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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:
# A* n" f% G  N) V- @to do-business   |, e; x- \% W! L2 x# g
rt random 360- d! {& q. O' W
fd 1
$ b% N/ i5 P! b' l( B5 x8 |) V ifelse(other turtles-here != nobody)[
2 W5 H# z4 U: D* e# I/ r( 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.2 F( g3 q' o" P# @3 N
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self    4 e4 I0 n8 R6 G# y+ a
   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
. d7 ^( T6 `4 x' h+ D3 r3 k   set [trade-record-one-len] of self length [trade-record-one] of self
. p: |1 X6 \5 Z# N   set trade-record-current( list (timer) (random money-upper-limit))
4 x+ J+ l, |# u" [. l, z6 l
( }3 P( l2 ?6 `3 T0 I! Q4 a! t( T问题的提示如下:
) B$ I- Z) {0 u4 n& e, s/ ~1 d3 J6 ?+ ?6 O( K
error while turtle 50 running OF in procedure DO-BUSINESS
0 w, ]! j" |# d$ r& F  called by procedure GO: I, K6 x+ o& J0 o1 |
OF expected input to be a turtle agentset or turtle but got NOBODY instead.+ E9 r. y7 p# n8 d# c" v3 W; k
(halted running of go)
# w8 L! ^0 B7 X* w! ]2 k
& |$ p% Q9 t4 c: Z$ i+ Q, |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~~; W* z4 D) Q2 s! k9 z
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
- N$ A8 ^: w' q6 N* Zglobals[; t* @: v8 V5 S3 C! s) V" i
xmax4 \% m& W( V- k0 n! y
ymax& O: u, R  l1 w4 H& `6 ~
global-reputation-list
& |0 f$ i% f9 i( ]3 P. I: }3 k& x% u3 ~
;;
每一个turtle的全局声誉都存在此LIST9 U8 b( \6 @3 l8 \3 s2 @
credibility-list4 |3 H' r! n5 E# ]* K9 j! x2 I( K
;;
每一个turtle的评价可信度4 ]. G, z) V& _
honest-service
, E! b9 c, F% f# _; j+ Qunhonest-service
' m1 B9 s' |( }* j& Yoscillation
+ j. ~1 l9 c! Q" krand-dynamic# U( \% l, t$ S, H( y# m! V) R; E
]
- f; _9 d4 m% G' Y+ _( q4 J  M/ ^0 m- C. P2 o
turtles-own[/ U9 J! p! \9 K3 `
trade-record-all/ W7 X( a4 B, y
;;a list of lists,
trade-record-one组成
3 o0 S+ m4 t; [  T: d0 b$ \trade-record-one
3 X3 r8 n6 D9 k% @* l9 v;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录# d% h& W, W5 @) [* b
! t7 `6 `& }9 O
;;[
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]]
- N& ]# }$ C# ^  V) ~0 Vtrade-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]
# B9 P% F/ l" k7 ]4 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
3 Z$ M* B  t$ Q( F6 oneighbor-total  n+ r+ u7 A9 B1 E2 K  r  ?
;;
记录该turtle的邻居节点的数目
# Y3 Z  G( `. B2 r3 K; gtrade-time
8 x6 [- |8 g5 w7 G0 c$ {6 }" {: p;;
当前发生交易的turtle的交易时间0 K( {4 u$ y2 @6 G3 e
appraise-give
4 C6 d1 @9 ?- Y& N  K6 F6 t: y  Z  C5 q% R;;
当前发生交易时给出的评价
# h1 K( e/ X6 `; z9 Tappraise-receive" K+ \8 R- b: f2 K. l/ X& ~+ P. S* z
;;
当前发生交易时收到的评价- A2 P* l& h8 k) P# {. G& E4 E8 k. I
appraise-time2 o3 j9 I- U8 D  R. @! W4 Y( H
;;
当前发生交易时的评价时间
& [6 O$ b/ k  _# C) ?local-reputation-now;;此次交易后相对于对方turtle的局部声誉" k( s1 z, A- l0 N! }; N# s
trade-times-total- e. s1 V5 i- u) u+ E2 `
;;
与当前turtle的交易总次数
- }, H7 W) x( c  T) utrade-money-total
' w$ {3 S  ^5 f0 B0 C' l% `;;
与当前turtle的交易总金额
( u: X4 {& O& s9 ylocal-reputation
+ F) v+ s: y4 m* Kglobal-reputation( k0 z% ^9 _1 r3 N: f
credibility
4 E' R: i, e: p. q; ~;;
评价可信度,每次交易后都需要更新
1 |" Q* J' c* |3 g9 H4 @credibility-all' I7 O. e$ e" e, f
;;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6 e7 H; V, u9 q/ }% j
+ S8 {& s& E3 @! p, n. q
;;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" M. @" g1 @
credibility-one+ q: N& |. Y0 v
;;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
7 r9 [( }8 }. W3 xglobal-proportion! w: M# U! h8 K
customer
7 Y8 x3 T" p6 y) P% Y% }& Rcustomer-no$ b, P7 {1 Z8 o; f1 \
trust-ok" b0 ?7 ^# j' {: L; t
trade-record-one-len;;trade-record-one的长度
+ A. _' P& [4 T/ k) r]
0 i* {5 k$ U1 z* [! O1 g' {
3 N, f+ B& [2 ];;setup procedure$ E( ^* e( P* B" o2 K

