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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:! S& b8 ^8 r7 M. ?' |' ?; I
to do-business
2 [; S+ D5 m! S* O9 `( x rt random 360
( A7 I* m" M8 |) J) \ fd 1
( z: C5 j( Q6 x- s# |( {4 { ifelse(other turtles-here != nobody)[2 H1 R( |6 G, o, H" 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.% {7 j( N& |+ G! C/ Y
   set [trade-record-one] of self item (([who] of customer) - 1)  [trade-record-all]of self   
8 u$ n* C9 l* V' X, Y! O- I& v   set [trade-record-one] of customer item (([who] of self) - 1)  [trade-record-all]of customer
  c, Z8 P2 ?( I, u4 L   set [trade-record-one-len] of self length [trade-record-one] of self
! f! ?* L0 W0 ]$ j- G1 S   set trade-record-current( list (timer) (random money-upper-limit)): B; t! q- ~, R1 M

9 v( w6 K9 k5 s: v6 ]2 g! K- u问题的提示如下:1 g5 L4 Y/ k" [! t

  m7 O) Z+ q2 c. \) eerror while turtle 50 running OF in procedure DO-BUSINESS
; I9 c% k3 r/ b) G! `& H' T  called by procedure GO. ?% ]! ?4 {1 O$ m( L" k5 q
OF expected input to be a turtle agentset or turtle but got NOBODY instead.7 k/ S1 E7 x! ^# p( b
(halted running of go)( m7 p1 a8 t. `
0 E2 g& E& K, F8 U7 y. `
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~~- `/ N* r# h8 I$ @5 L
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4 a  f; W2 K: C2 |+ l; O( ]% S  u- o
globals[
' f  M6 u2 O! M9 Q% l4 l8 _9 E2 \xmax* J8 }4 q0 c# B' i* u4 Y
ymax! N! w0 v, r" i  T. T
global-reputation-list8 f$ J) o  j4 b9 K
6 \  V0 h. M( x- c+ v
;;
每一个turtle的全局声誉都存在此LIST
1 Y5 S% t! _8 I7 S1 _1 ]credibility-list8 P5 @0 t/ t3 H0 _
;;
每一个turtle的评价可信度
) n4 `$ E) ]7 D+ h, Y6 x1 M2 ]honest-service
$ g8 U' z* l* K5 aunhonest-service
, S* Q& j$ |2 a' F+ h# U& _oscillation; \# c7 y$ I; H
rand-dynamic5 |/ U) g3 ^' `* h' x3 G
]  o0 t: J- Z* X3 O& d. t

  w, q7 C+ y/ h9 lturtles-own[+ Y7 ]* a6 I! ]
trade-record-all
! w- c+ r: Z# ~# T1 `;;a list of lists,
trade-record-one组成
/ o& `' y% i& Ptrade-record-one9 W" r4 u: g& c! g& P$ w. ^1 ^6 ]
;;list,trade-record-all
中的一个list,作为暂存用,记录两个turtles的交易记录
) j9 t2 D9 W( u
: H7 W% s5 N( N$ \2 P1 H+ J6 U& r;;[
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]]
* d) o" Q9 r& o9 Ytrade-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]* Z! o, O7 j' @' h% F' E6 D
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
+ T$ T9 m; ~7 D+ M" e2 {( _neighbor-total
- c- L1 B5 v$ G% V;;
记录该turtle的邻居节点的数目
. o0 n6 Y/ O3 \2 Rtrade-time
6 g$ a7 ^/ G7 u* l/ Q6 ^- f: T3 C;;
当前发生交易的turtle的交易时间
  p7 |* F2 R. w5 Z( P8 Oappraise-give
* G" v* n; g; Q4 l" O  g;;
当前发生交易时给出的评价/ S0 b# Q5 k; c6 Q& s) }
appraise-receive, V' x8 P' N; |' N0 U; @
;;
当前发生交易时收到的评价
% G4 `9 K, |  X( J0 L& Y, mappraise-time
, H4 z: _/ e4 d5 o8 N  W' u;;
当前发生交易时的评价时间3 P, b7 Q8 C/ l6 V! r
local-reputation-now;;此次交易后相对于对方turtle的局部声誉
  y+ k8 w' ?# f! F3 f9 Ytrade-times-total
6 M: O  C  f/ y" @* z;;
与当前turtle的交易总次数: t+ C  L) b$ x1 s! v
trade-money-total; B' e1 v: ]* }* g8 c
;;
与当前turtle的交易总金额
5 [# k2 P# g( _" U  I' mlocal-reputation
  R! _2 B1 \7 M0 ]5 V$ m3 A% S/ q+ yglobal-reputation. s4 `. ~* z3 _1 K: f, V
credibility, R9 g2 F' Y- f% O
;;
评价可信度,每次交易后都需要更新
1 B. y. `! h" y2 @: \credibility-all# J3 h- e8 H9 s
;;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7 {/ r9 D  @  w  k1 T

