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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:
" ^3 I9 U- Z9 w  }3 Kto do-business
: l6 R+ U) a* e6 z rt random 360
1 ]0 j# r& @/ U) B: c0 k* G; G- q fd 1
, X& t6 Z& U8 L ifelse(other turtles-here != nobody)[7 f- m( M' x/ T+ o0 M* o
   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.
- b& x$ ~7 X6 }. H; y   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    9 m! U/ i0 y/ |
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer3 c- \% r: u! q
   set [trade-record-one-len] of self length [trade-record-one] of self' ~  `# }' r& J% L4 I, r" M) z
   set trade-record-current( list (timer) (random money-upper-limit))
6 [- w+ L, V. \" o$ Y2 j2 ?; W8 O. S, w! _& h" d+ P
问题的提示如下:
) j& x$ e& w/ ~! Y
- d* q4 J% u  Q" q1 {4 [error while turtle 50 running OF in procedure DO-BUSINESS5 f$ h8 c; [2 u8 I" p
  called by procedure GO
8 B  F5 H; z8 y+ x# p# wOF expected input to be a turtle agentset or turtle but got NOBODY instead.
# W8 U' {8 S) L2 g0 s# `. b6 C
(halted running of go)
' G7 v2 U* g2 B7 d
4 F& [& }# \6 L$ Y) S5 |: C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~~* O$ i, i8 [. Y& _8 c
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/ X0 D- g" L' {& |+ r
globals[
  P3 ?" ?# y, Y9 \xmax& m7 r7 t% p1 [) I" T' E% i! c
ymax
* h: q- T5 q6 N) D& E' i) hglobal-reputation-list7 ^$ U8 X; C- `6 @/ J( L0 m

" P) Y1 F3 P+ y;;
每一个turtle的全局声誉都存在此LIST
) r( C4 G* Q9 Y% N; j4 @credibility-list; c$ R* G2 g4 J' T  l- ]
;;
每一个turtle的评价可信度
$ d' e" k* p7 f1 f3 ]3 ahonest-service
/ O$ V0 a5 a) T7 Nunhonest-service' d# u' |7 A' s
oscillation" R8 ]. g7 y6 e
rand-dynamic
) f, {+ n2 I7 k. H]' Z6 g: B9 n- o% R: K

$ e; V; Q  j1 w" D8 cturtles-own[! y% F# [3 K# [$ y  S# D5 y
trade-record-all
0 X; _9 P; ?; T$ N;;a list of lists,
trade-record-one组成, z% g1 |% W) X: ]+ c' N* e7 h' E) U: [
trade-record-one
8 e- I1 v8 p+ S4 c% I; [3 I( u. _3 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+ L( |2 P2 \, K

& `+ j3 K9 i/ j: x;;[
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]]
( z/ y; W) B2 n7 k- {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]% l* B+ I, Z# s7 `3 @
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# a; p' r; j  D0 q% u2 ~* L/ z
neighbor-total
5 `4 f+ \* u+ ^4 q% p0 V: |;;
记录该turtle的邻居节点的数目
$ s: u$ [  m# N4 Ltrade-time# e3 n: u  o2 L! B- b* l3 g# x
;;
当前发生交易的turtle的交易时间
4 G6 u0 A& q4 ~  J9 }appraise-give
# U. e4 F% W* D% ~3 X0 X: N;;
当前发生交易时给出的评价8 Q1 u( l& Z& N% c
appraise-receive. ~' G7 {( Q# K  |; c
;;
当前发生交易时收到的评价
# a: s4 s" [5 e* C$ C, lappraise-time  W; B4 w1 k7 }4 ^! M) a
;;
当前发生交易时的评价时间
5 H* z$ v" @- ]: Nlocal-reputation-now;;此次交易后相对于对方turtle的局部声誉
" ]( q: v: g+ ~! Z0 Xtrade-times-total
: Y1 m! w$ z% N  ];;
与当前turtle的交易总次数! |' G2 q. x+ K
trade-money-total: D7 z1 A) R2 N# C4 }: N) F3 }
;;
与当前turtle的交易总金额' M* j: a% ^( [* V' x
local-reputation
# L' e) Z0 G) q0 L) T$ @2 r2 iglobal-reputation6 M- n" @: P7 G1 ~) x/ v: M
credibility  M2 M7 i  T% }- d7 n
;;
评价可信度,每次交易后都需要更新
. `3 H, K" @2 ?/ g0 T9 @credibility-all
. e5 h# D- E+ i  |& C9 Q;;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
- A: J6 A7 Q5 f$ ?# J0 v* L
! g1 F; x. t7 H;;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0.57 P- S7 O3 m8 ?3 {) J$ E
credibility-one* w5 j9 |( P7 o% J% C' F" j
;;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
" i: _1 V# h" T; M0 hglobal-proportion
9 Y) B  p" ]9 \' c- i) Kcustomer
. y% A% Q, i4 y4 l, A4 Q# Q. ?% H; kcustomer-no
5 \' K4 M8 D/ P8 Gtrust-ok" @: ^* t" i$ y4 o$ B, x( {) k2 [8 J
trade-record-one-len;;trade-record-one的长度& F% w, `( y4 `0 D7 B; u
]- p) ~  P/ M  Z1 M! H