( h- u' B7 C* e6 H; Yto setup
1 I0 Y, c( H/ k) s4 w: I
( f# r3 C2 X9 P3 sca
' |: U8 S# t  Z5 h
7 e% p" U& U" K. \( f/ n
initialize-settings

& Z& \& x  o# C( ^7 \8 K* T! K
0 F% P8 L/ d0 s2 S* W: i5 qcrt people [setup-turtles]

& c' v6 [3 s) D  z* v# S; K
' m# m% r9 E( o' t* T! Zreset-timer

6 ?* _1 k) J# ^7 S& @
; e3 w; f% [' N' apoll-class

- k* Y# M1 F: H4 A7 ^
9 l% K) h3 u$ G; \8 Msetup-plots
2 L2 P  k6 W/ T  T
0 f$ @( e* `+ v. Z  I- A
do-plots

3 q8 L" s' Q# u3 i9 P0 ?5 dend, U3 N/ l3 e, O0 v5 i

7 B% O8 O. }1 Q. `/ r* |# `6 @to initialize-settings
+ ?) ?( Q3 A2 \' _% \* `: r% I4 c% a2 T
7 ~4 F) i4 [- Zset global-reputation-list []

4 ?* C' @4 H/ c1 H" }
+ x# I+ {& ?( oset credibility-list n-values people [0.5]

6 I% s7 c5 d  f5 g. ~2 d6 \7 d( @
& T8 z$ L6 m! g& W8 ~' Y* _6 dset honest-service 0

5 _: A8 M3 |' Y# ?! m. {* F" Y8 E$ W6 ]) V2 K
set unhonest-service 0

3 I4 y, p" |3 V+ G+ ^% {( t/ Y& K" k# ?8 n
set oscillation 0

" x1 h2 _; _) O- W- a8 f/ ?) y( }7 L
set rand-dynamic 0

# Q$ n1 L* f; k" J7 a" Fend! ]8 g. z" d3 z1 [
. _) R. Y" T8 H5 i
to setup-turtles $ @7 U* }3 j, y4 P1 L
set shape "person"3 S  j$ O" ?- i- l% G/ Y* v
setxy random-xcor random-ycor
0 g: X* t; k# |: u- zset trade-record-one []
- K! w8 [) K$ z- [
3 E( v9 ]. R- h7 ~
set trade-record-all n-values people [(list (? + 1) 0 0)]
( ]; L0 e/ }' z0 V9 f) s
3 H4 K9 j7 R5 K
set trade-record-current []8 i4 W3 i. v5 |: r
set credibility-receive []
9 }4 m0 \" Y( a6 S7 X( A6 Bset local-reputation 0.5
; A- ]6 T7 D, b. `1 l) @set neighbor-total 0$ @) g/ Y5 a* a; \
set trade-times-total 08 z4 `+ F8 I2 V" @
set trade-money-total 0
1 ~0 i$ I  T& n$ e+ T) Eset customer nobody
; X  r8 g, e9 [. }% ], X* ~set credibility-all n-values people [creat-credibility]
5 K- o8 `9 M) n9 {3 e+ e* N' [7 vset credibility n-values people [-1]4 n0 c  r3 E. X
get-color
. N6 i* d9 r; M$ i0 u! H- V1 s5 f