3 l& n. u; H- Y0 @5 U;;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
; S. v* F7 G. ]' h5 f& qcredibility-one4 {9 x! C2 a' ?& [
;;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. C9 ~1 T$ Y0 F' ~
global-proportion6 W" ?- C5 x( B: @* c* b" {/ d
customer
" t# F! H4 d8 j' L6 K% Pcustomer-no
* G' @! |, i: A2 otrust-ok* o: Z( h2 r. T( X: d
trade-record-one-len;;trade-record-one的长度% t7 o# f$ l) ~3 T1 U! r
]4 {1 u. Y' I6 ]  t

6 g' B) q7 y) @0 q3 e;;setup procedure
' ^  f4 z9 J, n2 `" q7 ?4 B9 F  A# t  H$ {; h% O4 E: u* ]& }* p
to setup$ \2 n, {! K, [. t

5 t, {+ c  y, G! r% ]ca
, i: v3 g! h4 b/ _0 j6 ^" n
( @; D- o( H0 v) D; t
initialize-settings

: m; v) n) }' {' |
6 ^/ ]5 @. l! Y3 ycrt people [setup-turtles]

* W2 v8 Z1 @6 p. B/ `: A
8 }$ Q6 E2 H2 M( T$ |, D* n* }reset-timer
7 c& b" g6 V2 M* J4 d2 V/ K* C
* Q- s( t( x' j3 s# T  ^
poll-class

2 X: ]; b7 G+ S* |# |& |0 j( y  `$ n7 O; h
setup-plots
0 E* {3 F! L. p% O6 m

. @, D" _% ]. M- I+ Vdo-plots

4 ~0 \3 [0 V; d0 K5 d1 Iend! z0 U# ~2 N( `

9 q- h" W9 F" {; a  p0 _to initialize-settings8 y2 m9 e/ }0 R" N
' V+ c) P( ]( ]8 C% X$ I2 W" K
set global-reputation-list []

) D& M4 Q/ T; h. {  v7 X. v) P6 X% `6 n  w# O
set credibility-list n-values people [0.5]
5 d# ^3 t6 |, p8 l1 W4 u. d1 U! f$ I% G
& H5 W* _4 H$ M. a  t
set honest-service 0

$ ]% u4 ?# Z7 C2 h1 C! t& a; j9 p) N* K, p& b- j, n
set unhonest-service 0

7 J# q7 d! W& j) b6 t  {* E: i& A7 p
set oscillation 0

; X8 Q8 b: T- H) m& n  Q
) J" M4 ^" T3 z: l3 Y) i- N/ S) x! fset rand-dynamic 0
5 x2 P' T" F' r% D! q/ m: Z
end, Y( ^6 I% [1 D5 a; r

+ A0 z) }% ]; Q) B- hto setup-turtles
5 D! _0 k5 C; I5 L6 R1 k  V6 `: K! y+ |set shape "person"( ~7 l: k/ a8 V9 @
setxy random-xcor random-ycor
. l, ?* u- ^' L% _set trade-record-one []( O" j. [" S8 P" O
$ e( Q$ n) W! p4 k
set trade-record-all n-values people [(list (? + 1) 0 0)] 4 X$ M. x0 k4 p+ a
* I, w) s% [5 Y# @
set trade-record-current []- I6 K8 n8 \% @! w0 L
set credibility-receive []: d# D# V2 p6 Q0 |( E' h; \
set local-reputation 0.5
/ }; J6 o) T& \. Rset neighbor-total 0
; y4 \0 ]1 [' }+ a; g, O' }8 O# y$ W9 Gset trade-times-total 06 |, Q$ T- ^& y. X5 J% W- p
set trade-money-total 0* [3 l) E; h& G
set customer nobody
6 Q& d% e; D' i, t" m. ]set credibility-all n-values people [creat-credibility]( {1 ]: |0 ~9 V3 y! G
set credibility n-values people [-1]6 p6 h8 ~7 b2 n3 m4 w$ l
get-color
. C9 K# V: h- l/ {: w
: h0 x* i+ P* q" E
end
& ]( j# y" G$ [4 w& h) r1 o0 c$ H1 ~- \
to-report creat-credibility, h+ ~  S0 n3 z7 u+ {: w  e% j
report n-values people [0.5]
8 {7 C6 E" A& }+ Mend6 [' X0 @" M- K- f* z