% a/ g: Z* Q0 B5 _: ]. V( e  l;;setup procedure
7 ?. m5 o: A6 D. P
1 D+ L4 |( j0 {* S7 h* ~" Jto setup; @1 s, |7 b; L2 y9 b: c
+ w9 f* P& G9 I- H+ f
ca
( H7 Q. E; y6 X

6 O* I, I) s* d2 ]* iinitialize-settings

# E. |7 C+ j9 H3 J7 s+ o
1 {4 ]) t3 f. w* hcrt people [setup-turtles]

$ e. C' W7 v9 j% T! _* H0 s" o; {; C7 z+ U1 x
reset-timer

" f) O0 _4 ?  n9 I2 o+ }: c* n" E2 d. R. n6 j. P
poll-class

7 y* e4 z* {+ \2 w2 e( p9 J5 }3 ?5 [( t
2 u. u! u8 G) L! isetup-plots
1 m. ?% v' y# |! D

# u2 Q9 J: |+ D. E8 n5 \  |/ k; tdo-plots

' F" W: g, O* [end
$ e/ p# p* ?+ c* [1 ]
5 I. H) x9 g, k) @; t- `% n2 fto initialize-settings$ C. w, Q: @7 e5 I

8 v% M9 F2 f( E. K# Qset global-reputation-list []

2 O" p5 i) H- _. g
. W  W2 k- w1 S4 D; @# r# |set credibility-list n-values people [0.5]
3 E) p& z6 D) C! X
3 x0 m6 U4 c- b: s& k: D4 ~% D* m5 {
set honest-service 0
' ^. d0 S  F( y5 S- N" C: z% O
+ @$ D: w7 V5 F6 l" D
set unhonest-service 0
' j% @" f& ]3 E: g. q1 T: a0 F0 e
9 N0 M9 d. V& [  f( H
set oscillation 0
$ g/ [9 ~0 \) _" M
* u# Q9 `: `; O- {# x; K
set rand-dynamic 0
/ L. p5 D& M. O. R8 }
end
- l% o- z" z' y/ A) ~7 O# m6 u8 ~7 V7 K: v, H( \0 P9 T1 e0 \
to setup-turtles
* N  P0 E6 [6 k6 x- Zset shape "person"# ]$ c5 g$ z+ _3 Z6 M3 p! ^
setxy random-xcor random-ycor% ?. c% N4 |3 `+ h/ |9 q% y
set trade-record-one []
$ y# L0 o5 m8 `- _4 D

! \" [8 {. k4 D" kset trade-record-all n-values people [(list (? + 1) 0 0)]
0 T) l  C9 Z4 X- l1 U( y9 o+ A