* f, |6 K/ n9 X, o) `8 S5 rend
7 G% s$ f9 Z* g
* Z  y# p. X% O$ sto-report creat-credibility
+ W6 h1 t( f; q; o9 Freport n-values people [0.5]. `0 }5 c/ ]. z; D& _$ K9 l
end) z, l+ |* N; j$ k) t, r

  I. g2 x( s9 g, @9 Z7 _to setup-plots
9 k& W2 N5 c$ q2 ?* i9 @4 n. h1 i% s: \4 V0 ^: T# ~
set xmax 30

8 N4 j6 S9 ]% O
1 V5 M) _( n  i5 W8 ^. h. ?set ymax 1.0

! B5 N4 y  ~' S' l7 [3 U( u' _9 o/ H
clear-all-plots
  g0 e0 I* _9 t7 K: M

: y# Q/ a6 i" O# rsetup-plot1
/ [* c2 z7 P8 x  l9 |
/ y% l% D) F; g! L
setup-plot2

8 Q: L9 x" {2 r: X8 ]2 ?3 S$ F7 O
) N% X  r& Y3 D# E1 Q5 U, \# V8 Asetup-plot3
0 U3 E- ^: c4 N1 G& K$ O9 O9 F" Y
end; ]3 h  B9 x, U9 R

/ S2 X; v4 @+ b1 m;;run time procedures
8 v% ?& s2 V$ g/ S) W# P; `) _& u2 T1 ^8 R6 x! o* [1 N6 }+ X
to go9 u$ [  {" w: D/ z+ N/ \  ^

! Z* R  u  U8 j1 l( x" S4 eask turtles [do-business]
9 m7 |$ R8 n5 `7 \: c, O
end
3 u$ |; m& a9 X
$ X2 t3 A4 E# W' T) sto do-business
$ Q; V( d% l; ~, o3 B

- g/ x0 E. G8 y4 |
* [1 v' l* w, b2 M2 N0 ?/ ?, v5 Zrt random 360

' w( f4 _+ k$ K, Z6 d/ W- ]2 ?4 t5 M, y- \( W3 G
fd 1

3 W7 {" [& B& O9 @% j* n) E( D
9 v9 L0 e+ m% d# n' w& F& Oifelse(other turtles-here != nobody)[

  Y- ~4 s$ O4 O
" H$ t8 C3 n' y: g4 w: \set customer one-of other turtles-here

6 f' S* {+ t) [9 ~% ]) n8 A( x  c
) ^: a- l# V+ E( v! H* O;; set [customer] of customer myself

: O. F. `4 i4 a+ P/ s
1 O. E9 b+ z. `3 k" rset [trade-record-one] of self item (([who] of customer) - 1)* j; L  Y: e+ T6 F7 t3 L
[trade-record-all]of self
# }  ]3 l. I* i' P. R1 h7 K# M;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

) Y7 l1 K7 m/ r  L' a) u
) f4 j- y  Z/ h  Z% k  Xset [trade-record-one] of customer item (([who] of self) - 1)
9 K, U9 x9 t* r5 v  H[trade-record-all]of customer
& `) b$ `' G  d/ r
* b# l' t4 P# L0 s5 ~
set [trade-record-one-len] of self length [trade-record-one] of self