: F$ c" m+ K2 Bto setup-plots/ u6 W5 g; ?* ~$ t2 a

. ]1 o: K  m9 F" \. q. i2 vset xmax 30

, z. s2 T# e% D5 e- A5 F$ n( s. W* A4 q
set ymax 1.0

3 F) Y/ i- B  x- c" t+ L; |8 l) C7 D+ _
clear-all-plots
) q/ `; U. O- R( P( N! ]4 v8 }7 P

" @8 H) i, C" m6 q2 c: esetup-plot1
  u8 e% E# ^" }; H- o

3 A& ?  D; ], [0 k% Osetup-plot2
' C9 ]6 e( G) p1 \: I: q
) g1 d3 c5 Q" R8 y
setup-plot3
9 `' Y; O2 I2 G: L: Q( y4 s
end
1 }& J0 C' \/ z% ]& J- P  y1 v' _3 {1 i0 r  A; t
;;run time procedures
1 r$ W0 L$ }: k0 f* y" q# _. Y% k6 ^9 R( n* E
to go
; L8 _) N1 k9 K% t6 _8 g
' ^. C4 ~/ b  I# ]. |+ Y% o# oask turtles [do-business]
* I+ c  B; l. ]  E* R
end
2 V7 n- Y8 O8 {' P, {  \0 c7 a/ H$ B3 W) C) J- }- D
to do-business 4 q6 l" J; j2 b
" C/ n3 I- n# {% F6 b% [3 H
; r; A1 Z0 Q/ ~; {- v+ J
rt random 360

2 j$ j) M+ T2 H( y7 k1 `2 F3 c
  K* M  n) X5 |# F6 w" n  Sfd 1
: A" e- Z% ?5 A6 b8 C

8 z5 E5 y% g6 V$ s1 x2 Bifelse(other turtles-here != nobody)[
" w/ ]) x: |$ O9 `- f

. _: u  A. ^+ x/ x. qset customer one-of other turtles-here

0 H$ J- V% E- ?' w' j
: C+ `: o! L% M: M;; set [customer] of customer myself

2 Q( j9 Z5 L" i0 k/ w, H" s' x! |3 M# J0 o  s
set [trade-record-one] of self item (([who] of customer) - 1)
5 A8 Q  k6 W0 T) B& f5 C  F* ][trade-record-all]of self0 M% D( X: s* i6 \
;;filter [item 0 (? ) = [who] of customer] [trade-record-all] of self

$ m% ~. [1 S3 \. q( s6 }# k
) M9 y; n- J/ o0 F; O% H+ u9 Tset [trade-record-one] of customer item (([who] of self) - 1)
% @4 `5 ^3 [. I[trade-record-all]of customer

, T) g* \* J& K& C0 F0 h4 Z3 H0 y: s" S, H. a+ L* k0 Y* W# D
set [trade-record-one-len] of self length [trade-record-one] of self

9 h9 m! G, N0 \! [- O
, w5 D( ^- X" f) O% E8 Cset trade-record-current( list (timer) (random money-upper-limit))

7 r; S6 }; Y4 x/ N! O8 j/ W4 ^' T% k: Y* z7 M
ask self [do-trust]
* L0 R0 s" K; H# ?;;
先求ij的信任度* k! ^5 P6 {6 B; M. d9 y/ p

5 h* u" A. O. E7 x/ _0 Tif ([trust-ok] of self). f$ s+ ]: W# ]" ^
;;
根据ij的信任度来决定是否与j进行交易[
" H1 A$ k8 K* h3 yask customer [do-trust] if ([trust-ok] of customer);;
这里可能会用到myself
, X3 w4 G" Z) t* H' g
  D" \. J6 g, V8 i[
3 G% f4 r7 A" m3 ~0 n