  T2 b! s! F- d  ^5 [% gset trade-record-current []6 Z- a0 O: K& P
set credibility-receive []9 e* m$ T" x! o( v5 ^( n
set local-reputation 0.59 ?" [- n  o/ o% g7 s( Z
set neighbor-total 0
) \% h+ O' E3 l5 ^; V& nset trade-times-total 0* I. ^# @& o2 N  N, p) {
set trade-money-total 0
5 _3 V% x0 R( u; c' K" H  Rset customer nobody, q' E, R6 v: n- h! e* V  b6 E
set credibility-all n-values people [creat-credibility]/ h! g/ _' c5 x. [! C# H# G
set credibility n-values people [-1]2 w* F+ |" N8 [, _4 F5 M; C
get-color
; d8 u4 A- J' X7 g1 d3 e5 a* O) J

6 ?& T: O! y9 ]end
3 M* c# I  a4 D& {& A" r9 ^3 v& u( Y& }$ j& X4 E
to-report creat-credibility
% `! ]. e' g% F5 Y! [report n-values people [0.5]
; m2 u  |4 s5 j  B( r; z+ oend1 f, r5 ^- J' t) W6 k/ K4 ]

& L( a& z% |3 W  p$ n! r4 X9 yto setup-plots3 a( G3 _/ \' @( X9 U4 ~: b

- v& c; z" @" W6 i! c* v: E$ Pset xmax 30
) T- E5 r! {6 t$ ^- f9 d
- R) b+ \6 n6 ?. X* T0 v
set ymax 1.0

3 o! O, h  q; C# F1 N
) `7 v" R. F% `. N3 J# l: Jclear-all-plots
3 j4 X. x7 C" V

( i8 ^; X9 W% g; Z' Z2 Z7 Dsetup-plot1
- S7 g4 D" S5 s' H) L5 A# Y

7 N2 m# ?8 S/ ?" e( C8 i/ e  Q0 Hsetup-plot2

' N$ m/ C. n7 |- S( V" n: Q- ~, _, {# B% M  }% @2 `; x
setup-plot3
. T. x- \/ \1 [9 l3 l0 i8 o- q
end' Z. t' o- ]3 Z, k% q- Z' V% |
  K( g9 ^: S- O, M$ y! W
;;run time procedures+ k: v( p& a: s* A0 B
1 g# r7 `! K+ G6 y9 O
to go& r8 ~3 [1 y! y- K
7 x9 ?, |6 j, C
ask turtles [do-business]

5 F" n; [1 h, C* u# _end* M2 V$ u" j% J/ w( Y8 m# {1 k6 ~

8 T; q2 v9 ^. S2 H  }% N/ `to do-business
2 l: |0 E: Z5 o0 H2 M5 Y8 S  m

7 X' X" L* ?6 K$ x
# u# C- @, b: l" P  w6 L. j: X' Ert random 360

' o2 d9 N" g8 R7 c2 [3 C
+ u9 a. A! X( \6 B4 u9 e. @7 Hfd 1

( ^. q3 _: A7 L. x1 c5 c3 n6 Q/ C; d4 W5 S. `" H+ {
ifelse(other turtles-here != nobody)[

( K, r' o5 r1 n1 u3 Q
/ c' E" q& P  a# T+ d7 `# I  sset customer one-of other turtles-here
) @$ _. U) y6 G' s* A0 x9 W
) s" U) i; Q6 K$ a# W" L5 v/ r5 H
;; set [customer] of customer myself

0 v* W5 e( W1 R! P% e
- U: s) p; z- u7 `6 Y$ dset [trade-record-one] of self item (([who] of customer) - 1)
3 N% A1 ~* b3 l[trade-record-all]of self
: [% c/ R: c, E$ d% y' D;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self
  L4 B2 \8 m# P, p
$ g! r) Z; f$ E( ^
set [trade-record-one] of customer item (([who] of self) - 1)
: ^5 Q3 H5 Z; G6 j[trade-record-all]of customer

& i8 ]/ s. X8 M
. ]3 \$ ^! D( u; b" mset [trade-record-one-len] of self length [trade-record-one] of self