+ ?3 H+ `" t2 r$ \) I1 H  r& M6 Q3 a, v- e: ?
set trade-record-current( list (timer) (random money-upper-limit))

% N% J2 k" W8 O* R, ^  v( }, ]; L* A5 x1 S9 }8 R
ask self [do-trust]
! ]% u" U. F# }0 q) U- m5 U;;
先求ij的信任度% @  {" V5 v' G7 S& G2 A

2 x' |8 d6 g' s  P5 f8 Nif ([trust-ok] of self)- X8 Y; f) z  e; B. y7 w$ O
;;
根据ij的信任度来决定是否与j进行交易[
, ]5 |, c) n. y9 Z9 qask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
  P! K. d" \4 t2 i8 _- W& g" ?0 X6 ~& X2 Z0 _" t
[
, N/ {+ r5 ^) K$ v) V

9 g- _5 O$ \+ {8 d$ Y( W* {3 odo-trade

1 ?8 e  H# V, Q  G9 `: f: i
$ L& ^+ G3 a$ o6 L9 w& Pupdate-credibility-ijl
( ]* H7 E( p" f; X6 d6 ]5 x

9 E# j. U# \6 A0 Dupdate-credibility-list5 k4 o- W! ~4 Q- Z; i2 \( K
8 B0 P, V9 Z( \- J2 E( o
! [3 @+ o0 E" a6 [& m. i
update-global-reputation-list

8 U) R) Q$ C1 H" [- t
1 R5 z# p! @% s* u5 J' }poll-class
2 _; t: \- W! t0 U! K
0 w, B$ M8 ?& s& a* T0 v: E7 S
get-color

3 }; F9 W8 \/ K2 K1 ?0 g9 E. B3 n
6 l% X5 r% p0 k( a$ c9 x0 R& F]]
& O' }: G, {0 c0 A4 D% b
" m' L+ a# O; ?" {;;
如果所得的信任度满足条件,则进行交易7 q$ n! c# K: J) U3 y4 t

/ i) }/ g. ~2 p* k! Y& }+ l[

5 N7 u3 R- X, n2 v  ?" o3 F( h# y" o$ N
rt random 360
- _( Z2 `! V; t' U5 p
- C" a' y3 ]8 q+ c, g- i2 `
fd 1

$ K! `8 M$ X, p  R5 L5 q' e( @- Z- g4 ]) ]% C
]

5 e  ?+ m- x2 `2 y8 D9 d
6 L% l  S+ \& U; W: P, Hend

( J" e+ A9 _& X% Z# z. \
& _1 x, s  _5 Q) k% ~$ Bto do-trust   R% d8 c$ u/ Q9 H) t& A
set trust-ok False% l! X9 E6 v. u' A0 G2 I" \: r
; i0 t% U; ^/ v: d. a3 o) ]& J

7 U+ d3 a5 H0 n7 s' {; \let max-trade-times 0
5 U, g3 Q* R- b2 kforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]]
3 [8 |6 L. T5 `" J3 m( C% Xlet max-trade-money 0
1 c9 e6 ~( Q6 a" [  Dforeach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]  U2 T3 b* C9 T1 z
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money)): D# W8 f% ^2 b7 b  S- x) [" Y
7 ^0 @, o! F; F$ o0 P! I- }2 I! F
3 q3 B! L8 L) a! a
get-global-proportion. J! H! H" l4 `( M0 u) g( Y- q
let trust-value* ^  b1 M  J6 x% K* b# M% e
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)
. k4 i' G% q8 P: ^6 w+ \. A- F
if(trust-value > trade-trust-value)3 _1 o6 F: v, O' S: n! z  C$ u
[set trust-ok true]
% }7 ?6 w7 L% x! y9 l4 k3 D: Cend
: z9 R) E* T( V  y# n* J5 L9 p& Y: y- w3 E; x, B3 _
to get-global-proportion: `& m3 p% s8 h! k6 n
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)5 W: z; h% \1 Q4 N
[set global-proportion 0]
3 l, o9 r& b6 {[let i 0$ o3 c) @! |2 Y2 s& U# b4 y
let sum-money 0
. c  U- {! N* k# t, qwhile[ i < people]8 w& g2 h, r1 L5 c
[
5 _( Z: Z3 M, P/ l0 _if( length (item i
  c; I- Q; J9 W8 K9 p[trade-record-all] of customer) > 3 )