. U5 t1 A" H9 w, A1 o* sdo-trade

, }; ^. @$ O# e9 ~! t" o- o
& V, q) i' v: x1 i' B( G3 b/ H& \update-credibility-ijl
, C/ y6 H6 E% v/ n" c6 z9 l
+ |$ C* a$ F: Q* t
update-credibility-list3 y9 f& A; |: Z

$ [# a; m7 n+ Q0 u: N4 M+ Z; {8 D/ t
update-global-reputation-list

$ O* T1 |" p* i+ n) x
7 k: q1 E$ w( ?; Y5 a0 cpoll-class

  h8 c1 A: l5 i+ V2 ]7 i
0 q  @- @( d. `get-color
2 N2 T! W: H3 ^
# @- v5 Y& n0 {* q# r
]]/ m( A9 @1 A0 u1 M9 G
, I9 l1 m+ l+ R& w# i8 r! {
;;
如果所得的信任度满足条件,则进行交易
9 [" z2 P+ y5 C3 Y% H- s2 G$ {1 Q
+ j4 b& l4 K/ L" ?: P& {2 s. }[
) k$ X- T& l6 W' ?

7 L7 _  m+ Q5 V  B- Brt random 360
; {+ Y! h. u  p

1 g4 j( v8 m* U3 C/ Z7 Afd 1
1 e0 B8 d( B! C! \/ N! M7 |

) S8 Q! C0 k7 ~]

5 p5 E1 X+ ?4 y" i% b! Y: e& ^, |. S( }& ^; J# J
end
6 Q9 M9 ^3 V) U( z* G$ |$ S$ Y
9 `. \0 j% E/ I% A! u
to do-trust
5 |9 U+ {$ [4 P, dset trust-ok False
. p$ w  `# I/ ?1 h0 z. T$ Q* a3 F
( n* U; Q7 c5 c
0 y4 U- Z7 J" }$ B5 U1 S
let max-trade-times 0
8 ~8 t- k; @6 y2 h" Bforeach [trade-record-all] of customer [if item 1 (?) > max-trade-times [set max-trade-times item 1 (?)]], w7 f& J4 ]2 Y7 m, P0 W" F
let max-trade-money 07 g& X5 d: P+ R! `& ^$ y
foreach [trade-record-all] of customer [if item 2 (?) > max-trade-times [set max-trade-times item 2 (?)]]4 A, G# e+ F/ ~) T
let local-proportion sqrt((item 1 [trade-record-one] of myself * item 2 [trade-record-one] of myself) /( max-trade-times * max-trade-money))
& m, f" x  v$ }% C1 f0 @! H2 j+ s5 w* g  {+ l) q

  c' C) E& E6 z) w, Lget-global-proportion
1 z1 r+ }* y9 ]/ h! _. ~let trust-value
% M# P# a4 [1 zlocal-proportion * (item 5 (last (item ([who] of customer - 1) [trade-record-all] of customer))) + global-proportion *(item ([who] of customer - 1) global-reputation-list)
( U# x! X/ c! e
if(trust-value > trade-trust-value)2 l% z+ [% _, T6 i3 R: g1 j
[set trust-ok true]7 A( p+ u6 K& G- I( N0 H- F) E
end7 e. Q" X( s# q3 {1 {' |( x

. u- X3 _# x' _& M) zto get-global-proportion1 ?/ d* B, H) f1 n7 u
ifelse([neighbor-total]of customer = 1) and (trade-record-one-len > 3)
  \0 _. j; R8 n* I: a/ ?[set global-proportion 0]
( p8 ?( `$ A" S[let i 0
: l& A0 G: t+ R; [% c3 e6 R  Glet sum-money 0  i! x( m- u' }, |1 v  J4 v  w0 a
while[ i < people]
8 y# R) Z) e* k7 ~[
# i; @/ r- ~2 ^5 g" rif( length (item i0 ~; L( i) T# V5 C! U; U3 {% j
[trade-record-all] of customer) > 3 )
4 v  J- y: g- e; E% j5 ~
[! `5 |- m8 {. X* M5 m% a( G
set sum-money (sum-money + item 2(item i [trade-record-all] of myself))3 U/ A" j! p/ l: q+ O/ |
]
$ m5 ]8 J( V, m. g* J9 X1 G2 E. ~]
7 j* L. }% R  W% m! xlet j 03 V: T' D4 s# h) K4 D2 n, ]
let note 0% W4 h/ m: J! s. p& A- s! t
while[ j < people]
! i7 p! m+ U) L; F+ b% q8 |[4 L3 `$ m2 f6 E% C  X5 n
if( length (item i
$ \; h, S+ z8 T[trade-record-all] of customer) > 3 )