2 R7 {2 _) W% A& Z
. [1 b  M2 T5 N( [& W* a1 Vset trade-record-current( list (timer) (random money-upper-limit))

5 T" r+ ^# c4 g% R% W( W3 Z9 E& v% T  @* u5 l& T
ask self [do-trust]
. C- e& @) _- {3 ]$ g;;
先求ij的信任度
5 Q# `* v" J; o  I9 f- s3 o, R5 i7 ^: Y& [
if ([trust-ok] of self)) c/ I/ O, r  J/ }( T% z+ Q  b
;;
根据ij的信任度来决定是否与j进行交易[3 o: X! V* y, o6 M* @( ?
ask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself+ d! V8 u1 T( n
  g: v- V" b1 D$ c
[
( g; B7 m  Y9 i! J0 ?0 x' |5 I
+ k7 e2 |/ i: I
do-trade

2 n! v9 G) _. @' \5 J! P1 S
  N+ O2 t5 i$ d, [, J2 eupdate-credibility-ijl

$ s: x  D% J: O/ ~! a
9 i  g% x/ ~5 b: V: jupdate-credibility-list5 N! ^  P, g/ |/ ?, N
. Y7 q' V0 l' w# z3 I5 o
' ~/ P$ P8 f) B2 n
update-global-reputation-list

, s; o/ z* F1 G9 k  W, {1 S2 s& c: B9 H1 L
poll-class
' ~7 s7 n1 H, l" Y: o

$ V6 ~0 d  W6 ~* Gget-color
/ Y# Q) Z5 z  Z& j1 |5 e: p( y% H5 G

- \6 j0 I" L8 U% @0 p& H0 G]]) `# p9 R# R3 P/ U2 p* K

& o' V4 y1 `9 B+ t; x;;
如果所得的信任度满足条件,则进行交易" u5 o! k6 @5 z- z1 @4 q
# O* V8 \, Z9 N+ E% ~* q, c, O
[
4 f7 J0 T+ v8 }* C' p' v

, p/ ~1 ?7 l4 H. r- n; N; \rt random 360

* q; m( ], k+ r2 A, Y, R$ D: I% E& q  q% N2 f2 A( X
fd 1
- L* T$ b: }, g, L! G3 b
: L: z; u2 Y2 i
]

$ U+ y7 k# Q) y' L( j  d) B$ E9 K& y  M
end

4 Y1 W! d2 m* n4 ^. s0 X
" T" u7 `5 y' X9 i# L' j4 A& mto do-trust
% Q" @& a8 g5 |' {" Q; t9 I3 U5 {set trust-ok False
0 o. E7 }1 t, @  j
+ e9 r$ B3 o) l1 l6 A* `
. n/ z! T+ r' P/ D# j
let max-trade-times 0/ q$ ~5 _# A2 i2 r8 a
foreach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]; X* K0 d$ b, {8 ?+ b
let max-trade-money 0+ Y- P* f1 c: o
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]
3 ^3 Z3 V, j/ x) T; ?6 C0 ^let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))9 @1 v  G8 X5 G# T# `' `1 i

2 A  h  k+ a4 W4 K1 F- }5 O& e

0 q: q2 U" [2 C# Jget-global-proportion5 \% A3 w( N/ |  d8 N
let trust-value
) d" e2 h6 z) Z" H( d7 Alocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
& f- c; \$ o& W4 h* N3 x
if(trust-value > trade-trust-value)
- ?6 J5 S' ^2 z! ^[set trust-ok true]6 r3 _$ w% r+ g% G/ j! s
end
* l& w+ M6 U# l6 b$ c. @' [" q( r6 F! M* b# X" w
to get-global-proportion) A! j9 ]$ ^7 F
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
3 w2 `1 x8 x( z[set global-proportion 0]
5 P) o" H8 {  p2 p[let i 0
- A9 F. j! K2 ^5 }% y, glet sum-money 0
6 ~/ \* }' g: E. K4 p" w3 G% ?( Y7 owhile[ i < people]# j( Q/ ~' G9 b
[2 b% a" `7 E0 ~) x# j: f9 _! f
if( length (item i
+ D4 w& Y3 {- P  N, i5 ]4 ?[trade-record-all] of customer) > 3 )