5 L$ W. j3 j# \1 n0 ^[
8 {0 C' }7 A! t4 q9 P" aset sum-money (sum-money + item 2(item i [trade-record-all] of myself))! O0 A% H+ W4 [# ]% d$ V/ k
]
$ X0 q, i/ l/ M+ s/ J]
1 p% b5 v1 w4 f& ?$ M5 O4 G1 K! L6 Qlet j 0
- n  \. Q. y$ ^3 L* Elet note 0, o, N! _, B  K; F8 }8 n! m
while[ j < people]1 y$ A' L& J) g* M0 x' r
[! ?7 Z, ]: a: X+ G2 \, T
if( length (item i
& ^, B3 J' \8 x2 q1 E0 j0 r[trade-record-all] of customer) > 3 )

- i" d/ C0 V0 V7 }: U[
1 ^+ _  d! u9 {+ Fifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)* @" N( {/ j4 K& V# g) f. @* H
[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]/ U; l! O4 Y7 j, e: a  {
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]5 u' c) [+ Z% @8 F3 [4 ^
]2 I# J% }6 Q* L9 d; H
]
2 E0 Y& g& k) k1 d( R+ p* Wset global-proportion note
: L% W/ `# W3 x9 M]$ b; y+ ]2 f$ }' y) `
end& [6 k; V+ [' F+ [* d$ S
% V5 c1 `' `5 _' `% [1 R
to do-trade
3 L0 a+ O7 k: |( ^;;
这个过程实际上是给双方作出评价的过程; _0 @. W. s) m/ |0 h8 d
set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
. K( r; u) {1 }+ Hset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价1 H# M% m7 Z8 `! U; Y) k9 Y
set trade-record-current lput(timer) trade-record-current
  j, P8 Q% H+ ]. a, n8 E! J;;
评价时间
' _  O  l, }$ Gask myself [
7 p$ s& i- A" K& d# S( j/ wupdate-local-reputation8 w. e4 Q' v0 s1 h9 [
set trade-record-current lput([local-reputation] of myself) trade-record-current
& S- _( k8 ~5 N+ J3 [1 x]
' p! l: X+ o; Fset [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself  U9 d0 ]3 _: ?" a
;;
将此次交易的记录加入到trade-record-one$ Q) D- e; B2 G- b- M7 H6 N
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)% J$ x7 n  v+ ]; i& l( `) e
let note (item 2 trade-record-current )
- x( s/ q; B) vset trade-record-current4 s6 V5 T- Z# B9 t) t2 }8 F
(replace-item 2 trade-record-current (item 3 trade-record-current))
/ L/ Z  a* c% J: r2 g
set trade-record-current
2 r" L' i' G: }7 b/ d2 v1 d$ N(replace-item 3 trade-record-current note)! l% m0 l. _0 Z' k$ Y& f1 Y

0 w) T2 @. S9 U5 x1 V2 O$ Z
$ [+ j4 D4 ?. K* A6 m( g
ask customer [
- @1 j/ j6 h6 @  ^" N6 Rupdate-local-reputation
2 n3 T! b2 Z: ~7 F  Yset trade-record-current
, W0 ~  U4 ^, E(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
8 `& L/ ?- W7 \5 y) W
]
# Y3 W& R; [2 l
8 X  ?0 @! r8 q; l, l- b" v