! O+ ]: D* `: L% k0 _$ e[
  `4 t' b. ~9 V. U7 A1 {ifelse(item ([who]of myself - 1) [credibility] of turtle j != -1)
2 n4 i# \: D1 ~7 S$ n[set note (note + (item ([who]of myself - 1) [credibility] of turtle j )* item 2(item i [trade-record-all] of myself)/ sum-money)]7 y: w/ A! @0 i$ o3 w% M* f
[set note (note + (item (j - 1) credibility-list) * item 2(item i [trade-record-all] of myself)/ sum-money)]
8 ?- A) C; P  ?6 s9 ^5 O# p' v/ _]
0 d* c7 P: T. O8 [% d: g  h( J8 M]+ U8 g; C! w* O  i  C7 P/ O/ I1 a2 X
set global-proportion note# K' m) t1 o! p/ s$ A* q' C
]
6 L& M3 K% {( T& F# Z* fend
: o6 v. p9 \: @, u% h4 k+ U
  w6 f: y. m/ @8 zto do-trade$ ^5 V0 Y. v+ E9 Y$ w
;;
这个过程实际上是给双方作出评价的过程
0 C7 Q& w/ R: O" w( ^set trade-record-current lput( random-float 1) trade-record-current ;;turtle 得到的评价
1 D! w1 R3 S) Z, b$ c2 Pset trade-record-current lput( random-float 1) trade-record-current ;;turtle 给出的评价
1 ?8 w. p/ |/ A: ~! ?1 S9 d) kset trade-record-current lput(timer) trade-record-current
, o* }- O8 o+ ~8 V9 E;;
评价时间
1 U- o; m/ u0 S# S* gask myself [" l# E& ?5 f$ H5 [, [0 }& f# o
update-local-reputation
& i* Y* o. `5 g0 m9 p5 L& {set trade-record-current lput([local-reputation] of myself) trade-record-current
8 Y2 Q( K* t, P6 U+ m0 O]1 B. q4 c0 a( P  |" |4 @  c
set [trade-record-one] of myself lput(trade-record-current) [trade-record-one] of myself
% `# J( B1 M# n5 f5 k6 [4 {;;
将此次交易的记录加入到trade-record-one4 v' ^; I7 D. N* K& T
set [trade-record-all] of myself (replace-item ([who] of customer - 1 ) [trade-record-all] of myself [trade-record-one]of myself)( r6 V$ {0 `4 D" d1 f( k7 E
let note (item 2 trade-record-current )
+ A  W6 x7 t, y5 h1 s, B8 Vset trade-record-current- ?) m  k, u( @9 P7 u! J! a
(replace-item 2 trade-record-current (item 3 trade-record-current))
+ E: \0 x. B; S/ Z$ t+ y# d' O
set trade-record-current; x) F' |) W! S5 k
(replace-item 3 trade-record-current note)8 Q0 ~5 S! [- m4 h2 E3 Y7 I

6 L* C8 Y4 n5 d6 \
- Q+ P; q, O0 `' m+ ]# z5 y2 p
ask customer [
1 y/ p: M1 P8 ?7 w, _9 uupdate-local-reputation1 K8 |& c: I/ d# k/ r) N! X
set trade-record-current  H& ]7 F2 d  S. g+ |
(replace-item 4 trade-record-current ([[local-reputation] of myself]of customer))
& H& Y" H" f$ W! x$ [) B
]
( @* f4 p1 P' F! ?+ X# x2 Y5 M& F# Q
; k5 H" t! {: T. B! x9 |. Y3 k, M

7 Z" W. b; e! g$ i/ fset [trade-record-one] of customer lput(trade-record-current) [trade-record-one] of customer( K" F( G7 ]2 U9 U2 o- [. f5 K6 s# B
! [0 I, S8 y6 i% D+ a
set [trade-record-all] of customer (replace-item ([who] of myself - 1) ([trade-record-all] of customer)([trade-record-one] of customer))2 u2 w1 m) i8 c' F
;;
将此次交易的记录加入到customertrade-record-all3 Z4 e5 A9 p6 X' J
end
* _6 Y9 F, a( a( k5 j. U' ~$ H2 Q, R9 x% M2 Z
to update-local-reputation/ ?: x3 d8 E  M( B' s- C  O/ O
set [trade-record-one-len] of myself length [trade-record-one] of myself0 N- T% a7 Q  K6 E0 E