2 _6 D# y" k, @$ H9 b4 u1 X: @[
9 t! o. d  B. R) D( T' {* D+ Pset sum-money (sum-money + item 2(item i [trade-record-all] of myself))
- A. [" p! W4 ]. {]
: f; n2 c' T6 y. J# A8 A8 J]; w+ M* z5 F+ O$ M; y( a
let j 0+ h: ]% V1 U9 K" d( G% M
let note 0) S+ d. d" m4 T% X* d7 f7 n
while[ j < people]
' K  n6 Q- _+ e8 P2 @. M% c[# O8 w, K. t* z) V; L9 i$ C
if( length (item i
- U% y- X+ t" ^; B: q" u8 N[trade-record-all] of customer) > 3 )

1 o% K7 ^* v, F0 c% j( h6 o* X[
, _3 A. S% b, l% qifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
0 R* u6 k# K/ i# ~[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]6 m# R) x( y. U
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
+ H' O; S9 E- u]
# ^( F9 a7 l% f]
' T7 [, \7 c9 [% D3 x# f- Jset global-proportion note2 M5 Q( Y. S, v
]
& Q$ _7 O  E9 m3 r: Send
# C% a! Y: F5 @  ?9 y- J
8 L% v$ S) ?# v& V6 Qto do-trade
  r9 F( W8 L6 @) D, \;;
这个过程实际上是给双方作出评价的过程# a% n+ z  @# Z' S4 G) r- h
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
9 m* R1 x6 C* E. Xset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价6 G" q: s' v& E% ?; ^" U! q, K
set trade-record-current lput(timer) trade-record-current
# \& R; m! \( i" k9 N: a;;
评价时间
3 `# }$ `/ ]# L  vask myself [: z# _4 [" W3 }/ q4 s8 O# G
update-local-reputation# _5 t& j# r1 |( O' D
set trade-record-current lput([local-reputation] of myself) trade-record-current# ^. [. X0 P0 ]( G# D) M& ?7 M* x0 R
]
; R' ]; [3 K1 y* t( N; w6 Aset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself$ ~  a( f& a" Z5 C0 v. V, r& Q  U
;;
将此次交易的记录加入到trade-record-one: M$ V! m- R+ U5 j+ V
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)
1 a* n- q5 @1 ~let note (item 2 trade-record-current )9 W0 `, Q% l5 `, V2 j/ E# T2 b
set trade-record-current1 k( C1 z7 T/ O' M, K
(replace-item 2 trade-record-current (item 3 trade-record-current))
$ y% \" w2 s: @) \9 ?- |' i% _) R0 Z
set trade-record-current4 _2 ^) [* K$ ?' @
(replace-item 3 trade-record-current note)
2 f+ O2 _+ g  Y/ a1 T3 Q
* h2 C: x" E! |- L
; B$ E8 n# y2 M+ D# L
ask customer [
5 d6 H  o. q# tupdate-local-reputation* f/ {+ l7 ?" Y& [/ s% B
set trade-record-current/ j& m) t* s3 i2 I$ k, S2 s" _
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
  `5 k& ?" V0 j) b9 M8 K- T
]
" R6 h' i) ~4 D) f6 n$ x3 ~8 p! R& @1 h

( h+ {5 J- c9 \set [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer
; |0 A# W0 C* s
; [. t4 P1 h& N' B; T; g  n+ c) B
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))# k" T+ l3 U8 p) S6 v: F# M" c
;;
将此次交易的记录加入到customertrade-record-all2 j/ G8 W  l8 J* @( B
end2 L  R+ F5 R5 C, z+ F
9 B+ D3 m+ ~. R- A- R; s
to update-local-reputation- w( b' {. K8 v3 H; z! c1 l' X
set [trade-record-one-len] of myself length [trade-record-one] of myself1 G' G+ E; |3 ]7 K. e

