0 F: X
]

+ B5 c& n# l1 m2 \, \! Y0 N; l, z& r, A, A6 n" {+ R$ s, k
end

, c/ N/ ?; r# K; a1 E3 q1 @# m1 Q* |1 [, u' C
to do-trust % d; e3 E0 Z! l1 E1 h
set trust-ok False
, b, `) v. t$ Y2 P
1 Q! R( j( Y6 Z" F
9 [8 b" m2 Z0 S# I6 U& |
let max-trade-times 0; `) z, O  w) y% d  H. \0 c  L
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]! b1 [5 Y6 l4 o0 v+ F2 N
let max-trade-money 0
" r% p3 J9 F) z- \% ^" a$ z( g% Y: bforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]4 u8 P' Z4 U1 F& ~- F
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
* }/ Z  X7 [9 |" i$ a% P4 c+ B1 ]- l6 J- ]- Y& i/ x  y; T% C) U$ O

9 b9 L: D: t: f( O1 F0 Q2 xget-global-proportion
1 t- C' D4 A, w  R% y' tlet trust-value
& H, T; O: r$ [+ l, @4 g0 rlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
0 K5 m1 I) H' h  C
if(trust-value > trade-trust-value)! q1 p$ [5 m7 i( P! P3 j
[set trust-ok true]' G* g4 K& Q3 E) X7 J$ k
end
8 W- N( }' n* y8 J& [) A8 v
" |3 s+ p* F/ l0 C" M% G+ d4 Tto get-global-proportion
- r5 {- H5 z4 A2 _ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
% h6 q$ P1 @# o+ `. i1 [$ [' t[set global-proportion 0]
8 r; y5 \, Y$ h! [; |) }7 v* N- [[let i 0( T8 m1 p% `& ?# M% v
let sum-money 0
/ ?! d$ v: y4 Zwhile[ i < people]
3 {9 z5 V1 R7 |6 k[# t, X2 d0 n. X: U# v) k' m# a
if( length (item i' M5 C+ I$ d  D! t1 k2 @
[trade-record-all] of customer) > 3 )

- a/ {/ E$ f" ?! b[6 E$ M+ R* b( C, Y2 W
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))
1 i( `' ?+ L$ ]]
! Q! R& H4 I, ~' \]. n* m3 p8 b6 ^/ [% {* d
let j 0$ P" b' q3 a+ X* w" t
let note 0
3 J# G0 A( X: G8 C2 \4 a% @& ewhile[ j < people]7 V& R3 e; D& O& ?6 n- s6 d
[: n, d- D8 H% U  r
if( length (item i/ N. }& i& a& u" }4 l. d2 U
[trade-record-all] of customer) > 3 )

# w1 I) l* T+ I- \[
0 T! k5 m/ f, s; i, D1 t9 o$ [3 eifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)3 }- V$ h( i6 X) H& N4 P4 Q
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]
5 K9 P5 e4 A6 v& _' \" ?[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
' g' W6 W- }) U& e2 R; h]8 ^* T- W# `9 G  M
]
, b! j! ^% u, C/ W! nset global-proportion note
% }: |. |- v$ g5 d; v! N]
2 N$ B+ V1 u2 h7 ^# Y8 }: U4 Cend* z  i% c' q2 J4 Q  T
" h% p! G6 }. U! s' k) d$ _  L8 t
to do-trade
; A- b- D6 _' U' U& }$ r0 y* c;;
这个过程实际上是给双方作出评价的过程8 P5 b3 U- M" v5 N
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
0 W" ~/ `. ^8 V2 G9 F8 v' e0 Aset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
3 w# G; f: v! t3 T4 xset trade-record-current lput(timer) trade-record-current( f: j1 I% O6 e( g
;;
评价时间
  H# j; F# x0 w( U+ D$ S  B5 Gask myself [- R% G5 @0 o' B; E! s# z5 I
update-local-reputation% ^, e; k% `: Q; t  t
set trade-record-current lput([local-reputation] of myself) trade-record-current
9 A) x( ^1 t" t& s/ F, K]: Q& V* s# [" W) H/ Z4 J
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself3 A1 K7 P7 j2 f* Q, Q2 V
;;
将此次交易的记录加入到trade-record-one
9 O8 ^1 E9 J6 u$ Eset [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)* L( D* c6 y( r$ }2 @+ C/ `
let note (item 2 trade-record-current )! h8 @6 V) o+ O% N( v$ C8 O2 s4 \
set trade-record-current, ^+ `$ {1 A* A# m! a2 ^" O7 }
(replace-item 2 trade-record-current (item 3 trade-record-current))
5 E- T4 b+ t( a6 J
set trade-record-current
  d: A) i5 B) r& D  a: X(replace-item 3 trade-record-current note)
* B+ E: e. r# c# T0 S1 s! B0 N- n% H( A2 D! N9 S