/ L: ^" p  D! S0 Q) {5 o1 w
  P# i! J3 N; {3 I/ I;;if [trade-record-one-len] of myself > 3

, p* n7 B: y% L- @update-neighbor-total
: F5 ~5 I( a/ Q( q1 }8 p;;
更新邻居节点的数目,在此进行
' n' h0 E# B! [5 I$ Z; |4 N0 m. R" Rlet i 3# k6 S2 ], X( ?# y
let sum-time 0
' ~1 Z5 ^6 D! v% }while[i < [trade-record-one-len] of myself]/ r- v  T) ^% s) f; @
[
1 I3 {% G- l1 Z1 T4 lset sum-time ( sum-time + item 0(item i [trade-record-one] of myself) )
" K) D4 a: T8 e; d! Q5 K- R) Uset i
  t( m4 r8 a' Y/ k# L( i + 1)
( C% C$ d; O# B5 ?9 E3 _8 x4 G; Q
]
' W9 V8 A% p$ ]3 p3 _8 Hlet j 3
" ]" s$ R/ P1 t: Glet sum-money 00 M* y* x8 s- z7 n, U) i1 f/ U8 F
while[j < [trade-record-one-len] of myself]
: a8 m4 E2 R3 `[
3 c- y2 x0 T& [7 A8 Yset sum-money ( sum-money + (item 1(item j [trade-record-one] of myself)) * (item 0(item j [trade-record-one] of myself) ) / sum-time)
. f2 G5 m6 ^7 i2 hset j
* ^6 F3 ?* f0 E- J- ~, g1 O: f. E( j + 1)
( S4 _% E$ r1 K  I3 x% v- }
]
" G8 V( f# b+ t; x( Clet k 3
+ O5 D6 f5 {" K6 ?* \; G9 \let power 0
% V6 h. w' l4 I$ @let local 02 V( J, y% q2 M! m* |# C
while [k <[trade-record-one-len] of myself]
% m, N% Z9 Y9 o+ H& }[) \) \  y1 e% Q, }) M1 r
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)
0 |" c( V! h: F8 }( U$ uset k (k + 1)
' d* V, g0 `( W( g: M]1 h1 l8 H2 F/ B6 m  ]: d; }
set [local-reputation] of myself (local)3 x+ U9 r+ Q% O3 e$ B
end
2 R! Q0 t* c# t( S- u( @2 J' ]
1 n" N( r2 K+ c: c* s2 k$ O/ Hto update-neighbor-total
1 g( T' E6 M7 x0 |& Q% b/ g/ o) q# V& V. i3 t3 A  p/ O( E
if([trade-record-one-len] of myself = 3) [set neighbor-total (neighbor-total + 1) ]# l5 T4 e2 y. u
/ E: S  V0 |, Z- |* Q# F
2 O6 `5 T# g$ @0 ~! Y( ?5 _! O
end. J5 t5 s' T) Q

2 X5 |. Q* d) X; t; W$ S/ ]/ o9 Nto update-credibility-ijl ( Z  s9 I5 i# z- @% k, f

$ T9 b0 N% W- k, H; n& [  Q/ L;;
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。
& t/ U0 x* t; d# L8 U0 \( w2 qlet l 0
" q8 Y( t; F& B+ v, G" ]while[ l < people ]& B; o+ ~$ `/ v) H( A
;;
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! Z8 d4 F3 G: o2 B0 R
[
# e) ?: ^( `& h4 H& [8 xlet trade-record-one-j-l-len length item l ([trade-record-all] of customer)+ x% R% H* G; ^9 ?: o  S
if (trade-record-one-j-l-len > 3)' h! u2 a% [- L" \3 h, h
[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
* Z5 }4 g& i( Glet i 3
0 Q+ H) p- S3 j8 \8 glet sum-time 03 i' z0 U' [: L5 x+ j1 T  S' T
while[i < trade-record-one-len]0 F) R' W6 b$ z- a, ~: w8 t( B
[
" C7 T) n3 J2 n! w2 C- Wset sum-time ( sum-time + item 4(item i [trade-record-one] of myself) )
+ T- s3 U& J0 g! i9 vset i, H, Q$ e7 ^" p
( i + 1)