/ R* E! v  i- Y2 i$ E) Gset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer# z7 K3 A  N4 f8 T
+ `' Q$ j. [- z$ H( f
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))! q5 }0 r5 f6 X5 F# J+ e
;;
将此次交易的记录加入到customertrade-record-all
% t' A  f3 O! qend
. S/ C& q0 |7 z2 m; M( F7 ^. o
+ C% ?+ t0 q0 x" F0 P( A" N' gto update-local-reputation* x2 {2 a5 r  f9 E
set [trade-record-one-len] of myself length [trade-record-one] of myself
; p. w/ z5 P: u4 _: J
) }% i8 W+ Z! t+ r) f" P; m  O! {' O$ r" k' P8 P+ F+ A
;;if [trade-record-one-len] of myself > 3
, `1 [& U" k2 d5 u
update-neighbor-total
! W9 @5 C! J# U/ c) h;;
更新邻居节点的数目,在此进行
  `8 ]) }* |- N  H+ U% y+ [2 rlet i 3
8 R8 V4 g9 e/ ~7 x9 X4 d+ ~let sum-time 0
, q2 l2 K: E' gwhile[i < [trade-record-one-len] of myself]! e0 b4 k" q$ T4 I2 \3 E( S
[
7 B- x3 Q8 H8 `# ]! `set sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )' ]( N, ~. p: e" Y- n. d1 `
set i
- g8 B$ W# e3 R; }1 q( i + 1)
0 T$ M3 x) ?4 G" U
]2 x; ^* K% v) c* M
let j 3
6 y( C8 @2 S- N, B" h% [" M& S$ plet sum-money 0
3 ]0 w3 r# G, U; h  }( y! q% V8 }while[j < [trade-record-one-len] of myself], U* l1 `" V9 k4 [* M6 P
[8 P7 ]% D" w- _, @& t
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)7 [; d+ E* @( a* R
set j
# E  [! V3 O/ @. a( j + 1)

/ l0 p/ K3 o7 b2 H7 J* m( t' J]0 L* H7 h5 A2 I
let k 3
' V! e% X1 r' T; _, i/ Flet power 0! k7 g9 r$ E* N+ D. Y( v: f9 F+ ]3 h
let local 0
) @0 l; |$ ~3 ]; O: m3 I: |while [k <[trade-record-one-len] of myself]2 [1 H7 W6 W) P0 z! ?, q  O
[1 {+ c8 g* X3 D( x. U. g4 @
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)
; X8 `+ |9 W' n/ Fset k (k + 1)4 T: Q/ o6 k. c  t
]
5 K8 J' A9 L( ?3 \set [local-reputation] of myself (local)
. j- D& D! Q' B1 W! Kend3 A3 m5 k+ D& Q  s; {. ]+ W
% c. o- r, {; D: C5 g# p
to update-neighbor-total
# }* c- |% y0 y: c# K6 d) T6 k
" p$ D) ^+ Y, Tif([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]  {% w, j- P3 R
3 @: A) c: b) M% [, p

) D- `- L! B( D  |$ _+ |end
0 r2 L# g; Q' \7 A2 g7 |% z# n4 v+ w3 ?0 F2 I5 d$ v' r
to update-credibility-ijl 3 `6 ]; z7 M' f2 k+ Z
! ~  b* l# t+ W( R* B, f
;;
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。) g4 K8 N- `& |, D3 s) J8 d
let l 0
! E) |" n* r0 W9 j9 B% ?- ~( Nwhile[ l < people ]
, G* L% t; n' Q2 d;;
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
  J* U$ k4 p4 `# h- }; t2 t& ][
# O: N. q+ m7 G) X% x7 ylet trade-record-one-j-l-len length item l ([trade-record-all] of customer)& @6 z2 u; h  @% r' E" Z" D
if (trade-record-one-j-l-len > 3)
) I2 j9 n  o: p7 M8 i[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* e8 u5 |. @, l# u
let i 3" Q0 S% \3 @6 G
let sum-time 01 w; F6 o, t1 x: Z* H) [
while[i < trade-record-one-len]
6 \7 x, c- G  k; ^: G$ ?* }[
  V, }6 G$ D! V# h7 j1 L$ ?set sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )' e4 d: H1 Q0 Z2 U; @
set i5 t" b& X6 t% S' g
( i + 1)
8 m! }0 N. s$ L4 V
]
! P2 y* n5 E  q$ l; olet credibility-i-j-l 0& \- |  {0 {/ `3 P, a5 V/ c
;;i
评价(jjl的评价)
- d6 n! A; z9 B" ?* hlet j 3
9 i& G) h1 o; X. x% @3 Z  ulet k 4" C  a$ f& {0 \9 s
while[j < trade-record-one-len]/ W5 j$ f1 k; ^( }7 o
[% {# \$ X" |( f
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
, A: r/ p+ I. x  j; G( zset 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)
& {( w6 H3 C( b  J  [set j
: k- e9 k8 X0 V6 F3 A4 Y7 C( j + 1)
. ]8 c2 a; R& @  C5 \. X8 H" U
], M# M  _& |) W4 z; n* h
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 )), h" J* f) g" O; |' f( J