3 ~" Z  Y2 L# r9 u" s+ q4 m" t: B, Pask customer [' A- f/ B  M# S: L
update-local-reputation
2 `# r7 G) ^% E3 F* Q& `set trade-record-current
. P; R0 {  M( ]) T(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
5 S9 v4 m) V; q* z, d
]# a' h$ x6 n' {9 s/ D: @

6 ?+ o7 C* l# f& B
( F* t$ C6 Y/ R' H: f
set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer- V8 C; p. c$ O9 [0 J' O. Y& E* d% a7 k
4 }$ K4 W& V9 i/ Y# C3 Y6 L
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))
# b8 B+ [/ d$ _; [) F0 u;;
将此次交易的记录加入到customertrade-record-all- ]7 Z- C. H: G* J
end' S" R* O+ }: l' t: r! C. I

( s+ f0 f1 _4 \7 Sto update-local-reputation
2 @: d9 I4 F6 N6 fset [trade-record-one-len] of myself length [trade-record-one] of myself
& B# `/ Z7 R( C4 ?$ l% L( K9 a9 \7 w0 L3 P+ U
3 p6 Q9 S3 `- u6 o* A
;;if [trade-record-one-len] of myself > 3
7 w* k( C$ C; g+ u8 _9 N2 O$ W( U8 x
update-neighbor-total, {3 k/ x* n3 P2 I
;;
更新邻居节点的数目,在此进行
$ ~& f& }) T: T  G( R- ^. @) u2 hlet i 3
! l# i: @' k3 F+ w& [* G- nlet sum-time 04 P$ D5 r- ]) l7 X- v
while[i < [trade-record-one-len] of myself]
5 w" n/ e$ K9 t8 _' `[
- A) m. \! C' ], [; V# Mset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )/ C0 x3 a  j. V$ ?4 Q3 `
set i
' _' U! K4 J; T# N, ^( i + 1)

# ?& b8 R  ]5 Z9 [; @# Q  _]
: K& Z) \0 \" z0 v( _" c: Alet j 3
0 B- Y% a$ l" rlet sum-money 0) e! J& j& c/ u2 I1 z! w% c: h. f
while[j < [trade-record-one-len] of myself]' u" o+ a" c, t* }$ h; y9 N, e
[- g' H, a, O# 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)
% Q: C7 o3 C8 m; y2 L: ]; T( Y4 \4 fset j
6 W& Q- |' w. y. v. V1 w( g( j + 1)

2 h* M# F! ]) W6 Q9 N]
( k( Z/ I8 b7 F4 |let k 3' u/ T; S! f1 f1 J+ L
let power 0/ z2 C5 z% q. m
let local 0. v$ @5 S" I+ Q
while [k <[trade-record-one-len] of myself]; H8 Y$ F) ?+ e/ t- M1 s, A
[
! L* s: E1 ^( A2 f8 Sset 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) / L9 H5 l8 k7 E* a! r
set k (k + 1)) ]; q2 k: s& l$ b
]
% x3 x- k' O2 Q+ a5 gset [local-reputation] of myself (local)+ @& S$ V6 b9 D0 }4 l6 }/ |
end
0 C3 L" f8 H$ B. Y: D" I+ V
+ X% r* C! G/ U  Z* _to update-neighbor-total; z0 u! D& r' z6 w- V

4 I3 d9 L6 ]% {: t0 Yif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
  z& ~5 n* ~5 v4 {. W, a4 I2 h; d: U& K2 u! s; I6 U