& @' H  E7 u4 X4 Q* D. X1 |4 A]
: B  L# B3 [( i; B" p$ v+ s3 a! ulet credibility-i-j-l 0
8 S1 j4 R# x) h' b;;i
评价(jjl的评价)4 ]( d- |1 s* x5 N
let j 3) F4 ]7 V/ o1 _* D
let k 4
' Z9 C. l/ ]' A( S( }9 M* @while[j < trade-record-one-len]+ t5 j; U/ v6 ~0 p4 c0 F8 N
[; n, b/ o- C5 L0 k0 ]# C. L
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- F" Z! g" J$ s! ~) T$ i$ Z9 Z
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)
6 _) o$ Q! {& @( P( Dset j
6 U/ f; j  L" D& h7 A( j + 1)
' n* m( e/ y  W3 H
]
6 E; k% F. g/ R6 }/ {5 I& Sset [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 ))0 K! o! B( v2 d, v: ?" O& \4 g( |
% o# K$ S7 O* {7 ?- [8 J7 y

+ ]/ O1 k; o. a9 blet note ((sum (item ([who] of myself - 1)([credibility-all] of turtle l)) - 1 ) / (people - 2))- o& j, W3 @% q8 {
;;
及时更新il的评价质量的评价6 l4 z9 ?& i& n  k0 j
set [credibility] of turtle l (replace-item ([who] of myself - 1)[credibility] of turtle l note) ]+ H5 Q+ s) ]$ q
set l (l + 1): u6 ^9 J0 w6 h) r: }; a
]
6 [- l& F% \: ?( q3 Xend" T* a8 c0 `9 N3 f) k

0 d  Q" N4 y( ]* D# jto update-credibility-list7 W+ H: W8 q: P! ?: d
let i 0
2 _% m; A) M! Wwhile[i < people]
/ w; n% i  J& |4 N3 L9 S2 [; t[
. S- p6 w/ b" E5 _; hlet j 0
) w& t' i9 w2 n: v6 ]! u+ elet note 0
. C  N& {$ |, U, V* C- g' F+ y/ Q' llet k 0
6 ?/ [% l3 i. z5 y7 A! I2 C;;
计作出过评价的邻居节点的数目. h6 h3 R2 {- Y- V* ?
while[j < people]
% b5 ~6 c- h* j( j! l( b[
/ B% t! o) C1 ~! q/ |7 o% Vif (item j( [credibility] of turtle (i + 1)) != -1)
, q1 L6 E7 N. e$ x) |! A) b;;
判断是否给本turtle的评价质量做出过评价的节点
% i4 ]. N, `. l% `2 z6 P[set note (note + item j ([credibility]of turtle (i + 1)))
  w( R; L" J1 v) F: D1 a- P;;*(exp (-(people - 2)))/(people - 2))]

3 }  `% h3 m9 x4 ]/ E' ]- O5 Y2 _set k (k + 1)  ~' j9 c0 ]& w" p$ N  b
]
9 U! _3 z- t" b8 r  I2 N% t! Zset j (j + 1)6 L; \/ ?/ {7 L: d/ _& k
]
; m1 w6 N' G/ |/ L" b' ?set note (note *(exp (- (1 / k)))/ k)
6 f. I5 k5 S& k( b# aset credibility-list (replace-item i credibility-list note)+ f6 Y0 K+ ~0 J  w9 P) d0 R5 A$ q
set i (i + 1)) Y1 x) X/ l  e: a* d. `" r
]
4 w0 H, A8 f! x; B* T/ S$ pend
3 y; @! r# i, [9 M1 J" F, ^8 f
8 O* ]: d5 N  O) X  Oto update-global-reputation-list, V$ |+ J; b/ f9 c7 g
let j 0" I' I5 L5 Y2 ~& [, d2 G
while[j < people]4 F9 |  R4 k! R2 \$ N
[- w- s4 q1 x+ S( q
let new 0
1 K6 b, m# n" l;;
暂存新的一个全局声誉
% h9 Z" t8 A* k( Jlet i 0' q( i2 R% D8 F9 v( n
let sum-money 0
6 W- i, t4 l' H+ qlet credibility-money 0
2 K% o% g! i5 {1 Hwhile [i < people]: h( B, p5 Q0 g2 C) l$ b' S8 ]( D
[. @: A5 U! d" |% h3 F) o
set sum-money (sum-money + item 2(item i [trade-record-all] of turtle (j + 1)))) [* J. z0 U  T/ c
set credibility-money (credibility-money + (item 2(item i[trade-record-all] of turtle (j + 1))) * (item j credibility-list))8 ~9 V1 w& G, Z" k/ r0 a
set i (i + 1)
" D. T6 F$ a  ~. U  q]
! P9 Y4 q4 F; a/ @& \! G" Llet k 0
, e& |5 F1 i+ }( f( L0 E% G+ Xlet new1 04 j3 d3 ~0 {3 a; a
while [k < people]% U' _3 a) p9 V2 K3 \/ H
[
4 r# s6 m* O! h5 E. W1 U! pset 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)- }' n) b1 I$ k
set k (k + 1)6 M) x, l9 W2 f1 h! s8 O
]' T! G6 z5 a/ M2 e6 K& I
set new ((exp( -(1 /(sum-money * [neighbor-total] of turtle (j + 1))))) * new1)
  U; I  ]9 s" H/ P0 r) {9 Zset global-reputation-list (replace-item j global-reputation-list new), U6 G: L! C1 R! g1 s
set j (j + 1)
! R+ m9 Z7 ^) r) v# q4 D]! z( ~+ E1 r' P0 Q
end
3 D, d" T8 [! Q0 n. P) e8 \- b/ S& Z! x, V4 D( B$ b! s' I6 _( d
, j5 b; v# k) b