% H( L8 A$ w% L/ c; @
; ~. q4 }' L7 j4 w
let note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))& T& R* K) A0 `0 m. k  f
;;
及时更新il的评价质量的评价" t  `4 W$ q1 ^. C
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]% c- _( z  Y* Y; q
set l (l + 1)/ V; v. n! y  |) G) t7 b+ ?7 W
]+ q$ K  g, H+ M; e' b
end$ U/ u6 A5 G" N% X% q9 F

& |! q0 F. k5 @. q* pto update-credibility-list1 a6 |: e& J7 R7 |( s. a
let i 0
. Z: G9 R! [8 K' k6 j* dwhile[i < people]
& Z1 H& @' d) h. [, e, o% j[4 k6 T2 f7 \# v6 n- }  B  U6 n+ ^" |
let j 0
+ d% n1 f, b' ]let note 0
5 e0 |( W4 ?1 F* {" h. @( B; blet k 09 q4 |  k# O! P  L1 p0 |
;;
计作出过评价的邻居节点的数目
  P! b; j) W: B2 ]' G5 }' w$ `$ Uwhile[j < people]
3 r" A+ |( B: r. e[" j2 l4 |9 O0 o* d* i
if (item j( [credibility] of turtle (i + 1)) != -1)5 s+ d) R* ?2 \) ~
;;
判断是否给本turtle的评价质量做出过评价的节点0 q& t+ L$ g# |9 g6 [4 I# F$ E
[set note (note + item j ([credibility]of turtle (i + 1)))* F' b: P2 W. {6 e
;;*(exp (-(people - 2)))/(people - 2))]
; m  Z" @0 [$ E6 i' U  C. e
set k (k + 1)( I3 `; D; l2 ~
]
0 X- Y4 y3 b8 U( w6 h1 _! u$ Zset j (j + 1)
8 ]4 G  \4 H5 P6 R]
2 b) |' T. j! m! ~1 Q. v2 A0 c/ t2 E; ?set note (note *(exp (- (1 / k)))/ k)
2 V6 d. @3 B/ b' v+ Tset credibility-list (replace-item i credibility-list note)
# N% i% X! \6 yset i (i + 1)- ^, V. Z! R3 ]8 j# P: R* o
]+ X' A( }( u, n- ^
end
$ D* q* c4 s* r/ H+ F0 x8 S* P/ U0 k( j7 g" S$ ]/ `
to update-global-reputation-list
+ o0 M6 T: @' L3 {  Y% Q7 j6 u5 `: }let j 0  N: m- k* }) K' X3 I+ o0 E
while[j < people]  O: i* ~# s4 U; W5 J' B  Z
[
/ d  t4 }( ]4 x+ _+ w* Hlet new 0
1 N& p9 y! S6 E- s5 @2 V6 S5 T; \;;
暂存新的一个全局声誉
. s5 G9 F: h, z2 p. s: u/ \+ Nlet i 08 W! F, e. d, {) ~  F1 ^
let sum-money 02 X2 r- v% Q0 S0 g! h0 s
let credibility-money 0& \2 @5 A- [% W& m( n% J& J; l0 v
while [i < people]
' W. J% K! q- S' z8 d; B. g[- @* i5 D4 {3 W, [4 v* a
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))( Q9 m9 ?# o! |; A
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))
, O2 B$ Z' R9 F: l% ^- }4 C6 y+ I2 \" nset i (i + 1)
3 m, G. e3 }0 T$ M: d4 G( A]5 F* ?; @8 y9 R
let k 0
5 Y2 _- W7 m/ u6 Plet new1 0  l9 F8 X- J/ L* {
while [k < people]% X* r4 Q. z+ H0 K, _- E, y
[8 r: ~8 C6 K' ~- m3 k
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)6 w2 e: A; z) o$ ?( @9 T
set k (k + 1)+ m  t2 H/ Y2 t2 t
]
. y$ W- t$ n1 y- S& |2 F* fset new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
7 c- |. {$ S' C4 F, M4 S( l3 A1 j' Cset global-reputation-list (replace-item j global-reputation-list new)
- ^8 _3 k8 i" s6 s2 W6 l6 y: F" Eset j (j + 1)
; s& V9 q; X/ u]
8 h% P" S1 a9 k6 Bend; v- ?, \; y# a% ]