/ d/ }' _5 W, r! ^2 ?0 o: Y2 j5 M5 u* ]/ V, H
;;if [trade-record-one-len] of myself > 3

  \% ~- j1 m1 {update-neighbor-total! x. C2 ]6 I) ^) Y: ]3 X
;;
更新邻居节点的数目,在此进行
: Y* x! I$ E& o+ Blet i 35 ^4 @* K( Z. `" Z5 D, P
let sum-time 0
: I" Y" s- |1 G8 K+ p2 r6 w! nwhile[i < [trade-record-one-len] of myself]
3 o$ [4 s4 P5 r, |% e& v0 {[8 V/ n. `5 S% l/ O
set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )2 m8 e6 y$ _, Y- l7 ?' A& {: u
set i, C4 l' a! ~" f' ~. d2 l
( i + 1)

5 H1 W: S( N/ K$ W, a]
6 C  f; |( ?) @+ Rlet j 3
4 l0 V( z! ~) G9 ]let sum-money 0$ S0 p8 C0 q2 l
while[j < [trade-record-one-len] of myself]
% V- d1 a$ }- e# q% l[9 L6 w5 ?+ ~% Y: t. `( m
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)! o  h+ p) Y7 G6 s! ]8 z) i
set j$ E( k% S6 n9 c/ i9 t
( j + 1)
9 W2 a  c5 R& u7 j1 c/ E4 M
]6 a+ ^! I5 x5 l( t# L, @$ z+ [- W
let k 3
( O. G3 u4 N; Z& z8 L" hlet power 0
" d, n% [$ q* Y5 slet local 0
0 @, A/ p! C: i3 y1 {while [k <[trade-record-one-len] of myself]
5 e) C3 U) q$ U1 I& q! K1 D. y[
! \1 ?9 M8 A  l  o, }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)
7 ^7 N. M/ P6 ^4 r. A. s, @% y" c$ tset k (k + 1)
0 b+ l. F$ H) }9 c; u]0 _( D4 p. h; i& |# H0 j  g. Y' W
set [local-reputation] of myself (local)) ^, ~% r, B6 d8 i4 C
end$ {( s0 o) w7 R3 u

+ L5 R: K/ q: H1 C7 _to update-neighbor-total
+ Y8 J* v6 a9 r6 b
! g% S/ K: x) z( b# ]if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]
8 U' y/ x* ]+ N
' @' r4 A  U! m$ B* _) t
: G: r0 ?" ~$ A6 S" p9 w' i5 h; E; Z
end
4 U9 a; {% Z, b6 \
% _. |4 |; o  }' d7 Jto update-credibility-ijl
; b" @2 l# O2 F4 H& X4 j) M, T8 G" g  z3 ]$ A1 W2 V# k
;;
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。
* R4 Y( ~6 y% T8 a+ ^8 olet l 0& G* R! v9 ]" s6 T# a+ C
while[ l < people ]6 k+ G# H5 i  S7 J
;;
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5 D9 U' m  J# g& d- W9 d, T& T, q
[
* [0 g- Y1 d. q( V. Clet trade-record-one-j-l-len length item l ([trade-record-all] of customer)
! l& D* k, j- yif (trade-record-one-j-l-len > 3)
8 N8 F* O& v  `7 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" m! m6 D. ?; y* c# o2 D' x' q
let i 3
6 V+ j! s' Z& e1 N0 k1 ?6 ]let sum-time 0
( N" V3 Z- y0 _while[i < trade-record-one-len]. O& A  {; X3 Z& n8 O2 U4 y
[
/ X* _3 @& ~, u: |$ aset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
4 E# H2 O0 Q0 N9 P5 zset i
! G4 G' H5 H2 ]0 k  E" Q7 {( i + 1)