- R" a8 E' K0 Z2 o# t& ]: X( r1 x& Sto get-color
6 k& U5 w5 {/ M. e4 R, V! \: ]! M7 @" A8 _2 t( p3 x- j
set color blue

$ B; b  Y3 x# ?, Vend% B" Q/ D, I" a, o/ P
# H6 s+ p) W. H0 K. V: Y* `
to poll-class! D8 b4 T. I2 X3 }4 f0 R
end' \9 N) a; L+ L# e) J
0 t, O% B: E% i# q0 |. g
to setup-plot1
  V$ F1 ?' W2 [3 ]; o  z/ l
! T, T7 n& b" @; P- Vset-current-plot "Trends-of-Local-reputation"

! H2 V! I4 g- Z2 f9 _. `
' d, K: O; E8 N& @" q/ Eset-plot-x-range 0 xmax
/ `1 w6 ?4 u$ J; |7 ^# A) r2 Z/ \

2 S9 B; W* o9 p) ^% vset-plot-y-range 0.0 ymax
; o5 M. ^6 t' E
end
4 J1 _! b/ y$ V8 L! z* W8 I3 H6 W  U# b: ~
to setup-plot2) i' \- |/ I; \
* f9 O3 n9 M1 X% J2 p" |" P
set-current-plot "Trends-of-global-reputation"

: ?, c1 `; M" o
, c( v# k( K) v9 V6 F7 [) cset-plot-x-range 0 xmax
6 A1 ^# |# O; r' f& L+ t' [! a

2 a# n4 Q9 q7 [! T7 p! _& w& @: tset-plot-y-range 0.0 ymax

  V4 V1 v# e8 r9 y1 Send  K7 u% `5 Z# A0 i% _. \- W: e" I7 V* C

: y) u; O7 S% Q( l8 a8 O' z; [6 E  Rto setup-plot3
$ \9 y3 X! Z+ ?6 G- m
* z: x. ?0 K. X0 Y( x/ oset-current-plot "Trends-of-credibility"
! T* \0 _6 I# x; ?& a6 S

0 B6 d  o. \6 a: Y9 o3 fset-plot-x-range 0 xmax

' S6 ]5 \0 ?, _5 l; Y0 B
5 j% h7 K% X' R) _set-plot-y-range 0.0 ymax
0 r3 g1 v% ~, @6 V* [
end% L) O  b# T# P3 c+ C$ ?
% D" h' p: d" u$ Q9 c
to do-plots0 M. u( m  h# a
set-current-plot "Trends-of-Local-reputation"* S' ~' V. B( M9 ^4 p
set-current-plot-pen "Honest service"
2 T% d6 C4 `" q# H! ?+ Xend6 Z$ f! S# R4 G5 M- G9 E

; e# s% B/ v1 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.
. o, [# @( |% ~+ B; `8 L9 U( H' I6 _9 u$ \0 ~7 @4 ~
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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