; Q1 M6 S7 j# O
7 e8 k2 z6 y" K3 z% t  r( i$ {' A0 y' w
to get-color
% i  g$ t( Y3 ]( D; M, D5 N; ^6 @! m: R8 r
set color blue
' A0 `2 a! l0 k# e$ w6 |
end/ e* g# q; M: o& C2 v) C/ ^
: Z( J6 I3 b/ Q0 l  z
to poll-class/ f( z6 {+ g% b! H9 E
end
0 d5 t* r; n$ b" e
- H% R+ n+ }. \3 @8 A( \2 v( pto setup-plot17 ~( E& q5 g/ E6 z! j& E7 F& w

! |. s  F+ k4 d; [% bset-current-plot "Trends-of-Local-reputation"

! v( `: f  Q% n( ~( d% u0 L1 [2 X2 K8 }
set-plot-x-range 0 xmax

% i% k/ p; N: {
1 S/ b# l  w; s- ?4 b( gset-plot-y-range 0.0 ymax

  _9 N8 W: @  Vend7 ^9 _" L& n4 [4 i/ e1 C  g; c

$ A8 }5 g  r3 s$ N8 J/ Fto setup-plot2
0 o( f  D2 {, o8 G, S
8 y4 @- j- w8 D( v% Dset-current-plot "Trends-of-global-reputation"
- f. [' W! q, H. h

  V& g0 o; H& J( J0 W, S, H/ Aset-plot-x-range 0 xmax

& D  r5 K) f1 U# ]8 E/ a  l% `" Y: v; W- q
set-plot-y-range 0.0 ymax
. l5 ]' T2 L1 y9 x
end: W. w, j" ^" r( N8 C6 s

% s! d6 Q2 \: ^: _8 O9 jto setup-plot3
( H% ]2 d1 J6 I0 \
  e  G! S0 j& F: ~) x" Wset-current-plot "Trends-of-credibility"

/ N9 P4 j& h  s# h& _/ d+ q" ?1 l. ^5 j+ a8 V
set-plot-x-range 0 xmax

) j# Y. N7 H* X' o5 w  W3 u: @$ c! q. l
set-plot-y-range 0.0 ymax

6 c  C: ]7 A: |; @end
& S$ M1 @) V/ d, r/ k& \3 y4 d. h- {  q* i" b: Y) M( P
to do-plots2 t0 U0 Y  O/ I, Y
set-current-plot "Trends-of-Local-reputation"
! K9 e% i6 h' d6 eset-current-plot-pen "Honest service": h3 A* a7 Y2 K; ~; K
end% q  X, W4 V. l. S: n

2 b; D6 f% n9 w/ Z' J# [/ W[ 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 f5 i1 b! Y6 Q0 C
) l( W3 d6 c+ k
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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