. g$ h* z/ b3 Q% s5 Qend
* }0 k% o$ I9 g' a  v: {
/ R6 T7 |0 M1 T) Yto update-credibility-ijl
' t  s) E5 D* g" ]' J
2 y9 |, l6 l) f5 j- w& U;;
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。
# ?* m2 x5 o8 _8 }  \# ?& xlet l 0
6 |# w% x# `2 a$ [. `5 J$ {( Qwhile[ l < people ]
* |6 [/ C6 {, k( S  r; |$ o+ W;;
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% n: W' V7 m, I8 P3 z5 J. x
[
1 Z* M4 O% x+ Z. G2 plet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
% l& r, B4 x7 @7 A8 Z# X' Fif (trade-record-one-j-l-len > 3)/ I' N2 B& Y9 ]# M) P- I9 T
[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+ y# F% w$ w) q& L% G
let i 3
6 U, p9 m/ u& p; N2 I8 ~let sum-time 0
: l. E3 i, d) s/ \) ^0 _# K0 i" Swhile[i < trade-record-one-len]; [- U& R$ A* J5 b# n
[' v+ k/ Z! c% A$ R) R$ N$ G
set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
( V( ?- f( R4 yset i
3 K; W' e4 R8 b3 \" I% M+ i" g7 ?% \( i + 1)

& ~7 }% T5 I" n! ~5 O]
/ K% ~& D) v0 q5 flet credibility-i-j-l 0
  E" k! ]' `4 [8 O4 m# g6 k! [9 Q;;i
评价(jjl的评价): s& @, H0 ~" q( {" l+ B- ?
let j 3) I& a& H" r; ?$ x' b& F
let k 4+ p- C3 m4 S) g0 ?
while[j < trade-record-one-len]. q9 p$ B) V+ v1 f4 {4 u
[
# L. J. M: r) ]  U: x+ B/ v0 u; zwhile [((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
" W1 n$ H2 K$ g7 K. g% ?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)% B4 ?- i% M& T# b! l: D: i
set j
4 ?& s( U: i6 K7 a& f0 V( j + 1)
) D- G) p0 @  H5 v1 B: O( v
]
& ]2 U" A! h' N' yset [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 ))& o5 [  }3 ^0 I& j

2 a/ I. H% v9 j! ~# s$ ~

& O) \) }( u. N" zlet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))% F( O8 j) g9 m
;;
及时更新il的评价质量的评价
$ u& A$ D  {: \- V( K8 tset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]: ^9 Z/ |+ E7 z' r$ @
set l (l + 1)
2 P2 R& i- @" {6 N( R9 F]
1 M7 w6 k/ e; f7 K4 }end
9 ~& v" f% ~) D- s
; p" w% J+ j+ h4 P5 T% O( L; J; vto update-credibility-list( R$ o* |( V1 ?, B  m
let i 0
# y& }; b8 H) awhile[i < people]
! J3 r) E* ]6 ^! a3 C[
4 A  G$ ?" f+ o0 xlet j 0. j1 d% E9 z& Z  u) g
let note 0$ P7 n" w  T, \2 N( W. V
let k 01 t2 k( @2 }) L( h; I, i
;;
计作出过评价的邻居节点的数目
* P5 ^& l* P* ]( Zwhile[j < people]) f! c& |0 l$ y6 [
[
) L9 K1 W  ?; O2 d" x/ I1 r9 ]if (item j( [credibility] of turtle (i + 1)) != -1)! C* z9 Q' n) w% l$ i* s
;;
判断是否给本turtle的评价质量做出过评价的节点
4 V" O( k+ z# @) w% O6 H[set note (note + item j ([credibility]of turtle (i + 1)))
& l- O6 F; }3 [: g2 M) a;;*(exp (-(people - 2)))/(people - 2))]
- Z& [6 Y1 Q! Y) {0 a# V2 }
set k (k + 1)2 G0 P/ X2 H6 [, x
]
1 r) t  D4 }  M, y! Wset j (j + 1)7 d7 i% W2 v7 S: s
]
9 O# J5 {- \; g. rset note (note *(exp (- (1 / k)))/ k). j! `% F1 O. |; v
set credibility-list (replace-item i credibility-list note)
# Z. t, Z% P- t. _set i (i + 1)
% ?  m2 x, M+ i/ Y! T]
' y; x6 }' ]9 w! B: p0 rend
: j5 r: x. i" T" W. b. E6 m0 C" v/ Q/ g2 P
to update-global-reputation-list+ T; s- J, J7 A5 F' Z, W; d
let j 0- E6 Q& ^' p+ a
while[j < people]1 v' z1 x- @2 c$ A$ f* X
[
! w  M1 ]/ F4 |6 [let new 0
; m& H1 i. w. y;;
暂存新的一个全局声誉
0 B* L+ ?% J; a- ^' W4 H* e% E7 nlet i 0
$ C- Q; }7 [0 O, h8 f# t, B, g5 b0 p( dlet sum-money 0
$ a8 }' K4 ^8 g) dlet credibility-money 0  ~4 t# ^" L" e
while [i < people]
* X8 C2 K: J: T2 _[
0 B0 D  c! o: h7 rset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))  ~: x$ l3 f7 [' t8 O5 K
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))+ i8 U$ }  m# g* ]/ w/ U
set i (i + 1): |# [$ z' }# T- l  ~
]
, _$ H+ {6 E3 m7 O) {% S9 ?: U+ flet k 0
7 B3 J3 @( d# H9 wlet new1 0
) p7 W- G$ L  [0 owhile [k < people]
+ ?7 a# W5 V, @' {2 |[# M4 y: w7 q6 ]0 k& D
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)
, _' a/ n) g' wset k (k + 1)
9 J% |9 v* k) d: O  W]8 S9 q% j; y3 n
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
( ^; |8 \& ?5 N2 b9 i# wset global-reputation-list (replace-item j global-reputation-list new), i+ x1 z9 `1 [1 s
set j (j + 1)5 |: p1 L6 v. o9 K
]$ Q3 Y8 r# p, m
end
8 V: G. ^+ V& |- J& g
0 P7 f( V2 A  C) {7 B0 @8 [, m* C; e* s# J