- j& m% Q, \( ?, u]
: j7 e3 y* W+ W5 E: y- I9 e  Llet credibility-i-j-l 0, y; h1 O3 l1 y; M
;;i
评价(jjl的评价)
, R" z# B. T" X, @; @let j 3
# |9 b; o* Q+ j2 e- Y6 dlet k 4
4 f" l$ ^0 \& h$ a9 D. `. i3 n* Swhile[j < trade-record-one-len]
) p- y) W+ Q. U; a' ~% r( p$ a[
1 C, M# j+ V2 W$ w+ _1 X# P1 S6 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
- S* x2 b$ s% X' R4 E  Yset 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)# R0 h1 |/ K) _, A# R( q
set j: d& x. m/ U1 l- ^) r
( j + 1)
5 w6 w) {% E, [* r" ]0 ?) E
]4 k& z2 z. ^/ q0 B( a2 I
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 )); `9 b! {. y7 B& z& X1 j

4 [7 K  s, O3 o1 w$ H! q" }
5 O! ~7 n$ M* n$ J9 D% p
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))
5 o1 ^" ?2 I) Y$ A, g3 W' k;;
及时更新il的评价质量的评价
  \$ t* {" @$ W5 Q: Nset [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]$ v2 {) ^+ D5 G. M# u
set l (l + 1)* P6 X+ l1 E( `
]
. O5 x+ `& p" g* D( ^end8 f2 ?) ?1 o) c% ]2 ?$ z. s/ X
  Z0 k- r0 v8 m7 k
to update-credibility-list% ?1 B: K/ Y+ g3 k5 o& G# e
let i 0+ ~- ]2 }; w- U3 `
while[i < people]
3 q4 x1 S) l! s( M4 r[
* D& o0 X9 W! U6 b; s4 L5 blet j 0; x/ q1 U/ M8 n. ^- M4 h6 }
let note 0
* L+ \: H7 t7 `5 B3 R! ]let k 0
& `# z! U: f3 \5 b0 };;
计作出过评价的邻居节点的数目
* \& i9 T  B6 D, I( ^; Bwhile[j < people]4 D5 O" V4 r" p( m' O
[
, ~+ j  m! l& b% J2 \" {4 lif (item j( [credibility] of turtle (i + 1)) != -1)4 V5 O# N. g/ U) B. y4 h* e" c( `/ U5 }
;;
判断是否给本turtle的评价质量做出过评价的节点4 q7 t" g  _: P. m/ p3 s
[set note (note + item j ([credibility]of turtle (i + 1)))
- }: V" R: K: m' B5 Y( v;;*(exp (-(people - 2)))/(people - 2))]

5 ~0 W4 ~+ n& [, aset k (k + 1)
, {! q1 X2 E( M4 I4 w! S]- l5 S% n; W3 A7 _+ z. J7 B7 Y: I
set j (j + 1)
$ s4 f& n0 D: I( ~* d]
! t* F: \# _" q$ aset note (note *(exp (- (1 / k)))/ k)
+ U! @1 L( g) Kset credibility-list (replace-item i credibility-list note)
* m# y4 x& I6 Q8 H/ Qset i (i + 1)
: Y( e) p( V) q: E2 z3 `1 z]
6 w- g$ d: D6 e5 D! Xend6 F* f# p: R/ ?* ?4 W$ S: z, ^/ ?