/ G6 \( v/ u2 T' `. ^) ?: E- `to get-color" W- x0 _  R  P* o4 {$ h

5 |( S) R9 g; `( a0 w- Jset color blue
! M! }0 S6 n3 A. }6 `9 ]
end
! \, Z- r' H; E6 K* e
4 N$ q4 J7 o+ N. p9 Dto poll-class- i/ A5 g0 v( Y, o9 Y* {  m" A+ p
end6 l( y0 u+ L" {. H0 p4 F; J
$ n9 y4 k! n8 Y' L2 {% [
to setup-plot16 O( B5 |7 Y( K* ^8 x* u
0 {1 O# @' X  u0 B: K0 n$ c
set-current-plot "Trends-of-Local-reputation"

4 G2 p  |6 o. j1 r9 j1 ^' ]; x  R4 e" @" e7 N: n9 `* j
set-plot-x-range 0 xmax
8 g9 ?& n# o) U* b
, F5 X5 I+ }& b& P- L7 F
set-plot-y-range 0.0 ymax

7 R/ p8 S. }( l. d- x+ z* X7 Oend
: L" N$ U# d3 K& A& U" h* E/ F- }3 ^* ^5 O0 r+ J
to setup-plot2( ]. N& ?  _' q$ m
- |& Y; \7 S% m) F$ ~8 D
set-current-plot "Trends-of-global-reputation"

5 X- g# I0 u  }9 c. q
! E! V' G6 x# ^) [0 Q# y2 B! Hset-plot-x-range 0 xmax
5 v) r& \1 J- J
- x2 y1 a& V) u1 n. c! ]- E. h
set-plot-y-range 0.0 ymax

5 [7 E2 F0 L' uend
8 u  s, X4 D, B8 j% C2 s" a
3 O* v$ @' t( g( f  N2 Nto setup-plot30 {( L! H' }3 b& b% c( I
8 x# B! y4 ^+ d1 G% \" L$ k
set-current-plot "Trends-of-credibility"

5 d8 {2 I) j, H! a* O
5 Z' r3 a5 L1 {% K  lset-plot-x-range 0 xmax

3 l' V8 \1 [' I* i2 |4 z8 |
" @- f! T+ I: C. ~set-plot-y-range 0.0 ymax

9 E! ]7 h: [7 \3 x: z/ c4 gend
2 {) V' a& u: \% C. V  M. a# z* @) \5 h
to do-plots
* S# A* a, f% j! l0 L2 [2 m% cset-current-plot "Trends-of-Local-reputation"
  J$ @, W# E; y0 B3 g/ b: Bset-current-plot-pen "Honest service"0 M7 d+ R; s; r; l% j0 A0 b
end' X* x5 G" i2 F

5 s* A- s% }& H2 Z* e) g7 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.
+ o7 o4 S( G4 P& b, D# A/ p7 K2 ~/ `( y& 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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