  m! Y0 \/ ~" E/ p. Q) O$ Dto update-global-reputation-list
7 U6 Q) S3 v% H7 x; S2 q6 @* blet j 0
6 B4 w. |9 T0 V! ~9 q% b3 mwhile[j < people]
5 q" Q0 ^. Z: H# I3 ^0 R[3 u; t: ^0 {6 I9 U/ g
let new 0# N$ V7 x! n8 U+ o2 `9 s
;;
暂存新的一个全局声誉
' b" S4 j: k8 X5 B6 Mlet i 0
+ k) L0 a! }' E( ^1 l3 C- xlet sum-money 0+ x) ~5 O" W) X- ]$ `1 G; L
let credibility-money 0" {# F* m4 ~% E& L6 W5 g
while [i < people]) r& l  N6 H) [
[
6 P+ Y+ x0 \8 a) P  H- C5 z6 Bset sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))
# I. ]9 R# V4 q/ ~" nset credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))1 z2 [' O# s- i5 T( y
set i (i + 1)
5 W0 _) B- \9 }]
) }, C, d, {  Y( ~% Blet k 0
; k% l  {5 u. |5 ulet new1 0
+ V# {; ^: W* a. Zwhile [k < people]. \& ^2 n  z3 L4 Z# k3 K' s
[( ]% |  V' E+ g! n8 }8 j
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)$ T. [/ F: c8 S" g) D
set k (k + 1)
! I4 k' U, M, s" ~. j]
; M* B7 d5 Q" tset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
9 J5 f2 j) p3 tset global-reputation-list (replace-item j global-reputation-list new)* Z& ~8 c1 N1 w
set j (j + 1)
' }" t) M& F  a3 x. W( h2 Y]
7 c% p" R: x4 dend
6 B8 t9 W4 Y/ s; N6 L3 L! o& Z  b2 d: i+ g" Q, S- H- w0 I1 l) C! K8 M6 n4 N
: t: R: o: t7 s1 V# m1 m

! p+ Z1 N7 b. Z! Q* Ito get-color
; N/ v# @2 \0 K8 A( m3 @  b
+ m2 ]& E3 a/ }& G% kset color blue

: h9 a% P# F: y3 X9 T* _4 Bend+ @2 I' N* z* H; N; N" [

! O( l3 i- i/ m4 z8 u* x! Ato poll-class
5 m- \) ^5 ~1 Q$ B8 O6 O) @; Rend
# r; y: C7 u" ^3 i: M7 Q: p, R2 o( Y2 t/ o; Y3 U
to setup-plot1
8 ?8 P' P' `0 }0 L% }2 k
$ p) V5 Z1 \( L  D4 I# e8 V9 I. Aset-current-plot "Trends-of-Local-reputation"

5 u; K, M! Y* C3 ]' u8 D3 T$ H1 L
set-plot-x-range 0 xmax

7 t) S1 ]0 m4 V4 Y! F( ]& L" D' w+ l3 N* n7 M
set-plot-y-range 0.0 ymax

; f2 D/ G+ Q- s. ?end
' w: D9 |" L( \9 q; f; O! t+ K- ^# J) U9 \* X
to setup-plot2
% W! j, f8 P7 x- k, Y! i; J; C4 E! c* b9 c
set-current-plot "Trends-of-global-reputation"

4 e/ @' t+ _  B7 r( n, b. o5 I! Q  R
" z; }/ r' f2 J! ~set-plot-x-range 0 xmax
% D9 l2 g4 ], v# m" H
2 `$ m6 N8 w% S& C7 U$ p
set-plot-y-range 0.0 ymax

& S8 X. d" \, ]& D5 fend
$ }2 Y+ B1 p. V3 b2 f0 F' G0 k: k! S
to setup-plot3/ o$ C7 @( `: H4 k7 e8 ]0 }
1 o6 z& F8 P, v  u8 t6 c
set-current-plot "Trends-of-credibility"
$ A& P2 Y# ~* P" E. {0 \6 K; w* P
' X4 ]! Y* V& o3 {1 b+ E
set-plot-x-range 0 xmax
, M: l. j5 S+ V  }( w5 q/ ]6 D

1 I  B# Y5 G! h* g! wset-plot-y-range 0.0 ymax
4 |4 E' w: o/ [' o2 I% z
end
% `! _7 f# a0 Z9 A8 u0 k# E
, Z  V$ X9 ^- f- P. l4 I1 Q5 ?to do-plots- i7 {+ k2 J. ^7 {
set-current-plot "Trends-of-Local-reputation", {$ W( l2 K: Q' \& j
set-current-plot-pen "Honest service". A& a: d" O( D4 a' y' P
end7 |6 @0 |9 R* a% y; |

" \7 g2 W5 v/ ]. }: v: P[ 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.
5 t" B* M! c( Z
6 @# p9 d6 u$ u; s9 F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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